掺杂态聚苯胺的性能及其防腐应用研究进展

聚苯胺具有良好的导电性和独特的掺杂-解掺杂特性,成为近年来备受关注的导电高分子材料,其特有的抗划伤、抗点蚀和钝化性能使其在金属防腐领域拥有巨大的应用前景。聚苯胺结构中苯环的存在,使得其分子链具有较大刚性,而分子间氢键又导致其难溶、难熔、可加工性能较差,严重制约了聚苯胺的应用。掺杂过程能有效改善聚苯胺的某些性能,或赋予其新的功能,扩展聚苯胺的应用。本文综述了聚苯胺的掺杂方式、掺杂机理、聚苯胺防腐材料的制备方法,以及其在金属防腐领域的应用,展望了聚苯胺的研究和应用前景。

Performance of Doped Polyaniline and Its Research Progress of Anti-corrosion Application

Polyaniline (PANI) has good electrical conductivity and unique doping-dedoping properties,and it has become a high-profile conductive polymer material in recent years.Because of its unique properties of scratch-resistant,anti-pitting and passivation,PANI has owned great application prospects in the field of metal anti-corrosion.The presence of the benzene ring in the polyaniline structure makes its molecular chains more rigid,and intermolecular hydrogen bonds lead to its insoluble,refractory,poor processing performance,which seriously hampered the application of polyaniline.The doping process can effectively improve some properties of polyaniline or give it a new function,which extends the application of polyaniline.This article reviews the doping way and the doping mechanism of polyaniline,preparation methods of polyaniline anti-corrosion material,as well as its application in the field of metal anti-corrosion,and looks forward to the research and application prospects of polyaniline.