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What characteristics should exterior wall coatings have?
Classification： company news
release time： 2022-05-20 00:00
In the decoration of building exterior walls, traditional materials such as veneer bricks were mostly used in China in the past. However, although veneer materials such as ceramic tiles and stone materials have good durability, their shortcomings are also obvious: 1. The wall is discontinuous; 2. . The color is not easy to be unified; 3. It will peel off after a long time, and it will hurt people when it falls; 4. The gap between the tiles is not waterproof, etc. Since the technical quality of coatings has reached a very high level, the service life can reach 15 years or even higher, its rich color and texture and economical cost have attracted more and more attention. At present, in architectural decoration, whether it is a construction unit or a designer, it has gradually been keen to use paint as external decoration. Exterior wall coatings are exposed to the external environment and are subject to various tests of nature. Therefore, their design requirements are obviously higher than that of interior wall coatings. What characteristics should exterior wall decorative coatings have? Generally, exterior wall coatings pay more attention to the following: Item properties:
1. Elasticity and crack resistance: In order to level the exterior walls of buildings, thick mortar is usually applied, and there are many repair points. These mortars may crack due to the stress generated by the cement curing process or due to changes in weather; In addition, the old wall may also cause wall cracks due to structural loosening. If the coating does not have the ability to resist cracking, it will cause cracking and lose the protection ability and aesthetics of the wall.
2. Color lasting: Exterior wall coatings are exposed to hot sun and rain, and the color continuity of the coating is severely tested. The energy of ultraviolet rays can usually denature and fade certain pigments. Therefore, paints with long-lasting color are more popular.
3. Air permeability: Like interior wall coatings, exterior wall coatings must also have air permeability, which is even higher than that of interior wall coatings.
4. Water resistance: A must-have function of coatings and other exterior wall decoration materials: waterproof. Coatings that are not water resistant quickly lose their water resistance.
5. Freeze-thaw resistance: This is very important in the cold northern regions. The freeze-thaw cycle will cause the coating to crack and affect various performance indicators.
6. Anti-pollution: Air pollution is getting more and more serious, and the exposed paint surface will quickly become dirty. It is an urgent need to develop functional coatings with no static electricity, no stickiness, dense surface and no dust absorption.
7. Strong adhesion: The adhesion is required to be super strong, otherwise the coating will fall off or peel and crack due to various weather or changes in the building structure.
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Dongguan Xubang Paint Co., Ltd.
Company address: 2nd Floor, Building 8, Yonglida Science and Technology Park, Guantai Road, Dongguan City
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Xubang New Materials
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