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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and characterization of bismaleimide (N,N '-bismaleimido-4,4 '-diphenyl methane)-vinyl ester oligomer-modified unsaturated polyester interpenetrating matrices for advanced composites
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Preparation and characterization of bismaleimide (N,N '-bismaleimido-4,4 '-diphenyl methane)-vinyl ester oligomer-modified unsaturated polyester interpenetrating matrices for advanced composites

机译：先进复合材料双马来酰亚胺（N，N'-双马来酰亚胺-4,4'-二苯基甲烷）-乙烯基酯低聚物改性的不饱和聚酯互穿基质的制备和表征

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摘要

Interpenetrating networks of varying percentages of bismaleimide (BMI) in vinyl ester oligomer (VEO) modified unsaturated polyester (UP) matrices have been developed. Vinyl ester oligomer was prepared by reacting commercially available epoxy resin GY 250 (Ciba-Geigy) and acrylic acid, and used as a toughening agent for unsaturated polyester resin. Unsaturated polyesters modified with 10, 20, and 30 wt % vinyl ester oligomer were made. The VEO toughened unsaturated polyester matrix systems, further modified with 5, 10, and 15 wt % bismaleimide (BMI). BMI-VEO-UP matrices were characterized using differential scanning calorimetry, thermogravimetric analysis, and heat deflection temperature analysis. The matrices, in the form of castings, were characterized for their mechanical properties according to ASTM methods: tensile strength, flexural strength, and unnotched Izod impact test. Data obtained from mechanical studies and thermal characterization indicate that the introduction of VEO and BMI into unsaturated polyester resin improves thermomechanical properties according to their percentage concentration. (C) 2002 Wiley Periodicals, Inc. [References: 19]
机译：已经开发了乙烯基酯低聚物（VEO）改性不饱和聚酯（UP）基质中不同百分比的双马来酰亚胺（BMI）互穿网络。通过使市售环氧树脂GY 250（Ciba-Geigy）与丙烯酸反应制备乙烯基酯低聚物，并将其用作不饱和聚酯树脂的增韧剂。制备了用10、20和30重量％的乙烯基酯低聚物改性的不饱和聚酯。 VEO增韧的不饱和聚酯基质体系，进一步用5、10和15 wt％的双马来酰亚胺（BMI）改性。使用差示扫描量热法，热重分析和热变形温度分析对BMI-VEO-UP矩阵进行表征。根据ASTM方法，对铸件形式的基体的机械性能进行了表征：抗张强度，弯曲强度和无缺口的悬臂梁式冲击试验。从机械研究和热表征获得的数据表明，将VEO和BMI引入不饱和聚酯树脂中会根据其百分比浓度改善热机械性能。 （C）2002 Wiley Periodicals，Inc. [参考：19]

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