原位聚合法制备PANI/EP导电防腐蚀涂层

Preparation of Conductive and Anticorrosive Polyantane/Epoxy Resin Coating via In-Situ Polymerization

传统方法制备的聚苯胺防腐蚀导电涂层,聚苯胺易下沉,使涂层电导率差。为此,借用原位聚合方法制备了聚苯胺/环氧树脂(PANI/EP)复合防腐蚀涂层。利用相应的性能测试方法检测和比较了不同反应条件下(如苯胺单体用量、引发剂的用量、酸量、聚合时间)合成的聚苯胺复合涂层的导电性能,并将其与传统方法制备的涂层进行了比较。结果表明:降低了氧化剂、酸的用量;因为降低了聚苯胺的粒径而减轻了聚苯胺粒子在涂层中的下沉,从而提高了涂层的导电性能,电导率达到1.6×10-2S/m。

Composite conductive and anticorrosive polyaniline/epoxy resin(PANI/EP)coatings were prepared by using in-situ polymerization method.The electric conducting behavior of the composite coatings ob-tained at various reaction conditions(dosage of PANI monomer,initiator,and acid,and polymerization time)was compared with that of conventional same coating.It was found that the dosage of oxidant and acid for in-situ polymerization of PANI/EP could be reduced as compared with conventional methods.At the same time,the grit size of PANI particulates was reduced,and the ag-gregation of the PANI particulates in the final composite coating was alleviated,which could be beneficial to improve the electric conductive behavior of the final coatings.Namely,the electric conductivity of the final composite coating can be as much as 1.6×10-2 S/m.