车牌底漆不小心掉了一块有影响吗

车牌底漆不小心掉了一块有影响吗
2025-04-07 02:42:53
推荐回答(1个)
回答1:

1、问题现象:漆膜表面出现鳞片状脱落。这些脱落的漆片易碎,其边缘呈上卷状脱离基底表面。机械面漆层与其下层表面失去结合力。
2、问题原因:
   a)下层表面受到蜡、油脂、硅酮、油、脱模剂、水、铁锈或肥皂水等的污染。
  b)在钢或铝基底表面未使用金属表面处理剂,或者所使用的金属处理剂型号不对。
  c)基底表面结合力不够。
  d)喷漆时,基底表面温度太高或太低。
  e)喷涂底漆的方法不当,底漆未充分干燥。
  f)油漆的黏度不适当,所使用的稀料型号不对或质量太差,压缩空气的压力太高。
  g)漆膜太厚。
  h)相邻两层漆膜之间存在内应力。
3、解决对策:
   a)要保证认真地清洗准备喷涂的基底表面,并用干净布将表面揩干。
  b)在钢或铝基底表面一定要使用正确的金属的表面处理剂,基底表面处理好30分钟内开始喷漆,以防基底表面生锈。
  c)喷涂前,要对基底表面进行打磨处理,并且要注意将所有磨硝全部清除干净。
  d)喷涂和干燥过程中,要保证底漆充分固化后才可继续喷涂面漆。

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