双酚-S环氧树脂/聚氨酯互穿网络的热性能  

THERMAL PROPERTIES OF BISPHENOL-S EPOXY/POLYURETHANE INTERPENETRATING NETWORK

作　　者：李燕芳[1] 赵洪池[2] 刘艳红[1] 高俊刚[1] 

机构地区：[1]河北大学化学与环境科学学院,河北保定071002 [2]保定师范专科学校化学系,河北保定071051

出　　处：《热固性树脂》2005年第2期25-27,共3页Thermosetting Resin

摘　　要：研究了双酚-S环氧树脂/聚氨酯(BPSER/PU)互穿网络的性能。实验表明,完全固化后的双酚-S环氧树脂的玻璃化温度比双酚-A环氧树脂在相同条件下高40～50℃。通过动态力学谱仪(TBA)研究了BPSER与PU的配比和玻璃化温度之间的关系,讨论了两相间的相容性。结果表明,随着BPSER用量的增加,体系的玻璃化温度升高。m(BPSER)/m(PU)=25/75是两组分均匀混合的最佳值,形成了反应型互穿聚合物网络。另外,用热重分析仪(TGA)研究了完全固化后的互穿聚合物网络的热分解行为,结果表明,BPSER的加入可提高PU的初始热分解温度。Thermal properties of interpenetrating polymer networks(IPNs) based on bisphenol-S epoxy resin(BPSER) and polyureathne(PU) were characterizaed.The glass transition temperature(Tg) of the BPSER cured completely were 40～50 ℃,higher than that of BPAER at the same conditions.The relationship between Tg and the BPSER proportion were investigated by means of TBA.The results showed that the two phases had the best compatibility at the ratio of m(BPSER)/m(PU)=25/75,and the Tg values were increased with the increasing of the content of BPSER.The TGA result showed that thermal stability palso improved.

关 键 词：双酚-S环氧树脂 聚氨酯 互穿聚合物网络 玻璃化温度 热分解 

分 类 号：TQ317[化学工程—高聚物工业]