摘要
人工超疏水表面能否简单、环保、经济地量产对其实际应用有重要影响。本研究以滚压成型的表面含微坑的钢辊为模板,采用简单的热压微模塑-可控剥离工艺制备了聚乙烯超疏水表面,接触角大于150°,滚动角约为5°。扫描电镜观察表明,钢辊表面具有均匀网格状微米级浅坑,以此为模板微模塑制备的聚乙烯超疏水表面布满明显拉长的微米级"山"形结构和亚微米级毛刺结构。本文首次报道了直接应用钢辊制备聚合物超疏水表面,可望结合塑料薄膜流延生产工艺,实现聚合物超疏水薄膜或表面规模化生产。
Simple,environmentally friendly and economical procedure to mass-produce superhydrophobic surfaces has always been pursued.In this study,a novel process,thermal replica-molding followed by controlled peeling using a steel roller as template was developed to fabricate superhydrophobic surfaces of polyethylene（PE）.Briefly,a steel roller was first micro-machined by rolling formation technique.Then a sheet of PE was melted on the roller surface in a vacuum oven.After being cooled to room temperature and peeled off from the roller,the PE superhydrophobic surface with static water contact angle of bigger than 150° and sliding angle of ～5° was produced.Scanning electron microscopy（SEM） images demonstrated that the roller surface exhibited regularly distributed shallow holes while the PE superhydrophobic surfaces had sparse peak-like structures surrounded by dense small spine-like structures.Heights and shapes of these structures on the PE surface showed that they were formed by not only replica-molding but also stretching from the roller surface.Because it adopted the steel roller as the template, it can be combined with the flow-casting process,a main technique for manufacturing plastic films,to produce polymer superhydrophobic films on a large scale.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2010年第6期835-838,906,共5页
Journal of Materials Science and Engineering
基金
浙江省"钱江人才"计划资助项目(2007R10005)
关键词
聚乙烯
超疏水表面
钢辊
热压微模塑
可控剥离
polyethylene
superhydrophobic surface
steel roller
thermal replica-molding
controlled peeling
