在甲苯和戊酸/乙酸的环镜下，将602A与过氧化氢以一定的比例反应4h，反应后的混合物纯化；将602A原料与环氧后的产物与E51按照6：4的质量比复配制备涂层；测试前以3.5 wt.%的NaCl水溶液为电解液浸泡涂层1天，环氧树脂复合涂层制备工艺：刮涂湿膜厚度为200μm，在常温下固化12h，在60℃下固化12h

Under the ring microscope of toluene and valeric acid/acetic acid, 602A and hydrogen peroxide were reacted in a certain ratio for 4h, and the reacted mixture was purified; The coating was prepared by compounding the raw material of 602A with the epoxy product and E51 according to the mass ratio of 6:4; Before the test, 3.5 wt.% NaCl aqueous solution was used as electrolyte to soak the coating for 1 day, and the epoxy resin composite coating preparation process: the thickness of the scraped wet film was 200μm, cured at room temperature for 12h, and cured at 60°C for 12h.