Relevant bibliographies by topics / Infiltrative resin

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Academic literature on the topic 'Infiltrative resin'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 April 2022

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Journal articles on the topic "Infiltrative resin"

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Soveral, Madalena, Vanessa Machado, João Botelho, José João Mendes, and Cristina Manso. "Effect of Resin Infiltration on Enamel: A Systematic Review and Meta-Analysis." Journal of Functional Biomaterials 12, no. 3 (August 16, 2021): 48. http://dx.doi.org/10.3390/jfb12030048.

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Subsurface enamel demineralization beneath an intact surface layer or white spots lesions (WSL) can and should be treated with non-invasive procedures to impede the development of a cavitated lesion. We aim to analyze if infiltrative resin improves enamel roughness, microhardness, shear bond strength, and penetration depth. MEDLINE [via Pubmed], Cochrane Central Register of Controlled Trials, Embase, Web of Science, Scholar, and LILACS were searched until May 2021. Methodological quality was assessed using the Joanna Briggs Institute Clinical Appraisal Checklist for Experimental Studies. Pairwise ratio of means (ROM) meta-analyses were carried out to compare the enamel properties after treatment with infiltrative resin on sound enamel and WSLs. From a total of 1604 articles, 48 studies were included. Enamel surface roughness decreased 35% in sound enamel (95%CI: 0.49–0.85, I2 = 98.2%) and 54% in WSLs (95%CI: 0.29–0.74, I2 = 98.5%). Microhardness reduced 24% in sound enamel (95%CI: 0.73–0.80, I2 = 99.1%) and increased by 68% in WSLs (95%CI: 1.51; 1.86, I2 = 99.8%). Shear bond strength reduced of 25% in sound enamel (95%CI: 0.60; 0.95, I2 = 96.9%) and increased by 89% in WSLs (95%CI: 1.28–2.79, I2 = 99.8%). Penetration depth was 65.39% of the WSLs (95%CI: 56.11–74.66, I2 = 100%). Infiltrative resins effectively promote evident changes in enamel properties in sound and WSLs. Future studies with long-term follow-ups are necessary to corroborate these results from experimental studies.
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Silva, Stephanie N., Alena M. Reich, Eladio DeLeon, Tara Schafer, Frederick A. Rueggeberg, and Weston M. Fortson. "Staining potential differences between an infiltrative resin and an esthetic, flowable composite." Journal of Esthetic and Restorative Dentistry 30, no. 5 (September 2018): 457–63. http://dx.doi.org/10.1111/jerd.12415.

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Cho, Bum Rae, and Dae Hong Heo. "Preparation of Mullite Composite Using Liquid Infiltration Technique." Key Engineering Materials 317-318 (August 2006): 105–10. http://dx.doi.org/10.4028/www.scientific.net/kem.317-318.105.

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Porous mullite with a porosity of about 78% was fabricated using Al(OH)3, SiO2 and AlF3 powders to develop non-asbestos friction materials for brake pads. A mullite composite was fabricated by infiltrating liquid phenolic resins to the porous mullite. The effects of the processing parameters (infiltration frequency, immersion duration and resin temperature) on the properties of the mullite composite obtained by the liquid infiltration technique were studied. SEM analysis reveals that the parameters affected the degree of infiltration and hardness of the mullite composite by changing the infiltration frequency and immersion duration. With increasing immersion duration and infiltration frequency, the resultant porosity had lower values. In the case of hardness, the measured values showed an opposite tendency.
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Mascorro, Jose A. "Propylene Oxide: To Use or Not to Use in Biological Tissue Processing." Microscopy Today 12, no. 1 (January 2004): 45. http://dx.doi.org/10.1017/s1551929500051853.

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Propylene oxide (1,2-epoxy propane) has long been utilized as a transitional solvent in the preparation of biological tissues. This compound compound is completely miscible with the various epoxy resins utilized for infiltrating tissues. Ethanol, perhaps the most widely used dehydration agent, does not possess this characteristic and must be removed before the process of infiltration commences. It is common practice amongst biological microscopists to pass tissues for a few minutes through pure propylene oxide (PO) immediately prior to infiltration. The tissues then are pre-infiltrated with various proportions of PO and the embedding medium of choice. For example, one traditional recipe takes the tissues progressively from pure PO to 2:1 PO/resin, 1:1 PO/resin, and 1:2 PO/resin mixtures, with stays of a few minutes at eacil stage. A lengthy procedure such as tills probably is not necessary and has never been favored by this worker.
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Nasser, Felipe, Joaquim Maurício Motta Leal Filho, Breno Boueri Affonso, Francisco Leonardo Galastri, Rafael Noronha Cavalcante, Diego Lima Nava Martins, Vanderlei Segatelli, et al. "Liver Metastases in Pancreatic Acinar Cell Carcinoma Treated with Selective Internal Radiation Therapy with Y-90 Resin Microspheres." Case Reports in Hepatology 2017 (2017): 1–7. http://dx.doi.org/10.1155/2017/1847428.

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Background. Pancreatic acinar cell carcinoma (PACC) is a rare tumor. Surgical resection is the treatment of choice when feasible, but there are no clear recommendations for patients with advanced disease. Liver-directed therapy with Y-90 selective internal radiation therapy (SIRT) has been used to treat hepatic metastases from pancreatic tumors. We describe a case of PACC liver metastases treated with SIRT. Case Report. 59-year-old man was admitted with an infiltrative, solid lesion in pancreatic tail diagnosed as PACC. Lymph nodes in the hepatic hilum were enlarged, and many metastatic liver nodules were observed. After partial pancreatectomy, the left and right lobes of the liver were separately treated with Y-90 resin microspheres. Follow-up imaging revealed that all hepatic nodules shrank by at least 50%, and 3 nodules disappeared completely. Lipase concentration was 8407 U/L at baseline, rose to 12,705 U/L after pancreatectomy, and declined to 344 U/L after SIRT. Multiple rounds of chemotherapy in the subsequent year shrank the hepatic tumors further; disease then progressed, but a third line of chemotherapy shrank the tumors again, 16 months after SIRT treatment. Conclusion. SIRT had a positive effect on liver metastases from PACC. In conjunction with systemic therapy, SIRT can achieve sustained disease control.
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Andrade, Rosa Maria Pereira Moisés Barbosa de, Ruchele Dias Nogueira, Maria Angélica Hueb Menezes-Oliveira, Cesar Penazzo Lepri, and Vinícius Rangel Geraldo-Martins. "Use of Resin Infiltrate for the Treatment of White spot Lesions on Dental Enamel: Case Report." Journal of Health Sciences 21, no. 2 (June 19, 2019): 134. http://dx.doi.org/10.17921/2447-8938.2019v21n2p134-138.

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Abstract Early diagnosis of white spot lesions allows non-invasive treatment to be indicated for the remineralization of active lesions. The goal was to report the clinical Protocol for the treatment of white spot lesion of a patient by the technique of resin infiltration, observing whether there is change of color on the white spot of the dental enamel after its treatment. The selected patient was 16 years old with good overall health, who featured white spot lesion of the dental enamel on tooth 13, classified as ICDAS score 2. The tooth was photographed, and its color was evaluated with the spectrophotometer in accordance with the CIELhC system. For comparison purposes, the color of tooth enamel in an area adjacent to the lesion was evaluated. The treatment of the lesion was performed with the resin infiltrate Icon (DMG, Hamburg, Germany), following the manufacturer's instructions. The color of the tooth was re-evaluated after the application of the resin infiltrate. At the end of the procedure, it was observed that the treatment of white spot lesion by resin infiltration technique reached its goal because, in addition to being minimally invasive, it was highly approved by patient and it provided the masking of the white spot lesion on the dental enamel. Keywords: Dental Caries. Dental Enamel. Composite Resins. ResumoO diagnóstico precoce de lesões de mancha branca permite que um tratamento não invasivo seja indicado para a remineralização das lesões ativas. O objetivo foi relatar o protocolo clínico para tratamento de lesão de mancha branca ativa de um paciente pela técnica do infiltrante resinoso, observando se existe alteração de cor da mancha branca do esmalte dental após o seu tratamento. Foi selecionada uma paciente, de 16 anos de idade, com boa saúde geral e que apresentava lesão de mancha branca no esmalte dental do dente 13, classificada pelo escore 2 do ICDAS. O dente foi fotografado e sua cor foi avaliada com o espectrofotômetro de acordo com o sistema CIELhC. Para fins de comparação, foi avaliada a cor do esmalte dental em uma área adjacente à lesão. O tratamento da lesão foi realizado com a resina infiltrante Icon (DMG, Hamburgo, Alemanha), seguindo as recomendações do fabricante. A cor do dente foi reavaliada após a aplicação do infiltrante. Ao final do procedimento, observou-se que o tratamento da lesão de mancha branca pela técnica da resina infiltrante atingiu seu objetivo pois, além de ter sido minimamente invasiva, foi bem avaliada pela paciente e proporcionou o mascaramento da lesão de mancha branca do esmalte dental. Palavras-chave: Cárie Dentária. Esmalte Dentário. Resinas Compostas.
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Wöckel, Lydia, Thomas Ebert, Bernd Mainzer, Martin Frieß, Dietmar Koch, Kristina Roder, Daniel Wett, Daisy Nestler, Guntram Wagner, and Stefan Spange. "Investigation of Different Phenolic Resins and their Behavior during Pyrolysis to Form SiC/C-Composites." Materials Science Forum 825-826 (July 2015): 240–48. http://dx.doi.org/10.4028/www.scientific.net/msf.825-826.240.

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Specific phenolic resin samples have been developed as the carbon precursor for SiC/C composites. Liquid phenolic resins suitable for fiber-infiltration in the resin transfer moulding (RTM) process are synthesized by using versatile combination of the aromatic component (phenol, naphthalen-2-ol) with various formaldehyde equivalents such as methanal, 1,3,5,7tetraazatricyclo [3.3.1.13,7] decane (urotropine), and 1,3,5-trioxane, under different reaction conditions. Room temperature liquid resoles (RTLR) are obtained by using an excess of the formaldehyde component over phenol (≥2) under basic conditions. Upon heating RTLR can form a crosslinked network even without addition of a hardening reagent. In addition, novolacs are synthesized under acidic conditions using a phenol/formaldehyde ratio ≥1. Nitrogen-containing resins contain nitrogen due to reaction of phenol with urotropine. Novolacs and nitrogen-containing resins are solids at room temperature and not self-curing. To infiltrate these both resins into SiC fibers in the RTM process, they are dissolved in 2furanmethanol (furfuryl alcohol FA) and urotropine which is added as curing-agent. Both, the molecular weight and the amount of the dissolved phenolic resin have an influence on the viscosity and the carbon yield after pyrolysis which is important for this application. The aim was to create different phenolic resins for the fabrication in the RTM process and to characterize the carbon after pyrolysis with respect to the structure and porosity as these are key parameters to generate a stoichiometric SiC matrix by LSI.
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Marouane, O., N. Douki, and F. Chtioui. "A Combined Approach for the Aesthetic Management of Stained Enamel Opacities: External Bleaching Followed by Resin Infiltration." Case Reports in Dentistry 2018 (July 9, 2018): 1–4. http://dx.doi.org/10.1155/2018/1605842.

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Stained enamel opacities are frequently encountered in dental practice. However, due to the risk of unaesthetic outcome, managing such lesions by resin infiltration techniques alone is not advised. Therefore, performing external bleaching before resin infiltration procedure is mandatory to eliminate stains from the hypomineralized lesions in order to aesthetically infiltrate them. In this work, we describe clinical cases in which external bleaching and resin infiltration techniques were used for managing stained enamel hypomineralized lesions related to traumatic dental injuries and molar incisor hypomineralization. Despite the fact that this approach has some limitations, it could be concluded that external bleaching associated with the resin infiltration technique shows promising results to aesthetically manage stained enamel opacities when the stain is totally removed after bleaching.
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Sasaki, Gen, Junichi Adachi, Yong Bum Choi, Jin Pan, Toshio Fujii, Kazuhiro Matsugi, and Osamu Yanagisawa. "Fabrication of the Aluminum Matrix Composite by Ultrasonic Infiltration Technique." Materials Science Forum 475-479 (January 2005): 921–24. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.921.

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In order to infiltrate the molten aluminum alloy to the reinforcement preform by low pressure in casting process and acquire the high performance composites with high density, the effect of the ultrasonic vibration on the infiltration was investigated by model experiments using clear solution and glass or aluminum borate preform, which is correspond to a molten matrix and reinforcement, respectively. Ultrasonic vibration improves the wettability of liquid polyester resin on glass plate, dramatically. The final infiltration height and infiltration speed of liquid polyester resin in glass capillary were improved by the ultrasonic vibration. Furthermore, the infiltration speed of water to aluminum borate preform accelerated by ultrasonic vibration. This effect was more remarkable, when the infiltration height is lower or infiltration time is shorter. In actual, the molten aluminum alloy infiltrate to SiC preform using ultrasonic vibration easily and acquire the high dense composites without pores.
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Sava Rosianu, Ruxandra, Angela Codruta Podariu, Meda Lavinia Negrutiu, Camelia Szuhanek, and Cosmin Sinescu. "Low Viscosity Resin Penetration Degree in Incipient Caries Lesions." Revista de Chimie 68, no. 11 (December 15, 2017): 2588–92. http://dx.doi.org/10.37358/rc.17.11.5934.

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Resin infiltration is considered a treatment option for initial caries lesions. To prevent enamel lesion s from further demineralization a complete and homogeneous penetration of low-viscosity resins should be accomplished. The aim of this study was to compare the penetration abilities of 3 commercial products: Icon (DMG, Germany), Fluorodose (Centrix Inc. USA) and Tetric flow (IvoclarVivadent, Schaan, Liechtenstein).Artificial white spot lesions were produced in 60 orthodontic extracted human premolars. The samples were randomly divided into 3 groups: F - weeklyapplication of 5%fluoride gel; IC � resin infiltration (Icon1-DMG) and T - treatment with composite resins (Tetric flow). Specimens were studied using confocal microscopy and penetration depths were determined. A good correlation between PC and penetration depth was thereby observed (Pearson correlation coefficient, r=0.820).
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Dissertations / Theses on the topic "Infiltrative resin"

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Easterly, Danielle E. "An Investigation of Surface Characteristics of Enamel Treated with Infiltrative Resin: A Scanning Electron Microscopy Study." VCU Scholars Compass, 2017. http://scholarscompass.vcu.edu/etd/4764.

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AN INVESTIGATION OF SURFACE CHARACTERISTICS OF ENAMEL TREATED WITH INFILTRATIVE RESIN: A SCANNING ELECTRON MICROSCOPY STUDY Danielle E. Easterly, Doctorate of Dental Surgery. A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Dentistry at Virginia Commonwealth University. Virginia Commonwealth University. 2017. Director: Dr. Eser Tüfekçi D.D.S., M.S., Ph.D., M.S.H.A. Objective: To evaluate the microstructural changes of a resin infiltrant (ICON®, DMG America LLC, Englewood, NJ) after six months of simulated toothbrushing. Materials and Methods: Ten extracted third molars (n=10) were collected. Artificial white spot lesions were created and resin applied. Environmental SEM images at 250X and 500X were taken after application of Icon® (T1), and after six months of simulated toothbrushing (T2). Micrographs were evaluated for changes in surface characteristics. Results: SEM showed some changes in the surface characteristics of the resin after simulated toothbrushing. However, changes in presence of enamel rods, microcracks, or fractures were not statistically significant (p>0.05). The effects of polymerization shrinkage were noted on most samples in the form of clefts and fissures. Conclusions: Icon® resin seems to withstand challenge by toothbrush abrasion over a six-month period, with some evidence of microstructural wear.
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Moeinian, Malihe. "Development of a radiopaque infiltration resin for early enamel carious lesion." Thesis, Queen Mary, University of London, 2018. http://qmro.qmul.ac.uk/xmlui/handle/123456789/36694.

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A white spot lesion (WSL) is defined as enamel porosity, which could be due to an enamel defect or an initial carious lesion. ICON® resin is a resin infiltrant that penetrates into the enamel porosity and seals the lesion, thus inhibiting the progression of caries. This method is micro-invasive; however, the resin is radiolucent and the clinician cannot detect the material using radiographs. In order to develop a radiopaque resin, understanding the pore size and pore structure in WSLs is helpful. Therefore, the aim of this study was to characterise: (1) the pore size and structure, (2) the incorporation of radiopaque agents into ICON® resin. Brunauer-Emmett-Teller (BET) and focused ion beam-scanning electron microscopy (FIB-SEM) were used to characterise the porosity in WSLs. The data showed the enamel prisms become more pronounced in the advanced areas of the WSLs and demineralisation occurs within or/and between the enamel prisms. The pore size could be as small as an enamel crystallite, 28x48nm. Nano-strontium hydroxyapatite (non-coated and coated) and strontium bioglass were made as radiopaque fillers and characterised using different techniques including fourier transform infrared spectroscopy (FTIR), BET, transmission electron microscopy (TEM), X-ray diffraction (XRD) and particle size measurements. The radiopaque fillers had micron-sized particles, which made them unsuitable for infiltration into WSLs despite their possible ability to remineralise the WSLs. Radiopaque monomers including bromine-methacrylate and tin-methacrylate were able to make ICON® resin radiopaque and they showed a similar viscosity, wettability and biocompatibility compared to ICON® resin. The X-ray microtomography (XMT) showed that the experimental radiopaque resins were able to infiltrate into the WSLs, artificial and natural lesions, and they could be detected using image subtraction. Backscattered electron (BSE) imaging after each step of application of materials showed that the etching pattern and etchant gel could be barriers for a successful infiltration of the resins into WSLs.
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Brennan, Kelly Patrick. "Numerical multi-scale resin infiltration modeling of unidirectional fiber reinforcements." Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1633772951&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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Tay, Franklin R. "An interactive micromorphological study of resin infiltration into acid conditioned dentine." [Hong Kong : Faculty of Dentistry, University of Hong Kong], 1997. http://sunzi.lib.hku.hk/HKUTO/record/B38627954.

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鄭智明 and Franklin R. Tay. "An interactive micromorphological study of resin infiltration into acid conditioned dentine." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B36544346.

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Hammond, Vincent H. "Verification of a two-dimensional infiltration model for the resin transfer molding process." Thesis, Virginia Tech, 1993. http://hdl.handle.net/10919/41537.

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A two-dimensional fmite element model for the infiltration of a dry textile preform by an injected resin has been verified. The model, which is based on the finite element/control volume technique, determines the total infiltration time and the pressure increase at the mold inlet associated with the RTM process. Important input data for the model are the compaction and permeability behavior of the preform along with the kinetic and rheological behavior of the resin.

The compaction behavior for several textile preforms was determined by experimental methods. A power law regression model was used to relate fiber volume fraction to the applied compaction pressure. Results showed a large increase in fiber volume fraction with the initial application of pressure. However, as the maximum fiber volume fraction was approached, the amount of compaction pressure required to decrease the porosity of the preform rapidly increased.

Similarly, a power law regression model was used to relate permeability to the fiber volume fraction of the preform. Two methods were used to measure the permeability of the textile preform. The first, known as the steady state method, measures the permeability of a saturated preform under constant flow rate conditions. The second, denoted the advancing front method, determines the permeability of a dry preform to an infiltrating fluid. Water, corn oil, and an epoxy resin, Epon 815, were used to determine the effect of fluid type and viscosity on the steady state permeability behavior of the preform. Permeability values measured with the different fluids showed that fluid viscosity had no influence on the permeability behavior of 162 E-glass and TTI IM7/8HS preforms.

Permeabilities measured from steady state and advancing front experiments for the warp direction of 162 E-glass fabric were similar. This behavior was noticed for tests conducted with corn oil and Epon 815. Comparable behavior was observed for the warp direction of the TTl 1M7/8HS preform and corn oil.

Fluid/fiber interaction was measured through the use of the single fiber pull-out test. The surface tension of both the corn oil and Epon 815 was determined. The contact angle between these two fluids and glass and carbon fibers was also measured. These tests indicated that the glass fiber had a lower contact angle than the carbon fiber and therefore is wet out better than the carbon fiber by both fluids. This result is attributed to the sizing commonly used on the carbon fibers.

Mold filling and flow visualization experiments were performed to verify the analytical computer model. Frequency dependent electromagnetic sensors were used to monitor the resin flow front as a function of time. For the flow visualization tests, a video camera and high resolution tape recorder were used to record the experimental flow fronts. Comparisons between experimental and model predicted flow fronts agreed well for all tests. For the mold filling tests conducted at constant flow rate injection, the model was able to accurately predict the pressure increase at the mold inlet during the infiltration process. A kinetics model developed to predict the degree of cure as a function of time for the injected resin accurately calculated the increase in the degree of cure during the subsequent cure cycle.
Master of Science

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Weideman, Mark H. "An infiltration/cure model for manufacture of fabric composites by the resin infusion process." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-03032009-040744/.

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Altarabulsi, Mhd Basel [Verfasser]. "Clinical Applicability, Safety and Effect of Resin Infiltration for Proximal Caries / Mhd Basel Altarabulsi." Greifswald : Universitätsbibliothek Greifswald, 2013. http://d-nb.info/1033633941/34.

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Amico, Sandro Campos. "Permeability and capillary pressure in the infiltration of fibrous porous media in resin transfer moulding." Thesis, University of Surrey, 2000. http://epubs.surrey.ac.uk/1011/.

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Theodory, Tamer George. "The esthetic outcome and the infiltration capacity of three resin composite sealers compared to ICON (DMG, America)." Thesis, University of Iowa, 2018. https://ir.uiowa.edu/etd/6511.

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Title: The Esthetic Outcome and the Infiltration Capacity of Three Resin Composite Sealers Compared to ICON (DMG, America). Objective: The aim of these studies, including a randomized control in-vitro study and a survey study was to answer the following question: In treating initial caries lesions, is the esthetic outcome and the infiltration capacity of the three resin composite sealers; BisCover LV (Bisco Dental), Optiguard (Kerr), PermaSeal (Ultradent) similar to that of the gold standard ICON (DMG, America) resin infiltrant. Methods: A sample of 75 extracted human permanent molars were painted with an acid resistant nail varnish (Revlon, USA) to protect the tooth surface from demineralization leaving only two panels of 1x7 mm of exposed enamel on the buccal and the lingual surfaces of each tooth to be demineralized. Samples were immersed in an acidic gel (500g of Fisher G-8 Gelatin, 275 Bloom, 0.1% thymol, lactic acid, pH 4.30) for a period of 3 months to create artificial initial caries lesions. Seventy-five specimens were randomly assigned to 5 groups: I: ICON (DMG, America), B: BisCover LV (Bisco Dental), O: Optiguard (Kerr), P: PermaSeal (Ultradent) and C: control group. Specimens were hemi sectioned yielding two halves, each with a panel of 1x7 mm of initial caries lesion. One side was used to assess the esthetic following the caries lesion resin infiltration with ICON, BisCover LV, Optiguard and PermaSeal applied according to ICON manufacturer instructions. The control group (C) did not receive any treatment and was only included in the esthetic part of this study. Preoperative and postoperative photographs were taken. Two sets of photographs were taken for the control group. The preoperative, postoperative and control group photographs were installed in a PowerPoint presentation and placed side by side on a black background. A total of 17 operative faculties and residents at the department of operative dentistry at the University of Iowa (UI) participated in the survey. The esthetic improvement was assessed based on a 100-mm visual analogue scale (VAS). A value between 0 and 20 indicated slight esthetic improvement. A value between 20 and 40 indicated mild esthetic improvement. A value between 40 and 60 indicated moderate esthetic improvement. A value between 60 and 80 indicated high esthetic improvement. A value between 80 and 100 indicated outstanding esthetic improvement. A value of 100 indicated full esthetic recovery. Each subject was asked to look at the preoperative and postoperative photographs of a specimen in each slide and place a line on the respective VAS according to her/his opinion of esthetic improvement. The survey was conducted twice in two different sessions to evaluate the inter-rater and intra-rater reliability. For lesions on the opposite side, the resins: ICON, BisCover™LV, Optiguard and PermaSeal were applied according to the indirect dual fluorescence technique protocol using the red fluorophore rhodamine B isothiocyanate (RITC 0.1%; Sigma Aldrich, Steinheim, Germany) and the green sodium fluorescein (NaFl; Sigma Aldrich). Specimens were sectioned in a mesio-distal direction yielding thin sections of 200 μm and were visualized under the Confocal Laser Scanning Microscope (CLSM, Leica Microsystems, Buffalo Grove, IL.) to assess the infiltration depth percentage (ID%) and the infiltration area percentage (IA%) following the application of the different resins. Statistical analysis: The effect of treatment type on ID% and IA% was evaluated using the one-way ANOVA. The effect of treatment type on esthetic improvement measures represented by VAS scores was evaluated using the non-parametric analogue of the one-way ANOVA; Kruskal-Wallis test. All pairwise comparisons were performed using the Tukey method with an overall 0.05 level of significance. Spearman rank correlations were used to assess the relationship between esthetic improvement measures and infiltration measures. Validity of assumptions related to normality and variance homogeneity were assessed using the Shapiro-Wilk and Brown-Forsythe tests, respectively. The intra-class correlation and associated 95% confidence interval reflecting the reproducibility of the mean VAS scores and the reliability among the evaluators were obtained using the method of Shrout and Fleiss. The Wilcoxon Signed Rank procedure was used to evaluate differences between sessions for individual evaluators. The paired student’s t-test was used to detect any systematic differences between the mean VAS scores at session 1 and 2. Bonferroni adjustment for multiple testing was made for the 17 tests associated with individual raters, using an overall 0.05 level of significance. Results: the mean IA% values were significantly higher in the ICON group compared to the other three treatment groups. Optibond and Permaseal groups resulted in intermediate values that did not differ significantly from each other. Biscover group yielded the lowest mean values and were significantly lower than that of the other three treatment groups. The results of the ID% values were consistent with the results of the IA% values. the mean ID% values were significantly higher in the ICON group compared to the other three treatment groups. Optibond and Permaseal groups resulted in intermediate values that did not differ significantly from each other. Biscover group yielded the lowest mean values and were significantly lower than that of the other three treatment groups. The distribution of esthetic improvement outcomes represented by the average VAS scores for session 1 (AVGVAS1), average VAS scores for session 2 (AVGVAS2), and the combined average VAS scores (AVERAGED_VAS) for each sample obtained from the two sessions were all significantly lower in the control group than in the other four treatment groups. Biscover yielded intermediate average VAS values. ICON, Optiguard and Permaseal yielded significantly greater average VAS values than both the control and Biscover groups and were not significantly different from each other. According to the Spearman rank correlations which was used to assess the relationships between the esthetic improvement measures; AVGVAS1, AVGVAS2 and AVERAGED_VAS for each sample and the two measures of infiltration; the IA% and the ID%, all results were highly significant (p<0.0001) and indicative of a moderately large positive correlation between each of the infiltration measures and the three esthetic improvement measures. The Spearman coefficients for the six relationships evaluated were quite similar, ranging from about 0.523 to 0.548. Conclusion: The resin composite sealers BisCover LV, Optiguard and Permaseal can infiltrate artificial initial caries lesions. The esthetic outcome of artificial initial caries lesion following resin infiltration with Optiguard and Permaseal was similar to ICON and thus might be adequately used in caries resin infiltration. BisCover LV showed the least esthetic improvement and thus might not be indicated for the esthetic management of initial caries lesions but might be used for caries prevention purposes. The esthetic improvement is correlated to the resin infiltration depth to a certain extent after which the esthetic outcome will not be visually impacted.
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Books on the topic "Infiltrative resin"

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Marchello, J. M. Polymer infiltration studies. [Norfolk, Va.]: Dept. of Civil Engineering, College of Engineering and Technology, Old Dominion University, 1992.

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Marchello, J. M. Polymer infiltration studies: Progress report for the period 16 September to 31 December 1991. [Norfolk, Va.]: Old Dominion University Research Foundation, 1992.

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Marchello, J. M. Polymer infiltration studies: Progress report for the period June 1, 1993 - March 31, 1994. Norfolk, Va: Dept. of Civil Engineering, College of Engineering and Technology, Old Dominion University, 1994.

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Marchello, J. M. Polymer infiltration studies: Progress report for the period July 1, 1993 to September 30, 1993. [Norfolk, Va.]: Old Dominion University Research Foundation, 1993.

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Marchello, J. M. Polymer infiltration studies: Progress report, for the period March 31, 1991 to September 15, 1991. Norfolk, Va: Dept. of Civil Engineering, College of Engineering & Technology, Old Dominion University, 1991.

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Marchello, J. M. Polymer infiltration studies: Progress report for the period April 1, 1993 to June 30, 1993. Norfolk, Va: Old Dominion University Research Foundation, 1993.

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Verification of a two-dimensional infiltration model for the resin transfer molding process. Blacksburg, Va: Center for Composite Materials, Virginia Polytechnic and State University, 1993.

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1968-, Hammond Vincent H., and United States. National Aeronautics and Space Administration., eds. Verification of a two-dimensional infiltration model for the resin transfer molding process. Blacksburg, Va: Center for Composite Materials, Virginia Polytechnic and State University, 1993.

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1968-, Hammond Vincent H., and United States. National Aeronautics and Space Administration., eds. Verification of a two-dimensional infiltration model for the resin transfer molding process. Blacksburg, Va: Center for Composite Materials, Virginia Polytechnic and State University, 1993.

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An Infiltration/cure model for manufacture of fabric composites by the resin infusion process. Blacksburg, Va: College of Engineering, Virginia Polytechnic Institute and State University, 1992.

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Book chapters on the topic "Infiltrative resin"

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Paris, Sebastian, and Hendrik Meyer-Lueckel. "Resin Infiltration After Enamel Etching." In Tooth Whitening, 211–22. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-38849-6_10.

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Robinson, Colin. "Resin Infiltration Treatment for Caries Lesions." In Understanding Dental Caries, 199–209. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30552-3_17.

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Scarano, Antonio, Giovanna Orsini, and Adriano Piattelli. "Infiltration Techniques and Results in Different Types of Resin." In Handbook of Histology Methods for Bone and Cartilage, 199–206. Totowa, NJ: Humana Press, 2003. http://dx.doi.org/10.1007/978-1-59259-417-7_12.

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Hilgert, Leandro A., and Soraya C. Leal. "Resin Infiltration: A Microinvasive Treatment for Carious and Hypomineralised Enamel Lesions." In Evidence-Based Caries Prevention, 123–41. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-40034-1_8.

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Gomes, George, Filipa Oliveira, and Jorge Perdigão. "At-Home Tray Whitening and Resin Infiltration After Acid Etching with HCl." In Tooth Whitening, 239–46. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-38849-6_13.

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Preziosi, Luigi, and Angiolo Farína. "Infiltration of a Polymerizing Resin in a Deformable Preform for Fiber Reinforced Composites." In Applied and Industrial Mathematics, Venice—2, 1998, 259–71. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-4193-2_18.

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"Cracked concrete repair with epoxy-resin infiltration." In Concrete Repair, Rehabilitation and Retrofitting II, 311–12. CRC Press, 2008. http://dx.doi.org/10.1201/9781439828403-120.

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De Domenico, V., and R. Felicetti. "Cracked concrete repair with epoxy-resin infiltration." In Concrete Repair, Rehabilitation and Retrofitting II, 293–94. CRC Press, 2008. http://dx.doi.org/10.1201/9781439828403.ch108.

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Zhou, Taomo. "Pribumi Perceptions of the “Chinese Problem”." In Migration in the Time of Revolution, 97–114. Cornell University Press, 2019. http://dx.doi.org/10.7591/cornell/9781501739934.003.0006.

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This chapter assesses how the Indonesian government conducted surveillance of Chinese communities. It demonstrates that, with the advance of the Cold War in Asia, the Indonesian authorities interpreted the ethnic Chinese's oftentimes spontaneous political activism as a systematic infiltration led by Beijing. Some anti-Communist pribumi elites saw Beijing as a strong external power intervening in Indonesian politics and ignored its waning ability to rein in the factional infighting in the Chinese community. Moreover, despite a huge variation in ideological inclinations and economic status among the ethnic Chinese, the pribumi elites tended to treat them as a monolithic group that was simultaneously Communist and capitalist. In 1959, under the pretext of reducing economic stratification, the Indonesian government suspended noncitizen Chinese retailers' business activities in rural areas and legitimized the takeover of foreign enterprises by indigenous merchants.
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Keefer, Robert F. "Soil Organic Matter." In Handbook of Soils for Landscape Architects. Oxford University Press, 1999. http://dx.doi.org/10.1093/oso/9780195121025.003.0018.

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Soil organic matter (SOM) is probably the most important constituent of soils. The effect of SOM on soil properties far exceeds the relative percentage of this material in soils. The small amount of organic matter in soils, usually from 1 to 5%, is very important in providing a reserve food source for microorganisms and higher plants. Almost all properties of SOM are beneficial for plant growth. Soil organic matter can be defined as a complex, heterogeneous mixture of plant and animal remains in various stages of decay, microbial cells—both living and dead—microbially synthesized compounds, and derivatives of all of the above through microbial activity. Soil organic matter is probably the most complex of all naturally occurring substances. Some compounds in SOM are distinctive to soil and are not present in plants or animals. By examining the composition of SOM, one can see why it is such a complex material. The following compounds have been isolated from chemical SOM extracts: . . . 1. Carbohydrates (sugars, polysaccharides)—about 75% of dry weight 2. Lignin (a plant polymer of phenyl propane units) 3. Proteins (combinations of amino acids) 4. Hydrocarbons—fats, waxes, resins, and oils 5. Tannins (phenolic substances) 6. Pigments (chlorophyll) 7. Organic acids (many in the biochemical Krebs cycle) 8. Miscellaneous compounds—includes organic P, organic S, polynuclear hydrocarbons, nucleic acid derivatives, alcohols, aldehydes, esters, etc. . . . Whenever organic materials are added to a soil the physical properties of soil structure, water-holding capacity, and soil color are changed. The extent of change in these properties depends on the amount and type of organic material added, the soil microorganisms present in the soil, and the speed at which decomposition occurs. Aggregation and granulation (crumb formation) is increased by polysaccharides produced by microorganisms during decomposition. This improves soil tilth (ability to work the soil) and helps stabilize the soil crumbs. The ability of a soil to hold water is greatly increased by addition of SOM. This results in greater infiltration (water moving into the soil) and adsorption of water by the SOM, with consequently less erosion and loss of soil particles and fertility.
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Conference papers on the topic "Infiltrative resin"

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Sayre, Jay R., and Alfred C. Loos. "Resin Infusion of Triaxially Braided Preforms With Through-the-Thickness Reinforcement." In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/htd-24361.

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Abstract Vacuum assisted resin transfer molding (VARTM) has shown potential to significantly reduce the manufacturing cost of high-performance aerospace composite structures. In this investigation, high fiber volume fraction, triaxially braided preforms with through-the-thickness stitching were successfully resin infiltrated by the VARTM process. The preforms, resin infiltrated with three different resin systems, produced cured composites that were fully wet-out and void free. A three-dimensional finite element model was used to simulation resin infusion into the preforms. The predicted flow patterns agreed well with the flow pattern observed during the infiltration process. The total infiltration times calculated using the model compared well with the measured times.
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Yamaleev, N. K., and R. V. Mohan. "Modeling of Transient Flow inside a Fiber Tow During Liquid Composite Molding." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-82436.

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In liquid composite molding processes, the macroscopic flow in fiber preforms is simultaneously accompanied by the micro-scale impregnation of fiber tows. Because the interstitial space within an individual fiber tow is much smaller than the space between tows themselves, the macroscopic flow front is able to reach the downstream side of the tow before gas entrapped inside the tow can be forced out by the resin impregnation process. In this work, a quasi-2-D model for the dynamic flow behavior inside a fiber tow completely surrounded by a macroscopic resin flow is developed. In contrast to the existing models, the new model accounts for not only the surface tension effects that could influence the flow behavior at this length scale, but also the multidimensional effects and the vapor-liquid phase transition of the entrapped gas, which occurs in resin systems used in liquid composite molding. This model simulates the transient dynamics of the multi-component gas mixture entrapped inside the tow on the time scale associated with infiltrating the intra-tow region. One of the advantages of the new model is its ability to account for the delayed impregnation inside fiber tows, which eliminates the ambiguity in determining the intra-tow infiltration time of the “sink” volume, which is a required parameter for some previously developed models. The model also quantitatively predicts the time-dependent behavior of the sink term, which is needed to accurately simulate the macroscopic resin flow in the preform. The model development and analysis of the transient intra-tow flow behavior under various thermodynamic conditions are presented, and the relevance of the numerical results to the micro-void formation in liquid composite molding processes is discussed.
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RODRIGUEZ-UICAB, OMAR, JANDRO L. ABOT, and FRANCIS AVILÉS. "EFFECT OF CURING TEMPERATURE OF EPOXY RESIN ON THE ELECTRICAL RESPONSE OF CARBON NANOTUBE YARN MONOFILAMENT COMPOSITES." In Thirty-sixth Technical Conference. Destech Publications, Inc., 2021. http://dx.doi.org/10.12783/asc36/35778.

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The cyclic thermoresistive response of individual carbon nanotube yarns (CNTYs) embedded into epoxy resins is investigated. The influence of the temperature at which the epoxy resin cures on the thermoresistive response is investigated by using two epoxy resins, one that cures at room temperature and the other one that cures at 130 °C. Heating-cooling cycles ranging from room temperature (RT, 25 °C) to 80 °C, incremental cycles (RT to 40 °C, RT to 60 °C and RT to 80 °C) and incremental heating-dwell cycles are applied to monofilament composites, while their electrical resistance is simultaneously recorded. The monofilament composites showed a negative temperature coefficient of resistance during the heating-cooling cycles of -7.07x10-4 °C-1 for specimens cured at high temperature, and -5.93x10-4 °C-1 for specimens cured at room temperature. The hysteresis after the different heating-cooling cycles was slightly smaller for specimens cured at 130 °C, in comparison to specimens cured at room temperature. Several factors including the intrinsic thermoresistivity of CNTY, level of infiltration and the effect of curing temperature may explain the thermoresistive sensitivity of the monofilament composites.
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Kokkengada, Monnappa, Jack G. Zhou, and Zongyan He. "Low Temperature Polymer Infiltration for Rapid Tooling." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1834.

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Abstract The research presented in this paper is an effort toward developing a technique to produce injection mold inserts to handle small batch production of around a few thousand parts. Common infiltration methods used in rapid tooling have certain limitations viz., cracks, distortion and shrinkage caused by high temperature infiltration. Poor surface quality is also a limitation of conventional infiltration techniques. The high temperatures involved in conventional infiltration techniques make the process more expensive, complex and difficult to control. To overcome these difficulties, as well as to generate tooling for a small batch production, a low temperature polymer infiltration method is proposed in conjunction with existing rapid tooling techniques. Based on the curing principles of polymer materials, several infiltration materials were selected and their mechanical and chemical characteristics were investigated. To determine the necessary amount of polymer materials in the sintered mold an infiltration model is derived and results compared with experimental data. Testing results have shown significant improvements in the thermal resistance and mechanical properties of the rapid tool as a result of the resin infiltration.
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Moghe, Ritwik Prashant, Raghu V. Prakash, Deepika Sudevan, and Hema Katta Shambhayya. "Characterization of Resin-Injection Repair of Impact Damage in Polymer Matrix Composite." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-50400.

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Resin injection repair of impact damage in polymer matrix composites is studied using an in-house developed repair methodology. Carbon fiber reinforced polymeric composite specimens were impacted for three levels of impact damage (23 J, 35 J and 51 J — typical of low energy, medium energy, high energy) using a drop tup test rig and the damage zone was characterized using ultrasonic C-scan technique. The impact damaged specimens were repaired using a resin infiltration method. The selection of low viscosity room temperature curing resin, and process parameters such as resin injection pressure and vacuum levels to be maintained were studied to arrive at optimum repair method. The tension, compression strength of laminates prior to impact and post-impact as well as post-repair was studied to assess the quality of repair method. The results indicate that the chosen resin injection repair is effective for the repair of low energy impact damage but not in the case of medium and high energy impact damage.
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Song, Haonan, Derek Saltzman, Jayanta Kapat, and Jihua Gou. "Processing and Characterization of Continuous Carbon Fiber Reinforced Silicon Oxycarbide Ceramic Matrix Composites." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-71934.

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Abstract There are significant challenges for materials in extreme environments for a variety of applications such as aircraft engines, gas turbines, nuclear reactors, reentry vehicles, and hypersonic structures. Ceramic matrix composites (CMCs) could be ideal candidates to meet these stringent requirements for materials due to their high melting temperatures, high oxidation, corrosion and ablation resistance, low creep, and thermal cycling behavior in such extreme environments. Particularly, continuous fibers can bridge cracks in CMCs and therefore improve the strength and fracture toughness of composites. CMCs are traditionally manufactured by the melting infiltration method. With this method, the high porosity and brittle structure of fabricated CMCs are not capable of withstanding high mechanical and thermal loads. Alternatively, polymer derived ceramic composites are fabricated by incorporating carbon fibers into polymer derived ceramic matrix to achieve high fracture toughness. With the aid of protective coatings with metallic or ceramic materials, such as Nickel and boride nitride, carbon fiber could potentially withstand high temperatures without oxidation. In this study, continuous fiber reinforced silicon oxycarbide composite was manufactured with polysiloxane (PSX) resin and woven carbon fabrics through the polymer infiltration and pyrolysis process (PIP). Re-infiltration of the PSX resin into the composites, curing in an autoclave, and pyrolysis for additional 2 to 10 cycles can increase the yield of ceramics of the composites. A dense structure of the composites was observed by SEM. The EDS results showed that the elemental composition of the composites mainly consisted of carbon, silicon and oxygen. The crystalline structure of the composites was examined through XRD to indicate the degree of polymer pyrolysis to ceramics. The results of four-point bending testing of the composites showed a flexural strength of 62.17MPa, a flexural modulus of 51.30GPa, and a fracture toughness of 1.3 × 108J/m3.
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Farahani, Rouhollah Dermanaki, Hamid Dalir, Martin Le´vesque, and Daniel Therriault. "Mechanical Properties of Three-Dimensional Microstructures Infiltrated by Carbon Nanotube/Epoxy Nanocomposite Under Shear Flow." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-39086.

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Three-dimensional interconnected microfluidic channels fabricated by the direct-write method were infiltrated with SWCNT/epoxy nanocomposites under high shear flow to mechanically characterize the effect of single-walled carbon nanotubes (SWCNTs) spatial orientation in thermosetting-matrix nanocomposites. The micron-size fugitive ink filaments were deposited layer by layer in order to form a scaffold followed by its encapsulation by an epoxy resin. Three-dimensional interconnected microfluidic channels were then obtained by heat curing the encapsulated epoxy followed by fugitive ink removal by liquefying it at high temperature under vacuum. To debundle the Laser-ablated single-walled carbon nanotubes (La-SWNTs), nitric acid treatment following introduction of protoporphyrin IX as surfactant were done to prevent reclustering of the CNTs after separation. La-SWNTs were then mixed with ultraviolet-curable epoxy using a three-roll mill machine to achieve a well-dispersed nanocomposite. The nanocomposites were then infiltrated within the empty channels at high pressures to induce shear. High shear flow infiltration of nanocomposites will cause the CNTs to be aligned in the direction of the channels where an increase in shear leads to an increase in CNT alignments. Finally, in order to mechanically investigate the effectiveness of the infiltration technique and the orientation of SWCNTs, tensile and three-point bending tests were done.
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Erdal, Merve, Marianne Boschelli, and Selçuk Güçeri. "Well-Dispersed Suspension Formation for Infiltration of Ceramic Fiber Preforms With SiC-Filled Polysiloxane Resins." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0693.

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Abstract The development of low-viscosity preceramic polymers such as Blackglas™1, introduced new opportunities to the processing of ceramic-ceramic composites. Many polymer based liquid processing technologies that have been vastly investigated and established, can now be applied to ceramic composite processing with preceramic polymers. Resin transfer molding (RTM) is one of the most promising techniques adaptable to manufacturing of continuous fiber reinforced, ceramic composite structures with reliable, cost-effective properties. A major drawback of the process is the material loss in the preceramic polymer during processing, resulting in a porous structure that needs to be densified for satisfactory structural performance. This can be accomplished through several process cycles at the expense of cost-effectiveness. One way of reducing the number of cycles and obtaining near-net shapes during the process is the inclusion of inert and/or active filler particles in the polymer during injection.
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Lacoste, E., C. Del Borrello, O. Mantaux, and M. Danis. "Processing of Metal Matrix Composites: Bidimensional Numerical Model of the Infiltration of Fibrous Preform by a Pure Metal." In ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/fedsm2002-31447.

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The infiltration process is one of the techniques employed to work out polymer matrix composites (PMC) or metal matrix composites (MMC) and with continuous reinforcement. It consists in injecting the liquid (resin or metal) through a fibrous reinforcement placed in a mould. In the case of the MMC, the fibres and the mould are initially preheated at temperatures lower than the temperature of metal solidification. These thermal conditions induce phenomena of phase change of metal when the metal is in contact with the fibres. These phenomena disturb the flow of metal through the fibrous network. In order to follow the displacement of metal in the preform and take into account of the phase change, a two-dimensional numerical model based on a finite volume formulation was developed, on a very simple geometry.
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Wu, M., M. C. Leu, and N. Guo. "Simulation and Testing of Polymer Electrolyte Membrane Fuel Cell Bipolar Plates Fabricated by Selective Laser Sintering." In ASME/ISCIE 2012 International Symposium on Flexible Automation. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/isfa2012-7249.

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Polymer Electrolyte Membrane (PEM) fuel cell converts directly electrochemical energy into electricity. Flow channels in bipolar plates, a critical component of fuel cell, were designed, simulated and tested. The bipolar plate used a mixture of graphite materials, and was fabricated using a Selective Laser Sintering (SLS) process. The fabricated green parts were carbonized at high temperatures and converted into brown parts. Infiltration of resin was used to enhance the electric conductivity and strength of the bipolar plate. Finite element simulations were performed to investigate the state of species (hydrogen, oxygen) in the channels and Gas Diffusion Layers (GDLs) for four flow field designs including parallel, serpentine, single Hilbert and composite Hilbert. The simulation results were used to obtain the polarization curves and the relationships between stack power and current density, and to discuss the effect of temperature on fuel cell performance. Experiments were conducted to validate the simulation results on voltage and power vs. current density and the effect of temperature on fuel cell performance for the different flow field designs.
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