• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Control of shrinkage and final conversion of vinyl ester resins cured in low-temperature molding processes
【24h】

Control of shrinkage and final conversion of vinyl ester resins cured in low-temperature molding processes

机译：控制在低温成型过程中固化的乙烯基酯树脂的收缩率和最终转化率

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Vinyl ester resin is a major thermoset polymer used in low-temperature composite manufacturing processes such as the Seemann composite resin infusion-molding process (SCRIMP). Volume shrinkage and residual styrene are important concerns for composites produced in such processes. A low-shrinkage additive (LSA) is a typical agent added to control the volume shrinkage of vinyl ester resins during molding. In this study, the effects of LSA content and the temperature profile (the temperature gradient and peak temperature) on the volume shrinkage control of a vinyl ester resin were investigated. The reaction kinetics of the resin system were also studied. We achieved good volume shrinkage control if we raised the curing temperature slowly to allow sufficient time for phase separation and if the curing temperature reached a high value after phase separation to allow microvoid formation. On the basis of experimental results, we designed an improved SCRIMP to increase resin conversion, reduce resin shrinkage, and produce composites with better properties. (C) 2003 Wiley Periodicals, Inc. [References: 22]
机译：乙烯基酯树脂是一种主要的热固性聚合物，可用于低温复合材料制造工艺中，例如Seemann复合树脂灌注成型工艺（SCRIMP）。体积收缩率和残余苯乙烯是这种方法生产的复合材料的重要问题。低收缩添加剂（LSA）是添加的典型试剂，可控制模塑过程中乙烯基酯树脂的体积收缩。在这项研究中，研究了LSA含量和温度曲线（温度梯度和峰值温度）对乙烯基酯树脂体积收缩控制的影响。还研究了树脂体系的反应动力学。如果我们缓慢提高固化温度以留出足够的时间进行相分离，并且在相分离后固化温度达到较高的值以形成微孔，则可以实现良好的体积收缩控制。根据实验结果，我们设计了一种改进的SCRIMP，以提高树脂转化率，减少树脂收缩率并生产性能更好的复合材料。 （C）2003 Wiley Periodicals，Inc. [参考：22]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号