质子辐照对MQ硅树脂增强的加成型硅橡胶质损及热性能的影响

Effect of proton radiation on mass loss and thermal properties of additional silicone rubber reinforced with MQ resin

采用空间综合辐照模拟设备研究了100 keV和150 keV能量的质子辐照对MQ硅树脂增强的加成型硅橡胶的损伤及其对硅橡胶热性能的影响。试验结果表明:质子辐照后,硅橡胶表面出现损伤裂纹,随辐照能量和剂量的增加,裂纹的数量增多,裂纹增大;质子辐照后,硅橡胶的质量有所损失,其质损率随辐照能量和剂量的增加而增加;质子辐照后硅橡胶的耐热性随辐照剂量的增加先略有增加而后下降,经辐照后的硅橡胶在玻璃态和玻璃转变区的温度区间内收缩率降低,而在高弹态的温度区间内膨胀率增加。

The effect of proton radiation with the energy of 100 keV and 150 keV on thermal properties of additional silicone rubber reinforced with MQ resin by space combined radiation simulator was studied in this paper. The results showed that the aging crackle was produced on the surface of rubber after irradiation and the quantity and size of the crackle increased with the increase of irradiation energy and fluence, There was mass loss of silicone rubber after proton radiation and the mass loss percent increased with the increase of irradiation fluence. The thermostability of silicone rubber increased slightly first and then decreased with the increase of irradiation fluence. The shrinkage of silicone rubber reduced in the temperature range of vitreous state and vitrification transition region after proton radiation, and the expansivity of silicon rubber increased in the temperature range of highelasticity state.