基于可再生脂肪酸的水性醇酸杂化树脂的制备及应用  

Preparation and Application of Waterborne Alkyd Hybrid Resin Based on Renewable Fatty Acids

作　　者：刘明 庄振宇 祝宝英 张汉青 胡中 许飞 吴雪艳 孙家娣 左慧明 陈力 梁晟源 胡东波 刘汉功 Liu Ming;Zhuang Zhenyu;Zhu Baoying;Zhang Hanqing;Hu Zhong;Xu Fei;Wu Xueyan;Sun Jiadi;Zuo Huiming;Chen Li;Liang Shengyuan;Hu Dongbo;Liu Hangong(CNOOC Changzhou Paint and Coatings Industry Research Institute Co.,Ltd.,Changzhou,Jiangsu 213016,China;National Engineering Research Center for Coatings,Changzhou,Jiangsu 213016,China)

机构地区：[1]中海油常州涂料化工研究院有限公司,江苏常州213016 [2]国家涂料工程技术研究中心,江苏常州213016

出　　处：《涂层与防护》2024年第9期56-61,共6页Coating and Protection

摘　　要：通过多元醇和二异氰酸酯发生亲核加成反应合成端羟基预聚体,引入氨酯键结构,然后经过熔融聚合生成醇酸预聚体,在醇酸预聚体两端接枝活性不饱和功能单体,然后再经过溶液聚合进行丙烯酸改性,最后用胺中和即得到水性醇酸杂化树脂,并利用合成的水性醇酸杂化树脂制备了水性醇酸涂料。重点考察了多元醇类别、顺酐的用量、丙烯酸酯单体的用量、玻璃化转变温度等对树脂及涂料性能的影响。实验发现,当合成端羟基预聚体选取的多元醇为2-甲基-1,3-丙二醇,不饱和活性单体顺酐的用量为2%,丙烯酸酯单体的用量为28%,玻璃化转变温度为13℃时,所制得的水性醇酸杂化树脂综合性能最好,满足实际应用需求。The hydroxy terminal prepolymer was synthesized by nucleophilic addition reaction of polyhydric alcohols and diisocyanates,wherein the structure of aminoester bond was introduced to prepare an alkyd prepolymer via the melting polymerization.The active unsaturated functional monomer was grafting on both ends of the prepared alkyd prepolymer.Then the alkyd prepolymer is polymerized in solution to modify acrylic acid,and was further neutralized with amine to obtain waterborne alkyd hybrid resin.The waterborne alkyd coatings were prepared by using the synthesized waterborne alkyd hybrid resin.The effects of the type of polyhydric alcohols,the amount of maleic anhydride,the amount of acrylic monomer and the glass transition temperature on the properties of the resin and coatings were investigated.The results showed that the comprehensive performance of the waterborne alkyd hybrid resin was the best and met the practical application requirements when the polyhydric alcohols for the synthesis of hydroxy terminated prepolymers were 2-methyl-1,3-propanediol,the amount of unsaturated active monomer maleic anhydride was 2%,the amount of acrylate monomer was 28%,and the glass transition temperature was 13℃.

关 键 词：端羟基预聚体 醇酸预聚体 不饱和功能单体 水性醇酸杂化树脂 水性醇酸涂料 

分 类 号：TQ630[化学工程—精细化工]