为什么购买彩涂板时需要考虑环境因素？

天物彩板专注彩涂卷行业17年——购买彩涂板时需要考虑环境因素_v820型彩钢板生产价格请拨打网站上方电话咨询

建筑物的安全系数主要考虑风荷载和雪荷载。虽然它与彩涂钢板的力学性能有关，但更多地与压型钢板的形状、厚度以及板与板之间的连接有关。

然而，定量描述一个地区的腐蚀环境相对困难。影响彩涂钢板腐蚀的因素很多。影响不同区域腐蚀环境的因素有：高温、涂层软化、腐蚀介质易粘附和渗透到基体中、高温水中含氧量增加、一定温度下腐蚀速率加快。
湿度：基体腐蚀和切口处的加工损伤属于电化学腐蚀。低湿度不易形成腐蚀性电池（即电化学电路）。昼夜温差：温差大易凝结，在裸露金属上形成电偶腐蚀条件。此外，较大的温差也会导致涂层频繁冷热变形，加速涂层的老化和松动，外部腐蚀介质容易渗入基体。
日照时长和强度：日照是一种电磁波，根据能量和频率可分为三种类型：γX射线、X射线、紫外线、可见光、红外线、微波和无线电波。微波和无线电波能量低，不与物质相互作用。红外线也是一种低能光谱。它只能拉伸或弯曲物质的化学键，而不能破坏它们。可见光给人以丰富的色彩。紫外光谱属于高频辐射，具有比低能光谱更大的破坏力。众所周知，皮肤黑斑和皮肤癌是由太阳紫外线引起的。
同样，紫外线也能破坏物质的化学键并使其断裂。这取决于紫外光的波长和物质的化学键强度。X射线可以穿透，γ辐射可以破坏化学键，产生对有机物致命的自由带电离子。幸运的是，太阳里几乎没有光。因此，从上面可以看出，日照时间和强度会影响涂层的结构稳定性，特别是在紫外线较强的区域。
降雨和降雨酸度：高降雨酸度当然不利于抗腐蚀性，但降雨具有双重作用。对于坡度较大的墙板和屋面板，雨水可以清洗钢板表面，并冲走表面腐蚀产物。然而，对于坡度较低且排水不良的屋顶板，高降雨量容易加剧腐蚀。
风向和风速：它的功能类似于水，经常伴随着它。这是对材料连接部件的测试，因为风会导致连接部件松动，雨水会渗入建筑物内部。腐蚀性沉积物：如氯离子和二氧化硫，加速腐蚀，主要发生在沿海地区和工业污染严重的地区（如电厂、冶炼厂等）。

The safety factor of buildings is mainly considered for wind and snow load. Although it is related to the mechanical properties of color coated steel plate, it is more related to the shape and thickness of profiled steel plate and the connection between plates.

However, it is relatively difficult to quantitatively describe the corrosion environment in an area. There are many factors affecting the corrosion of color coated steel plate. The factors affecting the corrosion environment in different areas are: high temperature, softening of coating, easy adhesion and penetration of corrosion medium into the matrix, increased oxygen content in high-temperature water, and accelerated corrosion rate at a certain temperature.
Humidity: matrix corrosion and machining damage at the notch belong to electrochemical corrosion. Low humidity is not easy to form corrosive batteries (i.e. electrochemical circuits). Temperature difference between day and night: large temperature difference is easy to condense, forming galvanic corrosion conditions on bare metal. In addition, the large temperature difference will also lead to frequent cold and hot deformation of the coating, accelerate the aging and loosening of the coating, and the external corrosive medium is easy to penetrate into the matrix.
Sunshine duration and intensity: sunshine is an electromagnetic wave, which can be divided into three types according to energy and frequency: γ X-rays, X-rays, ultraviolet rays, visible light, infrared rays, microwaves and radio waves. Microwave and radio waves have low energy and do not interact with substances. Infrared is also a low-energy spectrum. It can only stretch or bend the chemical bonds of substances, not destroy them. Visible light gives all rich colors. Ultraviolet spectrum belongs to high-frequency radiation and has greater destructive power than low-energy spectrum. It is well known that skin dark spots and skin cancer are caused by the sun's ultraviolet rays.
Similarly, ultraviolet light can also destroy chemical bonds of substances and break them. This depends on the wavelength of ultraviolet light and the chemical bond strength of the substance. X-rays can penetrate, γ Radiation can destroy chemical bonds and produce free charged ions that are fatal to organic matter. Fortunately, there is little light in the sun. Therefore, it can be seen from the above that the sunshine time and intensity will affect the structural stability of the coating, especially in the area with strong ultraviolet rays.
Rainfall and rainfall acidity: high rainfall acidity is certainly not conducive to corrosion resistance, but rainfall has a dual role. For wall and roof panels with large slope, rainwater can clean the steel plate surface and wash away the surface corrosion products. However, for roof slabs with low slope and poorly drained parts, high rainfall is easy to aggravate corrosion.
Wind direction and speed: its function is similar to water, and it is often accompanied by it. This is a test of the material connection part, because the wind will cause the connection part to loosen and the rain will penetrate into the interior of the building. Corrosive sediments: such as chloride ion and sulfur dioxide, accelerate corrosion and mainly occur in coastal areas and areas with serious industrial pollution (such as power plants, smelters, etc.).