PPGConfidentialMaterial-E-Coat1PPG电泳漆基础知识Mar,2012PPGConfidentialMaterial-E-Coat2使用电泳漆的原因?•质量-提高防腐和抗石击性能•自动化-提高生产率•不规则形状工件可操作性•环保/安全•水性涂料可挥发溶剂非常低•无火灾隐患(80%为水)•膜厚均匀-泳透力•提高漆膜外观-无流挂•95%以上材料利用率•单位面积低用量PPGConfidentialMaterial-E-Coat3电泳漆的局限性-环氧链在紫外线照射下裂解-外表面要求涂漆-特定漆膜颜色-要求占地面积-高初始投资PPGConfidentialMaterial-E-Coat4什么是电泳漆?PPGConfidentialMaterial-E-Coat5电泳产品和工艺阴极电泳漆•一种水性聚合物-酸极化•一种颜料浆–包含防腐颜料(为特定树脂所“包裹”)•包含多种溶剂–水溶性•包含DI水或RO水PPGConfidentialMaterial-E-Coat6一加伦电泳槽液PPGConfidentialMaterial-E-Coat7树脂PPGConfidentialMaterial-E-Coat8典型环氧树脂分子结构环氧树脂形成电泳漆膜主框架,并提供:漆膜硬度,柔性,附着力;湿膜电阻,包裹颜料等性能.PPGConfidentialMaterial-E-Coat9典型树脂混合•主树脂•缩孔控制树脂•流平控制树脂•增塑剂•溶剂•80-85%•6-10%•0-5%•2-5%•0-2%PPGConfidentialMaterial-E-Coat10成膜原理(阴极树脂)(-)cathode(+)anodeHOeOH12H2--2HOH12O+2e22-2cations-anions+OHsolubleinsolubleprecipitatesoncathodeNHNPPGConfidentialMaterial-E-Coat11颜料浆PPGConfidentialMaterial-E-Coat12颜料浆组成PPGConfidentialMaterial-E-Coat13颜料组成•TitaniumDioxide•炭黑•DBTO(氧化二丁基锡)•硅酸盐PPGConfidentialMaterial-E-Coat14循环系统的主要作用•搅拌–避免沉积•过滤–除去灰粒•制冷–保持温度•超滤–提供洗液•阳极–保持电导PPGConfidentialMaterial-E-Coat15PPGConfidentialMaterial-E-Coat16槽液循环PPGConfidentialMaterial-E-Coat17槽液循环PPGConfidentialMaterial-E-Coat18PPGConfidentialMaterial-E-Coat19PPGConfidentialMaterial-E-Coat20PPGConfidentialMaterial-E-Coat21槽液循环PPGConfidentialMaterial-E-Coat22置换槽PPGConfidentialMaterial-E-Coat23泵,过滤网,过滤器PPGConfidentialMaterial-E-Coat24热交换器PPGConfidentialMaterial-E-Coat25清洗系统PPGConfidentialMaterial-E-Coat26闭环PPGConfidentialMaterial-E-Coat27循环喷淋PPGConfidentialMaterial-E-Coat28浸洗PPGConfidentialMaterial-E-Coat29清洗系统PPGConfidentialMaterial-E-Coat30超滤系统主要作用•提供闭环清洗超滤液•提供滤出水溶性污染物的方法PPGConfidentialMaterial-E-Coat31超滤膜功能•提取水及小分子•保留大分子物质(树脂和颜料)PPGConfidentialMaterial-E-Coat32超滤系统PPGConfidentialMaterial-E-Coat33阳极系统PPGConfidentialMaterial-E-Coat34阳极盒PPGConfidentialMaterial-E-Coat35板式阳极结构PPGConfidentialMaterial-E-Coat36阳极系统PPGConfidentialMaterial-E-Coat37供电系统PPGConfidentialMaterial-E-Coat38电泳基理PPGConfidentialMaterial-E-Coat39供电系统PPGConfidentialMaterial-E-Coat40带电入槽PPGConfidentialMaterial-E-Coat41顶部阳极PPGConfidentialMaterial-E-Coat42泳透力电泳漆在电场力的作用下到达复杂金属凹陷区域深处的实际效果PPGConfidentialMaterial-E-Coat43夹板泳透力PPGConfidentialMaterial-E-Coat44方箱泳透力PPGConfidentialMaterial-E-Coat45影响泳透力的因素槽液电导•施工电压•槽液温度槽液P/B•通电时间PPGConfidentialMaterial-E-Coat46影响泳透力的因素施工电压PPGConfidentialMaterial-E-Coat47影响泳透力的因素槽液电导PPGConfidentialMaterial-E-Coat48影响泳透力的因素槽液温度PPGConfidentialMaterial-E-Coat49影响泳透力的因素P/BPPGConfidentialMaterial-E-Coat50影响泳透力的因素通电时间PPGConfidentialMaterial-E-Coat51变化槽液电导提高槽液电导降低施工电压升高施工电压降低槽液温度升高槽液温度降低通电时间增加通电时间减少槽液固含增加槽液固含减少湿膜电阻提高湿膜电阻降低槽液P/B提...