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彩涂卷表面无光泽度的原因

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彩涂卷表面无光泽度的原因

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彩涂辊光泽度差,如涂料固化后未达到光泽度或色斑,或涂料固化数小时后,彩涂辊光泽度降低,使用后光泽度降低。这些现象的原因是什么?让我们学习:
原因:油漆配方的原因。涂料中颜料、填料、溶剂用量过多、粒径不足或粉尘过多。基材表面语言粗糙,包括油、水、蜡等,涂层未完全固化。油漆在上机前未充分搅拌,油漆固体沉积在桶底,施工时工作桶内油漆较少。在涂料中加入过多稀释剂,削弱了光涂料的作用。表面涂层太薄,滚筒在室温下过高或过低。固化炉温度设定过高,炉内热风循环不彻底,涂层过热,造成眼睛老化,光泽下降。
彩涂辊表面不光泽度的原因
处理方法:检查上涂层的细度是否符合工艺要求。涂膜前应充分搅拌过滤,稀释剂不宜过多。控制涂层室的湿度,防止水分混入涂层。检查稀释剂与油漆的相容性,确保表面涂层的湿膜厚度不太薄。固化炉各炉温的设定应有效,防止过高或过低。
以上是造成彩涂辊表面光泽度的主要原因和解决办法,必须引起我们的高度重视。

The gloss of the color coating roll is poor, such as the gloss or color spots are not reached after the coating is cured, or after the coating is cured for several hours, the gloss of the color coating roll is reduced and the gloss is reduced after use. What are the reasons for these phenomena? Let's learn:

Cause: cause of paint formulation. The amount of pigment, filler and solvent in the coating is too much, the size is insufficient or the dust is too much. The surface language of the substrate is rough, including oil, water, wax, etc., and the coating is not fully cured. The paint is not stirred completely before it is put on the machine, and the solid of the paint is deposited at the bottom of the barrel, so that the paint in the working barrel is less during the construction. Too much diluent is added to the coating, which weakens the function of the light coating. The surface coating is too thin and the roller is too high or too low at room temperature. The setting of curing furnace temperature is too high, the hot air circulation in the furnace is not complete, and the coating is overheated, which causes the aging of eyes and the decrease of luster.
The reason of no glossiness on the surface of color coated roll
Treatment method: check whether the fineness of the upper coating meets the process requirements. Before coating, the coating should be completely stirred and filtered, and the diluent should not be too much involved. Control the humidity of the coating chamber to prevent moisture from mixing into the coating. Check the compatibility of diluent and paint to ensure the wet film thickness of surface coating is not too thin. The setting of each furnace temperature of curing furnace shall be effective to prevent too high or too low.
The above are the main reasons and solutions for the surface gloss of color coated roll, so we must pay more attention to these problems.
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