交联型聚丁氧基磷腈弹性体的合成及表征  

Synthesis and characterization of crosslinked polybutoxyphosphazene elastomer

作　　者：叶巍[1] 耿越[2] 张婷婷[2] 张立群[1] 王秀芬[1] YE Weia GENG Yueb ZHANG Ting-tingb ZHANG Li-quna WANG Xiu-fena(a. College of Materials Science and Engineerin b. Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China)

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]北京化工大学北京市新型高分子材料制备与加工重点实验室,北京100029

出　　处：《合成橡胶工业》2017年第2期90-93,共4页China Synthetic Rubber Industry

基　　金：北京市与中央在京高校共建项目(2050205)

摘　　要：采用线型聚二氯磷腈作中间体,与正丁醇钠和乙二醇单钠分别进行侧基取代反应,制备了线型聚丁氧基磷腈(PBBP)和交联型聚丁氧基磷腈(PEBBP)弹性体,并对二者的性能进行了对比。结果表明,PBBP侧基上的羟基之间脱水形成醚键,从而形成交联结构的PEBBP。PEBBP的热稳定性优于PBBP,当交联度为0~0.35时,PEBBP仍具有低于-80℃的玻璃化转变温度。相比于PBBP,PEBBP的拉伸强度显著增大,扯断伸长率明显下降。随着交联度的增加,PEBBP的拉伸强度增大,扯断伸长率减小。Linear polybutoxyphosphazene （PBBP） and erosslinked polybutoxyphosphazene （ PEBBP ） elastomer were prepared by side substitution reactions of intermediate polydichlorophosphazene seperated with sodium n-butoxide and sodium ethylene glycol. And the comparision between the properties of PBPP with PEBBP were conducted. The results showed that the ether bond was obtained by dehydration of hy- droxyls on the PBBP side groups, and then the crosslinked structure of PEBBP formed. The thermalstability of PEBBP was better than PBBP, and when the crosslinking degree of PEBBP was 0 - 0. 35, the glass transition temperature of PEBBP was still below -80 ℃. Compared with PBBP, the tensile strength of PEBBP increased evidently, and the elongation at break decreased markedly. With the increase of crosslingking degree, the tensile strength of PEBBP increased and the elongation at break decreased.

关 键 词：聚丁氧基磷腈 弹性体 热稳定性 力学性能 

分 类 号：TQ334[化学工程—橡胶工业]