改性环氧丙烯酸酯预聚物的制备

The Preparation of Epoxy Acrylate Pre-Polymers Modified by Isocyanate

丛玉凤 张春雪 黄 玮

Cong Yufeng Zhang Chunxue Huang Wei

(辽宁石油化工大学化学化工与环境学部,辽宁抚顺113001

College of Chemistry，Chemical Engineering and Environmental Engineering，Liao Shihua University，Fushun Liaoning 113001, China

关键词: 环氧丙烯酸酯, 预聚物, 改性

The prepared epoxy acrylate was modified by toluene diisocyanate (TDI), affording the urethane modified acrylate pre-polymer with interpenetrating network structure. The effects of modifier dosage, reaction time, reaction temperature, catalyst type and amount on the conversion rate were studied. Infrared spectroscopy was used to characterize the structure of the modified product. In the mean time, the modified product ensile strength of the cured film and curing film elongation at break were analyzed. The highest conversion rate was obtained under the following condition: the amount of modifying agent (TDI) and epoxy acrylate mole ratio was 0.25∶1, reaction time 5 h, the reaction temperature was 75 ℃, the mass ratio of the composite catalyst（triethylamine and DBTD）was 1:1, added in an amount of 0.1%. IR spectra confirmed the formation of the modified pre-polymer.

抚顺市科技攻关项目“乙烯副产物碳九馏分的应用研究”(FSKJHT201378)。

10.3696/j.issn.1672-6952.2016.02.006