空气等离子预处理改善橡胶表面碳膜结合强度和耐磨性研究

白常宁; 强力; 唐宏亮; 张斌; 张俊彦

doi:10.3969/j.issn.1006-7086.2019.05.007

空气等离子预处理改善橡胶表面碳膜结合强度和耐磨性研究

Improving the Adhesion and Wear Resistance of Amorphous Carbon Films on Rubber Substrate by Air Plasma Pretreatment

摘要

摘要: 为增强橡胶在动密封环境服役的耐磨性，采用等离子体增强化学气相沉积技术在丁腈橡胶表面制备非晶碳膜。利用高分辨透射电子显微镜（HRTEM）、显微共焦拉曼光谱仪、扫描电子显微镜（SEM）、傅里叶变换红外光谱仪（FTIR）、划痕测试仪、球盘摩擦磨损试验机等表征空气等离子体预处理偏压对薄膜结构、膜基结合力和摩擦学性能的影响。结果表明：随空气等离子体预处理偏压升高，薄膜趋于石墨化。预处理偏压为-900 V时，薄膜/橡胶呈现最优的膜基结合力（46 N）和摩擦性能（平均摩擦系数0.24），比原始橡胶的摩擦系数降低了70%，摩擦曲线稳定、耐磨性较强。说明空气等离子体预处理能够提高膜基结合强度，有效增强橡胶的耐磨性。

Abstract: To enhance the wear resistance of rubber in dynamic sealing environment,the plasma enhanced chemical vapor deposition technique is used to deposit amorphous carbon films on the surface of nitrile rubber.The film structure,adhesion and friction properties of films/rubber was evaluated with High Resolution Transmission Electron Microscopy(HRTEM),Microscopic Confocal Raman Spectroscopy,Scanning Electron Microscopy(SEM),Fourier Transform Infrared Spectrometer(FTIR),Scratch Tester,Spherical Disc Friction and Wear Tester,respectively.The results showed that the film tended to be graphitized as the pretreatment bias of the air plasma increased.The film with a pretreatment bias of-900 V exhibited the best adhesion(46 N) and friction properties(average friction coefficient 0.24).The friction coefficient was decreased by 70%compared with that of the original rubber and the friction curve was steady.It was indicated that the air plasma pretreatment could effectively improve the adhesion of the film on rubber,and enhance the wear resistance of the rubber.

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