极性化SBS与PVC的抗冲改性  

THE PYRIDYL-FUNCTIONALIZED SBS AND IMPACT MODIFICATION OF PVC

作　　者：徐建波[1] 邬智勇[1] 夏金魁[1] 肖哲[1] 何其佳[2] 张爱民[2] 

机构地区：[1]巴陵石油化工有限责任公司,湖南岳阳414014 [2]高分子材料工程国家重点实验室四川大学高分子研究所,四川成都610065

出　　处：《高分子材料科学与工程》2005年第3期196-200,共5页Polymer Materials Science & Engineering

基　　金：国家重点基础研究发展规划项目(G1999064809);国家高技术研究发展计划(863计划2003AA333020)

摘　　要：利用元素分析、红外、TEM及DSC分析极性SBS的结构与性能,表明SBSVP中含有C、H、N元素,红外可观测到1473cm-1乙烯基吡啶特征峰的存在,电镜显示SBSVP中未染色的PS与PVP相区稍有增大,DSC表明,微量VP段的引入对原有SBS的两个玻璃化转变温度影响甚微,未造成原SBS明显的结构变化。利用极性SBS作为PVC的增韧改性剂或相容剂,效果优于SBS。The pyridyl-functionalized SBS synthesized by anionic polymerization with styrene, butadiene and vinylpyridine was investigated. The results characterized by the element analysis show that the content of SBSVP consists of C, H and N. The FT-IR spectra of SBSVP and SBS clearly indicate the only difference is the pyridine signal at 1473 cm^(-1). The existence of pyridyl in SBSVP can also be observed by TEM, but it shows no influence to the similar PS and PB two-phrase separate system characteristic of SBSVP by comparing the DSC curves of SBSVP and SBS. The impact strength of SBSVP modified PVC is much improved, so the effect of SBSVP modified PVC is better than of SBS. As the compatibilizer of PVC and SBS, SBSVP just like MBS, has better efficiency than EVA, SBS-g-MAH and SEBS-g-MAH.

关 键 词：极性SBS PVC改性 相容 

分 类 号：O631.11[理学—高分子化学]