摘要
本文选用聚环氧氯丙烷(PECH)、甲苯二异氰酸酯(TDI)和三甲醇丙烷(TMP)组成网络Ⅰ,甲基丙烯酸甲酯(MMA)和乙二醇二甲基丙烯酸酯(EGDM)组成网络Ⅱ,制成了一组 IPN 材料,研究了它们的动态力学性能。动态力学损耗谱表明:这组 IPN 的阻尼因子 tanδ在很宽的温度范围有较高的值。文中详细讨论了聚合反应条件、网络组成、交联度对阻尼因子以及相容性的影响。
Interpenetrating polymer networks(IPNs)based on polyepichlorohydringlycol(PECH),Toluene diiocyanate(TDI)and trihydroxymethy propane(TMP)as net-work Ⅰ and methyl methyacrylate(MMA)-ethyleneglycol dimethacrylate(EGLM)as net-work Ⅱ were synthesized by using thermo-and photo-polymerization sequentially.The dynamic mechanical property of the IPNs was also studied.It is demonstratedthat the damping factor representing by loss tangent,tan δ,is fairly high in a very broadrange of temperature.The polymerization condition,network components and crosslinkdegree influence on the damping factor,tan δ,as well as compatibility were discussed.
关键词
聚氨酯
PECH
互穿网络
聚合物
合成
interpeneterating polymer networks
polyepichlorohydrinpolyurethane
polymeric damping materials
