Fabrication and anti-frosting performance of super hydrophobic coating based on modified nano-sized calcium carbonate and ordinary polyacrylate
Fabrication and anti-frosting performance of super hydrophobic coating based on modified nano-sized calcium carbonate and ordinary polyacrylate
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DOI：
10.1016/j.apsusc.2007.04.006
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发表时间：
2007-09-15
影响因子：
6.7
通讯作者：
Qiu, Yipeng
中科院分区：
文献类型：
--
作者：
Wang, Hao;Tang, Liming;Qiu, Yipeng
采用十六氟癸基三甲氧基硅烷在酸性水条件下对纳米碳酸钙（CaCO3）进行了改性。以甲基丙烯酸甲酯、丙烯酸丁酯、丙烯酸和对甲基丙烯酸羟乙酯为粘合剂，用改性CaCO3形成疏水涂料。以CaCO3与聚丙烯酸酯的质量比为8/2，用简单的方法制备了水接触角为155度的超疏水涂层。基于扫描电子显微镜（SEM）和x射线光电子能谱（XPS）的表面分析，超疏水性可以归因于氟烷基链的表面微观结构和表面富集。超疏水表面的炭黑粉末由于水滑动角小，极易被水滴滚动去除。此外，对不同表面的防霜性能进行了研究，结果表明，与裸铜表面相比，超疏水表面的结霜速度大大延迟。经10次冻融处理后，其表面仍保持超疏水性。(c) 2007 Elsevier B.V.版权所有
Nano-sized calcium carbonate (CaCO3) particles were modified by heptadecafluorodecyl trimethoxysilane under acidic water condition. An ordinary polyacrylate prepared via radical copolymerization of methyl methacrylate, butyl acrylate, acrylic acid and P-hydroxyethyl methacrylate was used as the binder to form hydrophobic coatings with the modified CaCO3. Super hydrophobic coating with water contact angle of 155 degrees was obtained from modified CaCO3 and the polyacrylate at their weight ratio of 8/2 by a simple procedure. Based on surface analysis by scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS), the super hydrophobicity can be attributed to both the surface microstructure and surface enrichment of fluoroalkyl chains. Due to a low water sliding angle, carbon black powder on super hydrophobic surface was easily removed by rolling water droplet. Furthermore, the anti-frosting performance of different surfaces was investigated, which indicated that the frost formed on superhydrophobic surface was greatly retarded compared with that on bare copper surface. The surface kept super hydrophobicity even after freezing-thawing treatment for 10 times. (c) 2007 Elsevier B.V. All rights reserved.