采用高压静电喷涂技术制备超疏水硅橡胶表面的应用研究

发布时间：2018-04-16 10:05

  本文选题：超疏水 + 高压　； 参考：《高电压技术》2015年08期

【摘要】：高压(HV)静电喷涂是1种简单有效的制备超疏水硅橡胶表面(SSRS)的方法,其原理是在静电力的作用下将电喷涂溶液雾化,在接收极固化成型。为此,在实验室中采用高压静电喷涂技术成功制备出超疏水硅橡胶表面,试验中所采用的电喷涂溶液是由AB组分的高温硫化(HTV)液体硅橡胶(LSR)、石油醚、N,N-二甲基甲酰胺(DMF)、纳米二氧化硅(Si O2)颗粒以及十七氟三甲氧基硅烷(FAS-17)组成的复合体系。试验结果表明:石油醚可起到对硅橡胶的稀释作用;DMF可用来提高溶液的极性,使溶液更易于喷涂,得到的喷涂颗粒尺寸减小;Si O2颗粒可用来构筑硅橡胶表面的复合微结构;FAS-17可在硅橡胶表面引入含氟基团、降低表面自由能,同时减小表面微结构尺寸(100 nm~1μm)。经过大量试验验证后提出在电喷涂溶液复合体系中电喷涂制备超疏水硅橡胶表面的最佳条件:石油醚、硅橡胶、DMF、Si O2、FAS-17的质量分数分别为41%、20%、30%、4%、5%。此时制备出的超疏水硅橡胶表面的静态接触角为163.4°,滚动角为4.3°。
[Abstract]:HV HVV electrostatic spraying is a simple and effective method for preparing superhydrophobic silicone rubber surface SSRS. The principle is to atomize the electrospray solution under the action of hydrostatic power and solidify the receiving electrode.Therefore, the surface of superhydrophobic silicone rubber was successfully prepared by high voltage electrostatic spraying in laboratory.The electrospray solution used in the experiment is a composite system consisting of liquid silicone rubber with AB component, high temperature vulcanization (HTV), petroleum ether N (N) -dimethylformamide (DMF), nano-silica (SiO2) particles, and heptadecafluorotrimethoxysilane (FAS-17).The results show that petroleum ether can dilute silicone rubber. DMF can be used to improve the polarity of solution and make the solution easier to spray.The sprayed particles can be used to fabricate the composite microstructure of silicone rubber surface, FAS-17 can introduce fluorine group on the surface of silicone rubber, reduce the surface free energy, and decrease the surface microstructure size of 100 nm~1 / 渭 m.After a lot of tests and verification, the optimum conditions for preparing superhydrophobic silicone rubber surface by electric spraying in electrospray solution composite system are put forward: the mass fraction of petroleum ether, silicone rubber, DMFU, SiO2FAS-17 is 41200.30% and 45%, respectively.The static contact angle and rolling angle of the superhydrophobic silicone rubber are 163.4 掳and 4.3 掳respectively.
【作者单位】： 清华大学电机工程与应用电子技术系电力系统及发电设备控制和仿真国家重点实验室;
【基金】：国家自然科学基金(51102143)~~
【分类号】：TM75;TM216
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本文编号：1758399