用DSC和动态弹粘谱(DMS)研究了聚环氧氯丙烷聚氨酯/聚苯乙烯互穿聚合物网络[PU(PECH)/PSIPN]的玻璃化转变行为发现,当IPN中聚苯乙烯(PS)含量大于20%(质量分数)时,IPN是不相容体系,有两个玻璃化转变PS交链度的增加,对应于PU的玻璃化转变(TgⅠ)不变,对应于PS的玻璃化转变(TgⅡ)向高温方向移动,转变越来越不明显,加入氨酯反应催化剂时,Tg明显内移,TgⅡ内移超过20℃,相容性增加。
The glass transition behavior of various polyepichlorohydrin-based polyurethane/ polystyrene interpenetrating polymer networks [PU(PECH) / PSIPNs] was studied by the means of DSC and dynamic mechanical spectroscopy. The results show that when the PS conte
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