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为了解决国内镀锌钢板原用涂料附着力差、防腐性能欠佳的难题,化工部涂料工业研究所根据1983年《薄壁型钢结构技术规范》二次修订工作会议要求,并结合山西神头电厂工程的急需,于1984年开始了镀锌钢板防腐涂料的专题研究,他们在调查了国内现有涂料状况,通过对有关涂料的评价的基础上,进一步对镀锌钢板复合涂层进行了筛选,共对10种底漆(包括磷化处理) 的附着力和耐盐水性、5种底漆的耐盐雾和耐湿热性、23种面漆耐湿热和耐盐雾性作了对比试验,还选择了光、热、水强烈的武汉地区作人工加速老化的测定,试制成功了不使用磷化处理的(EM)环氧改性无规聚丙烯底漆与氧化橡胶磁漆面漆的配套涂料,可供镀锌钢板防腐专用。
In order to solve the problem of poor adhesion and poor corrosion protection of domestic original galvanized steel coatings, the Ministry of Chemical Industry’s Coatings Industry Research Institute complies with the requirements of the Second Revision Working Conference of the 1983 Technical Specification for Thin-Walled Steel Structures, combined with the Shentou Power Plant in Shanxi Province. Urgent needs of the project began in 1984 with a special study on galvanized steel anti-corrosion coatings. They investigated the current state of domestic coatings, and further screened galvanized steel composite coatings on the basis of evaluation of related coatings. A total of 10 primers (including phosphating) were tested for adhesion and salt water resistance, 5 primers for salt spray and hygrothermal resistance, and 23 topcoats for damp heat and salt spray resistance. The determination of artificial accelerated aging in Wuhan, where light, heat, and water were strong, was selected, and the matching coating of (EM)-epoxy-modified atactic polypropylene primer and oxidized rubber enamel topcoat that did not use phosphating was successfully tested. Available for galvanized steel corrosion.