摘要
研究了加工工艺对硅橡胶力学性能的影响。结果表明,随着碳纳米管含量的增加,硅橡胶的力学性能先上升后下降。当拉伸方向与压延方向平行时,硅橡胶的拉伸强度较大,而撕裂强度较小。延长压延时间,能提高硅橡胶的力学性能,并且使橡胶试样各部分的性能更均匀。长径比较小的碳纳米管增强硅橡胶的效果较好。由扫描电镜观察拉伸试样断面可知,长径比较小的碳纳米管比长径比大的在硅橡胶中的分散更均匀。碳纳米管在橡胶基体中拔出现象明显且表面光滑,说明碳纳米管与硅橡胶的界面作用较弱。
In this paper, the effect of processing technology on the properties of silicone rubber was studied. The results showed that,with the increase of the content of carbon nanotubes, the mechanical properties of silicone rubber increased firstly and then decreased;When parelleling stretching direction with the rolling direction,the tensile strength was better,but the tear strength was less;After prolonging the rolling time,not only the mechanical properties of silicone rubber were improved.but also the performance of each part of the rubber specimen was more unitbrm. ＂I＇hrough the tensile samples＇ sections observed by SEM,the carbon nanotubes of small diameter ratio were dispered more uniformly in rubber matrix than those of long diameter ratio;Carbon nanotubes were extracted in the rubber matrix markedly and the surface was smooth, indicating the interface of carbon nanotubes and silicone rubber was weak.
出处
《世界橡胶工业》
2016年第10期30-34,共5页
World Rubber Industry
关键词
碳纳米管
加工工艺
硅橡胶
力学性能
Carbon Nanotubes
Processing Technology
Silicone Rubber
Mechanical Property
