摘要
利用四氟甲烷等离子体对硅橡胶表面进行疏油改性,采用X射线光电子能谱获得样品表面元素组成和化学键信息,用红外光谱分析改性官能团的变化,用静态接触角表征其疏油性,利用几何方程计算硅橡胶表面能,分析讨论了四氟甲烷(CF_4)处理时间对硅橡胶疏油性的影响。结果表明:经过CF_4处理后的硅橡胶表面引入了F—Si—F含氟官能团,随着F—Si—F含量的增加,硅橡胶的表面能降低,硅橡胶表面的疏油性增强,在CF_4处理时间为300 s时,F—Si—F的含量最大,表面能最低,硅橡胶表面的疏油性也达到了最佳。CF_4处理后的硅橡胶对二碘甲烷的接触角比处理前的61.6°提高了100%以上,达到了123.6°。
The oleophobic property of the surface of silicon rubber was modified by CF4 Plasma. The elementary composition and chemical bonds information were detected by X-ray photoelectron spectroscopy. The change of the modified functional group was analyzed by infrared spectroscopy. The oleophobic property was characterized by static contact angle. The surface energy of the silicon rubber was calculated according to the geometric equations, and the influence of the processing time on oleophobic property of silicon rubber surface was discussed. The results showed that the F-Si-F fluorine-containing functional groups were introdueed in silicon rubber surface after being processed by CF4 plasma. The surface energy of silicon rubber decreased and the oleophobic property increased with the F-Si-F fluorine-containing functional groups increasing. When the processing time was 300 seconds, the content of F-Si-F functional groups reached the maximum, the surface energy decreased to the minimum and the oleophobic property of silicone rubber surface reached the best. After being treated, the contact angle was improved more than 100% from 61.6° to 123.6°.
出处
《新乡学院学报》
2017年第9期13-15,共3页
Journal of Xinxiang University
基金
福建省自然科学基金项目(2017J01714)
福建省教育科研基金资助项目(JAT160462)
三明学院科研基金资助项目(B201611)
关键词
硅橡胶
表面能
蔬油性能
四氟甲烷等离子体
X射线光电子能
silicone rubber
surface energy
oleophobic property
CF4 plasma
X-ray photoelectron spectroscopy
