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What are the functions of waterborne coatings?
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| Release time：2023.02.22 Browsing： |
Water-based coatings have only appeared in the paint market in recent years, presumably everyone has heard of it, the use of water-based coatings are also many, after all, this kind of paint is not only very convenient to use, but also a water-based solvent environmental protection coating, will not cause any harm to the occupants at all, so people love it for granted. However, water-based coatings will have some problems in use, of course, its advantages far outweigh the defects. Let's talk about it for everyone.
First, the color of the substrate or the overall color is uneven when the multi-channel coating is still visible, that is, the so-called exposed bottom phenomenon, the main reasons are as follows:
1. The latex paint is mixed with too much water and the coating film is too thin;
2. The base surface is too light and the water absorption is too low or the primer is too water-repellent, and the dosage cannot go up; The base surface is concave and convex, usually the convex paint film is too thin, etc. Solution (corresponding to the cause): first mix water according to the requirements (requirements on the manual); Secondly, to ensure that the base surface is flat, of course, we must pay attention not to press too much light, because moderation can be; Then the base surface is applied with a roller, and a low coating that is almost the same color as the top coat but slightly lighter is used, and of course it can also be a medium coat.
Second, after coating with water-based paint, the latex paint immediately flows downward, resulting in uneven coating surface, for the following reasons:
1. The paint film is coated too thickly, the solution: use the homogenization plate to evenly and evenly prepare the drum of the dipping material, which can effectively control the thickness of the wet film.
2. Latex paint is over-mixed with water, and if you want to solve this problem, then you need to mix water in strict accordance with the requirements clearly specified in the manual.
3. The humidity of the construction environment is too large, the temperature is too low, or the base layer is too wet. Solution: Avoid cold environment construction, relative humidity is less than 85%, and the base layer should be dried after construction.
The above is to introduce to you some problems in the use of water-based coatings and their corresponding solutions, Xiaobian hopes that you can fully grasp the relevant solutions through this article, so that you can use this paint more handy in the future, and the coating efficiency will be improved.
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