摘要
以低聚物二元醇、异佛尔酮二异氰酸酯(IPDI)、N-甲基二乙醇胺(MDEA)和1,4-丁二醇(BDO)为主要原料制备了阳离子型端羟基聚氨酯树脂;再以IPDI、MDEA、BDO以及甲乙酮肟(ME-KO)为主要原料制备了阳离子型端异氰酸酯固化剂,将树脂与固化剂混合、分散乳化后进行电泳成膜。考察了电泳工艺参数、助溶剂丙二醇苯醚(PPH)用量、低聚物二元醇种类、树脂与固化剂的nNCO/nOH对漆膜表观及性能的影响。结果表明,电泳电压为60 V,电泳时间为40 s,PPH质量分数为3.0%(相对于树脂),以聚四氢呋喃醚二醇(PTMG-1000)为二元醇组分,nNCO/nOH为1.1时,漆膜表现出较好的性能及表观。
A queous hydroxyl-terminated cationic polyurethane resin which based on low relative molecular weight polymer diols,isophorone diisocyanate （IPDI）, methyldiethanolamine （MDEA）and 1,4-butylene glycol（BDO） were syn- thesized. The rosin was mixed and dispersed with end-capped crosslinking agent which based on IPDI ,MDEA,BDO and 2-butanone oxime（MEKO）,then the obtained emulsion was electroplated. The influence of electrophoresis process pa- rameters,the dosage of PPH cosolvent,the types of low relative molecular weight polymer diols, the influence of nNco/noH on the appearance and performance of the PU film were investigated. The result showed that the excellent performance could be obtained under the condition of （30 V for the electrophoresis voltage ,40 s for the electrophoresis time,the mass ratio at about 3. 0% for eosolvent PPH,PTMG-1000 as the soft segment and the nNco/noH ratio at 1. 1.
出处
《聚氨酯工业》
2013年第1期33-36,共4页
Polyurethane Industry
关键词
双组分电泳漆
阳离子聚氨酯
制备
电泳工艺
two-component electrophoresis paint
cationic polyurethane
preparation
electrophoresis process
