第43卷第4期 2013年4月
涂料工业
PAINT & COATINGS INDUSTRY
Vol.43 No.4 Apr.2013
铝合金保护用富镁底漆的研制及其性能研究
戈成岳！2，付文峰"，凌建雄”，陈卓元”，罗运柏
（1.中山大桥化工集团有限公司，广东中山528403：2.武汉大学化学与分子科学学院，
武汉430072；3.中国科学院海洋研究所，山东青岛266071）
摘要：开发了一种可以取代铬酸盐处理技术的环氧富镁底漆，对铝合金材料提供牺性阳极保护通过对镁粉的表面处理和配方优化，获得了贮存稳定、便于喷涂的富镁底漆；通过涂层基本性能测试、盐雾试验、金相显微镜观察确定了镁粉的合适用量，研究了镁粉细度对涂层性能的影响，考察了防沉剂的选择和用量对体系贮存稳定性的影响，以及涂层对2024-T3铝合金材料的保护效果。研究表明：镁粉在富镁底漆中合适的PVC为45%左右，粒径小有助于增加其在体系中的添加量：气相SiO，和有机膨润土配合使用可以获得更满意的忙存稳定性：富镁底漆对2024-T3铝合金表现出优越的耐盐雾保护性能。
关键词：高镁底漆：环氧树脂：铝合金保护：盐雾试验：贮存稳定性
中图分类号：TO635.2
文献标识码：A
文章编号：0253-4312(2013)04-0023-07
StudyonPreparationandPropertyof Magnesium-Rich
PrimerUsed forProtection of Aluminum Alloy
Ge Chengyue'.2, Fu Wenfeng',Ling Jianxiong', Chen Zhuoyuan', Luo Yunbai?(1.Zhongshan Daoqum Chemical Group Co.,Lad.,Zhongshan,Guangdong 528403,China; 2.College of Chemical and Molecular Science,Wuhan University,Wuhan 430072, China; 3.Institute of Oceanology,Chinese Academy of Sciences,Qingdao,Shandong 266071,China)
Abstract: A kind of magnesium - rich epoxy primer, has been devehoped which could re-place chromate - treatment technology and provide sacrificial protection for aluminum alloy. The Mg - rich primer showed excellent storage stability and easily application by surface treat ment of magnesium powder and optimization of recipe.Through tests of basic performance, salt-spray and surface morphology by metallurgical microscope, the appropriate dosage of magnesium powder in the Mg -rich system was determined and effects of fineness of magnesi-um powder on coating performance were investigated.Furthermore, effects of anti - settling agent's types and dosage on storage stability were studied and protective performance of the Mg rich primer for 2024 -T3 aluminum alloy were investigated. The result showed that in the Mg -rich primer, suitable PVC of magnesium powder was about 45% , and small size of mag-nesium powder was benefit for higher loading. Use of fumed silica and organic bentonite would lead the system better storage stability. The Mg - rich primer could provide excellent salt spray-resistanceprotectionfor2024-T3aluminumalloys
作者简介：戈成册（1982一），男，在站博士后，主要从事重防扇涂料研究。
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工艺技术