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涂装技术及涂料讲座 PowerPoint PPT Presentation


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涂装技术及涂料讲座. 二 003 年 2 月. 一、防腐蚀技术简介. 1 腐蚀对国民经济的影响 2 防止腐蚀的途径: 正确选择材料 进行正确的防腐蚀设计 电化学保护 缓蚀剂防腐蚀 保护性覆盖层防腐蚀:. 3 涂层的破坏历程: 泛白 — 起泡 — 生锈 — 连续脱落 最主要的因素是漆膜能透过一定量的水分、氧和某些离子。水透过漆膜后,油相和水相互相渗透,并将底漆中的可溶物溶解,或生成腐蚀产物。. 4 涂层防腐蚀的机理 1 )隔离作用; 2 )电阻作用; 3 ) 钝化作用。

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涂装技术及涂料讲座

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