采用纳米TiO2、缓蚀剂BTA及助剂等对水性丙烯酸 乳液改性，制成铜和铜合金防蚀封护剂.用电化学交流阻抗法(EIS)，紫外吸收光谱法、盐雾实验、耐化学品、耐水性测试和力学性能测试等，研究其性能的结果表明，该封护剂综合性能优异，对铜合金具有较强的保护能力.纳米TiO2的紫外线特性，有效提高了涂层抗紫外光老化能力.
A TRANSPARENT COATINGS FOR COPPER SURFACE RROTECTION XU Chun-chun，YU Miao,WANG Ju-ling,HE Zong-hu School of Materials Science and Engineering,Beijing University of Chemical Technology Protective coatings for copper alloy were prepared using acrylic resin emulsion modified by nanometer TiO2 and corrosion inhibitor Benzotriazole(BTA).Electrochemical impendance spectroscopy(EIS),ultraviolet spectroscopy,salt fog test,chemical resistance,water proofness and mechanical performances were all employed to study its properties.Results showed that the coatings have excellent performances and can protect copper alloy effectively.Anti-ultraviolet aging ability of coatings is improved effectively by adding nanometer TiO2.The coating is achromic,transparent,non-toxic and odorless.It's friendly to environment. copper; BTA; nanometer TiO2; alternating current impedance; aqueous coatings
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