Epoxy-phenolic coated aluminum foil finds extensive application across various industries, including offshore wind power generation, chemical plants, electroplating, livestock breeding, sludge drying, agricultural crop drying, steel mills, and drilling platforms.
The coating leverages the superior corrosion resistance of epoxy resin, which is further enhanced by the incorporation of a specific proportion of phenolic resin. Unlike conventional anti-corrosion materials, epoxy-phenolic coatings do not employ pigments for coloration. Instead, the natural golden hue is achieved through the thermochromic properties of phenolic resin.
The manufacturing process entails stringent temperature control and precise coating thickness requirements. The plasticity of the coating ensures that the fins remain intact during the stretching process in stamping operations. Uniform coating thickness is ensured through roll-coating technology, thereby guaranteeing the heat transfer efficiency of air conditioning heat exchangers.
After nearly a decade of service in offshore wind power applications and 6–7 years in sludge drying facilities, our epoxy-phenolic aluminum foil has demonstrated no signs of corrosion. The fourth-generation epoxy-phenolic aluminum foil developed by our company features increased coating thickness and optimized production processes.The specific technical parameters are as follows:
Technical Parameters
- Coating Thickness: The coating thickness on both sides is ≥18μm.
- Adhesion Testing:
– The coating does not fall off after a 50kg impact.
– It passes the cross-cut test without peeling.
– It passes the 0T test without peeling.
- Chemical Corrosion Resistance:
– Immersion in 30% sodium hydroxide solution for 24 hours without corrosion.
– Immersion in a solution of 20% copper sulfate + 10% hydrochloric acid for 24 hours without corrosion.
- Salt Fog Resistance: Acid salt spray (ASS) test for over 500 hours without corrosion.
Application Fields
Epoxy-phenolic coated aluminum foil has a very wide range of applications, mainly including the following areas:
- Offshore Wind Power Generation: Used for the anti-corrosion protection of offshore wind power equipment, withstanding harsh marine environments with high salt fog and high humidity.
- Chemical Plants: Suitable for anti-corrosion of chemical equipment, such as pipelines and storage tanks, to withstand the erosion of various chemical media.
- Electroplating Industry: Used for the protection of electroplating equipment to prevent corrosion from electroplating solutions.
- Livestock and Poultry Breeding: Used for the anti-corrosion of breeding equipment, preventing corrosion from animal manure and feed.
- Sludge Drying: Used for the anti-corrosion of sludge drying equipment, withstanding high temperatures, high humidity, and corrosive gases.
- Agricultural Crop Drying: Used for the anti-corrosion of drying equipment, preventing corrosion from crop residues.
- Steel Mills and Offshore Drilling Platforms: Used for the anti-corrosion of steel production equipment and offshore drilling platforms, withstanding high temperatures and high salt fog environments.
- Air Conditioning Industry: Used for the anti-corrosion of air conditioning heat exchanger fins, improving heat exchange efficiency. A hydrophilic layer can also be added to prevent water accumulation between fins.
Market Advantages
- Long Service Life: After nearly 10 years of verification by offshore wind power customers and 6-7 years of use by sludge drying manufacturers, no corrosion has occurred, demonstrating excellent durability.
- Environmental Friendliness: No pigments are added, reducing chemical pollution during the production process and meeting environmental requirements.