不同PH值的脱漆剂对轨道交通铝合金表面复合涂层的脱漆效果和基材腐蚀影响研究  

Effect of Paint Removers at Different PH Values on Paint Removal and Corrosion of Aluminium Alloy for Rall Transit Equipments

作　　者：曹志伟 孙琳 韦涛[2] 林化强 林鹏 史洪微[2] 刘福春[2] 韩恩厚[2] 

机构地区：[1]中车青岛四方机车车辆股份有限公司国家高速动车组总成工程技术研究中心,青岛266111 [2]中国科学院金属研究所中国科学院核用材料与安全评价重点实验室,沈阳110016

出　　处：《材料开发与应用》2016年第5期86-90,共5页Development and Application of Materials

基　　金：国家自然科学基金(51001109)

摘　　要：考察了弱酸性(p H=5)、弱碱性(p H=8)和碱性(p H=10)脱漆剂对轨道交通用7系铝合金表面复合有机涂层(磷化底漆、环氧底漆和聚氨酯面漆)的脱漆效果。结果发现,不同脱漆剂的脱漆时间有明显差别,弱酸性脱漆剂快于弱碱性和碱性脱漆剂;从脱漆的效果来看,弱碱性脱漆剂的脱除效果最为显著。浸泡实验表明,酸碱性不同的脱漆剂对铝合金基材造成的腐蚀明显不同,弱酸性脱漆剂造成铝合金的局部点蚀,弱碱性脱漆剂对铝合金基本不造成腐蚀,而碱性脱漆剂则会造成铝合金的全面腐蚀。The effects of weakly acidic remover（ p H = 5）,weakly alkaline remover（ p H = 8） and alkaline remover（ p H = 10）on removal of paint on 7 series aluminium alloys were investigated. The aluminium alloy was coated with phosphide primer,epoxy primer and polyurethane topcoat. The results showed that the removal time was shorter for weakly acidic remover than those for weakly alkaline and alkaline removers. Weakly alkaline remover functioned better in removing the paint. The immersion tests indicated that weakly acidic remover resulted in the local pitting corrosion of aluminium alloy,weakly alkaline remover merely caused corrosion of aluminium alloy,and alkaline remover resulted in the overall corrosion of aluminium alloy.

关 键 词：有机涂层 脱漆剂 铝合金 点蚀 

分 类 号：TQ619[化学工程—精细化工]