Epoxy powder coating
Epoxy powder coating were the first commercially available thermoset materials and they are the most commonly used of the thermosetting powders today. They are available in a wide range of formulations for thick film functional applications and thin film decorative applications. They provide excellent toughness, chemical resistance, corrosion resistance and flexibility and can be formulated to produce attractive coatings of varying gloss and surface textures. The primary drawback with epoxies is that they will chalk within a few months when subjected to UV radiation. For this reason they are rarely used for outdoor applications.
Main feature
Produce a uniform, smooth and durable appearance
Excellent corrosion resistance, electric insulation
Good stability when stored in the normal temperature
Excellent mechanical property(impact resistance, hardness, flexibility, adhension etc.)
Enhanced coating efficiency due to easily charged particles produced from epoxy resin
Prone to over-baking or yellowing if curing temperature is too high or curing time too long.
Application
Pipeline industry: anti-corrosion pipeline, Oil pipeline, sewage pipe, vessel water pipe, gas pipe and valves etc.
Metal furniture: Steel furniture, documents cabinets etc.
Kitchen utensils: gas cylinder, gas cooker, kitchen ventilator etc.
Construction industry: door lock, rebar and steel moulding plate
Electrical industry: Electronic spare parts, winding coil, and insulation coating of the rotator etc.
Instrument industry: casing of apparatus and meters
Car industry: Automotive underhood and underbody parts
Products series
Available in standard curing and lower temperature curing
Available in multi-colors, different gloss level such as high gloss ( above 90°), flat gloss( 70-80°), semi gloss ( 10-60°), matt( below 10°), particular color and gloss is made according to customers requirements.
Available in various kinds of art textures, such as sandy, wrinkle, lanose grain, hammer tone, metallic effect etc.
Physical property
Specific gravity: 1.11.8g/cm3 (varied with different color and gloss)
Particle size: average 10~38um, proportion 10~84um > 90%, it can be adjusted if special requirement is put forward to us in advance.
Curing temperature
Standard type: 180oC/15 minutes
Or 160oC/20 minutes, 200oC/10 minutes if customer require
Pre-treatment
The overall quality of the coating system is largely dependent on the type and quality of the pre-treatment. The recommended types of pre-treatment for the most frequently used substrates are:
|
Aluminium |
Chromate conversion |
|
Steel |
Zinc phosphate |
|
Zinc coated steel |
Zinc phosphate or chromate conversion |
Coating method
Electrostatic spray gun
Tribo gun
Electrostatic fluidized bed
Fluidized bed