基于可分散聚苯胺的紫外光固化防腐涂料的研究

Abstract

采用酸性磷酸酯作为掺杂剂对本征态聚苯胺(EB)进行掺杂,制备了可在聚氨酯丙烯酸酯中进行纳米分散的导电聚苯胺(ES),其分散粒径分布为60765 nm之间,进而制备了不含重金属的紫外光固化聚苯胺防腐涂料.随着体系中导电聚苯胺含量从0.5 wt%增大5.0 wt%,粒径从60100 nm增加到190765 nm.导电聚苯胺含量增大,导致了ES发生团聚,从而粒径增大,进而降低防腐涂层的致密性.当ES含量为1.0wt%时,粒径在110180 nm之间,防腐涂层在3.5 wt%的Na Cl水溶液中浸泡2400 h后,其0.1 Hz下的绝对阻抗值(|Z|0.1 Hz)仍高于1.0×108Ωcm2,同时4550μm的防腐涂层在划叉中性盐雾试验中,500 h内没有出现起泡现象,且锈蚀宽度小于1 mm,表现出优异的防腐性能

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Changchun Institute of Applied Chemistry, Chinese Academy Of Sciences

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Last time updated on 13/03/2018

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