1.What are the main types of color coatings for galvanized color-coated corrugated sheets?
Polyester coating, silicone-modified polyester coating, high-durability polyester coating, fluorocarbon coating, acrylic coating, polyurethane coating
2.What are the characteristics of polyester coating?
Cost-effective: It is the most common type of coating with low cost and is suitable for ordinary environments with low requirements for weather resistance.
Good mechanical properties: It has certain flexibility and impact resistance, which is convenient for sheet processing and forming (such as bending and stamping).
Rich colors: It can be mixed with a variety of colors to meet the decorative needs of the building exterior.
Moderate weather resistance: It is stable in a dry and non-corrosive environment, but it may fade and powder if exposed to ultraviolet rays, rain and other environments for a long time.
3.What are the characteristics of silicone-modified polyester coating?
Improved weather resistance: Adding silicon to the polyester coating makes it more resistant to UV rays and weathering than ordinary PE coatings, slowing down the fading and chalking speed.
Good high temperature resistance: It can withstand higher temperatures (such as below 120°C), suitable for scenes with heat dissipation requirements.
Higher hardness: The surface is more wear-resistant and has stronger scratch resistance, but the flexibility is slightly lower than that of PE coating. Applicable scenarios: Buildings with certain requirements for weather resistance (such as rainy areas in the south, roofs with strong direct sunlight), industrial equipment shells, etc.
4.What are the characteristics of high-durability polyester coating?
Strong weather resistance: Through improved resin formula and process, the UV resistance and aging resistance are significantly improved, and the service life is 2-3 times longer than that of ordinary PE coating.
Excellent color retention: When exposed to the outdoors for a long time, the color retention is high and it is not easy to fade or change color. Balance of flexibility and hardness: It has both good processing and high surface hardness. Applicable scenarios: Buildings with high requirements for appearance and durability (such as commercial complexes, exhibition halls, municipal projects), coastal areas or environments with severe industrial pollution.
5.What are the characteristics of fluorocarbon coating?
Top weather resistance: Fluorocarbon resin has a stable molecular structure, strong resistance to UV rays and corrosion (acid rain, salt spray), and is one of the best weather-resistant coatings at present, with a service life of more than 20 years.
Self-cleaning: The surface is smooth and not easy to absorb dust and pollutants, and it can be kept clean by rain.
Excellent chemical resistance: It has strong resistance to chemicals such as acids, alkalis, and solvents, and is suitable for highly corrosive environments.
High cost: Due to the complexity of raw materials and processes, the price is much higher than other coating types.
Applicable scenarios: high-end buildings (such as airports, office buildings, museums), coastal high salt spray areas, chemical industry/metallurgy and other highly corrosive industrial environments.