基于甲基三甲氧基硅烷/正硅酸乙酯的聚碳酸酯耐磨涂层  

Abrasion Resistance Coatings Prepared from Methyltrimethoxysilane and Tetraethoxysilane on Polycarbonate Substrates

作　　者：陈宇宏[1,2] 柳沥翔[1] 詹茂盛[1] 周克斌[2] 

机构地区：[1]北京航空航天大学材料科学与工程学院空天材料与服役教育部重点实验室,北京100191 [2]北京航空材料研究院,北京100095

出　　处：《航空材料学报》2012年第2期43-48,共6页Journal of Aeronautical Materials

基　　金：国家高技术研究发展计划(863)项目(2007AA03Z534)

摘　　要：以甲基三甲氧基硅烷(MTMS)水解聚合产物作为主要成膜物质,引入正硅酸乙酯(TEOS)水解产物硅溶胶作为无机增强物,采用溶胶凝胶法在聚碳酸酯(PC)表面形成耐磨涂层。结果表明:PC表面形成了Si—O—Si的交联网络结构。通过测试耐磨实验前后光学性能的变化研究表面涂覆涂层的聚碳酸酯的耐磨性能与涂层组分之间的关系。当涂层原料MTMS和TEOS的摩尔比为2∶1时,聚碳酸酯的耐磨性能达到最优,500次摩擦后雾度为13.22%,为纯PC的56.21%。The abrasion resistance coatings prepared through the sol-gel process with MTMS as the film forming material and tetraethylorthosilane（TEOS） as the inorganic reinforcing component were applied on the bisphenol-A polycarbonate.It is demonstrated that the cross linked network structure of Si—O—Si is formed at the surface of PC.The relationship between abrasion resistance and component content of the coating were investigated by comparing the optical performance before and after the abrasion test.The result shows that PC coated with the MTES/TEOS possesses much better abrasion resistance than uncoated PC.When the component of the coating is MTMS∶ TEOS=2∶ 1,the coating exhibits the best abrasion properties.The haze of PC coated with the optimal coating is only 13.22% after 500 times abrasion,while that of uncoated PC is rised up to 56.21%.

关 键 词：甲基三甲氧基硅烷 正硅酸乙酯 耐磨 涂层 

分 类 号：TQ630.6[化学工程—精细化工]