聚氨酯基互穿网络聚合物阻尼材料聚合工艺的研究

Studies of IPNs polymerization technics based on polyurethane networks

以合成的网状聚氨酯为基，采用“同步”互穿聚合物网络化技术、引入甲基丙烯酸甲酯聚合体系，通过改变聚氨酯和聚甲基丙烯酸甲酯软硬段配比、软段中异氰酸酯和羟基比例以及交联密度等因素，合成了一系列互穿网络聚合物（IPNs），通过正交实验设计考察了各因素的影响递次，确定出最佳合成工艺，并采用频率响应法测定了材料的阻尼性能，用PE－TMA热分析仪检测其玻璃化转变温度区间。

A series of interpenltrating polymer networks (IPNs) based on polyurethane (PU) and poly(methyl mehacrylate) (PMMA) networks were formed by simultaneously polymerization method varied with the ratios of -NCO: -OH, PU: PMMA, and crosslinking density. The damping properties were measured by means of frequenting response, and glass transition temperature was analyzed by PE-TMA thermal mechanic analysis.