The pvdf painted aluminium sheet is also known as fluorocarbon painting colour coated aluminum sheet. Fluorocarbon coatings are PVDF resins, mainly referring to vinylidene fluoride homopolymers or copolymers of vinylidene fluoride and other small amounts of fluorine-containing vinyl monomers. Fluorine/carbon bonds are incorporated in the chemical structure of the hydrofluoric acid base. The stability and firmness of this chemical structure make the physical properties of fluorocarbon coatings different from ordinary coatings. In addition to the abrasion resistance and impact resistance in terms of mechanical properties, pvdf painted aluminum sheet has excellent performance, especially in harsh climates and environments, it shows long-term fading resistance and UV resistance. After high-temperature baking to form a film, the molecular structure of the coating is tight and has super weather resistance. Fluorocarbon coatings can be divided into traditional fluorocarbon and nano-fluorocarbon coatings according to the surface film structure.
Analysis of the advantages of pvdf painted aluminium sheet:
1, Excellent anti-corrosion performance
Thanks to excellent chemical inertness, the paint film is resistant to acids, alkalis, salts and other chemical substances and various chemical solvents, providing a protective barrier for the aluminum sheet substrate; the paint film is tough, pvdf coated aluminium sheet has high surface hardness , impact resistance, buckling resistance, good wear resistance, showing excellent physical and mechanical properties.
2, Maintenance-free, self-cleaning
Fluorocarbon coating has extremely low surface energy, surface dust can be self-cleaned by rain, excellent hydrophobicity (maximum water absorption rate is less than 5%) and oil repellency, extremely small friction coefficient (0.15 — 0.17 ), will not stick to dust and scale, and has good anti-fouling properties.
3, Strong adhesion
PVDF coating has excellent adhesion on the surface of aluminum, copper, stainless steel and other metals, polyester, polyurethane, vinyl chloride and other plastics, cement and composite materials, basically showing that it is suitable for attaching to any material characteristics. High decorativeness - in a 60-degree gloss meter, it can achieve a high gloss of more than 80%.
4, Ultra-long weather resistance
The coating of pvdf painted aluminium sheet contains a large number of F--C bonds, which determines its super stability, no pulverization, no fading, and a service life of up to 20 years. It has a longer service life than any other type of coating. For excellent performance.