Synthesis and characterization of graft modified high heat-resistant vinyl resin

doi:10.19936/j.cnki.2096-8000.20250928.006

Abstract

Abstract: Three acrylate prepolymers were synthesized from hydroxyethyl methacrylate (HEMA), pentaerythritol triacrylate (PETA) or dipentaerythritol pentaacrylate (DPHA) and isophorone diisocyanate, reacting at a molar ratio of 1∶1. Then the prepolymers were grafted to phenolic vinyl ester resins by the catalysis of dibutyltin dilaurate (DBTDL). The heat distortion temperature (HDT), glass transition temperature (T_g), and thermal decomposition temperature of different acrylate grafted vinyl resins were studied. It is revealed that 20wt% DPHA prepolymer graft vinyl resin behaved the best heat resistant property, with HDT of 230 ℃, T_g of 220 ℃ and 5wt% thermal decomposition temperature of about 330 ℃.

Key words: acrylic ester, vinyl resin, heat resistance, graft modification

CLC Number:

TB332

LIU Hua, TANG Wenjin, LIU Zhengbiao, CHEN Jianhui, SHU Da, LIU Shiqiang. Synthesis and characterization of graft modified high heat-resistant vinyl resin[J]. COMPOSITES SCIENCE AND ENGINEERING, 2025, 0(9): 42-46.

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