Thermooxidative aging studies on silicone rubber and lifetime prediction
Silicone rubber have been aged in air while under 25% compression at temperature up to 250℃.These studies examined the compression set of silicone rubber at accelerated (elevated) temperatures and were then used to make predictions about compression set at room temperature.The data obtained could be amenable to time temperature superposition and Arrhenius treatment.The results suggest the presence of two degradation processes with activation energies of 71.6 kJ mol-1 (for temperatures above 165 ℃) and 26.08 kJ mol-1 (for temperatures below 165℃).Based on the extrapolation of the non-Arrhenius behavior,it was estimated that significant compression set loss would occur after around 67 years at 25℃.
aging silicone rubber compression set activation energy non-Arrhenius lifetime prediction
You-shan wang Jiang sha-sha Liu yu-peng
Center for Composite Materials,Harbin Institute of Technology,Harbin 150001,China
国内会议
北京
英文
686-689
2013-09-10（万方平台首次上网日期，不代表论文的发表时间）