真空紫外辐照对MQ增强硅橡胶热性能及光学性能的影响

 采用空间综合辐照模拟设备研究了真空紫外辐照对MQ增强加成型硅橡胶的表面形貌、质量损失、热性能及光学性能的影响。试验结果表明：真空紫外辐照后，硅橡胶表面出现损伤裂纹，随辐照剂量的增加，裂纹的数量增多；真空紫外辐照后，硅橡胶的质量有所损失，其质损率随辐照剂量的增加而增加；真空紫外辐照后硅橡胶的耐热性随辐照剂量的增加先增加而后下降；真空紫外辐照对硅橡胶材料的体膨胀/收缩变形影响不大，但对材料的光学性能有较大影响，随着辐照剂量的增加，材料的光学透过率下降。

Effect of VUV irradiation on thermal properties and optical property of silicone rubber reinforced with MQ resin

The effect of vacuum ultraviolet (VUV) irradiation on the surface morphology, mass loss, thermal properties and optical property of the additional silicone rubber reinforced with MQ resin was studied by space combined radiation simulator. The results showed that the aging crackle was produced on the surface of rubber after irradiation and the quantity of the crackle increased with the increase of irradiation dose. There was mass loss of the silicone rubber after VUV irradiation and the mass loss percentage increased with the increase of irradiation dose. The thermostability of the silicone rubber increased firstly and then decreased with the increase of irradiation dose. The VUV irradiation had little effect on the body inflation/shrinkage distortion of the silicone rubber, but it had sign