新型改性醇酸树脂涂料的制备及性能研究  

Preparation and properties of novel modified alkyd resin coating

作　　者：叶庆国[1] 薛兴楠 王娇梅[1] 

机构地区：[1]青岛科技大学化工学院,山东青岛266042

出　　处：《化工科技》2015年第3期43-46,共4页Science & Technology in Chemical Industry

摘　　要：采用脂肪酸一步法合成了端羟基醇酸树脂,并给出了甲苯二异氰酸酯（TDI）改性醇酸树脂的制备工艺。从树脂涂料的固含量、表面干燥时间、硬度等方面考察了n（—NCO）∶n（—OH）、二羟甲基丙酸（DMPA）和三乙胺的用量、初期及中期聚合温度的影响,并对其进行了红外表征。实验结果表明：n（—NCO）∶n（—OH）=1.8,w（DMPA）≈5%,三乙胺在改性反应前加入,用量为1.7g（每20g样品）,初期聚合温度30℃、中期聚合温度80～85℃时,制得的涂料综合性能优异。The hydroxyl-terminated alkyd resin was synthesized by fatty acid process with one step method,and a novel process was developed for alkyd resin modification by TDI.The influences of—NCO/—OH molar ratio,DMPA,triethylamine,initial and middle polymerization temperatures on performances of product were studied,such as solid content,surface drying time and hardness.The sample was characterized by IR characterization.The most preferred results were obtained with—NCO/—OH molar ratio of 1.8,DMPA amount of about 5%,8.5% of triethylamine added before modification reaction,initial polymerization temperature of 30℃ and middle polymerization temperature of 80～85℃.The coatings obtained had excellent comprehensive performances.

关 键 词：醇酸树脂 TDI 改性 红外表征 

分 类 号：TQ630.43[化学工程—精细化工]