低温等离子体处理对航空氟硅橡胶表面性能的影响  

Effect of Low Temperature Plasma Treatment on Surface Properties of Aviation Fluorosilicone Rubber

作　　者：陈玉如[1] 王云英[1] 孟江燕[1] 范金娟[2] 孙旭[1] 

机构地区：[1]南昌航空大学无损检测技术教育部重点实验室材料科学与工程学院,南昌330063 [2]北京航空材料研究院,北京100095

出　　处：《材料工程》2015年第2期73-78,共6页Journal of Materials Engineering

基　　金：中航工业产学研项目(cxy2013CH18)

摘　　要：采用Ar,O2两种气氛对航空氟硅硫化橡胶(FS6265)表面进行低温等离子体(LTP)处理。用X射线光电子能谱(XPS)分析表面元素,测试表征了静态接触角、表面能及剥离强度;用扫描电子显微镜(SEM)及原子力显微镜(AFM)观察了表面形貌及表面粗糙度。结果表明:经Ar处理后,FS6265表面水接触角从101.5°降到19.0°,表面能从19.3mJ·m-2升高至73.2mJ·m-2;经O2处理后,水接触角降到25.5°,表面能升高至70.6mJ·m-2。SEM及AFM图像显示LTP处理后表面粗糙度增加。LTP处理后材料表面C、F元素含量下降,O元素含量大幅度提高,表面引入C—OH和C=O基团。LTP处理效果的时效性非常明显,FS6265经Ar,O2气氛处理后分别放置12,8h后表面性能的变化基本消失。Surface of the aviation vulcanized fluorosilicone（FS6265）rubber was treated by low temperature plasma treatment with Ar and O2 atmospheres.Chemical element of surface of FS6265 was analyzed by means of X-ray photoelectron spectroscopy（XPS）.The static contact angle,surface energy,and the peel strength were used to characterize the condition of FS6265.Surface morphology and surface roughness were observed by scanning electron microscopy（SEM）and atomic force microscopy（AFM）.The results show that the contact angle of FS6265 decreases from 101.5°to 19°,surface energy increases from 19.3mJ·m^-2 to 73.2mJ·m^-2 when it＇s treated by Ar plasma treatment.The water contact angle declines to 25.5°,and the surface energy improves to 70.6mJ·m^-2 after being treated by O2.The images of SEM and AFM show that FS6265 surface roughness increases.XPS shows that the concentration of carbon element and inert fluorine element decreases,oxygen element improves greatly after LTP treatment,double bonded carbon atoms（C=O）and C—OH function groups are found in the surface.In addition,the time effectiveness of plasma treatment is obvious and for FS6265,surface energy change disappear after treated in Ar,O2 atmospheres and then being placed 12 h and 8h.

关 键 词：低温等离子体 氟硅橡胶 表面改性 粘接性 接触角 

分 类 号：TQ333.93[化学工程—橡胶工业]