摘要
Although some progress in plasma modification of the polytetrafluoroethylene(PTFE) surface has been made recently,its adhesion strength still needs to be further improved.In this work,the surface of a PTFE sample was treated with a two-step in-situ method.Firstly,the PTFE surface was treated with capacitively coupled Ar plasma to improve its mechanical interlocking performance;then,Ar+NH_(3)+CH_(4) plasma was used to deposit an a-CNx:H cross-linking layer on the PTFE surface to improve the molecular bonding ability.After treatment,a high specific surface area of 2.20 and a low F/C ratio of 0.32 were achieved on the PTFE surface.Its surface free energy was increased significantly and its maximum adhesion strength reached77.1 N·10 mm^(-1),which is 56% higher than that of the single-step Ar plasma-treated sample and32% higher than that of the single-step Ar+CH_(4)+NH_(3) plasma-treated sample.
作者
卢曼婷
何弈
刘学
黄嘉敏
张佳伟
马晓萍
辛煜
Manting LU;Yi HE;Xue LIU;Jiamin HUANG;Jiawei ZHANG;Xiaoping MA;Yu XIN(Jiangsu Key Laboratory of Thin Films,School of Physical Science and Technology,Soochow University.Suzhou 215006,People's Republic of China)
