纳米白炭黑在硅橡胶膜铸膜液中分散性能的研究

Study on the Dispersivity of Nano Carbon-white in Casting Solution of Silicone Rubber Complex Film

制备了以聚对苯二甲酸乙二醇酯(PET)为支撑层,白炭黑填充的聚二甲基硅氧烷(PDMS)为皮层的硅橡胶复合膜,研究了纳米白炭黑在铸膜液中分散性能的影响因素。结果表明,体系中加入适量正硅酸乙酯有助于提高纳米白炭黑的分散性;正庚烷与硅橡胶的配比为10∶1(质量比,下同)时,白炭黑的分散速度最快。对100份PDMS、5份白炭黑复合膜的拉伸强度测试表明,其拉伸强度可达1.828 MPa,相当于未填充白炭黑的硅橡胶膜的5倍。

Using PET as the support, nano carbon-white filled polydimethylsiloxane （PDMS） as the dermic layer, a separation membrane for separating ethanol from water was prepared. The factors affecting the dispersion of nano carbon white in silicone rubber was studied. It was found that an appropriate amount of ES and heptane may improve the dispersion of nano carbon-white. When the 5 wt % of nano carbon-white was introduced, the tensile strength of PDMS film increased from 0. 368 to 1. 828 MPa.