Xin Wang, Tao Wang, Jie Sheng, Ziting Wang, Weizhi Yang, Meng Li, Liping Shi
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引用次数: 0
摘要
超疏水表面因其优异的特性引起了人们越来越多的关注,但如何便捷地制备出具有良好机械稳定性的超疏水表面仍是一项具有挑战性的工作。本文采用简单的砂纸打磨法,将聚四氟乙烯粉末直接打磨到聚对苯二甲酸乙二醇酯(PET)薄膜表面,制备出了超疏水表面。首先利用响应面方法对制造参数进行了优化。利用扫描电镜、傅立叶变换红外光谱和 XPS 对制备表面的形貌和化学成分进行了表征。通过胶带剥离测试评估了超疏水 PET 表面的机械性能,并最终确定了该表面在自清洁和防结冰方面的潜在应用。结果表明,在最佳条件下,PET 表面的水接触角(WCA)可达 153.5°,滑动角(SA)小于 ~3°,其表面超疏水性归因于低表面能和表面粗糙度的协同作用。制备的超疏水表面还表现出良好的耐磨性,在自清洁和防结冰领域具有巨大的应用潜力。
Preparation of robust superhydrophobic surface on PET substrate using Box-Behnken design and facile sanding method with PTFE powder
Superhydrophobic surfaces have attracted increasing interests due to their excellent features, while achieving facile preparation of superhydrophobic surface with good mechanical stability is still a challenging work. In this paper, we prepared a superhydrophobic surface by sanding polytetrafluoroethylene powder directly onto the surface of a polyethylene terephthalate (PET) film by means of a simple sanding method with sandpaper. The fabrication parameters were firstly optimized using response surface methodology. Surface morphology and chemical composition of the fabricated surface were characterized by SEM, FTIR and XPS. The mechanical performance of the superhydrophobic PET surfaces was evaluated by tape peeling test, and potential applications of this surface in self-cleaning and anti-icing were finally carried out. The results showed that the water contact angle (WCA) up to 153.5° and sliding angle (SA) less than ~3° on PET surface could be prepared under the optimum conditions, and its superhydrophobicity of surfaces was attributed to the synergistically effect of low surface energy and surface roughness. The fabricated superhydrophobic surfaces also exhibited good resistance to abrasion, and they have great potential for application in the fields of self-cleaning and anti-icing.
期刊介绍:
Journal of Micromechanics and Microengineering (JMM) primarily covers experimental work, however relevant modelling papers are considered where supported by experimental data.
The journal is focussed on all aspects of:
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-nano- and micro- electomechanical systems
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Including sensors, optical MEMS/NEMS, RF MEMS/NEMS, etc.
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Including bio MEMS, biosensors, assays, organ-on-a-chip, drug delivery, cells, biointerfaces.
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Including power MEMS/NEMS, energy harvesters, actuators, microbatteries.
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