水性聚氨酯导电涂层的制备及其性能

Preparation and Properties of Waterborne Polyurethane Conductive Coatings

以异佛尔酮二异氰酸酯(IPDI)与聚四氢呋喃二醇(PTMG-1000)为主要原料合成水性聚氨酯乳液并通过红外光谱表征了产物结构。探究了不同二羟甲基丙酸(DMPA)、无水乙二胺(EDA)和三乙胺(TEA)用量对乳液粒径的影响。以制得的水性聚氨酯乳液为基质,炭黑为导电填料,制备得到导电性能优异的水性导电涂层。探究了炭黑的用量对导电涂层方阻的影响,当炭黑用量为10wt%时,导电涂层方阻约为948Ω,并且在撕拉以及弯曲过程中,涂层的电导率基本不变。

The water-based polyurethane emulsion was synthesized by isophorone diisocyanate(IPDI)and polytetrahydrofuran glycol(PTMG-1000),and the structure of the product was characterized by infrared spectroscopy.The influence of different amounts of dimethylolpropionic acid(DMPA),anhydrous ethylenediamine(EDA)and triethylamine(TEA)on the particle size of the emulsion was explored.Using the prepared water-based polyurethane emulsion as a matrix and carbon black as a conductive filler,a water-based conductive coating with excellent electrical conductivity was prepared.The influence of the amount of carbon black on the square resistance of the conductive coating was explored.When the amount of carbon black was 10wt%,the square resistance of the conductive coating was about 948Ω,and the conductivity of the coating during the tearing and bending process Basically unchanged.