涂层用环氧树脂基料的增韧改性研究

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1 h，冷却后添加固化剂，涂片、室温固化24 h，所得的涂层综合性能最佳，冲击强度可达41 kg.cm，附着强度可达 6.800 MPa，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。

Research on the Toughening Modification of Epoxy Resin Coating

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 °C, 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，he initial decomposition temperature of the EP skeleton in the air was 332.1 °C. 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.