【摘要】 为进一步提高RTVSR的各项性能,近年来虽有针对其各项性能的纳米粒子改性研究,但是从力学性能上的研究和成果并不多。介绍了用金红石型纳米级TiO2共混改性RTVSR,得到一种新型的耐老化和力学性能优良的防污闪绝缘复合涂料。通过研究复合材料的力学性能并与空白RTVSR进行对比,进一步采用FT-IR、XRD、SEM等先进仪器分析了纳米复合材料的化学结构,确定了当TiO2添加量为6%时,断裂伸长率达到了345%,拉伸强度为0.27 MPa。从复合材料的基本电气性能测试结果可知,通过纳米粒子改性的RTVSR依然保持了良好的绝缘和憎水性能。试验结果表明,改性后的复合涂料力学和憎水性能优异,且保持了良好的电气性能。更多还原

【Abstract】 For the past few years,there are some research about the nano-particles modification of RTVSR,but not have favorable research findings on mechanical properties and other performance.A new insulated coating of pollution flashover for outdoor insulators is discussed,which is modified from the RTV silicone rubber by blending with rutile nano-TiO₂ in present paper.The mechanical characteristic of the nano-composite have been investigated.It is analyzed and compare with that of pure RTV silicone rubber,with the help of FT-IR and FT-Raman、XRD、SEM,and also the chemical frame of RTV silicone rubber.The results show that the optimal content of nano-TiO₂ in the RTV silicone rubber is six percents.The elongation at break is 345%,and tensile strength is 0.27 MPa.The experiment indicates that nano-composite has excellent mechanical capability and outstanding hydrophobicty,and remains good electrical properties.更多还原