摘要
通过等离子体连续处理仪对疏水性材料表面进行表面改性而提高了其润湿性。研究了不同反应条件对高分子材料表面改性的影响;通过测定样品表面的接触角等性能评价了其表面亲水性的变化。经过等离子体表面处理,聚四氟乙烯的接触角有了显著下降;聚乙烯电池隔膜的吸碱率为自身重量的3.5倍,爬高率初始3 min接近100 mm;硅橡胶的接触角由105°下降到30°;聚酯的接触角由98°到15°。通过对材料表面进行丙烯酸接枝,评价了时效性的影响;初步探讨了真空紫外辐射对表面改性的影响。结果表明:改性后疏水性材料表面的润湿性得到了明显改善,该技术与设备在工业应用方面非常具有推广价值。
The surfaces of various hydrophobic polymer materials were modified by continuous plasma immersion to improve their wettabilities.The impacts of the surface modification conditions,including the immersion time,power,gas types and pressure,on surface morphologies and properties were evaluated.The microstructures were characterized with scanning electron microscopy.The results show that the plasma immersion significantly improves the wettability of the hydrophobic polymer materials.For example,the contact angle of teflon decreased sharply.The polyethylene membrane absorbed alkali solution 3.5 times of its weight,and in 3 min the liquid rose up to 100 mm.The surface modification reduced the contact angle of silicone rubber from 105° to 30°,and that of polyester from 98° to 15°.
出处
《真空科学与技术学报》
EI
CAS
CSCD
北大核心
2011年第6期705-709,共5页
Chinese Journal of Vacuum Science and Technology
基金
常州市应用基础研究计划项目(No.CJ20110004)
关键词
等离子体
疏水性材料
表面改性
润湿性
Plasma
Hydrophobic materials
Surface modification
Wettability
