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如何选择彩钢板涂层颜色?

返回列表 来源: 发布日期: 2020.01.09

如何选择彩钢板涂层颜色?

天物彩板专注彩板行业16年——宝钢彩涂板一级经销商,更多宝钢彩卷销售电话_宝钢彩涂卷最新报价请拨打网站上方电话咨询

您好,我是天物小编。你知道彩钢板吗?今天,我想为您做一个详细的分析,希望能对您有所帮助。

宝钢彩卷销售电话_宝钢彩涂卷最新报价_天物彩板
彩钢板涂料的颜色选择:颜色的选择主要是考虑与周围环境的匹配和业主的爱好。但从应用技术上看,浅色涂料有很大的选择余地。可以选择具有优异耐久性的无机颜料(如二氧化钛)。此外,该涂料具有较强的热反射能力(反射系数是深色涂料的两倍),夏季涂料本身的温度相对较低,有利于延长涂料的使用寿命。
另外,即使涂料变色或粉化,浅色涂料与原色的对比度也很小,对外观的影响也不显著。但大多数深色(尤其是较亮的颜色)采用有机色,在紫外线照射下容易褪色,3个月内就会变色。对于彩涂钢板,涂层与钢板的热膨胀率通常不同,特别是金属基体与有机涂层的线膨胀系数差异较大。当环境温度变化时,基体与涂层之间的界面会产生膨胀或收缩应力,若不适当释放,涂层会开裂。
此外,国内市场有两个选择错误:
一是我国存在大量白色引物。使用白色底漆的目的是减少面漆的厚度,因为普通建筑的防腐底漆是黄绿色的(所以有铬酸锶颜料),而且必须有足够的面漆厚度。
二是建筑工程同一工程采用不同厂家、不同批次的彩涂钢板,在施工中似乎颜色相同。但经过几年的阳光照射,不同涂料生产厂家的颜色变化趋势不同,造成严重的色差。例子太多了。即使是同一供应商的产品,也强烈建议同一项目同时订购,因为不同涂料供应商的产品可能用于不同批次,这就增加了色差的可能性。

Hello, I'm Xiaobian. Do you know color steel plate? Today, I'd like to make a detailed analysis for you, hoping to help you.

Color selection of color steel plate coating: the selection of color is mainly to consider the matching with the surrounding environment and the owner's hobbies. However, from the perspective of application technology, there is a large choice of light color paint. Inorganic pigments with superior durability (such as titanium dioxide) can be selected. Moreover, the paint has strong thermal reflection ability (the reflection coefficient is twice that of dark paint) and the temperature of the coating itself in summer Relatively low, which is beneficial for the coating life extension.
In addition, even if the coating is discolored or powdered, the contrast between the light color coating and the original color is small, and the effect on the appearance is not significant. However, most of the dark colors (especially the more bright colors) adopt organic colors, which are easy to fade when exposed to ultraviolet light, and change color in a short period of 3 months. For color coated steel plate, the thermal expansion rate of coating and steel plate is usually different, especially the linear expansion coefficient of metal substrate and organic coating is quite different. When the ambient temperature changes, the interface between substrate and coating will have expansion or contraction stress, if not properly released, the coating will crack.
In addition, here are two mistakes of choice in the domestic market:
One is tat there are a large number of white primers in China. The purpose of using white primer is to reduce the thickness of the top coat, because the corrosion-resistant primer for normal buildings is yellow green (so there is strontium chromate pigment), and it must have enough thickness of the top coat.
The other is that color coated steel plates of different manufacturers and batches are used in the same project for construction engineering, which seems to have the same color in construction. But after several years of sunlight, the color change trend of different coating manufacturers is different, resulting in serious color difference. There are too many examples. Even products from the same supplier are strongly recommended to be ordered at the same time for the same project, because products from different coating suppliers may be used for different batches, which increases the possibility of color difference.

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