天冬聚脲树脂改性及涂层性能研究  

Study on Modification of Coating Properties of Aspartic Polyurea Resin

作　　者：薛隽 Xue Jun(Shenzhen Feiyang Junyan Protech Corp Ltd.,Shenzhen 518100,China)

机构地区：[1]深圳飞扬骏研新材料股份有限公司,广东深圳518100

出　　处：《广东化工》2024年第22期54-56,67,共4页Guangdong Chemical Industry

摘　　要：本文通过酯交换方法[1],用长链单醇将常规天门冬氨酸酯(F420)分子上的四个乙酯基团部分取代,从而制备了具有部分长侧链的特殊天门冬氨酸酯树脂,这种长脂肪链基团本身具有很好的柔韧性、疏水性和内增塑性,并且长侧链烷基对马来酸酯基团具有良好的缠绕、位阻保护作用,大大降低了环境中水分子对马来酸酯键的水解破坏作用,特别是在潮湿盐碱环境下的耐水解稳定性显著提高。将这个改性树脂制备防腐防水涂料并做了一些基础性能研究,实验结果显示在耐水解性能、耐人工气候老化等性能上相比于常规F420树脂具有明显的提升。By transesterification method,the four ethyl groups on the conventional polyaspartic acid resin(F420) were partially replaced by long chain mono-alcohol,so as to make special polyaspartic resin with part of long side chain.This long chain group has good steric protection on the ester bond of the whole polyaspartic acid resin,especially in the salt-alkali environment,the stability of hydrolysis resistance is greatly improved.The modified resin was used to make waterproof coating and some properties were studied.The experimental results showed that the hydrolytie resistance and weathering resistance of F420 are significantly improved compared with conventional F420.

关 键 词：天冬聚脲 天门冬氨酸酯 树脂改性 聚脲涂料 

分 类 号：TQ630.1[化学工程—精细化工]