含环氧基的丙烯酸酯共聚物改性环氧树脂

Modification of Epoxy Resins with Epoxide-Containing Acrylic Copolymers

合成了一系列含环氧基团的丙烯酸酯聚合物（HGMB），并对其改性环氧树脂／4，4'-二氨基二苯基甲烷的抗冲性能、动态力学行为进行了考察．结果表明：当改性体系中加人质量分数为15％的HGMB（甲基丙烯酸缩水甘油酯、甲基丙烯酸羟乙基酯、甲基丙烯酸甲酯、丙烯酸丁酯的摩尔分数分别为4．3％，5％，25．7％，65％）时，与空白体系相比，改性体系的冲击强度提高50％，且玻璃化温度有所提高，模量没有降低．

Materials for Adsorption and Separation,Nankai University,Tianjin 300071 )Abstract A series of epoxide-containing acrylic polymer modifiers (HGMB) were synthesized. The dynamic mechanical behavior and impact strengths of the modified systems,epoxy resin E-51/4, 4' -diaminodiphenylmethane (DDM )/HGMB, were investigated. Theresults showed that both the structure and amount of the modifiers affected the impactstrength and modulus of the modified systems significantly. The addition of 15%(mass fraction) HGMB(4.3% glycidyl methacrylate(GMA), 5 % hydroxyethyl methacrylate(HEMA),25. 7% methyl methacrylate (MMA) and 65 % butyl acrylate (BA) (mole fraction)) resultedin a 50% increase in impact strength and an obvious increase in Tg of the modified system butonly little loss of its modulus.