基于疏水脂环胺H_(12)MDA的水性固化剂合成及应用  

Synthesis and Application of Waterborne Curing Agent Based on Hydrophobic Alicyclic Amine H_(12)MDA

作　　者：刘玄 陈浩[1] 刘大伟 牟昌盛 包颖 LIU Xuan;CHENG Hao;LIU Dawei;MOU Changsheng;BAO Ying(Wanhua Chemical Group Co.,Ltd.,Yantai,Shandong,264006,China)

机构地区：[1]万华化学集团股份有限公司,山东烟台264006

出　　处：《涂料工业》2024年第S1期47-51,59,共6页Paint & Coatings Industry

摘　　要：为增加固化剂的疏水效果,降低固化剂与水的亲和力,以提高水性涂料的耐水和耐腐蚀性能,选用疏水胺4,4'-二氨基二环己基甲烷(H_(12)MDA)代替亲水胺制备高性能水性固化剂,并将其用于制备水性环氧涂料。对漆膜的性能特别是抗流挂性能、耐热水浸泡性能、耐中性盐雾性能进行测试。结果表明:采用三乙烯四胺(TETA)与H_(12)MDA质量比为1∶1制备了高性能改性H_(12)MDA水性固化剂,由其制备的涂料操作时间为4 h,表干时间仅20 min;自带抗流挂效果,可以厚涂275μm不流挂;耐水性较好,沸水煮10 h、50℃水浸泡超过15 d不鼓泡;耐盐雾性能超过600 h,具有很好的耐水、耐腐蚀性能。In order to increase the hydrophobic effect of curing agent and reduce the affinity of curing agent with water,improve the water and corrosion resistance of waterborne coatings,hydrophobic amine 4,4'-diaminodicyclohexylmethane(H_(12)MDA)was selected to replace hydrophilic amine to prepare high-performance waterborne curing agent.We tested the properties of the waterborne epoxy coating,especially the sag resistance,hot water immersion resistance and salt spray resistance.The results showed that waterborne curing agent with high performance was prepared by using the mass ratio of triethylenetetramine(TETA)to H_(12)MDA of 1∶1,it had long pot life(4 h)and short tack-free time(only 20 min);it could be thick coated with 275μm without sagging;also it showed good water resistance and salt spray resistance;it could be boiled for 10 h and soaked in hot water(50℃)for more than 15 d without bubbling,salt spray resistance could exceed 600 h.

关 键 词：水性固化剂 疏水脂环胺 抗流挂性 耐水性 耐盐雾性 

分 类 号：TQ630.493[化学工程—精细化工]