氟硅树脂基超疏水涂层的组成设计及性能评价  

Composition Design and Performance Assessment of Superhydrophobic Coating Based on Fluorine-Silicone Resin

作　　者：李权威 刘乐乐 赵丕琪[1] 于有良 邵明军 芦令超[1] LI Quanwei;LIU Lele;ZHAO Piqi;YU Youliang;SHAO Mingjun;LU Lingchao(Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials,University of Jinan,Jinan 250022,China;China Testing&Certification International Group Xi’an Co.,Ltd.,Xi’an 710061,China;Haihui Group Co.,Ltd.,Rizhao 276500,Shandong,China)

机构地区：[1]济南大学山东省建筑材料制备与测试技术重点实验室,济南250022 [2]中国国检测试控股集团西安有限公司,西安710061 [3]海汇集团,山东日照276500

出　　处：《材料导报》2023年第9期238-244,共7页Materials Reports

基　　金：国家重点研发计划(2018YFD1101003-06);国家自然科学基金(U1806222,52172021);山东省自然科学基金(ZR2021ME123)。

摘　　要：超疏水涂层具有优异的防水性、自清洁性、防腐蚀性能等优点,一直是国内外的研究热点,但如何简单高效地制备高稳定性的超疏水涂层仍是一个挑战。本工作以乙酸乙酯为溶剂介质,按既定工艺将氟硅(F-Si)树脂、气相二氧化硅(Hy-SiO_(2))、KH-550均匀分散以提高其相互匹配效果。通过正交试验,以涂层表面水接触角(WCA)、滚动角(RA)以及接触角摩擦损失率(FL)为参数确定了涂层的最佳配比,并在此基础上对超疏水涂层在不同基底上的作用效果及其耐沾污性、热稳定性、耐湿性进行了研究。结果表明,当F-Si树脂、Hy-SiO_(2)、乙酸乙酯的质量比为1∶0.2∶15时,涂层的WCA高达154.3°,RA为1.7°,FL为8.8%,具有优异的超疏水性能和稳定性。不同基材类型对涂层的超疏水性有很大的影响,但在水泥基底上性能最优,并通过SEM分析发现,水泥基底表面具有微米级粗糙度,与超疏水涂层中的纳米粒子共同构筑形成了超疏水表面的两个必要条件之一的微-纳米粗糙结构。涂层在300℃下加热1 h后在相对湿度40%下放置6 d仍具有超疏水效果和较优的耐沾污、耐热性能。The superhydrophobic coating has attracted increasing attention due to excellent water resistance,self-cleaning and corrosion resistance.However,the simple and efficient preparation method of superhydrophobic coating with high stability is a major challenge.In this study,fluorine-silicone(F-Si) resin,hydrophobic fumed silica(Hy-SiO_2) and KH-550 were uniformly dispersed according to the established process using ethyl acetate as solvent medium to improve their matching effect.The optimum ratio of superhydrophobic coatings was determined by an orthogonal test with water contact angle(WCA),rolling angle(RA) and friction loss rate(FL) as parameters.On this basis,the effect of superhydrophobic coatings on different substrates,its stain resistance,thermal stability and moisture resistance were studied.The results show that the coating has a WCA of 154.3°,RA of 1.7°,FL of 8.8%,and excellent stability when m(F-Si resin)∶m(Hy-SiO_2)∶m(ethyl acetate)=1∶0.2∶15.Different substrate types have great influence on the superhydrophobicity of the coating,but the performance was the best on the cement substrate.Through SEM analysis,it is found that the surface of the cement substrate has micron-level roughness,which co-constructs with the nano-particles in the superhydrophobic coating,forming the micro-nano-rough structure of the superhydrophobic surface.In addition,the coating still has the superhydrophobicity,better stain resistance and heat resistance after being heated at 300 ℃ for 1 h and placed at 40% relative humidity for 6 d.

关 键 词：超疏水 水接触角 氟硅树脂 疏水气相二氧化硅 正交实验设计 

分 类 号：TQ638[化学工程—精细化工]