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丙烯酸聚氨酯漆施工前处理

作者:admin 来源: 日期:2013/7/15 10:22:40 人气: 标签:丙烯酸聚氨酯漆

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达不到丙烯酸聚氨酯漆应有的维护和装饰作用。因此,各种涂料,不论采用哪种施工方法,都不能忽视对底材的外表处置这个问题。就金属而言,涂漆前外表有锈层、坑凹、油垢、焊渣、水分、有的还有旧漆膜。如果不做外表处置而直接涂装,会导致漆膜外观不良,及先天隐患。如丙烯酸聚氨酯漆涂膜的耐水,耐油,耐酸碱性降低,有的很快剥落,有的慢慢会产生锈斑,降低漆膜的维护及装饰效果。因此必需进行处置,不可马虎从事。

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丙烯酸聚氨酯漆经喷砂处理后的外表,对涂膜提供良好的机械附着力。把黑色金属制在酸液中进行浸洗。使酸溶液与金属外表氧化物产生化学反应,以达到除锈的目的经酸洗后的金属外表,必需用水完全冲洗以除去余酸,然后用5%碳酸钠溶液进行中和,或20%石水再用温水冲洗,待干后立即涂装。此法特别适合形状结构复杂的工件进行处理。丙烯酸聚氨酯漆带锈涂装已大大应用。

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氟碳漆