文献类型：期刊文献

中文题名：硅灰石晶须增强高温硫化硅橡胶发泡工艺

英文题名：Foaming of Wollastonite Whisker-reinforced Silicone Rubber

作者：付善菊[1];韩哲文[1];吴平平[1]

机构：[1]华东理工大学高分子材料系,上海200237

年份：2001

卷号：27

期号：2

起止页码：165

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：硅灰石;发泡硅像胶;孔隙率;孔径;化泡工艺

外文关键词：wollastonite; foamed silicone rubber; void fraction; cell size

摘要：采用硅灰石晶须增强硅橡胶 ,研究了用化学发泡的方法制备发泡硅橡胶时 ,影响发泡硅橡胶的孔隙率及孔径大小的因素。结果表明 ,在 1 2 0°C预发泡时 ,预发泡时间在 3～ 6min内、二次发泡温度在 1 80°C、发泡剂 H和助发泡剂明矾的用量均为硅橡胶用量的 5%、硅灰石晶须的用量控制在硅橡胶用量的 2倍内时发泡效果较好。增大发泡压力有利于减小泡孔孔径 。
Foamed silicone rubber composites reinforced with wollastonite are prepared by chemical foaming method. Effects of several factors on the void fraction and cell size of silicone rubber are fully studied. The results show that when the composites are pre foamed at 120°C, the best properties will be achieved when the pre curing time is 3～6min, the second foaming temperature is 180°C, the content of foaming agent and blowing promoter is both 5% of silicone rubber and the amount of wollastonite is not higher than 2 times of silicone rubber. Higher foaming pressure will lead to smaller cell size. However, too high foaming pressure may lower the void fraction.