高疏水性硅橡胶防污闪涂料的制备及其性能研究  

Preparation and Properties of Antiflashover Coating with High-Hydrophobic Silicone Rubber

作　　者：赵悦菊[1,2] 王国刚[1,2] 夏兵[1,2] 王建辉[1,2] 张金玲[1,2] 

机构地区：[1]国网电力科学研究院 [2]北京国电富通科技发展有限责任公司,北京100070

出　　处：《有机硅材料》2012年第4期237-241,共5页Silicone Material

基　　金：国家自然科学基金(51007083)

摘　　要：以端羟基聚二甲基硅氧烷、不同粒径的改性二氧化硅粒子、硅烷偶联剂及助剂为原料,采用有机-无机杂化纳米技术,制得具有高疏水性能的室温硫化(RTV)硅橡胶防污闪涂料。采用扫描电镜表征了涂层的表面形貌,用静态接触角测试仪测定了二氧化硅用量对涂层的憎水性及憎水迁移性变化。结果表明,固定纳米级二氧化硅的用量,当微米级二氧化硅用量为10份时,涂层表面形成一定的微米二级粗糙结构,涂层表面接触角为131.50,具有较高的疏水性能;同时,涂层也具有优良的憎水迁移性。此时,硅橡胶的拉伸强度为2.08 MPa,伸长率581%,撕裂强度5.65 kN/m,体积电阻率1.38×1015Ω·m,污秽湿工频闪络电压3 kV,阻燃性FV-0级。A new room temperature vulcanized （RTV） antiflashover coating with high hydrophobic surface was prepared with hydroxyl-terminated polydimethylsiloxane, nano-micro silica with deferent diameters, silane coupling agent and other additives via an organic/inorganic hybrid technology by. The results of the morphology of RTV coating by scanning electron microscope （ SEM）, the hydrophobicity property and hydrophobicity transfer property of RTV coating by static contact angle instrument showed that the coating film ex- hibited excellent hydrophobic property with a water static contact angle of 13l. 5~ at a loadings of 10 parts of silica nano-micro particles, due to the formation of nano-micro binary structure. The other properties, such as hydrophobic-migration properties were also investigated. The tensile strength of silicone rubber was 2.08 MPa, elongation was 581%, tear strength was 5.65% kN/m, volume resistivity was 1.38×10^15Ω·m and the pollution flashover voltage was 3 kV.

关 键 词：高疏水性 硅橡胶 污秽闪络 表面微-纳结构 

分 类 号：TQ637[化学工程—精细化工]