摘要
采用氨基硅油对环氧树脂(E-51)进行增韧改性研究。探讨了改性工艺、氨基硅油的用量对环氧树脂涂层的表观和力学性能的影响;比较了环氧树脂改性前后的化学结构和热稳定性。结果表明,6%氨基硅油与环氧树脂E-51室温混合,再在50℃下搅拌反应1h,冷却后添加固化剂,涂片、室温固化24h,所得的涂层综合性能最佳,冲击强度可达41kg.cm,附着强度可达6.800MPa,空气气氛下骨架的最初分解温度可达332.1℃;改性过程中,氨基硅油上的伯胺与环氧树脂上的环氧基反应生成了仲胺,两者以C—N—C的形式键合在一起。
The toughening of epoxy resin （EP） with amino silicone oil （AS） was studied. Chemical structure and thermal stability of cured EP with or without AS was compared. In a preferred process, 6 % AS was introduced into EP, stirred for 1 h at 50 ℃, after cooled down to room temperature, a curing agent was added and cast to a film and cured for 24 h at room temperature. Thus obtained film gave rise to the optimal comprehensive properties： impact strength was 41 kg · cm, the adhesion strength was 6. 800 MPa, the initial decomposition temperature of the EP skeleton in the air was 332. 1 ℃. During the curing process, AS was bonded with EP in the form of the C--N--C bond because the primary amine of AS reacted with the epoxy groups of EP to generate a secondary amine.
出处
《中国塑料》
CAS
CSCD
北大核心
2013年第3期63-67,共5页
China Plastics
关键词
环氧树脂
氨基硅油
改性
冲击性能
热稳定性
epoxy resin
amino silicone oil
modification
impact strength
thermal stability
作者简介
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