针孔(Pinholing)
描述(DESCRIPTION) 小凹穴,通常直径小于1MM。 Small cavities, generally less than 1 mm in diameter,
针孔(Pinholing)
预防(PREVENTION ) a)一次不要喷得太厚。Do not spray too thick one time, b)烘烤之前适当流平。Flashing the film before baking. c) 使用涂料厂商推荐的附料。Use only recommended materials. d) 正确调配油漆,使用较慢干稀释剂。Mix the paint correctly, use slow dry thinner. E)保持底材干净。)Keep materials clean.
d) 素材质量太差application over a poor substrate. e) 高湿低温时漆膜干燥太慢. excessively slow drying due to
high humidity or low temperature. f) 溶剂蒸气在漆膜表面冷凝. solvent fumes or exhaust gases
通常是基底有锈迹(擴大)、污垢、小 凹孔、磷化渣质、水汽等被封在漆膜 底下,漆膜在烤干或受热(受熱膨脹) 时,这些物质彭涨将漆膜顶起造成。
起泡的原因:
底下有 Money!
溶剂泡(Solvent Popping )
描述(DESCRIPTION) 新喷漆膜表面有直径小于1MM的小气泡。Open topped blisters up to 1mm in diameter on the surface of the most recently applied paint film.