抗开裂型单组分水性聚氨酯防水涂料的制备及应用  

Preparation and Application of Anti-cracking One-component Waterborne Polyurethane Waterproof Coating

作　　者：刘焕焕 段存业 蒋德明 刘颂 LIU Huanhuan;DUAN Cunye;JIANG Deming;LIU Song(State Key Laboratory of Special Functional Waterproof Materials in Dongfang Yuhong New Material R&D Base,Building Protection and Energy Saving Polyurethane Engineering Technology Center,Beijing 101100,China)

机构地区：[1]东方雨虹新材料研发基地、特种功能防水材料国家重点实验室、建筑防护与节能聚氨酯工程技术中心,北京101100

出　　处：《聚氨酯工业》2023年第5期33-36,共4页Polyurethane Industry

摘　　要：以水性聚氨酯分散体(PUD)为成膜树脂,添加颜填料和多种其他功能助剂,制备了一款抗开裂型单组分水性聚氨酯防水涂料。按照水性聚氨酯防水涂料团标T/CWA 207—2021的方法制备涂膜,并对涂膜进行性能表征。结果表明,当PUD质量分数为45%~60%,在涂料配方中同时引入保湿剂、交联剂和偶联剂,在确保涂膜力学性能不下降的同时,可降低涂膜吸水率,消除单组分水性聚氨酯防水涂料涂膜干燥过程的开裂现象;经工程应用验证,能满足工程施工要求。An anti-cracking one-component waterborne polyurethane waterproof coating was prepared by using waterborne polyurethane dispersion(PUD)as the main raw material and adding fillers and other functional additives.The appearance and properties of the coating were characterized,according to the method of group standard T/CWA 207-2021.The results showed,when the mass fraction of PUD was 45%~60%,the moisturizer,the cross-linking agent and the coupling agent were introduced into the coating formula at the same time,the mechanical properties of the film non-descent were ensured,the water absorption of the film was reduced,the cracking phenomenon during drying of one component waterborne polyurethane waterproof coating would be eliminated.The project application verified with no film cracking,which could meet the requirements of engineering construction.

关 键 词：水性聚氨酯分散体 防水涂料 单组分 抗开裂 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]