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铝镁锰屋面彩钢板有颜色差异的原因

返回列表 来源: 发布日期: 2020.12.21

铝镁锰屋面彩钢板有颜色差异的原因

造成铝镁锰屋面彩钢板色差的主要原因如下:
1、 涂料粘度不均匀:
铝镁锰屋面彩钢板涂料使用时,由于不同颜色的颜料粘度不一样,或由于混合不均匀,会出现结块现象。如果不能及时清除结块,在涂布压力下,颜料块会受到挤压,导致铝镁锰板镀层产生缺陷或变色。其主要原因是涂料使用过程中稀释剂挥发过快,造成附着力,如果涂料混合后不及时使用漆桶顶部的涂料,会因沉淀而降低粘度。

42.彩涂卷板生产厂家 (1)
2、 同批次涂料的混合:
铝镁锰屋面彩钢板造成色差的常见原因是不同批次的铝镁锰屋面板涂料混合使用。由于不同批次的涂料生产作业,或多或少会有差异,特别是在涂装加工时,不同批次的比例会有所不同。即使是同一厂家的彩色涂料,铝镁锰屋面彩钢板不同批次的颜料也会有或多或少的色差。如果两个不同批次的颜料混合在一起,成品涂料会出现色差。
3、 彩色涂层的厚度不同
在我们的日常生活中,我们都知道,如果我们用彩笔反复画一个地方,颜色会变得更暗。同样,在铝镁锰屋面板的生产中,另一个造成色差的原因是,在着色过程中,由于涂层厚度不均匀,涂层颜色在厚膜厚度处加深,而在薄膜区域颜色较浅。造成涂膜厚度不均的主要原因是涂膜时,涂膜辊受力不均匀。

The main reasons for the color difference of aluminum magnesium manganese roof panels are as follows:

1、 Uneven viscosity of coating:
When the paint is used, due to the different colors of pigment viscosity is not the same, or due to uneven mixing, there will be caking. If the caking can not be removed in time, the pigment block will be squeezed during the coating pressure, resulting in defects or color changes of the aluminum magnesium manganese plate coating. The main reason for this is that the diluent volatilizes too fast during the use of the coating, resulting in adhesion If the coating on the top of the paint barrel is not used in time after the coating is mixed, the viscosity will be reduced due to precipitation.
2、 Mixing of different batches of coatings:
The common reason for color difference is to mix different batches of aluminum magnesium manganese roof panel coatings. Due to different batches of coating production operations, there will be more or less differences, especially when coating processing, the proportion of different batches will be different. Even if the color coating is from the same manufacturer, there will be more or less color difference between different batches of pigments. If two different batches of pigments are mixed, there will be color difference in the finished product coating.
3、 The thickness of color coating layer is different
In our daily life, we all know that if we paint a place repeatedly with a color brush, the color will become darker. Similarly, in the production of aluminum magnesium manganese roof panel, another reason for color difference is that due to the uneven thickness of the coating during coloring, the color of the coating is deepened in the place with thick film thickness, while the color is lighter in the thin film area. The main reason for the uneven thickness of the coating film is that the force on the film fixing roller is uneven when the film is applied.

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