摘要
采用气相沉积的方法在铝表面制备了不同碳链长度的全氟羧酸自组装膜。考察了全氟羧酸自组装膜的接触角、膜厚、粘着和微摩擦等表面性质。对相对湿度和温度等环境因素对全氟羧酸自组装膜的纳米摩擦学性能的影响进行了研究。探讨了在环境因素影响下的减摩抗粘着机制。结果表明:自组装膜具有显著的抗粘着效果;随着相对湿度的增加,针尖与样品的粘着力增加,随着温度的增加,针尖与样品粘着力降低,并趋于稳定值;全氟羧酸自组装单层膜能显著降低表面的摩擦力,起到良好的减摩效果,且随烷基链越长,减摩效果越好。
Perfluorinated carboxylic acid with different alkane chain length was formed on aluminum-coated silicon substrate by the chemical vapor deposition（CVD） method.Contact angle,thickness,adhesion and nano-friction properties of these self-assembled monolayers（SAMs） were investigated.The influence of environmental conditions such as relative humidity and temperature on adhesive behavior was studied,and corresponding tribological mechanisms of SAMs were investigated.There results indicate that perfluorinated carboxylic acid SAMs exhibit excellent adhesion resistance.The adhesive force decreases with temperature increasing and then tends to stable value.The SAMs show low friction force,and the SAMs with long alkane chain exhibit lower friction force compared to the short.
出处
《润滑与密封》
CAS
CSCD
北大核心
2007年第11期18-20,23,共4页
Lubrication Engineering
基金
中国科学院"百人计划"资助项目
关键词
自组装膜
全氟羧酸
纳米摩擦学
粘着力
self-assembled monolayers
perfluorinated carboxylic acid
nanotribology
adhesive force
