紫外臭氧辐照及NVP接枝改善SR表面湿滑性能  

Improvement of wettability of SR via UV-Ozone radiation and NVP grafting

作　　者：贵大勇[1] 梁霜[1] 赵海娟[1] 马文杰[1] 吴奕光[1] 

机构地区：[1]深圳大学化学与化工学院,深圳518060

出　　处：《深圳大学学报（理工版）》2014年第6期576-582,共7页Journal of Shenzhen University(Science and Engineering)

基　　金：国家重点基础研究发展规划资助项目(2011CB605603);深圳市基础研究资助项目(JCYJ20120613110532389)~~

摘　　要：利用紫外-臭氧(UV-Ozone)活化硅橡胶(silicone rubber,SR)表面后,通过偶联法接枝N-乙烯基吡咯烷酮(N-vinylpyrrolidone,NVP),对SR表面进行亲水性改性,以提高硅橡胶表面的湿滑性能.采用傅里叶衰减全反射谱(attenuated total reflection flourier transformed infrared spectroscopy,FTIR-ATR)、扫描电镜和能量色散X射线谱分析(scanning electron microscopy-energy dispersive X-ray spectroscopy,SEMEDS)以及表面静态水接触角等手段,对改性硅橡胶表面进行了分析表征.结果表明,当辐射时间为60min时,硅橡胶表面形成了大量Si—O键和—OH,达到了较好的辐射效果;接枝N-乙烯基吡咯烷酮(NVP)的硅橡胶表面亲水性较好,表面接触角达到50°,在室温空气中亲水性能够保持2周左右.The surface of silicone rubber（ SR） was activated by UV-Ozone,and N-vinylpyrrolidone（ NVP） was then grafted on the surface of SR through γ-methacryloxy propyl trimethoxy silane（ KH-570） as a coupling agent to improve the surface wettability. The modification of SR surface was characterized by contact angle goniometry,attenuated total reflectance infrared spectroscopy,and scanning electron microscopy-energy dispersive X-ray analysis. The results show that the modification of silicone rubber under UV-Ozone radiation of 60 min forms a lot of Si—O bonds and —OH groups on the surface,which exhibits good irradiation effects on silicone rubber. After coupled with KH-570 as a reactive bridge,followed by grafting N-vinylpyrrolidone（ NVP）,the surface of silicone rubber reaches the excellent wettability with contact angle of 50°,which can keep for 2 weeks or so under atmosphere at ambient temperature.

关 键 词：有机高分子材料 硅橡胶 亲水性改性 紫外臭氧处理 辐照 硅烷偶联剂 N-乙烯基吡咯烷酮 

分 类 号：TQ330.7[化学工程—橡胶工业] O634.4[理学—高分子化学]