六钛酸钾晶须基隔热卷材涂料的制备与性能-高校化学工程学报.PDF

第25 卷第1 期 高 校 化 学 工 程 学 报 No.1 Vol.25 2011 年 2 月 Journal of Chemical Engineering of Chinese Universities Feb. 2011 文章编号：1003-9015(2011)01-0114-05 六钛酸钾晶须基隔热卷材涂料的制备与性能 徐梦漪, 王 鹏, 皮丕辉, 文秀芳, 蔡智奇, 程 江, 杨卓如 (华南理工大学 化学与化工学院, 广州 广东 510641) 摘 要：用硅烷偶联剂对六钛酸钾晶须进行表面处理，再加入到饱和聚酯卷材涂料中以期得到隔热性能优良的隔热卷 材涂料。考察了硅烷偶联剂用量、水解条件及六钛酸钾晶须用量对卷材涂料隔热性能的影响。采用 SEM 分析对涂膜表 面六钛酸钾晶须分散状态进行了分析表征。结果表明，硅烷偶联剂表面处理能够实现六钛酸钾晶须在涂膜中的均匀分 散，最优的处理工艺为：硅烷偶联剂水解液 pH 值为 1.5，硅烷偶联剂用量为晶须用量的 5%(wt) 。综合卷材涂料的隔热 性能和机械性能，得出六钛酸钾晶须的最优添加量为 1.5%(wt)。六钛酸钾晶须的加入将卷材涂料的热反射率从 41.0% 提高到 68.9%，达到良好隔热效果，此时涂层机械性能达到预涂金属卷材使用要求。 关键词：隔热；卷材涂料；六钛酸钾晶须；硅烷偶联剂 中图分类号：TQ630.7 文献标识码：A Preparation and Properties of Potassium Hexatitanate Whisker Based Thermal Insulation Coil Coatings XU Meng-yi, WANG Peng, PI Pi-hui, WEN Xiu-fang, CAI Zhi-qi, CHENG Jiang, YANG Zhuo-ru (School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China) Abstract: The surfaces of potassium hexatitanate whiskers (PTW) were modified with silane coupling agent (KH570), and the thermal insulation coil coating were prepared through adding modified PTW into saturated polyester resin system with hexamethoxymethyl melamine type resin as curing agent. The effects of the silane coupling agent dosage, the hydrolysis conditions of the silane coupling agent and the content of PTW in coatings on the thermal insulation performance of coil coating were investigated. At the same time, the scanning electron microscopy (SEM) was used to characterize the dispersion of PTW in coatings. The analysis results show that the silane coupling agent is effective for well dispersion of PTW in coil