Cerium Methacrylate Assisted Preparation of Highly Thermally Conductive and Anticorrosive Multifunctional Coatings for Heat Conduction Metals Protection

Preparing polymeric coatings with well corrosion resistance and high thermal conductivity (TC) to prolong operational life and ensure service reliability of heat conductive metallic materials has long been a substantive and urgent need while a difficult task. Here we report a multifunctional epoxy composite coating (F-CB/CEP) by synthesizing cerium methacrylate and ingeniously using it as a novel curing agent with corrosion inhibit for epoxy resin and modifier for boron nitride through cation-p interaction. The prepared F-CB/CEP coating presents a high TC of 4.29 W m(-1) K-1, which is much higher than other reported anti-corrosion polymer coatings and thereby endowing metal materials coated by this coating with outstanding thermal management performance compared with those coated by pure epoxy coating. Meanwhile, the low-frequency impedance remains at 5.1 x 10(11) & O cm(2) even after 181 days of immersion in 3.5 wt% NaCl solution. Besides, the coating also exhibits well hydrophobicity, self-cleaning properties, temperature resistance and adhesion. This work provides valuable insights for the preparation of high-performance composite coatings with potential to be used as advanced multifunctional thermal management materials, especially for heat conduction metals protection.

Automated summary

In this study, a multifunctional epoxy composite coating (F-CB/CEP) was prepared by synthesizing cerium methacrylate as a novel curing agent for epoxy resin and using it as a corrosion inhibitor and modifier for boron nitride through cation-p interaction. The prepared F-CB/CEP coating showed high thermal conductivity and excellent corrosion resistance, as well as good low-frequency impedance, hydrophobicity, self-cleaning properties, temperature resistance, and adhesion.