外墙乳胶漆配方设计中透水性能的提升策略  

Strategy of Improving Water Permeability in Exterior Latex Coatings Formula Design

作　　者：管洲 潘秀伟 郑晗祯 王燕 GUAN Zhou;PAN Xiu-wei;ZHENG Han-zhen;WANG Yan(Caparol(China)Ltd.,Shanghai 200233,China)

机构地区：[1]德爱威(中国)有限公司,上海200233

出　　处：《中国涂料》2022年第11期43-51,共9页China Coatings

摘　　要：研究了成膜体系、助剂体系和无机填料对乳胶漆透水性能的影响。结果表明:成膜体系方面,使用小粒径乳胶,提高乳胶用量并搭配少量的蜡乳液、提高成膜助剂用量可有助于改善涂层的成膜效果,进而改善透水性;助剂方面,使用铵盐分散剂替代钠盐分散剂、使用更低HLB值的润湿剂、使用疏水改性聚氨酯增稠剂替代碱溶胀增稠剂,并加入少量的遮盖聚合物,均有助于改善透水性;无机填料方面,使用粗细搭配的填料体系,并尽可能使用片状填料,也可一定程度改善透水性。根据实验结论和总结的涂膜透水及改进模型,可为乳胶漆透水性能的提升给出配方优化建议,并验证了改良后的配方能够有效降低涂膜的透水量,使其达到外墙面漆合格品的指标,可为低成本、低透水的外墙乳胶漆配方设计提供思路。The effects of film-forming systems,additives and inorganic fillers on the water permeability of exterior latex coatings were studied.It was found that,as for the film-forming system,using smaller particle-sized latex,increasing the latex and coalescent dosage,and introducing wax into the formula would benefit the film-forming performance.The water permeability can be improved.In terms of additives,using ammonia dispersant instead of sodium dispersant,wetting agent with lower HLB value,HEUR instead of ASE thickener,and including opaque polymer has positive effect to water permeability.In terms of additives inorganic fillers,water permeability could be improved by using fillers with wide particle size distribution,and including lamellar-shaped fillers.According to the experiment results and established water permeability and improvement model,this paper provides formula optimization suggestions for improvement of the water permeability of latex coatings.In addition,it is verified that the modified formula can exhibit lower water permeability,meeting the indicators of qualified exterior latex coatings.The paper can provide ideas for formula design of economic and low water permeability exterior latex coatings.

关 键 词：外墙 乳胶漆 透水性能 配方设计 

分 类 号：TQ630.71[化学工程—精细化工]