Product Main

Specifications

Epoxy powder coating
 
Main composition
Mainly made of epoxy resin and curing agent, leveling agent, pigment, filler and other addictives. it has super chemical resistance and mechanical properties. It can be used in painting those metal products that have special requirement of corrosion resistance, electric insulativity and pliability. Directly outdoor using is not to be suggested.
 
Product processing
Material blending – melting – hot extrusion – sheeting – cooling – chipping – grinding – sieving -- packing
In order to maintain the relative stability of product, material blending time shall follow the standard to avoid the chemical interreaction.
 
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
 
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: 1.1~1.8g/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: 180℃/15 minutes
Or 160℃/20 minutes, 200℃/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
 
Film performance
 
Test Item
Test standard and Method
 
Test index
Impact resistance
GB/T 1732 -1993
ISO6272
50kg·cm
Adhension(cross-cut)
GB/T 9286 - 1998
ISO2409
Class 0
Flexibility
GB/T 6742-1986
ISO1519
2mm
Pencil hardness
GB/T 6739-1996
ISO2815
1H-2H
Cupping test
GB/T 9753-1988
ISO1520
6mm
Salt spray resistance
GB/T 1771-1991
ISO7253
>400 Hours
Heat & humidity resistance
GB/T 1740-1979
ISO6270
>500 Hours,film gloss slightly lose
Note: 1. Above test are using 0.30mm thickness degreased, rust removed cold rolling steel plate, film thickness is 60-80um.
2. Film performance may slightly decrease with gloss decrease.
 
Package
Carton packing with liner of double polyethylene bags, Net weight 20kg each.
 
Storage and shippment
The product must be stored in ventilated, dry and clean room with temperature below 25℃, Keep it away from fire, heat,and direct sunlight. Outdoor stacking is prohibited. Avoid rains and exposure to sunshine during shipment. The period of validity is 6 month under above condition. Expired products can not be used unless re-testing result meets the utilization standards.
 
 
Health and safety
There are no hazardous ingredients contained. Wearing anti-dust mask and goggles to avoid inhalation of dust. Try best to avoid longtime contact with powder. The coating adhesive to the skin can be washed with soap.