醛亚胺改性天冬聚脲美缝剂的制备及性能  

Preparation and Properties of Aspartic Polyurea Stitching Agent Modified by Aldehyde Imide

作　　者：谢成 Xie Cheng(Foshan Wanhua Technology Co.,Ltd.,Foshan Guangdong 528231,China)

机构地区：[1]佛山万化科技有限公司,广东佛山528231

出　　处：《山西化工》2024年第9期34-35,111,共3页Shanxi Chemical Industry

摘　　要：采用醛亚胺改性天冬聚脲树脂为主体,脂肪族异氰酸酯为固化剂,研制出一种具备长活化期、快速干燥和超高固含量的改性天冬聚脲美缝剂。并考察了不同醛和用量对美缝剂性能的影响,结果表明羟基新戊醛改性摩尔分数为20%时,所制备的改性天冬聚脲美缝剂具有固含量达99.5%以上,施工时长60 min以上,表干20 min以内,该漆膜的耐黄变性、耐磨性能和力学强度表现优异,是一种优秀的环保型长效高端美缝材料。Aldehyde imide modified aspartate polyurea resin was used as the host resin and aliphatic isocyanate was used as the curing agent to prepare a modified aspartic polyurea stitching agent with long activation period,rapid drying and ultra-high solid content.The effects of different aldehydes and dosage on the properties of the stitching agent were investigated.The results showed that the modified aspartame stitching agent had a solid content of more than 99.5%when the molar ratio of hydroxypivalaldehyde was 20%and surface drying is within 20 min,the paint film has excellent yellowing resistance,abrasion resistance and mechanical strength,and is an excellent environment-friendly long-term high-end beautiful seam materia.

关 键 词：醛亚胺 天冬聚脲 美缝剂 长活化期 快速干燥 

分 类 号：TQ333.95[化学工程—橡胶工业]