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(使用环境)——彩涂板的耐蚀性因素之二

返回列表 来源: 发布日期: 2019.11.19

(使用环境)——彩涂板的耐蚀性因素之二

影响彩涂板耐腐蚀性能的因素很多,包括彩涂板的种类、厚度、种类、级别和厚度、使用环境条件、施工后的机械加工、运输、储存、施工、安装和维护等。今天,我们主要讨论基板、涂层类型和应用环境对彩涂板耐腐蚀性能的影响!
使用环境


什么基材的彩涂板耐腐蚀性能好_天物静电喷涂彩板
主要从以下几个方面阐述了使用环境对彩钢板耐蚀性的影响:
一当温度较高时,涂层会软化,腐蚀介质容易粘附,基体和高温水中的氧含量会增加,在一定温度下腐蚀速度会加快。
2。 彩涂板湿陷处的基体腐蚀和加工损伤属于电化学腐蚀,在低湿度下不易形成腐蚀电池(即电化学电路)。
三。温差大, 彩涂板易在外露金属上凝结形成电偶腐蚀的条件。此外,温差大也会导致涂层冷热变形频繁,加速涂层的老化和疏松,外部腐蚀性介质容易渗透到基体中。
四。太阳紫外光谱属于高频光,具有比低能谱更大的破坏力。X射线能穿透,γ射线能破坏化学键,产生自由电荷离子,对有机物有致命的危害。因此,从上面可以看出,太阳光的时间和强度影响涂层的结构稳定性,特别是在紫外线较强的区域。
5个。大雨和高酸度肯定会腐蚀钢铁。但降雨对大坡度的墙板和屋面板有双重作用,可以清洗钢板表面,洗去表面腐蚀;但对于坡度较低的屋面板和排水不良的部位,降雨较大,容易引起腐蚀。
6。风向与水相似,而且经常聚在一起。这是对材料连接部分的测试,因为风会使连接部分松动,雨水会渗入建筑物内部。
7号。腐蚀性腐蚀物,如氯离子、二氧化硫等,加速腐蚀,大部分腐蚀于沿海地区和工业污染严重的地区(如发电厂、冶炼厂等)。
8个。朝向建筑物的方向和坡度会影响日照时间,从而影响涂层的耐久性。坡度也影响腐蚀介质或粉尘在钢板上的沉降时间。

【天物彩板】一直专注于高端色板定制领域。根据使用环境、设计寿命、结构造型和客户的独特需求,个性化定制可以满足客户的多样化需求,提高下游客户产品的竞争力。我们始终坚持“以质量为本,以信为本”的经营理念,致力于生产高品质环保节能彩板。产品涉及PVDF氟碳彩钢板、PVDF氟碳彩钢板、彩涂钢卷性能及应用、HDP高耐候彩钢板、SMP硅改性聚酯彩钢板、PE普通聚酯彩钢板、抗静电彩钢板、抗菌彩钢板、保温彩钢板等18个系列板、自洁彩板等。


There are many factors that affect the corrosion resistance of the color coated plate, including the type, thickness, type, level and thickness of the coating, the environmental conditions for use, and the mechanical processing, transportation, storage, construction, installation and maintenance after construction. Today, we mainly talk about the influence of substrate, coating type and application environment on the corrosion resistance of color coated plate!

Use environment
The influence of using environment on corrosion resistance of color plate is mainly described from these points:
1. When the temperature is high, the coating will soften, the corrosive medium will be easy to adhere, the oxygen content in the substrate and high-temperature water will be increased, and the corrosion speed will be accelerated under a certain temperature.
2. The substrate corrosion at the humidity notch and processing damage belongs to electrochemical corrosion, and the corrosion battery (i.e. electrochemical circuit) is not easy to form at low humidity.
3. The condition that the temperature difference is large and easy to condense and form galvanic corrosion on the exposed metal. In addition, large temperature difference also leads to frequent cold and hot deformation of the coating, which will accelerate the aging and loosening of the coating, and the external corrosive medium is easy to penetrate into the substrate.
4. Sunlight UV spectrum belongs to high frequency ray, which has more destructive power than low energy spectrum. X-ray can penetrate, γ - ray can break chemical bond and produce free charged ions, which are fatal to organic matters. Therefore, it can be seen from the above that the time and intensity of sunlight affect the structural stability of the coating, especially in the areas with strong ultraviolet.
5. Heavy rain and high acidity will definitely corrode steel. However, the rainfall has a dual effect on the wall panel and roof panel with large slope, which can clean the steel plate surface and wash away the surface corrosion; however, for the roof panel with low slope and the part with poor drainage, the rainfall is large and easy to cause corrosion.
6. The wind direction is similar to the water, and often comes together. It is a test for the connection part of materials, because the wind will cause the connection part to loosen, and the rainwater will penetrate into the interior of the building.
7. Corrosives corrosives, such as chloride ions, sulfur dioxide, etc., accelerate the corrosion, and most of them occur in coastal areas and areas with serious industrial pollution (such as power plants, smelters, etc.).
8. The orientation and slope towards the building affect the sunshine time, thus affecting the durability of the coating. The slope also affects the settling time of corrosion medium or dust on the steel plate.
Tianwu color board has always been focusing on the field of high-end color board customization. According to the use environment, design life, structural molding and customers' unique needs, personalized customization can meet customers' diversified needs and improve the competitiveness of downstream customers' products. We always adhere to the business philosophy of "based on quality, committed to the letter" and are committed to the production of high-quality environmental protection and energy-saving color plate. The products involve 18 series, such as PVDF fluorocarbon color plate, PVDF fluorocarbon color plate, color coated steel coil performance and application, HDP high weather resistant color plate, SMP silicon modified polyester color plate, PE ordinary polyester color plate, antistatic color plate, antibacterial color plate, thermal insulation color plate, self-cleaning color plate, etc.

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