摘要
采用加速老化试验方法对硅橡胶泡沫材料的热氧老化性能进行了研究,获得了不同老化温度及老化时间对硅橡胶泡沫材料压缩永久变形及压缩位移—载荷曲线的影响规律。从理论上分析了硅橡胶主链结构在热氧老化过程中的变化,并结合硅橡胶泡沫材料的微观泡孔结构变化,提出了硅橡胶泡沫材料的热氧老化机理。
In this paper, the thermal-oxydative ageing properties of silicone rubber foam materials were investigated by using accelerated ageing test, then the relations between different ageing temperature and ageing time and compression mechanical properties of silicone rubber foam materials were obtained. Finally, the ageing mechanisms of silicone rubber foam materials were deduced from some analyses, not only the molecule chain structure changes of silicone rubber during thermal-oxydative process, but also the cellular structure changes of silicone rubber foam materials under compression states.
出处
《合成材料老化与应用》
2007年第3期18-21,共4页
Synthetic Materials Aging and Application
关键词
硅橡胶泡沫材料
老化机理
主链结构
泡孔结构
silicone rubber foam materials
ageing mechanism
molecule chain structure
cellular structure