摘要
为防止高压输电线路绝缘子污闪事故的发生,本文以纳米TiO_2和聚四氟乙烯(PTFE)微粉的复合填料与水性氟碳树脂制备了一种的表面具有自清洁效应的纳米TiO_2/PTFE复合氟碳防污闪涂层材料。通过优化配方及一系列制备工艺试验,确定了纳米TiO_2和PTFE的添加量及配比。采用扫描电镜(SEM)、X射线光电子能谱仪(XPS)及接触角测量仪对涂层表面的微观结构及疏水性进行了分析表征。结果表明,当纳米TiO_2质量百分比添加量为6%,PTFE质量百分比添加量为16%时,TiO_2/PTFE复合氟碳防污闪涂层材料对水静态接触角达到124°,涂层表面具有微/纳二元粗糙结构,有优良的表面疏水性。通过对涂层的理化电气性能测试表明,涂层具有优异的理化电气性能,其附着力、硬度、耐水性、耐酸碱性、体积电阻率等各项指标均达到国家标准。
In order to prevent high-voltage transmission line from insulator flashover accident,a nanoTiO2/PTFE composite fluorocarbon antifouling flash coating material was prepared with nano-TiO2 and polytetrafluoroethylene（PTFE）powder as composite fillers and waterborne fluorocarbon resin to give selfcleaning ability.Optimum composition and ratio of nano-TiO2 and PTFE were obtained by optimizing the design of experiments and formulations.Coating surface microstructure and hydrophobic property were characterized by scanning electron microscope（SEM）,X-ray photoelectron spectrometer（XPS）and contact angel measurement instrument.Results show that the contact angle of static water on the TiO2/PTFE composite fluorocarbon antifouling flash coating is 124°,and the surface of coating has a micro/nano binary coarse structure,which with an excellent surface hydrophobicity,when the composition of nano-TiO2 and PTFE is 6 wt.% and 16 wt.%,respectively.The experiments and tests also display the materials have an excellent physicochemical and electrical performance.Indicators,such as adhesion,hardness,water resistance,acid alkali resistance and volume resistivity are satisfied the national standard.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2017年第1期101-104,148,共5页
Journal of Materials Science and Engineering
基金
国家自然科学基金资助项目(21171027)
湖南省科技厅科技计划重点资助项目(2013GK2006)
