We are proudly a Ukrainian website. Our country was attacked by Russian Armed Forces on Feb. 24, 2022.
You can support the Ukrainian Army by following the link: https://u24.gov.ua/.
Even the smallest donation is hugely appreciated!
Créez une référence correcte selon les styles APA, MLA, Chicago, Harvard et plusieurs autres
Consultez les listes thématiques d’articles de revues, de livres, de thèses, de rapports de conférences et d’autres sources académiques sur le sujet « Duroplast ».
À côté de chaque source dans la liste de références il y a un bouton « Ajouter à la bibliographie ». Cliquez sur ce bouton, et nous générerons automatiquement la référence bibliographique pour la source choisie selon votre style de citation préféré : APA, MLA, Harvard, Vancouver, Chicago, etc.
Vous pouvez aussi télécharger le texte intégral de la publication scolaire au format pdf et consulter son résumé en ligne lorsque ces informations sont inclues dans les métadonnées.
Würtele, Martin, Michael Emonts, Kai Fischer, Richard Schares, Stefan Schmitt, Martin Schneebauer, Markus Kogel-Hollacher, Martin Hartmann et Helmut Kriz. « Hybrider Duroplast-Thermoplast-Verbundleichtbau durch Laserscannertechnik ». Lightweight Design 9, no 2 (avril 2016) : 30–37. http://dx.doi.org/10.1007/s35725-016-0009-9.
Nier, N., D. Nestler, K. Roder, A. Todt, E. Päßler, J. Weißhuhn, H. Würfel, S. Spange, L. Kroll et G. Wagner. « Großserientaugliche Formgebung durch Duroplast-Spritzgießen zur Herstellung von faserverstärkter Keramik ». Keramische Zeitschrift 68, no 1 (février 2016) : 48–50. http://dx.doi.org/10.1007/bf03400411.
Gebhardt, K. « Development of a sterile cultivation system for rooting of shoot tip cultures (red raspberries) in duroplast foam ». Plant Science 39, no 2 (juin 1985) : 141–48. http://dx.doi.org/10.1016/0168-9452(85)90105-0.
Abel, Tomasz. « Laboratory tests of soil-shell structures made of GRP - an evaluation of the soil medium ». E3S Web of Conferences 45 (2018) : 00002. http://dx.doi.org/10.1051/e3sconf/20184500002.
Soil-shell structures have been widely used for many years in road and network constructions where there are collisions of transport linear structures. A benefit of using such structures is the speed of construction and the durability of the materials used. Despite the wide use of different types of materials, in particular steel shells, new material solutions are still being sought. One material that has been used successfully for many years in the construction of underground network facilities is plastic from the group of duroplasts. Composite profiles with cross-sections reaching up to 3.0 m can be used in the construction of pipe culverts. These culverts are not only objects with a circular cross-section shape, but also other shapes with very good hydraulic parameters and high strength parameters. In order to determine the dependence between the strength of a composite shell and the surrounding soil, a series of tests of laboratory models made in a natural scale were carried out. The aim of the research was to determine the possibility of using duroplastic structures as culverts located under traffic routes, and to also determine the scope of cooperation of the structure with the soil medium and their mutual dependencies.
6
Braun, U. « NEUE VERARBEITUNGSMETHODEN FÜR RIESELFÄHIGE DUROPLASTE ». Angewandte Makromolekulare Chemie 185, no 1 (février 1991) : 23–32. http://dx.doi.org/10.1002/apmc.1991.051850103.
Leps, G., J. Ding, R. Steiner et K. Lüderitz. « Untersuchungen zum Erosionsschutz kohlenstoffaserverstärkter Duroplaste ». Materialwissenschaft und Werkstofftechnik 26, no 7 (juillet 1995) : 374–78. http://dx.doi.org/10.1002/mawe.19950260710.
Kumar, Anil, Nupur Pruthi, B. Indira Devi et Arun Kumar Gupta. « Response of Syrinx Associated with Chiari I Malformation to Posterior Fossa Decompression with or without Duraplasty and Correlation with Functional Outcome : A Prospective Study of 22 Patients ». Journal of Neurosciences in Rural Practice 09, no 04 (octobre 2018) : 587–92. http://dx.doi.org/10.4103/jnrp.jnrp_10_18.
ABSTRACT Background: The aim of the study is to correlate the surgical outcome with radiological changes in patients with Chiari I malformation (CMI) with syrinx. We also compared long-term functional and radiographic outcome in CM1 patients treated with posterior fossa decompression (PFD) with or without duroplasty. Patients and Methods: From December 2013 to October 2015, 22 patients who underwent surgery with the diagnosis of CMI and syrinx were included in the study. Measurements were performed on preoperative and postoperative magnetic resonance (MR) scans using the same software. All patients underwent PFD with or without duroplasty. Clinical results were evaluated on the basis of the Chicago Chiari Outcome Scale (CCOS). We assessed the degree of resolution of syrinx and outcome of Chiari decompression with PFD versus PFD with duroplasty. Mean duration of follow-up was 12.4 ± 5.37 months (range: 6–24 months). Results: Out of 19 patients in whom syrinx diameter decreased on postoperative MR imaging, 17 (89.5%) improved based on CCOS and 2 (10.5%) were unchanged while out of three patients in whom syrinx worsened, 2 (66.7%) improved and 1 (33.3%) was unchanged (P = 0.37). The cord diameter was found to have decreased in 12 patients and of these 11 (91.7%) improved. The cord diameter increased in 10 patients, but 8 (80%) improved (P = 0.57). The mean changes in syrinx, cord, and syrinx/cord ratio were studied in both groups with and without duroplasty, were not statistically significant. In this study, radiological parameters failed to predict functional outcome. Conclusions: The outcome does not correlate with change in any of the syrinx-related factors. Surgical decompression with or without duroplasty does not have a statistically significant relationship in the degree of syrinx resolution. Surgical decompression without duroplasty provides the benefits of surgical decompression while avoiding the complications of intradural techniques.
9
Telemacque, Dionne, Fengzhao Zhu, Kaifang Chen, Lin Chen, Zhengwei Ren, Sheng Yao, Yanzheng Qu, Tingfang Sun et Xiaodong Guo. « Method of Decompression by durotomy and duroplasty for cervical spinal cord injury in patients without fracture or dislocation ». Journal of Neurorestoratology 1, no 1 (2018) : 158–64. http://dx.doi.org/10.26599/jnr.2018.9040017.
Introduction:We developed the method of cervical spinal cord decompression through durotomy followed by duroplasty and analyzed its efficacy.Purpose:To develop a tactic of decompression durotomy and duroplasty for the treatment of severe spinal cord injury(SCI) with extensive edema of the spinal cord and without intramedullary hematoma, and to demonstrate the effectiveness of this method.Methods:From October 2016 to January 2018, 17 decompression operations were performed in the cervical spine in patients with SCI. Decompression laminectomy was done without durotomy in the first group of patients. In the second group, duroplasty of the spinal cord was performed after decompression durotomy. A total of 17 patients, 16 males (94%) and 1 female (6%), were operated on (ages from 32 to 66 years). The patients were divided into two groups: a control group and an experimental group. We used the ASIA scale for assessing the patients. The mean follow up time is 12 months (8−24 months).Results:The first group, i.e., the control group consisted of 10 patients who underwent decompression laminectomy without durotomy. The second group, i.e., the experimental group consisted of 7 patients who underwent durotomy followed by duroplasty. In this group, the positive dynamics were observed in 6 patients. Out of 2 patients with ASIA grade “A”, one showed improvement to ASIA grade “C”, and one improved to ASIA “D”. Two patients with ASIA grade “B” showed recovery to ASIA “D”. Two patients with ASIA grade “C” improved to grade “D” while one patient showed no change from ASIA “C”. Durotomy and duroplasty was effective in the experimental group.Conclusion:The performance of durotomy and duroplasty is an efficient method for the full-scale decompression of the spinal cord and the prevention of edema. This method aims at decreasing intraspinal pressure, as well as preventing ischemia and apoptosis, which is possible for the prevention and treatment of the spinal cord compartment syndrome or spinal cord intramedullary hypertension.
10
Pirouzmand, Fahrad, et William S. Tucker. « A Modification of the Classic Technique for Expansion Duroplasty of the Posterior Fossa ». Operative Neurosurgery 60, suppl_2 (1 février 2007) : ONS—60—ONS—62. http://dx.doi.org/10.1227/01.neu.0000249239.28107.88.
Abstract Objective: Expansion of the posterior fossa is the goal in treatment of many neurosurgical diseases sharing a small posterior fossa and/or tightness at the level of foramen magnum. To further enhance the dural opening at the level of foramen magnum, a modification in the duroplasty technique is suggested. Methods: A simple modification of the classic Y-shaped technique for expansion duroplasty of the posterior fossa is described. This includes an “inverse V-shaped” extension at the bottom of linear durotomy. Results: The key advantage of this technique is creating more transverse expansion of the dural opening in the lower part of duroplasty. This technique has been used in six patients with no technical difficulties or complications. Conclusion: This new method of dural opening provides a safe and likely efficient addition to the traditional technique of posterior fossa durotomy.
Scheffler, Thomas. « Chancen und Möglichkeiten des Duroplast für MID-Anwendungen ». Universitätsbibliothek Chemnitz, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-198598.
Scheffler, Thomas. « Chancen und Möglichkeiten des Duroplast für MID-Anwendungen ». Technische Universität Chemnitz, 2014. https://monarch.qucosa.de/id/qucosa%3A20415.
Thermosets show excellent mechanical properties and chemical resistance (for most automotive fluids) even at high temperatures up to 300 °C. Furthermore they can be highly efficient processed by injection molding. So they should be particularly suited for e.g. under the bonnet applications. However, the reality shows that thermosets are, except fiber reinforced composites, heavily underrepresented in technical applications. E.g. thermosetting components only account 0,2 % to a vehicle’s weight. Therefore reasons can be found in limited knowledge, e.g. relating mold filling behavior.
The objective of the study is to analyze the influence of the mold filling behavior during injection molding of highly filled phenolic compounds on mechanical properties. Injection molding filling studies, mechanical testing and optical microscopy were done while varying mold geometry (injection gate and cavity height), mold temperature and injection rate during injection molding a highly filled phenolic compound. It was found that the mold filling behavior varies with altered injection molding parameters as well as the mold geometry. In consequence of this the mechanical properties change according to the resulting reinforcement orientation. The results can help to improve part and mold design for optimal load transmission.
5
Blumenstock, Tobias. « Analyse der Eigenspannungen während der Aushärtung von Epoxidharzmassen ». [S.l. : s.n.], 2003. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB10361102.
Scheffler, Thomas, Sascha Englich et Michael Gehde. « Specific mold filling characteristics of highly filled phenolic injection molding compounds ». Technische Universität Chemnitz, 2013. https://monarch.qucosa.de/id/qucosa%3A20416.
Thermosets show excellent mechanical properties and chemical resistance (for most automotive fluids) even at high temperatures up to 300 °C. Furthermore they can be highly efficient processed by injection molding. So they should be particularly suited for e.g. under the bonnet applications. However, the reality shows that thermosets are, except fiber reinforced composites, heavily underrepresented in technical applications. E.g. thermosetting components only account 0,2 % to a vehicle’s weight. Therefore reasons can be found in limited knowledge, e.g. relating mold filling behavior.
The objective of the study is to analyze the influence of the mold filling behavior during injection molding of highly filled phenolic compounds on mechanical properties. Injection molding filling studies, mechanical testing and optical microscopy were done while varying mold geometry (injection gate and cavity height), mold temperature and injection rate during injection molding a highly filled phenolic compound. It was found that the mold filling behavior varies with altered injection molding parameters as well as the mold geometry. In consequence of this the mechanical properties change according to the resulting reinforcement orientation. The results can help to improve part and mold design for optimal load transmission.
7
Rocker, Dominik [Verfasser]. « Ein Beitrag zur Tribologie hochgefüllter Duroplaste im geschmierten Gleitkontakt / Dominik Rocker ». Hamburg : Helmut-Schmidt-Universität, Bibliothek, 2021. http://d-nb.info/1237431875/34.
Schimpf, Vitalij [Verfasser], et Rolf [Akademischer Betreuer] Mülhaupt. « Isocyanatfrei maßgeschneiderte, semikristalline Polyhydroxyurethane als multifunktionale Thermo- und Duroplaste mit programmierbar thermoresponsiven Eigenschaften und Formgedächtnis ». Freiburg : Universität, 2018. http://d-nb.info/1163200859/34.
Werkstoffe auf Basis duroplastischer Harze besitzen exzellente Gebrauchseigenschaften für viele Bereiche des industriellen Einsatzes. Vor allem durch die Spritzgießverarbeitung rieselfähiger duroplastischer Formmassen entsteht ein hohes Substitutionspotential gegenüber Bauteilen aus Metallen oder Hochleistungsthermoplasten. Jedoch führen bestehende Erkenntnisdefizite im Prozessverständnis zu Ressentiments hinsichtlich des Einsatzes duroplastischer Werkstoffe. Ziel der Untersuchungen dieser Arbeit war die Ermittlung und Analyse der prozessinduzierten Werkstoffstruktur von spritzgegossenen technischen Phenolharzformteilen. Dabei wurden zum einen das Füllen der Werkzeugkavität und die sich ausbildende Faserorientierung untersucht und zum anderen die sich während des Temperns verändernde chemische Struktur. Anhand von Platten- sowie Zugprüfkörpern wurden sowohl beim Spritzgießen als auch beim Tempern Parametervariationen durchgeführt und die jeweils resultierende Werkstoffstruktur sowie deren Einfluss auf die Formteileigenschaften analysiert. Die Ergebnisse zeigen, dass die Strömungsverhältnisse während der Werkzeugfüllung stark von den Prozessparametern und der Werkstoffzusammensetzung abhängig sind. Dadurch wird auch die Faserorientierung beeinflusst, sodass im Formteil lokal und richtungsabhängig stark unterschiedliche Eigenschaften entstehen können. Darüber hinaus konnte anhand einer alternativen Tempermethode geklärt werden, warum es beim Tempern zu einem Abfall der mechanischen Eigenschaften kommt und eine Möglichkeit zur Vermeidung gegeben werden Because of their excellent properties, thermosets can be applied in a bright range of industrial applications. Especially thermoset molding compounds can be processed highly effective by injection molding, which enables them to substitute metals or high performance thermoplastics. But there is a deficit in process understanding, which limits the industrial application. The objective of this work is the investigation and analysis of the process induced material structure of injection molded technical phenolic components. Therefor the filling of the cavity with the resulting fiber orientation and the chemical processes during post-curing were examined. A parameter variation with injection molded plate and tensile specimens were done and the resulting material structure and the effect on the component properties were analyzed. The results show a big influence of the process parameter and the material on the flow condition during the filling of the cavity. Thereby also the fiber orientation is affected. This leads to process-depending local and direction-depending properties. In addition, this work shows an alternative method for post-curing to avoid the decrease of mechanical properties
10
Höer, Martin. « Einfluss der Material- und Verarbeitungseigenschaften von Phenolharzformmassen auf die Qualität spritzgegossener Bauteile ». Doctoral thesis, Universitätsbibliothek Chemnitz, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-155078.
Spritzgießbare Duroplaste zeichnen sich durch hohe thermo-mechanische Beständigkeit, geringe Schwindung und niedrige Materialkosten aus. Damit können die Anforderungen an spritzgegossene Präzisionsbauteile für den Automobilbau erreicht werden. Im Rahmen der vorliegenden Arbeit werden unterschiedliche Novolak-Phenolformmassen hinsichtlich ihres hygroskopischen Verhaltens und dessen Auswirkung auf die Spritzgießverarbeitung und die Bauteilqualität untersucht. Das Absorptionsverhalten kann mithilfe der Fick’schen Diffusionsgesetzte näherungsweise beschrieben werden. Auf Basis von mechanischen Untersuchungen sowie der Beurteilung der Maßhaltigkeit eines Präzisionsdemonstrators hinsichtlich Schwindung und Verzug wird zudem der Einfluss der Prozessparameter beim Spritzgießen bestimmt. Die vorgestellten Untersuchungen zeigen die Grenzen der Verarbeitung und der realisierbaren Bauteilqualität auf, die auf die großserientaugliche Verarbeitung von duroplastischen Bauteilen übertragen werden können Injection moldable thermosetting materials show excellent material properties, e.g. high thermo-mechanical resistance and reduced shrinkage in combination with low material cost. Thus, technical requirements for high performance parts for automotive applications can be achieved. In the scope of this work different phenolic novolac compounds were investigated regarding their hygroscopic behavior with its influence for injection molding and product quality. The absorption can be approximately described by Fick’s-Diffusion-Model. The interrelationship of injection molding parameters and the thermo-mechanical behavior is examined on the basis of mechanical testing and the assessment of the dimensional accuracy for a thermoset high precision part. The presented investigations point to the limit of processing and realizable part quality which can be transferred for high performance parts molded in mass production
Müller, F. Physik Der Duroplaste Und Anderer Polymerer : Vorträge Der Frühjahrstagung Der Deutschen Physikalischen Gesellschaft Fachausschuß "physik Der ... in ... in Colloid and Polymer Science ). Steinkopff, 2014.
Baur, Erwin, Guenther Harsch et Martin Moneke. « Duroplaste ». Dans Werkstoff-Führer Kunststoffe, 193–217. München : Carl Hanser Verlag GmbH & Co. KG, 2019. http://dx.doi.org/10.3139/9783446460676.012.
Kaiser, Wolfgang. « Duroplaste ». Dans Kunststoffchemie für Ingenieure, 439–78. 5e éd. München : Carl Hanser Verlag GmbH & Co. KG, 2021. http://dx.doi.org/10.3139/9783446466029.011.
Hao, S. P. « Immediate Transnasal Endoscopic Duroplasty for Acute Cerebrospinal Fluid Rhinorrhea ». Dans Advances in Oto-Rhino-Laryngology, 72–76. Basel : KARGER, 1996. http://dx.doi.org/10.1159/000058937.
Hülder, G., T. Maenz et M. Höer. « Spritzgießen von Duroplasten – werkstoffliches Potenzial für Präzisionsbauteile ». Dans Spritzgießen 2017, 133–40. VDI Verlag, 2017. http://dx.doi.org/10.51202/9783182443490-133.
Hilgers, T. « Wärmeleitfähigkeit – Geht das ? – Wärmemanagment in Thermo- und Duroplasten ». Dans Kunststoffe im Automobilbau 2016, 197–208. VDI Verlag, 2016. http://dx.doi.org/10.51202/9783182443421-197.
McGovern, Robert A., et Guy M. McKhann. « Subdural Grid Electrode Placement : Approaches and Complications ». Dans Invasive Studies of the Human Epileptic Brain, sous la direction de Samden D. Lhatoo, Philippe Kahane et Hans O. Lüders, 38–49. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198714668.003.0004.
Subdural grid electrode placement is a safe and effective technique for localizing an epileptic focus in medically refractory patients with discordant non-invasive testing. The specific approach taken is individualized on a patient-by-patient basis. However, the two goals of invasive monitoring with subdural electrodes are the same for every patient: define the volume of cortical tissue responsible for seizure onset and ‘map’ regions of functional tissue that may be impacted by resection of the epileptic focus. While complications are an accepted aspect of the procedure, they can be minimized through meticulous surgical technique, generous duroplasty, and careful postoperative sterility. Because of the heterogeneity of the published literature, we advocate standardized and data-registry-based outcome and complication measurements so that data can be more freely combined and analysed in the future.
9
Barbu, Marius C., Roman Reh et Mark Irle. « Wood-Based Composites ». Dans Research Developments in Wood Engineering and Technology, 1–45. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-4554-7.ch001.
Wood composites are made from various wood or ligno-cellulosic non-wood materials (shape and origin) that are bonded together using either natural bonding or synthetic resin (e.g. thermoplastic or duroplastic polymers), or organic- (e.g. plastics)/inorganic-binder (e.g. cement). This product mix ranges from panel products (e.g., plywood, particleboard, strandboard, or fiberboard) to engineered timber substitutes (e.g., laminated veneer lumber or structural composite lumber). These composites are used for a number of structural and nonstructural applications in product lines ranging from interior to exterior applications (e.g. furniture and architectural trim in buildings). Wood composite materials can be engineered to meet a range of specific properties. When wood materials and processing variables are properly selected, the result can provide high performance and reliable service. Laminated composites consist of wood veneers bonded with a resin-binder and fabricated with either parallel- (e.g. Laminated Veneer Lumber with higher performance properties parallel to grain) or cross-banded veneers (e.g. plywood, homogenous and with higher dimensional stability). Particle-, strand-, or fiberboard composites are normally classified by density (high, medium, low) and element size. Each is made with a dry woody element, except for fiberboard, which can be made by either dry or wet processes. Hybrid composites based on wood wool, particles, and floor mixed with cement or gypsum are used in construction proving high weathering and fire resistance in construction. The mixture with plastics (PP or PE) and wood floor open a new generation of injected or molded Wood Plastic Composites (WPC), which are able to substitute plastics for some utilizations. In addition, sandwich panels with light core made from plastic foams or honeycomb papers are used in the furniture industry.
10
Barbu, Marius C., Roman Reh et Mark Irle. « Wood-Based Composites ». Dans Materials Science and Engineering, 1038–74. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-1798-6.ch041.
Wood composites are made from various wood or ligno-cellulosic non-wood materials (shape and origin) that are bonded together using either natural bonding or synthetic resin (e.g. thermoplastic or duroplastic polymers), or organic- (e.g. plastics)/inorganic-binder (e.g. cement). This product mix ranges from panel products (e.g., plywood, particleboard, strandboard, or fiberboard) to engineered timber substitutes (e.g., laminated veneer lumber or structural composite lumber). These composites are used for a number of structural and nonstructural applications in product lines ranging from interior to exterior applications (e.g. furniture and architectural trim in buildings). Wood composite materials can be engineered to meet a range of specific properties. When wood materials and processing variables are properly selected, the result can provide high performance and reliable service. Laminated composites consist of wood veneers bonded with a resin-binder and fabricated with either parallel- (e.g. Laminated Veneer Lumber with higher performance properties parallel to grain) or cross-banded veneers (e.g. plywood, homogenous and with higher dimensional stability). Particle-, strand-, or fiberboard composites are normally classified by density (high, medium, low) and element size. Each is made with a dry woody element, except for fiberboard, which can be made by either dry or wet processes. Hybrid composites based on wood wool, particles, and floor mixed with cement or gypsum are used in construction proving high weathering and fire resistance in construction. The mixture with plastics (PP or PE) and wood floor open a new generation of injected or molded Wood Plastic Composites (WPC), which are able to substitute plastics for some utilizations. In addition, sandwich panels with light core made from plastic foams or honeycomb papers are used in the furniture industry.
Actes de conférences sur le sujet "Duroplast":
1
Nepomuceno, Thales, Rodrigo Kuromoto, Rafael Monteiro, Almir de Andrade, Saul da Silva, Eberval Figueiredo, Wellingson Paiva et Manoel Teixeira. « Craniotomia descompressiva osteomioplástica associada a durotomias lineares com duroplastia : nota técnica ». Dans XXXII Congresso Brasileiro de Neurocirurgia. Thieme Revinter Publicações Ltda, 2018. http://dx.doi.org/10.1055/s-0038-1673092.
da Silva, Leonardo, Matheus Ribeiro, Francisco de Araújo Júnior, Luiz Pereira, Tiago Rosa, Rodrigo Nakagawa, Anderson Matsubara, Duarte Cândido, Matheus Dias et Rodolfo da Rocha. « Craniectomia descompressiva com ou sem duroplastia ? estudo de 386 casos de um hospital do sul do Brasil. » Dans XXXII Congresso Brasileiro de Neurocirurgia. Thieme Revinter Publicações Ltda, 2018. http://dx.doi.org/10.1055/s-0038-1673065.
Cabral, Eldo, Natanael Gomes, Louise Oliveira, Walderico Filho, Lucas de Souza e Silva, Andreia de Oliveira, Manoel Teixeira, Wellingson Paiva et Robson Amorim. « Craniotomia tipo “hinge” com duroplastia em doentes com hematoma subdural agudo : o índice de Zumkeller pode influenciar na mortalidade ? » Dans XXXII Congresso Brasileiro de Neurocirurgia. Thieme Revinter Publicações Ltda, 2018. http://dx.doi.org/10.1055/s-0038-1673139.
