生物基水性亚光面漆的后增稠问题研究  

Research on Post-thickening of Bio-based Waterborne Matte Topcoat

作　　者：段晓俊 李彩霞 陈锦江 梁兆生 朱延安 DUAN Xiao-jun;LI Cai-xia;CHEN Jin-jiang;LIANG Zhao-sheng;ZHU Yan-an(BNBM Carpoly Coatings Group Co.,Ltd.,Guangdong Provincial Key Laboratory of Environmentally Friendly Coatings,Jiangmen 529085,Guangdong,China)

机构地区：[1]北新嘉宝莉涂料集团股份有限公司,广东省环境友好涂料重点实验室,广东江门529085

出　　处：《中国涂料》2025年第1期53-59,共7页China Coatings

基　　金：国家重点研发计划“高端功能与智能材料”重点专项(2022YFB3806404)。

摘　　要：分析了消光粉、增稠剂、分散剂的种类和添加比例以及分散剂的添加方式对生物基水性亚光面漆黏度稳定性的影响规律。研究表明,生物基水性亚光白面漆在贮存过程中的后增稠现象比生物基水性亚光清面漆更明显,说明钛白粉和消光粉的协同作用会明显增强后增稠现象,而生物基水性亚光清面漆在贮存过程中多存在黏度先下降再上升的现象。高温贮存会加速其后增稠;消光粉添加比例越高后增稠越明显;采用高剪、中剪和低剪增稠剂配制的生物基水性亚光白面漆一定程度上的后增稠程度依次提高,但有些低剪增稠剂兼顾增稠效率和黏度稳定性的优势。低分子量润湿分散剂的黏度稳定性优于高分子量润湿分散剂,阴离子润湿剂的黏度稳定性优于非离子润湿分散剂。This paper analyzes the viscosity stability of bio-based waterborne matte topcoat affected by the types and addition ratio of matting agent,thickener,dispersant,as well as the adding method of dispersant.The study points out that the post-thickening phenomenon of bio-based waterborne matte white topcoat during the storage process is more obvious than that of bio-based waterborne matte clear topcoat,indicating that the synergistic effect of titanium dioxide and matting agent will significantly enhance the post-thickening.In contrast,bio-based waterborne matte clear topcoats mostly exhibit the phenomenon of a decrease in viscosity first and then increases during the storage process.High-temperature storage will accelerate the postthickening.The higher the addition ratio of the matting agent,the more obvious the post-thickening will be.Bio-based waterborne matte white topcoats prepared with high-shear,mid-shear and low-shear thickeners show a trend of increasing post-thickening to some extent,but some low-shear thickeners have the advantages of both thickening efficiency and viscosity stability.The viscosity stability of low molecular weight wetting dispersants is better than that of high molecular weight wetting dispersants,and the viscosity stability of anionic wetting agents is better than that of non-ionic wetting dispersants.

关 键 词：亚光面漆 消光粉 增稠剂 润湿分散剂 黏度 稳定性 

分 类 号：TQ630.71[化学工程—精细化工]