Analysis of Common Water - borne Wood Coatings in Summer Decoration

Home painting, the water-based wood paint construction, in the high-temperature climate sometimes have some unusual problems: such as paint film wrinkling, poor film adhesion, paint cracking, paint white, etc., affect the progress of construction and decorative effect . This requires the construction of the construction of the product before the construction process, construction requirements have a clear understanding and skilled construction skills to ensure that the best decorative effect under high temperature weather. The following analysis of the abnormal conditions of this high temperature weather:

First, the film wrinkles

Some construction workers in the use of water-based wood coatings for flat coating, take a one-time thick coating method, the results of fullness is excellent, but the film surface wrinkling phenomenon. The cause of the problem is the thick coating of water-based paint film at high temperatures, the film surface of the rapid drying of the film and thick inner layer is drying slowly in the drying process of paint flow caused by tension difference, resulting in the final film surface uneven , That wrinkles. Therefore, the construction, not a thick coating, especially not to direct dumping method, should still take thin coating to ensure uniform coating dry film, to film formation effect.

Second, the film adhesion is poor

Summer high temperature, air humidity in some areas and large. After the general water-based wood paint construction, you will find the coating is not strong bond between the layers, resulting in poor adhesion phenomenon occurs between the layers peeled off each other, or even tear the whole piece can be as tearing. The direct cause of the poor adhesion between the paint film layer is the painter construction, the layer is not polished. As the painter in a hurry, in the next process, without grinding, but directly on the brush on a film, coupled with high temperatures, wet film and dry film interface to form a solid layer of the time required to make Adhesion is affected. Therefore, requiring construction workers in the construction of high temperature weather, between each floor to be fully polished to enhance adhesion, while construction arrangements in the morning and evening is appropriate to ensure that the inherent quality of the product can be reflected.

Third, the film cracking

This phenomenon is also more common in summer construction. As in the construction process, the paint film is too thick, leading to the surface layer of dry film speed, and thick inner layer is slow drying, a direct result of primer cracking and so on. At the same time, we should pay attention to the quality of sheet metal, it is recommended to buy a good stability of the plate.

Fourth, the paint layer white

Mainly the construction of the environment humidity is too large, the construction process is too thick and other reasons caused the coating. Because the summer high temperatures, air humidity in some areas larger. The dry time of the lacquer layer is accelerated with the increase of the temperature, but the working time is slow; the painter may neglect the working time during the construction process, and immediately after the lacquer layer is dry, another lacquer. Resulting in the bottom of the paint is not completely dry. In rainy days or high humidity weather, prone to paint the phenomenon of white.

In short, the use of water-based wood in the summer decoration process, we should focus on grasping the thickness of the film during the construction process, the proposed thin coating several times, in addition, to master the construction of the intermittent time, must paint the hard work , Then the next process construction. To ensure the construction quality of waterborne wood coatings.

Why do you want to fully dry wood before brushing waterborne wood paint?

A: The wood usually contains a certain amount of water, wood moisture content is too high or inadequate drying will affect the coating effect of wood coatings, it is possible to produce some of the drawbacks of the film, such as: 1. Film due to water outside the release, the course of time cracking, uplift peeling, 3. The film was white mist, opaque, dull. 4. Paint film prone to bubbles, pinholes. 5. Film produced fish-eye splits, shrink yellowing. In order to get a perfect film effect, it is recommended to ensure that the wood before the construction is fully dry, usually requires wood moisture content of not more than 10%.