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将改性纳米SiO2与聚丙烯酸酯乳液经过球磨,流涎或涂刷制膜可得到抗静电复合膜。TEM照片显示改性纳米SiO2为球形,粒径20nm,以几个颗粒的聚集体为独立基团均匀分散,团聚体在尺寸<100nm。改性纳米SiO2/聚丙烯酸酯复合膜制备与性能研究表明当纳米SiO2与聚丙烯酸酯树脂质量分数22%时,复合膜的表面电阻率可达到108Ω/cm,复合膜为半透明膜;复合膜表面具有一定的亲水性,烘干后,放在20～30℃、湿度60%～80%的空气中2～4h后,复合膜表面电阻率降低到106Ω/cm。
The modified nano-SiO2 and polyacrylate emulsion after ball milling, drooling or brushing film obtained anti-static composite membrane. The TEM images show that the modified nano-SiO2 is spherical and has a particle size of 20 nm. The nano-SiO2 is uniformly dispersed as an independent group of aggregates of several particles, and the size of the aggregates is less than 100 nm. Preparation and properties of modified nano-SiO2 / polyacrylate composite membranes showed that the surface resistivity of the composite membrane can reach 108Ω / cm and the composite membrane is a semi-transparent membrane when the mass fraction of nano-SiO2 and polyacrylate resin is 22% Surface has a certain hydrophilicity, after drying, placed in 20 ~ 30 ℃, humidity 60% ~ 80% of the air 2 ~ 4h, the composite film surface resistivity decreased to 106Ω / cm.