铝合金用水性聚氨酯涂料的研制  

Preparation of Waterborne Polyurethane Coating for Aluminum Alloy

作　　者：贺玉平 彭时贵 孙汉洲[2] 

机构地区：[1]株洲飞鹿高新材料技术股份有限公司,株洲412005 [2]中南林业科技大学,长沙410004

出　　处：《腐蚀与防护》2015年第12期1146-1149,共4页Corrosion & Protection

基　　金：国家科技部林业公益性行业科研专项(201304603)

摘　　要：通过合成聚氨酯乳液,采用有机改性铝钼正磷酸锌为防锈颜料,制备了铝合金用水性聚氨酯涂料。探讨了桐油酸单甘酯用量、防锈颜料、颜基质量比和助剂的选用对涂料性能的影响。结果表明:在桐油酸单甘酯用量为20%(质量分数),以有机改性铝钼正磷酸锌为防锈颜料,颜基质量比为1.2时,涂膜具有良好防腐蚀性能,与铝合金基体间的附着力较强。A waterborne polyurethane coating for Al alloy was prepared by synthesis of polyurethane emulsion and using zinc orthophosphate organically modified by aluminum and molybdenum as anti-corrosive pigment.The effects of anti-corrosive pigment,content of tung oil acid monoylyceride（EAM）,ratio of pigment to binder and auxiliaries on properties of the coating were discussed.The results indicate that the anti-corrosion properties of the waterborne polyurethane coating were good,the adhension between the coating and Al alloy was high,when the content of EAM was 20%,the anti-corrosive pigment was zinc orthophosphate organically modified by aluminum,and the mass ratio of pigment to binder was 1.2.

关 键 词：水性涂料 铝合金 桐油酸单甘酯 聚氨酯 

分 类 号：TG174.46[金属学及工艺—金属表面处理]