水性醇酸树脂/中空TiO_(2)微球复合涂层的性能  

Properties of Water-borne Alkyd Resin/Hollow TiO_(2) Microsphere Composite Coating

作　　者：鲍艳 丁颖[1,2] 唐培 康巧玲 BAO Yan;DING Ying;TANG Pei;KANG Qiaoling(College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science and Technology,Xi'an 710021,China;National Demonstration Center for Experimental Light Chemistry Engineering Education,Shaanxi University of Science and Technology,Xi'an 710021,China)

机构地区：[1]陕西科技大学轻工科学与工程学院,西安710021 [2]轻化工程国家级实验教学示范中心(陕西科技大学),西安710021

出　　处：《材料导报》2021年第18期18200-18204,18221,共6页Materials Reports

基　　金：国家自然科学基金(21878181);陕西省重点研发计划(2018ZDXM-GY-118)。

摘　　要：以豆油酸、三羟甲基丙烷、邻苯二甲酸酐和偏苯三酸酐为原料制备水性醇酸树脂,通过物理共混法将中空TiO_(2)微球引入水性醇酸树脂中,研究中空TiO_(2)微球粒径对水性醇酸树脂涂层水接触角、耐盐水性、电化学性能、附着力及铅笔硬度的影响。结果表明:中空TiO_(2)微球粒径对水性醇酸树脂涂层的性能具有重要影响。当中空TiO_(2)微球粒径为200 nm时,所制备的水性醇酸树脂/中空TiO_(2)微球复合涂层的水接触角为106°,耐盐水性能达120 h以上,电化学阻抗较纯水性醇酸树脂涂层提高近两个数量级,具有优异的防腐性能,且复合涂层附着力为0级,铅笔硬度可达5H。Water-borne alkyd resin was prepared using soybean oleic acid,trimethyl-propane,phthalic anhydride and trimellitic anhydride as raw mate-rials.Hollow TiO_(2)microspheres with different particle sizes were introduced into water-borne alkyd resin by physical blending method to obtain water-borne alkyd resin/hollow TiO_(2)microspheres composite coating.The effects of particle size of hollow TiO_(2)microspheres on water contact angle,salt water resistance,electrochemical properties,adhesion and pencil hardness of water-borne alkyd resin coating were investigated.The results showed that the particle size of hollow TiO_(2)microspheres was played a vital role for the properties of water-borne alkyd resin coa-ting.When the particle size of hollow TiO_(2)microspheres was 200 nm,the water contact angle of the composite coating reached 106°,and its salt water resistance reached more than 120 h.Compared with the coating of water-borne alkyd resin,the electrochemical impedance of the composite coating was improved two orders,which exhibited prominent anti-corrosion performance.Moreover,the adhesion and pencil hardness of the composite coating was grade 0 and 5H,respectively.

关 键 词：水性醇酸树脂 中空TiO_(2)微球 电化学性能 耐盐水性能 

分 类 号：TQ323[化学工程—合成树脂塑料工业]