中文摘要：

研究硫酸钙晶须制备方法和用量对室温硫化硫酸钙晶须/硅橡胶复合材料性能的影响。结果表明,当硫酸钙晶须用量为10份时,复合材料的物理性能总体提高显著。扫描电子显微镜分析结果显示,烟气脱硫法硫酸钙晶须杂质较多,在硅橡胶中分散不均匀;电石渣法硫酸钙晶须内部结构完整,在硅橡胶中分散均匀。随着硫酸钙晶须用量增大,硅橡胶的粘度增大。热重分析结果显示,与烟气脱硫法硫酸钙晶须相比,电石渣法硫酸钙晶须对复合材料热稳定性能的改善较明显。

英文摘要：

The influence of preparation method and addition level of calcium sulfate whisker on the properties of room temperature vulcanized silicone rubber/calcium sulfate whisker composite was investigated.The results showed that,as the addition level of calcium sulfate whisker was 10 phr,the physical properties of composite were improved significantly.The SEM analysis result showed that,the calcium sulfate whisker prepared by gas desulfurization method possessed more impurities,and was dispersed unevenly in silicone rubber;the calcium sulfate whisker prepared by carbide slag method had better integrated internal structure,and was dispersed uniformly in silicone rubber.As the addition level of calcium sulfate whisker increased,the viscosity of silicone rubber increased.The TG analysis result showed that,compared with gas desulfurization method,the calcium sulfate whisker prepared by carbide slag method provided the composite better thermal stability.