Effect of different curing systems on the properties of epoxy powder coatingsChinese Full Text
HAN Jun-hua,LV Jian,XU Xiao-wei,BAI Ya-fei,WANG bing(Key Laboratory of New Processing Technology for Nonferrous Metals and Materials of Ministry of Education,Department of Material and Chemical Engineering,Guilin University of Technology,Guilin 541004,China)
Abstract: The curing behavior,thermal stability of the epoxy systems using dicyandiamide,diamino diphenyl sulfone and linear phenolic resin as curing agent respectively and 2-methylimidazole as curing accelerator and the properties of the epoxy power coatings prepared from them were investigated by DSC,TGA analysis and the mechanical property tests.The theoretic curing temperature of different curing systems was calculated using extrapolation methods.The results showed that the comprehensive properties of dicyandiamide/2-methylimidazole systems was the best and the values were as followed : theoretic curing temperature 142 ℃,initial decomposition temperature 410 ℃,impact resistant 50 cm,luster at 60°83,surface resistance 1.33×1012Ω.
Keywords：
dicyandiamide; 2-methylimidazole; curing; epoxy resin; powder coating; thermal stability; impact resistant;
- DOI：
10.13650/j.cnki.rgxsz.2011.01.009
- Series：
- Subject：
- Classification Code：
TQ323.5
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