经济型TGIC固化粉末涂料用聚酯树脂的合成及性能研究

Study on Synthesis and Properties of Polyester Resin for Economical Powder Coatings Based on TGIC

研究了酸值、酸解剂、功能性单体2,2,4-三甲基-1,3-戊二醇及固化促进剂对聚酯树脂及涂层性能的影响,合成得到了异氰尿酸三缩水甘油酯(TGIC)体系经济型94/6固化粉末涂料用聚酯树脂,同时研究了粉末涂料的固化反应.结果表明:本研究合成的聚酯树脂与常规93/7固化的聚酯树脂反应活化能相当,且固化后涂层的流平、机械性能、耐盐雾、耐水煮及耐候性能方面与之相当.

The effects of acid value,acidolysis agent,functional monomer 2,2,4-trimethyl-1,3-pentanediol and curing accelerator on the properties of polyester resin and coatings were studied.The polyester resin for 94/6 cured powder coatings based on TGIC was synthesized,and the curing reaction of powder coating was studied.The results showed that the reaction activation energy of the polyester resin synthesized was equivalent to that of the conventional 93/7 cured polyester resin,and the leveling,mechanical properties,salt spray resistance,boiling resistance and weather resistance of the cured coating were equivalent.