In the vast field of building materials, color steel tiles are widely used in various types of buildings due to their excellent performance. The performance of color steel tiles is closely related to its coating. Today we will take a deep look at one of the common coatings-polyester coating.
1. Basic characteristics of polyester coating
Polyester coating is a widely used type of coating for color steel tiles. Its main component is polyester resin, which is coated on the surface of color steel tiles through a special process to form a film with protective and decorative effects.
2. Significant advantages
High cost performance: The cost is relatively low. For large-scale construction projects using color steel tiles, it can effectively control the material cost, which makes it popular in ordinary industrial plants, warehouses, and civil buildings that are more cost-sensitive.
Rich colors: With strong color matching ability, a variety of colors can be given to color steel tiles. Whether it is fresh and elegant tones or bright and eye-catching colors, it can be easily achieved, which greatly meets the appearance design needs of different architectural styles and adds a unique visual charm to the building.
Good adhesion: The polyester coating fits the color steel tiles very closely, and the adhesion performance is excellent. In daily use, it is difficult to have problems such as peeling and peeling, which ensures that the coating can play a long-term and stable role and maintain the appearance integrity of the color steel tile.
Processing-friendly: In the production and processing of color steel tiles, the polyester coating shows good adaptability. Whether it is bending, stamping or other forming operations, the coating can follow the deformation of the plate well, and will not be easily broken or damaged due to processing, which provides strong support for the efficient production and convenient installation of color steel tiles.
Basic protection: In ordinary indoor environments or mildly corrosive outdoor environments, polyester coatings can provide a certain degree of protection for color steel tiles. It can block the direct contact between water vapor and oxygen in the air and the color steel plate, delay the rust and corrosion rate of the color steel plate, and extend the service life of the color steel tile.
3. Limitations
Weather resistance shortcoming: Once exposed to harsh outdoor environments for a long time, the weaknesses of the polyester coating gradually emerge. Continuous exposure to ultraviolet rays, frequent rain erosion, and erosion by wind and sand will cause the coating to fade and powder. Generally speaking, its service life is mostly 7-10 years, which is relatively short compared to some high-end coatings.
Weak chemical resistance: Polyester coatings have poor tolerance to chemicals such as acids, alkalis, and salts. In special environments with chemical corrosion risks such as chemical plants and coastal areas, the coating is easily corroded and damaged by chemicals, thereby weakening the protective performance of color steel tiles and shortening their service life.
Poor hardness and wear resistance: The hardness of polyester coatings is relatively low, which leads to its shortcomings in wear resistance. When the surface of color steel tiles is rubbed and collided, the coating is prone to scratches and wear, which not only affects the beauty of color steel tiles, but may also further reduce its protective effect and affect its service life.
Difficult to clean and resist stains: The surface of polyester coatings is easy to absorb dust, stains, etc., and it is relatively difficult to clean. Especially for light-colored color steel tiles, once stained, they will be particularly obvious, greatly affecting the overall beauty of the building.
Polyester-coated color steel tiles have their own advantages and limitations. When choosing, it is necessary to comprehensively consider factors such as the building's use environment, budget, and expected service life to determine whether it is suitable for a specific construction project.
