...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polymers for advanced technologies >Curing behavior and toughening performance of epoxy resins containing hyperbranched polyester
【24h】

Curing behavior and toughening performance of epoxy resins containing hyperbranched polyester

机译：含超支化聚酯的环氧树脂的固化行为和增韧性能

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

The effects of the hyperbranched polyester with hydroxyl end groups (HBPE-OH) on the curing behavior and toughening performance of a commercial epoxy resin (diglycidyl ether of bisphenol A, DGEBA) were presented. The addition of HBPE-OH into DGEBA strongly increased its curing rate and conversion of epoxide group due to the catalytic effect of hydroxyl groups in HBPE-OH and the low viscosity of the blend at curing temperature. The improvements on impact strength and critical stress intensity factor (or fracture toughness, K{sub}(1C)) were observed with adding HBPE-OH. The impact strength was 8.04 kjm{sup}(-1) when HBPE-OH reached 15wt% and the K{sub}(1C) value was approximately two times the value of pure epoxy resin when HBPE-OH content was 20wt%. The morphology of the blends was also investigated, which indicated that HBPE-OH particles, as a second phase in the epoxy matrix, combined with each other as the concentration of HBPE-OH increased.
机译：提出了具有羟基端基的超支化聚酯（HBPE-OH）对市售环氧树脂（双酚A的二缩水甘油醚，DGEBA）的固化行为和增韧性能的影响。由于HBPE-OH中羟基的催化作用以及共混物在固化温度下的低粘度，向DGEBA中添加HBPE-OH极大地提高了其固化速率和环氧基的转化率。加入HBPE-OH后，观察到冲击强度和临界应力强度因子（或断裂韧性​​，K {sub}（1C））的改善。当HBPE-OH达到15wt％时，冲击强度为8.04kjm {sup}（-1），并且当HBPE-OH含量为20wt％时，K {sub}（1C）值约为纯环氧树脂的两倍。还研究了共混物的形态，这表明作为环氧基质中第二相的HBPE-OH颗粒随着HBPE-OH浓度的增加而彼此结合。

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