一种中温快速热固化单组份环氧胶制备

Preparation of a Medium Temperature Fast Heat Curing Single Component Peroxo Glue

采用液体双酚A型环氧树脂、季戊四醇四-3-巯基丙酸酯、咪唑类固化剂、碳酸钙、KH-560、气相二氧化硅、稳定剂等为原料,制备了一种中温快速固化的环氧胶粘剂,并研究了季戊四醇四-3-巯基丙酸酯、咪唑类促进剂、碳酸钙等填料对环氧胶粘剂表干和粘接等性能的影响。结果表明:当双酚A型环氧树脂、季戊四醇四-3-巯基丙酸酯、咪唑类固化剂质量比为100:75:3,碳酸钙用量为40%,固化条件为80℃/30min时,可得到粘接强度为23MPa,稳定性和耐候性优异的高性能中温快速固化环氧胶粘剂。

Using liquid bisphenol A epoxy resin, pentaerythritol tetra-3-mercaptoproponic acid Ester, imidazole curing agent, calcium carbonate, KH-560, gas phase silica, stabilizer, etc. as raw materials, A medium temperature rapid curing epoxy adhesive was prepared, and the effects of pentaerythritol tetra-3-mercaptoproate, imidazole accelerators, calcium carbonate fillers on the surface dry and adhesive properties of epoxy adhesives were studied. The results showed that the mass ratio of bisphenol A epoxy resin, pentaerythritol tetra-3-mercaptoproponic acid Ester, imidazole curing agent was 100:75:3, the calcium carbonate dosage was 40%, and the curing condition was 80℃./30 min, A high performance medium temperature fast curing epoxy adhesive with strength of 23 MPa and excellent stability and weathering resistance can be obtained.