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采用脂肪族环氧树脂(EP-664)与丙烯酸(AA)合成了低黏度的含有环氧基的丙烯酸酯(AEG),该反应性酯类化合物与双酚A型环氧树脂(E-44、EP-6002)共混,以甲基六氢苯酐(MeHHPA)为固化剂,并分别采用三级胺和2-乙基-4-甲基咪唑(2E4MZ)为促进剂,通过混合物黏度曲线的变化与其固化物力学性能的测试,研究了AEG含量对环氧树脂体系黏度的变化和固化物力学性能的影响。结果显示,AEG的添加可以有效地降低树脂体系的黏度,25℃下混合体系黏度仅为300～600mPa·s;其固化物的力学性能随AEG含量的增加先增加后降低,具有最大值。三级胺固化体系的力学性能明显优于2E4MZ固化体系,当w(AEG)为20%时,固化物的综合力学性能最好。
A low viscosity epoxy-containing acrylate (AEG) was synthesized with an aliphatic epoxy resin (EP-664) and acrylic acid (AA) with a bisphenol A epoxy resin , EP-6002) with methyl hexahydrophthalic anhydride (MeHHPA) as curing agent and tertiary amines and 2-ethyl-4-methylimidazole (2E4MZ) as accelerators respectively. Changes and the mechanical properties of its cured product, the effect of AEG content on the viscosity of the epoxy resin system and the mechanical properties of the cured product was investigated. The results showed that the addition of AEG could effectively reduce the viscosity of the resin system. The viscosity of the mixed system was only 300-600 mPa · s at 25 ℃. The mechanical properties of the cured product first increased, then decreased with the increase of AEG content, and reached its maximum value. The mechanical properties of the tertiary amine curing system are obviously better than those of 2E4MZ curing system. When w (AEG) is 20%, the mechanical properties of the cured product are the best.