PVC/弹性体/气相法白炭黑复合体系的结构与性能  

Structure and Properties of PVC/Elastomer/ Fumed Silica Composites

作　　者：杨波[1] 何慧[1] 陈秀娉 贾德民[1] 

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510640 [2]广州市建筑材料工业研究所有限公司,广东广州510000

出　　处：《塑料工业》2005年第4期40-42,60,共4页China Plastics Industry

摘　　要：用韧性贡献率探讨了弹性体氯化聚乙烯(CPE)、纳米级气相法白炭黑(SiO2 )对聚氯乙烯(PVC)的协同增韧效果,并用电子显微镜(SEM、TEM)观察了冲击断面和超薄切片的形貌。结果表明,适合的加工工艺和SiO2 表面硅羟基与PVC基体之间的相互作用使未经表面处理的气相法白炭黑能以纳米级均匀分散在基体中;PVC/CPE/SiO2(10 0 /6/4 )的10 %热失重温度比纯PVC高9℃。The toughening effect of chlorinated polye thylene (CPE) and nano-mete r fumed silica (SiO 2) on polyvinyl chlorid e (PVC) was investigated by means of to ughness contribution rate, the mechanical properties of the composite were also studied. The morphologies of the impact cro ss sections and ultra-thin slice of t he composite were observed by SEM and TEM. T he results indicated that suitable p rocessing technology and the interaction b etween the silanol groups of SiO 2 surf ace and PVC matrix made fumed silica well di spersed in the matrix by nano-meter size, even the fumed silica particles had n ot been treated. The results of TG cu rves showed that the 10% thermal-mass-loss temperature of PVC/C PE/SiO 2(100/6/4) was 9℃ higher than that o f pure PVC.

关 键 词：气相法白炭黑 弹性体 结构与性能 复合体系 聚氯乙烯(PVC) 氯化聚乙烯 电子显微镜 增韧效果 超薄切片 冲击断面 均匀分散 表面处理 相互作用 SiO2 加工工艺 失重温度 纳米级 贡献率 硅羟基 CPE 基体 

分 类 号：TQ320.4[化学工程—合成树脂塑料工业]