本文描述了端乙烯基聚环氧丙烷/聚苯乙烯网状共聚物的合成及表征。研究了非交联组份对共聚物的玻璃化转变温度T_g,贮能模量E’、耗能模量E’和阻尼系数tanδ等动态力学性能的影响,计算了试样的粘弹性参数。结果表明,非交联组份对交联网有明显塑化作用,使其T_g降低,自由体积分数和阻尼系数增大。 This paper describes the synthesis and characterization of terminal vinylpoly (propylene oxide) / polystyrene network copolymers. The effects of non-crosslinked components on the dynamic mechanical properties such as the glass transition temperature T_g, storage modulus E ’, energy dissipation modulus E’ and damping coefficient tanδ of the copolymer were studied. The viscoelastic parameters of the samples were calculated. The results show that the non-crosslinked components have a significant plasticizing effect on the crosslinked network, resulting in a decrease of T_g and an increase of the free volume fraction and the damping coefficient.