RAL1005 honey yellow electrostatic thermoset powder coating with
high mechanical property
Powder coatings are applied to metal substrates to form highly
durable and attractive finishes. They are manufactured and applied
without the use of organic solvents; thus, they are highly
desirable from an ecological standpoint. Most of the current
interest in industrial powder coating technology is in formulations
based on thermosetting resin binders, predominantly epoxies and
polyesters (saturated types with carboxyl or hydroxyl functional
groups). Epoxies are preferred for their overall physical
properties, while polyesters exhibit better outdoor weathering
properties. This report focuses on powder coatings based on
thermosetting resins and discusses only the electrostatic spray
method of application. Most of the interest in powder coatings and
their best prospects for growth involve these technologies. The
major thermosetting powder coatings are based on four chemistries:
epoxy, polyester, urethane and acrylic.
Thermoset Pros
- More resistant against high temperature.
- Hard and rigid.
- Thin to thick wall capability.
- Excellent appearance.
- High mechanical property.
- Cost effective.
- Excellent dimensional stability.
Thermoset Cons
- Not recycled.
- Much more difficult to surface finish.
- Cannot be remolded or reshaped.
Product Details |
Type | Epoxy Polyester Powder Coating |
Gloss Level | Gloss 88% |
Surface Finish | Texture |
Powder Property |
Appearance | Fine powder |
Particle Size | Average 32-40μm |
Specific Gravity | 1.3-1.5g/cm3 |
Coverage | 7-8 square meter per Kg at 80μm film thickness |
Application Recommendation |
Applicatoin | Corona |
Application Voltage | 60-90 KV |
Gun to Component Distance | 15-30 CM |
Film Thickness | 80-90μm |
Curing Temperature | 190℃(Object temperature) for 15 minutes |
Powder Coated Film Mechanical Properties |
Adhesion | Cross-cut (2mm), no loss of adhesion |
Impact Resistance | Direct & Indirect 50kg/cm |
Pencil Hardness | 2H |
Flexibility | 7mm Mandrel |
Bending Test | 3mm |
Powder Coated Film Chemical Resistance |
Salt Spray Test | 5% NaCl Solution for 1000 hours - No change |
Acid Resistance | 5% HCL for 48 hours dip test - No change |
Alkali Resistance | 5% NaOH for 48 hours dip test - No change |
