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浅谈涂料施工时出现咬底的原因是什么

日期:2016年7月1日 浏览[1065]

 

1)前一道涂层固化剂用量不够,交联不充分;

2)刷涂面漆时操作不迅速,反复刷涂次数过多则产生咬底现象。


3)底漆未完全干燥就涂面漆,面漆中的溶剂极易将底漆溶解软化,引起咬底。


4)前后两遍涂层不配套。


5)对于油脂性漆膜以及干性油改性的一些合成树脂漆膜未经高度氧化和聚合成膜之前,一旦与强溶剂相遇,底漆漆膜就会被侵蚀。如底漆用酚醛漆,面漆使用硝基漆,则硝基漆中的溶剂就会把油性酚醛漆咬起,并与原附着基层分开。

 


1) the amount of curing agent used in the previous coating is not enough, and the crosslinking is not sufficient;


2) brush paint does not operate quickly, repeatedly brushing too many times would have to bite the end phenomenon.


3) is not completely dry primer coating, paint solvent can be easily dissolved by primer softening, bite the end.


Two, 4 times before and after the coating is not complete.


5) for oil film and drying oil modified some synthetic resin film not the highly oxidized and polymerized before, once met with strong solvents, primer coating will be eroded. Phenolic paint such as primer and finish to use lacquer, lacquer solvent will to oily phenolic paint to bite, and primary attached at the grassroots level separately.

 

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