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在加热熔融的氰酸酯树脂(BADCy)中加入甲基丙烯酸甲酯(MMA)单体(同步合成法)或MMA预聚体(异步合成法)并引发使其发生本体聚合,制备了具有半互穿聚合物网络结构的氰酸酯树脂/聚甲基丙烯酸甲酯(BADCy/MMA-SIPN),通过力学性能测试,红外及DSC分析研究了MMA含量对体系力学性能和热性能的影响。结果表明,互穿网絡的形成使氰酸酯树脂体系的力学性能和耐热性能都有较大的提高,冲击强度、弯曲强度及玻璃化温度分别提高了97.8%、58.6%和65℃。
A methyl methacrylate (MMA) monomer (synchronous synthesis method) or an MMA prepolymer (asynchronous synthesis method) was added to a heated and melted cyanate ester resin (BADCy) and initiated to undergo bulk polymerization. The effects of MMA content on the mechanical and thermal properties of the system were investigated by mechanical properties testing, infrared and DSC analysis. The results show that the formation of interpenetrating network increases the mechanical properties and heat resistance of cyanate ester resin system. The impact strength, flexural strength and glass transition temperature increase by 97.8%, 58.6% and 65 ℃, respectively.