Curing mechanism of TDE-85/MeTHPA epoxy resin modified by polyurethane

来源期刊：中南大学学报(英文版)2007年第3期

论文作者：李芝华 郑子樵 任冬燕 黄耀鹏

文章页码：296 - 300

Key words：polyurethane; epoxy resin; modification; curing mechanism

Abstract: Diglycidyl 4,5-epoxy tetrahydro phthalate/methyl tetrahydrophthalic anhydride (TDE-85/MeTHPA) epoxy resin modified by polyurethane (PU) was prepared with 1,4-butanediol (1,4-BDO), trimethylol propane (TMP) and polyurethane prepolymer synthesized by polypropylene glycol and toluene diisocynate. Chemical reaction and curing mechanism of this system were discussed by incorporating the results of infra spectrum analysis. The results indicate that the epoxy polymeric networkⅠis obtained by the curing reaction between TDE-85 and MeTHPA, while the PU polymeric network Ⅱ is obtained by the chain-extended and crosslinking reaction between 1,4-BDO, TMP and polyurethane prepolymer(PUP). The graft chemical bonds are formed between polymer networksⅠ and Ⅱ that therefore increase the degree of blend and compatibility between epoxy polymer and PU.

基金信息：the National High-Tech Research and Development Program of China