摘要
采用模拟雾霾环境污染处理实验样品,研究了以α,ω-二羟基聚二甲基硅氧烷(107硅橡胶)为基胶的硅橡胶防污闪涂层的表干时间和憎水迁移性变化规律。研究发现,同时以高、低摩尔质量的107硅橡胶混合物为基胶的防污闪涂层的表干时间比单纯以其中一种107硅橡胶为基胶的防污闪涂层的表干时间短。调整高、低摩尔质量107硅橡胶的混合比例得到的防污闪涂层的憎水迁移性效果较好,相对于单一基胶配制的防污闪涂层更优。当摩尔质量为50 000 g/mol及4 000 g/mol的107硅橡胶的质量比为4∶1时,防污闪涂层的憎水迁移性最好。添加氧化铝可以增加防污闪涂层的憎水性和憎水迁移性,当氧化铝用量为10%时效果最好;白炭黑过多添加会影响防污闪涂层的憎水性和憎水迁移性,但在一定的范围内影响不大。白炭黑的用量为5%时防污闪涂层的憎水性以及憎水迁移性最好。
Experimental samples were polluted by the circumstance of haze simulation.The effect ofα,ω-dihydroxy polydimethylsiloxane （107 silicone rubber） with different chemical constituents on surface drying time and hydrophobicity transference of RTV anti-fouling flashover silicone coatings was investigated.Results show that the tack-free time of anti-fouling flashover coatings with 107 silicone rubber of high and low molar mass as the base rubber is shorter than those with only one as base rubber.Adjusting the mixing proportion of 107 sili-cone rubber of high and low molar mass in silicone coatings can improve its hydrophobicity transference, better than that with one base rubber.When the mass ratio of the 107 rubber with a molar mass of 50 000 g/mol and 4 000 g/mol is 4：1, the hydrophobicity of the coatings is the best.Alumina will improve the hydrophobicity and hydrophobic migration of the anti-fouling flashover coatings, especially when alumina is 10%.Excessive fumed silica will affect the hydrophobicity and hydrophobic migration of the coatings.When the fumed silica is 5%, the hydrophobicity and hydrophobic migration of the anti-fouling flashover coatings are the best.
出处
《有机硅材料》
CAS
2015年第2期79-83,共5页
Silicone Material
基金
国家自然科学基金(51007083)
国网河南省电力公司电力科学研究院科研基金(521700140004)
关键词
防污闪
RTV涂料
憎水迁移性
107硅橡胶
表干时间
antifouling flashover
RTV coatings
hydrophobicity transference
107 silicone rubber
tack-free time
