摘要
对聚氯乙烯（ＰＶＣ）／再生胶（ＲＲ）／硫化胶粉（ＶＲＰ）共混型热塑性弹性体的配方和加工工艺进行了研究。结果表明，在１６０～１７０℃条件下，采用二阶一段动态硫化法制成的热塑性弹性体，其拉伸强度为８．２ＭＰａ，扯断伸长率为２９０％，邵尔Ａ型硬度为７０±５，撕裂强度为４３ｋＮ／ｍ。流变试验和ＢｒａｂｅｎｄｅｒＧａｒｖｅｙ口型挤出均得到了外观较好的挤出物，共混物的热塑性级别为４级。
he recipe and process for the preparation of polyvinylchloride(PVC)/reclaimed rubber(RR)/vulcanized rubber powder(VRP)blended thermoplastic elastomer were studied.The results showed that the thermoplastic elastomer prepared by two stage dynamic vulcanization at 160～170 ℃ had tensile strength 8.2 MPa,elongation at break 290%,Shore A hardness 70±5 and tear strength 43 kN/m.The rheometry and Brabender Garvey die extrusion test both obtained extrudates with good appearance.
出处
《合成橡胶工业》
CAS
CSCD
1998年第2期84-87,共4页
China Synthetic Rubber Industry
关键词
聚氯乙烯
再生胶
硫化胶粉
共混型
热塑性弹性体
polyvinylchloride
reclaimed rubber
vulcanized rubber powder
dynamic vulcanization
blending thermoplastic elastomer
