中国塑料 ›› 2010, Vol. 24 ›› Issue (10): 85-88 .DOI: 10.19491/j.issn.1001-9278.2010.10.019

• 助剂 • 上一篇    下一篇

有机硅改性环氧树脂的制备及其性能研究

李美丽 杨祥 景录如 李倩 张院萍   

  1. 中国地质大学(武汉)
  • 收稿日期:2010-06-28 修回日期:1900-01-01 出版日期:2010-10-26 发布日期:2010-10-26

Preparation and Properties of Silicone Modified Epoxy Resin

LI Meili YANG Xiang JING Luru LI Qian ZHANG Yuanping   

  • Received:2010-06-28 Revised:1900-01-01 Online:2010-10-26 Published:2010-10-26
  • Contact: LI Meili

摘要: 利用三种乙氧基硅烷单体混合不完全水解合成含乙氧基的有机硅低聚物,使其与环氧树脂反应成功制备出有机硅改性环氧树脂。探讨了不同水解用水量的有机硅对改性树脂固化物冲击强度、弯曲强度和热稳定性的影响。结果表明,当水解用水量为完全水解用水量的0.5倍时,环氧树脂固化物的耐热性和韧性均有明显提高,冲击强度达14.07 kJ/m2,弯曲强度达26.73 MPa,50 %的质量热损失温度达424 ℃;比未改性的纯环氧树脂分别提高了10.23 kJ/m2,6.98 MPa和23 ℃。

关键词: 改性, 韧性, 耐热性, 有机硅低聚物, 环氧树脂

Abstract: Three kinds of ethoxy silicone monomers were mixed and underwent incomplete hydrolysis,and the product was reacted with epoxy resin forming a silicone modified epoxy resin. The influences of hydrolysis ratio on the impact strength,bending strength, and thermal stability of the cured resin was investigated. When the hydrolysis ratio 0.5,the impact strength was 14.07kJ/m2,bend strength was 26.73MPa,the temperature of 50%weight loss was 424℃, higher than those of unmodified epoxy resin by 10.23 kJ/m2,6.98 MPa,23℃ respectively.

Key words: modification, toughness, heat resistance, silicone prepolymer, epoxy resin