| 功能性涂层彩钢板 |
| 添加时间:2018/6/25 16:57:05 浏览次数: |
目前现在还有很多功能性彩涂钢板,如抗菌彩涂、抗静电彩涂、隔热彩涂、自洁彩涂等。这些产品的开发是以满足用户特殊需求为目的的,但是有时侯不能兼顾彩涂产品其他性能,如目前市场上自洁彩涂钢板就是这样,经过近几年的使用,我们发现自洁彩涂钢板不能有效地自洁,反而对涂层的耐久性产生损害。因为目前自洁涂层原理就是利用涂层的高亲水性,即使钢板上有结灰,通过雨水渗透到灰尘下并将灰尘带走达到自洁的目的。而理论上亲水涂层的水渗透到基板也一定比较容易,因此,彩涂钢板的耐膜下腐蚀性能就相对降低了。另外,检测自洁彩涂钢板的自洁性能的接触角时我们发现,在室外曝晒不到半年,其接触角就和普通聚酯彩涂无异,从这个角度讲自洁彩涂的自洁性只能维持半年左右。我们现在的雨水有时也不太干净,有时看到钢板下雨后并没有自洁反而留下一条脏的水线。最后,还有一点要说明的就是现在越来越多的墙面板采用横板结构,这样,自洁钢板所剩下的理论上的效果也没有了。因此,用户选择功能性彩涂钢板是一定要明确自己的真正需求。
At present, there are many functional color coated steel plates, such as anti-bacterial color coating, antistatic color coating, heat insulation color coating, self cleaning color coating and so on. The development of these products is to meet the special needs of users for the purpose, but sometimes can not take into account other properties such as color coated products, currently on the market of self-cleaning color coated steel plate is, through the use of the past few years, we found that the self-cleaning color coated steel plate can not effectively self-cleaning, and durability of the coating damage. Because the principle of self-cleaning coating is to make use of the high hydrophilicity of the coating, even if there is ash on the steel plate, it can be penetrated to the dust under the rain and take away the dust to achieve the purpose of self-cleaning. In theory, the water permeable to the substrate of the hydrophilic coating is also relatively easy. Therefore, the corrosion resistance of the color coated steel plate is relatively lower. In addition, when detecting the contact angle of self cleaning color coated steel plate, we found that the contact angle is different from that of ordinary polyester coating in less than half a year after outdoor exposure. From this point of view, the self cleaning property of self cleaning color coating can only last for half a year. The rain is not so clean at times, and sometimes it doesn't leave a dirty waterline when it rains. Finally, there is one point to note is that now more and more by the transverse wall panel structure, so that there is no self cleaning plate with the rest of the theoretical effect. Therefore, the user's choice of functional color coated steel plate is to make sure of its real needs. |
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