喷汽车清漆时为什么会出现油点?

2025年03月16日 00:51
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网友(1):

造成这样局面可能有几个原因:

第一是施工环境不过关,密闭的不好,在施工的过程中有水雾落在车漆表面;

第二是油水分离器有问题,喷枪内有水;

第三是车漆的干燥过程中落到水雾。

如果喷漆后有点看能够通过抛光解决,抛光解决不掉的就需要重新喷了。

汽车清漆层有两种作用:一是增加漆的亮度和反光度,二是用以保护色漆层。它的特点有以下四点:

  1. 清漆一般含有减少紫外线照射的保护功能,只要清漆层完好无损,它可有效延缓色漆的老化。

  2. 目前原厂采用的清漆材料主要为高温固化的单组分漆:聚氨酯或聚酯,修补漆常用的清漆材料主要为自然固化的双组分丙烯酸酯类。

  3. 清漆美观,光泽度很高,但易出现划痕。如果洗车后用稍有些发硬的毛巾或麂皮去擦车,就会发现发丝划痕。

  4. 清漆比普通漆更易受到环境污染的侵蚀。有害物质的来源包括:车尾气中放出的二氧化碳的炭黑及飞机航空油中飘落的杂物有酸雨、酸雾、酸雪等。这些杂物一旦落在车上,加上空气中的水份,就变成腐蚀清漆的酸性溶液。稍一加温,便开始发生化学反应,侵蚀汽车漆的保护层。一次、两次并不明显,但若长期不做护理,最终这种化学反应会侵蚀到色彩层、底漆层和金属。

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