Relevant bibliographies by topics / Unsaturated polyester resin

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Academic literature on the topic 'Unsaturated polyester resin'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 June 2025

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Journal articles on the topic "Unsaturated polyester resin"

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Mustafayev, A. M., Y. N. Gahramanli, B. N. Babanly, and R. I. Ismailova. "SYNTHESIS AND PROPERTIES OF BROMINE-CONTAINING BICYCLIC UNSATURATED POLYESTERS." Azerbaijan Chemical Journal, no. 4 (November 14, 2023): 63–70. http://dx.doi.org/10.32737/0005-2531-2023-4-63-70.

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A method for obtaining bromine-containing bicyclic unsaturated polyesters by the interaction of 1,4,5,6,7,7-hexabromobicyclo-[2,2,1]-hept-5-ene-2,3-dicarboxylic acid anhydride, propanetriol and maleic anhydride was developed. It was found that unsaturated polyethers synthesized by a two-step method have a higher molecular weight (3130), density (1.461 g/cm3), viscosity (105 St) and ether number (400 ml KOH/g). It was found that the compositions of epoxy resin ED-20 with unsaturated polyether obtained by method III possess higher tensile strength (90 MPa), higher relative elongation (9%), higher Vicat resistance (2500C) than unmodified epoxy resin. It was shown that in comparison with pure epoxy resin ED-20, its composition with unsaturated polyester synthesized by method I and cured in the presence of polyethylene polyamine (ED-20: unsaturated polyester: polyethylene polyamine), has flame retardant properties, high tensile strength, higher relative elongation and thermal resistance by Vicat. The best results are achieved when the content of unsaturated polyester in the composition is 20%
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Alikin, M. B., D. A. Panfilov, N. A. Lavrov, and I. M. Dvorko. "Obtaining unsaturated polyester resins and materials based on them using recycled polyethylene terephthalate." Plasticheskie massy, no. 9-10 (November 2, 2019): 20–22. http://dx.doi.org/10.35164/0554-2901-2019-9-10-20-22.

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A technique has been developed for producing an unsaturated polyester resin by transesterifying the product of glycolysis of secondary polyethylene terephthalate using maleic and phthalic anhydride. The curing process was studied, it was found that the unsaturated polyester resin was cured by the action of oligoether acrylate (TGM-3), peroxide compound (methyl ethyl ketone peroxide) and accelerator (manganese hydroxide divalent, acetylacetone, cobalt stearate). The physic-mechanical characteristics of polymeric materials based on unsaturated polyester resin, the analysis of which indicates a high thermal stability, have been studied.
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Xie, Xiang Li, Lin Jiang Wang, and Guo Wei Zhang. "Preparation and Flame Retardancy of Unsaturated Polyester Resin Containing P-Toluenesulfonate-Pillared Layered Double Hydroxide." Advanced Materials Research 399-401 (November 2011): 1372–75. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.1372.

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The p-toluene sulfonate- pillared layered double hydroxide(PTS-LDH) was synthesized by co-precipitation method, unsaturated polyester resin/ PTS-LDH composites were prepared by solution blending and solidifying. The X-ray diffraction was used to characterize the structure of the composites. The thermal stability and fire properties of composites have been studied by thermo- gravimetric analysis, limit oxygen index and UL94 burning test. The results show that the interlayer space of original LDH was 0.775nm, which was increased to 1.73nm for PTS-LDH and 2.077 nm for unsaturated polyester resin/ PTS-LDH composite. The addition of PTS-LDH improved the flame retardancy of unsaturated polyester resin. Limit oxygen index of unsaturated polyester resin/ PTS-LDH composite was increased to 23.30 % from 21% of the pure resin, the char residue rate increased by 3.7% and the speed of horizontal burning was decreased by 20.24%. The vertical burning test (UL-94) results indicated that the materials achieved V-2 grade.
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Zhang, Hong Yan, Xi Shi Tai, and Hai Quan Wang. "Preparation and Characterization of Unsaturated Polyester/Graphite Nanosheets Composites under Electric Field." Applied Mechanics and Materials 182-183 (June 2012): 33–36. http://dx.doi.org/10.4028/www.scientific.net/amm.182-183.33.

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As a conductive fillers, graphite nanosheets can be induced by the AC electric field in unsaturated polyester resin and then prepared oriented unsaturated polyester resin/graphite nanosheets composite. We investigate the preparation, configuration and capability of the unsaturated resin/ graphite nanosheets conductive composites and the oriented theory of the graphite nanosheets induced in the electric field. The measures and observation of scanning electron microscopy(SEM), X-ray diffraction(XRD), electric current have shown that the graphite nanosheets are oriented by electric field which were randomly dispersed in the polymer matrix at the beginning, and then oriented with their flakes along the electric field in the polyester resin.
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Zhang, Hong Yan, Hai Quan Wang, and Su Qing Wang. "Structure Characterization of Unsaturated Polyester/Graphite Nanosheet Composite under Electric Field." Advanced Materials Research 455-456 (January 2012): 524–27. http://dx.doi.org/10.4028/www.scientific.net/amr.455-456.524.

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As conductive fillers, graphite nanosheets can be induced by the AC electric field in unsaturated polyester resin and then prepared oriented unsaturated polyester resin/graphite nanosheets composite. we investigate the preparation、configuration and capability of the unsaturated resin/graphite nanosheets conductive composites and the oriented theory of the graphite nanosheets induced in the electric field. The measures and observation of scanning electron microscopy (SEM), X-ray diffraction (XRD), electric current have shown that the graphite nanosheets are oriented by electric field which were randomly dispersed in the polymer matrix at the beginning, and then oriented with their flakes along the electric field in the polyester resin.
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Feng, Lifei, Ran Li, Han Yang, Shanwei Chen, and Wenbin Yang. "The Hyperbranched Polyester Reinforced Unsaturated Polyester Resin." Polymers 14, no. 6 (2022): 1127. http://dx.doi.org/10.3390/polym14061127.

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We report a method of reinforcing and toughening unsaturated polyester resin (UPR) with a kind of hyperbranched polyester (HBP-1). Polyethylene glycol with different molecular weight was used as the core molecule of the preparation reaction, and the reaction product of phthalic anhydride and glycerol was used as the branching unit. The esterification reaction of polycondensation occurred, and then the hydroxyl-terminated hyperbranched polyester was prepared. The reaction product of maleic anhydride and isooctanol was added to the prepared hydroxyl-terminated hyperbranched polyester for esterification reaction. Both ends of the hyperbranched polyester had unsaturated double bond to obtain the hyperbranched polyester (HBP-1). The effects of this treatment on the morphology, mechanical properties and thermal properties of the composites were studied in detail. The HBP-1 was investigated by Fourier Transform Infrared Spectroscopy (FT-IR). The HBP-1/UPR composites were investigated by Thermogravimetric Analysis (TGA), Dynamic Mechanical Analysis (DMA), mechanical properties analysis and Scanning Electron Microscope (SEM). The results showed that HBP-1 enhanced the thermostability and mechanical properties of UPR. However, DMA indicated that the addition of HBP-1 cannot effectively improve the thermodynamic properties of UPR due to the flexible chain in HBP-1 structure. The HBP-1 improves tensile strength, bending strength and impact strength compared to neat UPR.
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Mustapha, Siti Noor Hidayah Binti, Muhammad Syafiq Asyraf Bin Azhman, Shamsul Zakaria, Rasidi Roslan, Rohani Binti Mustapha, and Lee Tee Chuan. "Mechanical Properties of Graphite Filled Unsaturated Polyester and Unsaturated Polyester/Palm Oil Blend Resin." Materials Science Forum 981 (March 2020): 150–55. http://dx.doi.org/10.4028/www.scientific.net/msf.981.150.

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This research aim to investigate the effect of graphite loadings in unsaturated polyester (UPE) / acrylated epoxidized palm oil (AEPO) blend resin. The modification of epoxidized palm oil (EPO) to AEPO was carried out using acrylation process and further blended with synthetic UPE resin. Graphite powder was added at 0.03, 0.05 and 0.1 phr into the UPE/AEPO blend resin and cured in an oven at 100 °C and 160 °C. FTIR spectrums showed the disappearance of oxirane ring and existence of carbon double bond indicating successful of AEPO synthesis process. Tensile and Izod impact test revealed that, graphite showed different effects to neat UPE and UPE/AEPO blend resin. In neat UPE, graphite significantly improved the stiffness properties at 0.1 phr additions. However in UPE/AEPO blend resin, the toughness properties were improved with increased graphite loadings.
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Chowdhury, A., S. K. Singh, and P. Anthony. "Structural and Thermal Characterization of Castor Oil Based Unsaturated Polyester Resin." Asian Journal of Chemistry 32, no. 7 (2020): 1763–67. http://dx.doi.org/10.14233/ajchem.2020.22689.

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In the present study, unsaturated polyester resins based on castor oil was synthesized. Structure elucidation of the synthesized unsaturated polyester resin was done by FTIR and 1H NMR spectroscopy. Thermogravimetric analysis was used to evaluate the thermal stability of cured unsaturated polyester resin. Thermogram plot was further utilized to calculate various other parameters such as statistic heat-resistant index (Ts) and the integral procedural decomposition temperature (IPDT). Comparable properties with respect to commercial resins were reported for the synthesized polymers
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Farsane, Mohamed, Khalid Saadouni, Soufia Lhasnaoui, et al. "Effect of Recycled Ceramic Waste Content on the Properties of Unsaturated Polyester Resin." Materiale Plastice 58, no. 3 (2021): 174–85. http://dx.doi.org/10.37358/mp.21.3.5515.

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In this study, the properties of unsaturated polyester resin were studied in the presence of recycled ceramic waste particles. Herein, composites were created that contained 28.5-50 wt% porcelain particles (particle size [180 �m). High filler contents increased the gel time and decreased the exotherm temperature of unsaturated polyester resin during curing. The obtained results showed that physical parameters, such as the resin density and porosity, increased as the filler content increased. In addition, the X-ray diffraction results indicated that the produced samples were a combination of ceramic waste particles and unsaturated polyester resin, resulting in semi crystalline structure. The results showed that the maximum water absorption at 40�C increased from 0.97 to 1.5% as the filler content increased from 28.5 to 50 wt%; in this process, the materials experienced a color change but did not lose mechanical performance. Finally, the samples were characterized by thermogravimetric analysis (TGA) to study the effect of porcelain powder on the thermal degradation of the resin. The TGA scans were analyzed with the Friedman method. The results indicated that the samples with porcelain powder exhibited substantially better thermal stability than unsaturated polyester resin.
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Farsane, Mohamed, Khalid Saadouni, Soufia Lhasnaoui, et al. "Effect of Recycled Ceramic Waste Content on the Properties of Unsaturated Polyester Resin." Materiale Plastice 58, no. 3 (2021): 174–85. http://dx.doi.org/10.37358/mp.21.3.5515.

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In this study, the properties of unsaturated polyester resin were studied in the presence of recycled ceramic waste particles. Herein, composites were created that contained 28.5-50 wt% porcelain particles (particle size [180 �m). High filler contents increased the gel time and decreased the exotherm temperature of unsaturated polyester resin during curing. The obtained results showed that physical parameters, such as the resin density and porosity, increased as the filler content increased. In addition, the X-ray diffraction results indicated that the produced samples were a combination of ceramic waste particles and unsaturated polyester resin, resulting in semi crystalline structure. The results showed that the maximum water absorption at 40�C increased from 0.97 to 1.5% as the filler content increased from 28.5 to 50 wt%; in this process, the materials experienced a color change but did not lose mechanical performance. Finally, the samples were characterized by thermogravimetric analysis (TGA) to study the effect of porcelain powder on the thermal degradation of the resin. The TGA scans were analyzed with the Friedman method. The results indicated that the samples with porcelain powder exhibited substantially better thermal stability than unsaturated polyester resin.
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Dissertations / Theses on the topic "Unsaturated polyester resin"

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Yang, Huan. "Integrated analysis of unsaturated polyester and Vinylester Resins in vacuum-assisted resin transfer molding (SCRIMP) /." The Ohio State University, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488205318511314.

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Heib, Bertrand. "Développement de vernis d'isolation électrique présentant des propriétés thermomécaniques améliorées à 180°C." Thesis, Grenoble, 2011. http://www.theses.fr/2011GRENI018/document.

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Cette thèse porte sur le développement de résines polyesterimides insaturés pour des applications de type vernis d'imprégnation pour isolation électrique. Il s’agit de matériaux polymères thermodurcissables, qui assurent la double fonction d'isolant et d'agent de cohésion du système isolé. Ils se différencient en classes thermiques, qui définissent leur température maximale d'utilisation. Dans le cadre de cette étude, nous cherchons à développer des produits de classe thermique supérieure ou égale à 180°C. Une première partie de cette étude a porté sur l'amélioration de deux produits commerciaux à base de polyesters insaturés à fonctions terminales imides. Notre attention s'est portée sur la modification de leur structure chimique, afin de voir comment les différents précurseurs utilisés influencent les propriétés des résines. Une seconde partie a consisté à développer de nouvelles résines à base de polyesterimides insaturés, à partir de trois types de précurseurs imides difonctionnels<br>This thesis focuses on the development of unsaturated polyesterimide resins as impregnating varnishes for electrical insulation applications. These thermosetting polymer materials provide the dual function of insulating and cohesion agent of the isolated system. They differ in thermal classes, which define their maximum operating temperature. In this study, we tried to develop products with a thermal class above or equal to 180°C. The first part of this study focused on the improvement of two commercial products based on imide-endcapped unsaturated polyester. Our attention turned to the modification of their chemical structure, to see how the different precursors used affect the thermal and mechanical properties of resins. A second part was to develop new unsaturated polyesterimide resins, using three types of difunctional imide precursors
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Xu, Liqun. "Integrated analysis of liquid composite molding (LCM) processes." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1095688597.

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Thesis (Ph. D.)--Ohio State University, 2004.<br>Title from first page of PDF file. Document formatted into pages; contains xix, 245 p.; also includes graphics. Includes bibliographical references (p. 233-245).
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Caffaro, Filho Roberto Augusto. "Avaliação e identificação de toxicidade em efluente da fabricação de resinas de poliester." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/254751.

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Orientador: Lucia Regina Durrant<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos<br>Made available in DSpace on 2018-08-10T19:47:18Z (GMT). No. of bitstreams: 1 CaffaroFilho_RobertoAugusto_D.pdf: 3860538 bytes, checksum: 5e0a12a4a24fb8f37e470a346d8bc95a (MD5) Previous issue date: 2008<br>Resumo: Os processos industriais são geradores de uma ampla variedade de contaminantes que estão presentes nas águas residuarias. A seleção de processos de tratamento baseia-se nas características do efluente a ser tratado. Neste trabalho investigou-se um efluente tóxico da fabricação de resinas de poliéster. Existem poucas informações na literatura sobre este tipo de água residuaria. Procedeu-se a caracterização do efluente, efetuando-se a avaliação e identificação de constituintes tóxicos presentes no mesmo por meio de uma abordagem orientada por toxicidade. Foi utilizado bioensaio respirometrico em lodo ativado para avaliar a toxicidade do efluente bruto. Então, foram efetuados tratamentos físicos e químicos para fracionamento do efluente, e apos cada um deles, realizou-se o mesmo bioensaio. Dessa maneira, avaliou-se qual técnica de fracionamento foi a mais efetiva na redução da toxicidade. A maior redução de toxicidade foi observada apos o fracionamento do efluente por arraste com ar em pH 11 (62,5 %). Este resultado demonstrou que uma fração significativa da toxicidade do efluente para lodos ativados era causada por compostos orgânicos volatilizados em pH 11. Isso indica que o tratamento do efluente por arraste com ar em pH básico pode ter impacto positivo em um tratamento biológico aeróbio subseqüente. Uma vez determinado o tipo de compostos no efluente que provocam efeitos tóxicos (Compostos Organicos Volateis - COVs), procedeu-se a esforços analíticos visando a identificação dos mesmos. Analises por headspace do efluente por cromatografia gasosa e espectrometria de massa identificaram a presença de aldeidos insaturados (congeneres de acroleina). Tais compostos tinham relacao direta com o efeito tóxico observado. Foram também realizados bioensaios utilizando microrganismos anaerobios. Para tanto, mediu-se o volume de gas produzido por uma biomassa anaerobia em contato com o efluente bruto e com o efluente fracionado por arraste com ar em pH 11. Não se observou redução na toxicidade do efluente mesmo com este fracionamento. Comparando-se esses resultados aos obtidos com lodo ativados, foi verificado que os compostos removidos por arraste com ar em pH 11 não apresentaram o mesmo grau de toxicidade para esta biomassa anaerobia. Tais resultados indicam que a utilização de processo de tratamento biológico anaerobio seria uma opção adequada para a condução de futuros estudos de tratabilidade deste efluente. Os resultados obtidos neste trabalho de avaliação e identificação de toxicidade em efluente da fabricação de resinas de poliéster ratificam a abordagem utilizada como uma valorosa ferramenta na caracterização de efluentes industriais tóxicos, principalmente nos casos onde não se encontram disponíveis informações especificas relacionadas ao efluente estudado<br>Abstract: Industrial processes generate a vast range of contaminants that are present in wastewaters. Treatment process selection is based on wastewater characteristics. In this work a toxic polyester resin manufacturing wastewater was investigated. Specific literature on this kind of wastewater is rare. The characterization of this wastewater was conducted, evaluating and identifying toxicity by applying a toxicity-oriented approach. An activated sludge respirometric bioassay was used to assess effluent toxicity. Then, physical and chemical treatments were performed for effluent fractionation. After each fractionation, the same bioassay was conducted. In this way, it was assessed which fractionation technique was the most effective in reducing effluent toxicity. The greater toxicity reduction was observed after effluent fractionation with air stripping in pH 11 (62.5 %). This result showed that a significant fraction of wastewater toxicity for activated sludge was caused by organic compounds volatilized in pH 11. This indicates that effluent treatment by air stripping in basic pH could have a positive impact in a conjugated aerobic biological treatment. Once the type of compounds causing wastewater toxicity has been determined (Volatile Organic Compounds ¿ VOCs), analytical efforts aiming the identification of these compounds were made. Wastewater headspace gas chromatographic analyses coupled with mass spectrometry identificated the presence of a,ß-unsaturated aldehydes (acrolein congeners). These compounds were directly related to the observed toxic effect. Bioassays using anaerobic microorganisms were also conducted. To that purpose, the volume of gas produced by an anaerobic biomass in contact with the baseline effluent and with the fractionated effluent by air stripping in pH 11 was measured. No toxicity reduction was observed with this fractionation. By comparing this result with the one obtained with the respirometric bioassay, it was found that the compounds removed by air stripping in pH 11 did not inhibit this kind of biomass in the same degree which they inhibited activated sludge. This indicates that the use of an anaerobic treatment process would be an adequate option for conducting future treatability studies in this wastewater. The results obtained in this research of toxicity identification evaluation of a polyester resin manufacturing effluent confirm that the toxicity-oriented approach is a valuable tool for the characterization of toxic industrial wastewaters, especially in cases when specific information related to the studied wastewater is lacking<br>Doutorado<br>Doutor em Ciência de Alimentos
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Kiehl, Julien. "Compréhension et optimisation de la dispersion du carbonate de calcium dans une résine polyester insaturée." Thesis, Mulhouse, 2012. http://www.theses.fr/2012MULH4087.

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L’objectif de ce travail est d’adapter une formulation dispersante mise au point par la société Mäder à la dispersion de carbonate de calcium (CaCO3) dans une résine polyester insaturée (UP). Le carbonate de calcium est utilisé en tant que charge dans les matériaux composites à matrice thermodurcissable et en particulier dans les SMC (Sheet Molding Compound). Le rôle de cette formulation est de diminuer les viscosités de résines UP fortement chargées tout en conservant voire en améliorant les propriétés mécaniques des composites formés par un renforcement de l’interface charge / matrice. Trois grands axes ont été développés au cours de ce travail : - le comportement rhéologique d’un mélange CaCO3/résine UP a été déterminé et la formulation dispersante a été optimisée ; - la nature des interactions entre les différents constituants de la formulation dispersante et la surface du CaCO3 a été mise en évidence ; - de nouveaux polymères permettant une dispersion plus efficace de la charge dans la résine ont été synthétisés. Le mélange CaCO3 / résine UP présente un comportement rhéologique complexe. L’optimisation de la formulation dispersante a permis d’augmenter de plusieurs pourcents le taux de charge tout en conservant des viscosités inférieures à celle autorisée par le procédé industriel. L’étude des interactions des constituants de la formulation avec le carbonate de calcium a permis de déterminer les fonctions les plus réactives et de comprendre leur interaction avec la surface de la charge. La synthèse de nouveaux dispersants a également été effectuée. Ces derniers ont ensuite été testés dans l’application et ont montré une efficacité à disperser le CaCO3 dans la résine UP<br>The aim of this study is to adapt a dispersive formulation developed by the Mäder group to the dispersion of calcium carbonate (CaCO3) in an unsaturated polyester resin (UP). The CaCO3 is commonly used as filler in the domain of composites especially for Sheet Molding Compound (SMC). This dispersive formulation is able to decrease the viscosity of UP resin containing a high amount of filler. In addition, the mechanical properties of composites could be increased by reinforcing the filler / matrix interface. Three main ways have been studied: - characterization of the rheological behavior of CaCO3 / polyester blends and optimization of the dispersive formulation ; - determination of the interactions between the dispersive formulation components and the CaCO3 surface ; - synthesis of new polymers in order to improve the CaCO3 dispersion in an organic matrix. A complex rheological behavior has been observed for CaCO3 / polyester blends. The dispersive formulation improvement led to an increasing of the filler percentage by keeping the viscosity under the industrial limit. The most reactive functions with the CaCO3 surface have been identified by studying the interactions between the dispersive formulation components and the CaCO3 surface. New dispersing agents have been synthesized. Their efficiency has been demonstrated for the dispersion of CaCO3 in a UP resin
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Lemattre, Alexis. "Développement de résines polyester insaturées ignifugées : caractérisation des performances feu/fumées et détermination des mécanismes de décomposition." Thesis, Mulhouse, 2018. http://www.theses.fr/2018MULH2179.

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Depuis des années, les marchés des résines polyester insaturées (UP) et des composites sont en pleine expansion. En effet, grâce à la versatilité de leurs structures chimiques, les résines UP offrent un éventail de propriétés physico-chimiques et mécaniques pour le matériau final. Ces caractéristiques ainsi que leur bon rapport performance / prix expliquent l’engouement des industriels pour leur utilisation dans les composites et « gels coat » dans les domaines du bâtiment et du transport. Cependant, ces résines sont inflammables et présentent donc un risque pour leurs utilisations dans les domaines d’application accueillant des personnes. Les réglementations européennes imposent par conséquent une amélioration des propriétés feu/fumées de ces résines. La norme européenne EN45545-2 entrée en application en 2018 a pour but d’unifier les différentes normes nationales et de diminuer le risque d’incendie dans les transports ferroviaires. Les résines UP halogénées actuellement sur le marché produisent des quantités de fumées opaques et toxiques importantes. Les objectifs de ces travaux ont donc été de synthétiser et/ou d’additiver de nouvelles résines UP non halogénées et fluides possédant une tenue au feu comparable à celle des résines halogénées. La combinaison de résines UP modifiées et de retardateur de flamme (RF) additifs a été étudiée et optimisée. L’utilisation à la fois d’un RF réactif et d’un RF additif possédant un effet de synergie a permis de répondre au cahier de charges défini par le partenaire industriel. Cette résine a permis d’améliorer les performances feu/fumées du matériau composite sans impacter ses propriétés physico-chimiques et mécaniques<br>For many years, unsaturated polyester (UP) resins and composites markets are growing. Indeed, the wide range of UP resins gives a large physico-chemical and mechanical properties to composites. These properties and the good performance / price ratio explain the market growth of these resins in industrial applications like composites or gel coats for transportation and construction. However, UP resin exhibit low flammability and the enhancement of their fire behaviour is needed to meet the legislation and to protect goods and people. Since 2018, the European legislation for fire protection used in railway applications (EN45545-2) has strengthened and been harmonized. Smoke opacity and toxicity are the main issue of halogenated unsaturated polyester resins currently used on this market. The aims of this study were thus to develop and formulate new halogen-free and low viscosity UP resins presenting good flame retardant properties. A synergist mixture of reactive and additive flame retardants (FR) was found to be the solution to substitute brominated UP resins and meet the industrial specifications. Finally, the use of such a resin enables developing flame retardant composites without affecting their physico-chemical and mechanical properties
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Kinkelaar, Mark Richard. "Dilatometric study of low profile unsaturated polyester resins /." The Ohio State University, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487848078450146.

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Yang, Yeong-Show. "Free radical crosslinking copolymerization of styrene-unsaturated polyester resins /." The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487588249822242.

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Muzumdar, Shailesh Vasant. "Rheological, kinetic and volumetric characterization of unsaturated polyester resins /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487859879939704.

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Lamy, Yoann. "Nanostructuration de résines polyester insaturé par des copolymères à blocs : application aux composites SMC et BMC." Phd thesis, INSA de Lyon, 2012. http://tel.archives-ouvertes.fr/tel-00812588.

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On s'intéresse dans cette étude au potentiel de copolymères à blocs (BCP) de types PBA-b-P(MMA-co-DMA) et PBA-b-P(BA-co-DMA) en tant qu'additifs multifonctionnels nanostructurant la matrice thermodurcissable polyester insaturé de composites SMC et BMC. La nanostructuration de la résine polyester insaturé (UPR) est assurée par la ségrégation du bloc élastomère poly(acrylate de butyle), ainsi que par la miscibilité du deuxième bloc dans le réseau grâce à la bonne compatibilité des motifs diméthylacrylamide (auto-assemblage). Ces BCP sont tout d'abord étudiés en tant qu'agents renforçants et anti-retrait dans les composites SMC et BMC, en étant substitués et comparés aux additifs anti-retrait conventionnels PVAc et P(MMA-co-S) incorporés traditionnellement afin de compenser le retrait de la résine polyester. Ces additifs nanostructurants sont ensuite évalués en tant qu'agents de mûrissement des compounds SMC. La nanostructuration des BCP dans la résine UP réactive pouvant entrainer une importante augmentation de la viscosité (formation d'un gel), ces additifs pourraient peut-être constituer des agents de mûrissement plus efficaces que l'oxyde de magnésium couramment utilisé à cet effet. Une étude des matrices [UPR + BCP, UPR + PVAc et UPR + P(MMA-co-S)] est réalisée dans un premier temps, les composites BMC et SMC chargés par du carbonate de calcium et renforcés par des fibres de verre étant étudiés par la suite. En absence de charges et de fibres de verre (matrice seule), la nanostructuration est moins efficace que la macroséparation de phase des additifs conventionnels PVAc et P(MMA-co-S) pour compenser le retrait du réseau polyester. Dans un composite en revanche, la nanostructuration conduit à une compensation du retrait intermédiaire entre celles du P(MMA-co-S) et du PVAc. Au niveau de la matrice seule, la nanostructuration permet d'éviter une diminution conséquente de l'énergie de rupture du réseau polyester et permet même dans certains cas une amélioration significative de cette dernière, alors que les additifs conventionnels engendrent un effondrement de cette propriété. Cette différence est cependant beaucoup moins visible dans le cas des composites, les charges entrainant une fissuration prématurée de la matrice. Un composite nanostructuré peut tout de même présenter un renforcement significatif par rapport aux composites conventionnels lorsqu'il contient des nanovides compensateurs de retrait de tailles conséquentes qui améliorent la ténacité du matériau. En ce qui concerne le mûrissement d'un compound SMC par nanostructuration au cours du refroidissement (passage de la transition ordre-désordre), si l'augmentation de la viscosité d'un système réactif UPR + BCP semble suffisamment importante et abrupte, elle est cependant insuffisante en présence des charges ou alors intervient à une température trop faible en raison de l'influence de ces dernières sur la nanostructuration.
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Books on the topic "Unsaturated polyester resin"

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Zhou, Weixing. The effects of spiro ortho carbonates on properties of unsaturated polyester resin and its fibre composites. National Library of Canada = Bibliothèque nationale du Canada, 1993.

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Unsaturated Polyester Resins. Elsevier, 2019. http://dx.doi.org/10.1016/c2017-0-04622-0.

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Unsaturated Polyester Resins: Fundamentals, Design, Fabrication, and Applications. Elsevier, 2019.

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Thomas, Sabu, Mahesh Hosur, and Cintil Jose Chirayil. Unsaturated Polyester Resins: Blends, Interpenetrating Polymer Networks, Composites, and Nanocomposites. Elsevier, 2019.

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Thomas, Sabu, and Cintil Jose Chirayil. Applications of Unsaturated Polyester Resins: Synthesis, Modifications, and Preparation Methods. Elsevier, 2023.

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Thomas, Sabu, and Cintil Jose Chirayil. Applications of Unsaturated Polyester Resins: Synthesis, Modifications, and Preparation Methods. Elsevier, 2023.

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Book chapters on the topic "Unsaturated polyester resin"

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Dinakaran, Kanniyan, Subramani Deveraju, and Muthukaruppan Alagar. "Unsaturated Polyester Resin Clay Hybrid Nanocomposites." In Thermoset Nanocomposites. Wiley-VCH Verlag GmbH & Co. KGaA, 2013. http://dx.doi.org/10.1002/9783527659647.ch6.

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Suriano, Raffaella, Andrea Mantelli, Gianmarco Griffini, Stefano Turri, and Giacomo Bonaiti. "Styrene-Free Liquid Resins for Composite Reformulation." In Systemic Circular Economy Solutions for Fiber Reinforced Composites. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-22352-5_6.

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AbstractThree different classes of thermosetting styrene-free resins were investigated to assess their suitability to constitute the matrix phase in the reformulation of composites reinforced with mechanically recycled glass fibers. Resin reactivity and mechanical properties after curing were compared to commercial styrene-based, unsaturated polyester resins. The polymeric resin, acting as a binder, could be properly selected depending on the desired reactivity, processability, and mechanical behavior. Some prototypal examples of reformulated composites with different types and contents of recycled glass fibers were produced and mechanically tested. The combination of the epoxy resin with up to 60 wt% of mechanically recycled glass fibers resulted in an increase of elastic modulus up to 7.5 GPa.
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Yeon, Jung Heum, Yeoung-Geun Choi, and Kyu-Seok Yeon. "Applications of Concrete-Polymer Composites: Where Are We Now and Where We Are Going?" In Springer Proceedings in Materials. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-72955-3_32.

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AbstractThis study aims to overview the current state of concrete-polymer composite (CPC) applications and proposes ways to develop and generalize the use of CPC in practical applications. According to the literature, polymer-modified concrete (PMC) is mainly formulated using SBR or epoxy-based latex and used for repair and overlays. Polymer concrete (PC) uses unsaturated polyester resin as a polymer binder and is mainly used for precast products. Polymer-impregnated concrete (PIC) research was actively conducted in the 1970s and 1980s, but currently, it is not easy to find except for a few applied studies. This study also presents the challenges and suggestions for developing and generaling CPC use in real-world practice.
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Ranogajec, F., and Z. Jelčić. "Thermally Stimulated Depolarization of Radiation Cured Unsaturated Polyester Resin-Glass Micronodules Composites." In Polymer Composites, edited by Blahoslav Sedlácek. De Gruyter, 1986. http://dx.doi.org/10.1515/9783110856934-032.

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Farishi, Salman, Annisa Rifathin, and Benni F. Ramadhoni. "Phosphorus/Nitrogen Grafted Lignin as a Biobased Flame Retardant for Unsaturated Polyester Resin." In Lecture Notes in Mechanical Engineering. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0950-6_65.

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Parsi, Nika, Masoud Jamshidi, and Mohsen Sarrafi. "Synthesis of Biodegradable Unsaturated Polyester Resin Using Soybean Fatty Acid as an Acidic Monomer." In Eco-friendly and Smart Polymer Systems. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-45085-4_26.

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Yeon, Kyu-Seok, Nan Ji Jin, and Jung Heum Yeon. "Effect of Methyl Methacrylate Monomer on Properties of Unsaturated Polyester Resin-Based Polymer Concrete." In International Congress on Polymers in Concrete (ICPIC 2018). Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-78175-4_19.

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Yang, Mei, Shi Lin Yan, and Mei Liu. "Cure Kinetic Behavior of 191# Unsaturated Polyester Resin Used in Advanced Composites." In Experimental Mechanics in Nano and Biotechnology. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-415-4.1271.

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Yeon, Jung Heum, Yeoung-Geun Choi, Cheol-Jae Yang, and Kyu-Seok Yeon. "Effect of Polymer Paste Content on the Porosity and Strength of Pervious Polymer Concrete." In Springer Proceedings in Materials. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-72955-3_26.

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AbstractThis study investigates the effect of polymer paste content on the porosity and strength of pervious polymer concrete made of unsaturated polyester resin, fly ash filler, and crushed coarse aggregate. The porosity (total porosity and connected porosity) and strength (compressive and flexural strengths) for different polymer paste contents were investigated. The polymer paste content was chosen as an experimental variable because it determines the cost-effectiveness and has a significant impact on various material properties. The results showed that the total and connected porosity fell between 37.5–8.8% and 34.2–7.2%, respectively, when the polymer paste content increased from 7 to 19.5 wt.%. The porosity tended to decrease as the polymer paste content increased. The compressive and flexural strengths ranged from 14.5 to 41.5 MPa and 4.3 to 16.1 MPa, and the strengths increased as the paste content increased. In particular, the strengths were much higher than those of many existing studies on conventional portland cement concrete due to the enhanced adhesion of the polymer binder upon the addition of the cross-linking agent.
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Pham, Thach Hong, Khuong Tung Truong, and Khai Van Tran. "Study on Composite Materials Based on Unsaturated Polyester Resin Matrix and Modified Rice Husk Reinforcement." In Mechanisms and Machine Science. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-83357-1_51.

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Conference papers on the topic "Unsaturated polyester resin"

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Nava, Hildeberto, and Nelson Douglass. "High Strength One Component Hybrid Urethane Resin System for Infrastructure Applications." In CORROSION 2005. NACE International, 2005. https://doi.org/10.5006/c2005-05511.

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Abstract In recent years Urethane Hybrid systems have become very important in the growth of the thermosetting plastics industry. Their practical economical and technical advantages have made it easier for their implementation in conventional molding practices. Their adaptability to common formulations where unsaturated polyester or urethanes are used, provide simple systems that can be processed with fast reaction times and high filler loadings. The resultant products can be designed to have excellent toughness and elongation compared to common unsaturated polyesters. Typically, Polyurethane systems are based on a two part component – a polyol and an isocyanate- that have to be mixed at the time of processing. The challenge however, remains on preparing urethane hybrids that can be formulated as one component system with long storage stability and excellent reactivity. This paper describes a novel one component hybrid urethane system that provides high reactivity and excellent impact strength and toughness. This new approach eliminates the problem of mixing the two components – polyol and isocyanate- that leads to short pot-life due to viscosity build up. In conventional open bath system for pultrusion, the viscosity builds to a point where the pull force exceeds the equipment’s capabilities preventing further processing of the materials. The new system is designed for pultrusion and close molding applications that demand enhanced mechanical properties. The resin is formulated to provide finished products with smooth low-profile like surface which exhibit unique fiber hiding capability. The material combines features required for processing that includes low viscosity, excellent fiber wetting and high reactivity.
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Nava, Hildeberto, and William Carroll. "Preparation of Prepregs Using Thermosetting Resins with Control Rheology." In CORROSION 2005. NACE International, 2005. https://doi.org/10.5006/c2005-05509.

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Abstract Several approaches are found in the literature together with a large number of patents describing the preparation of prepregs. It is very desirable that prepregs are produced using simplified manufacturing processes. The prepreg must be pliable, easy to handle, be shelf stable and meet the end use performance requirements for which it was designed. Resin systems should have low viscosities to facilitate impregnation of the reinforcement and air removal during the process. The prepreg should be tack free; the resin must not drain or migrate and cure at a specific temperature within a specified time. Most common resin materials used in the preparation of prepregs are epoxy intermediates. However, epoxy resins are limited by the type of substrates to which they can be successfully applied and their ability to conform to irregular surfaces. This paper describes a unique process for producing prepregs from relatively low viscosity unsaturated polyester resins. These same resins can be formulated to increase viscosity within minutes or hours after initial impregnation of the reinforcement. Final viscosities may be from a few thousand centipoises to several million and are attainable without altering the reactive monomer or primary backbone of the polymer. Stability and curing properties will be presented together with potential applications.
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Anwer, Razi, and Mike Durbin. "Benefits Exhibited by Styrene Free Coating Technology." In SSPC 2016 Greencoat. SSPC, 2016. https://doi.org/10.5006/s2016-00020.

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Abstract Styrenated Unsaturated Polyester &amp; Vinyl Ester coatings are accepted for use in chemical immersion tank linings. The primary advantage is the increased chemical resistance to harsh commodities and fast turn around time compared to epoxy coatings. However, styrene is becoming heavily regulated due to its safety and health concerns. Styrene also has a pungent odor and contributes to the significant shrinkage in the coating wet film. Typical styrenated coatings often use wax in the top coat to acquire a tack free surface, but this presents a problem while attempting to recoat. The industry is seeking an alternative to styrenated coatings and through formulation and resin composition a styrene free coating can lead to unique properties. This report will outline two novel styrene free coating systems (SF Vinyl Ester Coating that will be referenced as Coating A and SF Vinyl Ester Novolac Coating that will be referenced as Coating B) that improve upon the drawbacks of styrenated coatings while maintaining similar performance.
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Schreiber, P. "Chemical Resistance of Het ® Acid Based Polyester Resins in the Hot Wet Chlorine Industry." In CORROSION 1988. NACE International, 1988. https://doi.org/10.5006/c1988-88168.

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Abstract The use of corrosion resistant fiberglass reinforced plastics - abbreviated CR/FRP - in the chloralkali industry is one of the most successful and proven applications where Het Acid based unsaturated polyester resins are used to satisfy the requirements of corrosion engineers and end-users in their search for lower maintenance and operating costs. The purpose of this paper is to describe the excellent properties of Het Acid based polyester resins and to review the proven fabrication techniques and successful case histories in the chloralkali industry.
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Reith, Hans-Juergen. "Dual Laminate Pipework and Vessels with a Bonded PTFE Lining Suitable for Corrosive Media at High Temperature." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07543.

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Abstract Components used in chemical plants are exposed to extreme stresses due to process conditions. Aggressive media, pressure differences and marked changes in temperature require corrosion protection systems combining high chemical resistance, good mechanical strength and high thermal stability to insure permanently reliable plant operation. Conventional metal equipment and pipe work systems often fail to meet expectations for lasting reliability. For many decades now, glass fiber-reinforced unsaturated polyester and vinylester resins (FRP) have been a familiar and highly appreciated alternative to metal materials. With their chemical-resistant layer and thermoplastic liner they offer good corrosion resistance and are thus ideal materials for equipment and pipe work construction. Up to the 1990s, the media usually handled and stored were aqueous liquids, so that materials with dimensional stability of up to 125°C were adequate. Since then, increasing use has been made of plastic components, especially in constructing equipment and plant components exposed to high thermal stresses in chemical process engineering. Consequently, the demand for higher thermal and chemical stability of the construction materials has increased as well. The product found to meet such demands is a composite system comprising a load-bearing FRP layer and, firmly bonded to it, a modified polytetrafluoroethylene liner. This paper outlines the development of this relatively new composite material. It also describes the practical experience the chemical process engineering industry has gained with this material. Such experience relates in particular to demanding applications combining both aggressive media and high temperatures.
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Yunying, W., and M. Jiangyan. "Ageing mechanism ofortho-phthalic anhydride unsaturated polyester resin." In HPSM 2010. WIT Press, 2010. http://dx.doi.org/10.2495/hpsm100331.

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Zhang, Yu-jun, Li-jun Dai, Yan Wang, Feng-fu Li, and Zhen-hao Jin. "Study on Anti-tracking Properties of Unsaturated Polyester Resin SMC." In 2006 IEEE 8th International Conference on Properties and applications of Dielectric Materials. IEEE, 2006. http://dx.doi.org/10.1109/icpadm.2006.284313.

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Siregar, Adella Hotnyda, Budiman Adi Setyawan, and Amir Marasabessy. "Flame retardant properties of composite fiberglass reinforced unsaturated polyester resin." In DISRUPTIVE INNOVATION IN MECHANICAL ENGINEERING FOR INDUSTRY COMPETITIVENESS: Proceedings of the 3rd International Conference on Mechanical Engineering (ICOME 2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5046280.

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Koshino, Tetsushi, Mohamed S. Aly-Hassan, and Hiroyuki Hamada. "Jute Fiber Reinforced Polymeric Composites With Flexible Interphase." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-87775.

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In this research, the flexible interphase concept was introduced to enhance the poor mechanical properties of jute fiber reinforced unsaturated polyester matrix composites. The jute cloth reinforcement was obtained from recycled coffee bags. These jute cloths after washing by water and drying were soaked in mixture of Polybutadiene Epoxydied as flexible resin and acetone for 10 seconds. Several mixtures consist of 0, 2, 3.5, 5 and 8 wt% of Polybutadiene Epoxydied and 100, 98, 96.5, 95 and 92 wt% of acetone, respectively, to form flexible interface around the jute fibers. Jute cloth reinforced unsaturated polyester matrix composites with different flexible interphase incremental weight ((Wa-Wb)/Wb) ratios were fabricated by hand lay-up method and examined by a series of mechanical tests. The mechanical testing including tensile, bending, Izod strength impact and drop impact was carried out for these composites to evaluate the effect of the flexible interphase and acetone on the jute cloth composites. The flexible interphase succeed to control the mechanical properties of jute fiber reinforced unsaturated polyester matrix composites. Inserting flexible interphase between unsaturated polyester matrix and jute fibers leads to smooth fluctuation, less matrix cracking, in the second part after the knee point of each stress-strain curve as exhibited in composites with higher flexible interphase incremental weight ratio. This means not only the brittle matrix but also interface/interphase dominates the multiple matrix cracking behavior in jute cloth reinforced unsaturated polyester matrix composites. Inserting flexible interphase between unsaturated polyester matrix and jute fibers leads to less number of multiple cracking as shown in the second portion of flexural stress-displacement curve. This means the number of multiple cracking are dominated by flexible interphase. The impact strength of jute cloth reinforced unsaturated polyester matrix composites with flexible interphase incremental weight ratio of 1.2% is higher than that of jute cloth reinforced unsaturated polyester matrix composites without flexible interphase by about 45%. The impact energy after maximum load has increased significantly with all flexible interphase incremental weight ratios.
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Abellache, D., A. Lounis, K. Taïbi, and Abdul Aziz Bin Mohamed. "Contribution To Degradation Study, Behavior Of Unsaturated Polyester Resin Under Neutron Irradiation." In NEUTRON AND X-RAY SCATTERING IN ADVANCING MATERIALS RESEARCH: Proceedings of the International Conference on Neutron and X-Ray Scattering—2009. AIP, 2010. http://dx.doi.org/10.1063/1.3295584.

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Reports on the topic "Unsaturated polyester resin"

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ช่วยจุลจิตร์, เสาวรจน์, та อมร เพชรสม. การสังเคราะห์พอลิเอสเตอร์เรซินชนิดไม่อิ่มตัวจากขวดเพทที่ใช้แล้ว : รายงานผลการวิจัย (Synthesis of unsaturated polyester resin from PET waste bottles). จุฬาลงกรณ์มหาวิทยาลัย, 1994. http://dx.doi.org/10.58837/chula.res.1994.1.

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ขวดเพทที่ใช้แล้ว สามารถนำกลับมารีไซเคิล ด้วยการย่อยสลายทางเคมีโดยการไกลโคไลซ์ในไกลคอลปริมาณมากเกินพอ เช่น เอทิลีนไกลคอล, โพรพิลีนไกลคอล และไดเอทิลีนไกลคอล โดยมีซิงก์อะซีเตตเป็นตัวเร่งปฏิกิริยา ที่อุณหภูมิ 190 องศาเซลเซียสเป็นเวลา 8 ชั่วโมง ภายใต้บรรยากาศของก๊าซไนโตรเจน ผลที่ได้จากปฏิกิริยา ส่วนใหญ่จะเป็นบิสไฮดรอกซีเอทิล เทเรฟธาเลท (BHET) ซึ่งเป็นโมโนเมอร์ของเพท และเมื่อนำผลที่ได้นี้ ไปทำปฏิกิริยากับมาเลอิกแอนไฮไดรด์ และผสมกับสไตรีนโมโนเมอร์จะได้พอลิเอสเตอร์เรซินชนิดไม่อิ่มตัว ซึ่งสามารถทำให้แข็งตัว โดยการใช้เมทิลเอทิลคีโตนเปอร์ออกไซด์ (MEKPO) เป็นตัวเริ่มต้นปฏิกิริยา และโคบอลต์ออกโตเอตเป็นตัวเร่งปฏิกิริยา เมื่อเปรียบเทียบสมบัติทางกายภาพและสมบัติเชิงกล ระหว่างพอลิเอสเตอร์เรซินที่สังเคราะห์ได้จากขวดเพทที่ใช้แล้ว กับพอลิเอสเตอร์เรซินที่ใช้งานกันอยู่ทั่วไ ป พบว่าสมบัติด้านความแข็ง ความทนการดัดโค้ง และจุดอ่อนตัวของเรซินที่สังเคราะห์ได้จะสูงกว่าเรซินที่ใช้กันอยู่ทั่วไป เรซินที่ได้จากขวดเพทที่ใช้แล้ว จึงสามารถนำไปขึ้นรูปเป็นผลิตภัณฑ์ต่างๆ ได้ด้วยกรรมวิธีการหล่อ เช่นเดียวกับพอลิเอสเตอร์เรซินทั่วไป นอกจากนี้ ยังใช้ทำผลิตภัณฑ์ไฟเบอร์กลาส และหินอ่อนเทียม ได้อีกด้วย
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