Abstract:The epoxy group-containing fluororesin is obtained by copolymerization of perfluorohexane ethyl acrylate and glycidyl methacrylate; and two amine curing agents are prepared by using perfluoropolyether alcohol, diethylamine and polyether amine as raw materials respectively. Agent. The structure of the fluororesin and curing agent was characterized by FTIR. The fluororesin coating agent with a mass fraction of 1% (based on the total mass of the coating agent) was cured on the surface of the copper plate to form a film. The coating was studied by water contact angle, neutral salt spray test, EIS, polarization curve and the like. Corrosion resistance to copper plates. The results show that the contact angle of fluororesin FX on the surface of copper plate is above 120°, and the salt spray corrosion resistance of F-6 and F-5 series coatings can be more than 24h, which is twice that of commercially available electronic coating liquid EGC-1702, F-5 series fluororesin coating impedance modulus can reach 600Ω or more and double the EGC-1702, and the corrosion current density of F-6 series fluororesin before and after corrosion increases from 1.201×10-4A to 2.649×10-4A, electrochemical impedance spectroscopy and The polarization curve analy-sis showed that the synthesized fluororesin was excellent in corrosion resistance. Thermogravimetric analy-sis showed that the thermal decomposition temperature of the coating was higher than 330 °C and the thermal stability was good.
