摘要
以大豆油基光固化水性聚氨酯,钛酸正丁酯,异丙醇等为原料,通过溶胶-凝胶法制备了大豆油基光固化水性聚氨酯/TiO_2有机无机杂化涂层,并在不同温度下对光固化的杂化涂层进行加热处理。采用XRD表征了所制备涂层的晶体结构,并通过监测"紫外光照-避光"循环中接触角的变化,研究了杂化涂层的光催化活性。结果表明:经120℃加热处理后,杂化涂层具有良好的光催化活性,在"紫外光照-避光"循环中接触角呈现周期性的变化,说明杂化涂层中形成了锐钛型TiO_2结构;无机相的引入提高了涂层的热稳定性,最大残碳量提高到18.8%。
In this paper,a series of soy bean oil based UV curable waterborne polyurethane/TiO_2 hybrid coating were prepared via solgel method,and the hybrid coating was heated at different temperatures.The structure of the coating was characterized by XRD,and the photocatalytic performance of hybridized coatings was studied by monitoring the change of contact angle under the irradiation of UV light,and the photocatalytic performance was studied by heating treatment.The results showed that the hybrid coating had perfect photocatalytic activity after heat treatment under 120℃.The water contact angle showed repeatedly decreasing tendency with UV light irradiation and then increasing tendency under dark.Moreover,the thermal stability of the coating was improved with the addition of inorganic phase,and the maximum amount of residual carbon increased to 18.8%.
出处
《南昌航空大学学报（自然科学版）》
CAS
2017年第4期55-60,共6页
Journal of Nanchang Hangkong University(Natural Sciences)
基金
国家自然科学基金(51103069
21564009)
航空科学基金(2016ZF56022)
江西省自然科学基金(20171BAB206019)
留学人员科技活动项目(赣人社函[2016]81号)
关键词
环氧大豆油
紫外光固化
水性聚氨酯
光催化
epoxidized soybean oil
UV curable
waterborne polyurethane
photocatalytic
