Introduction: a thermosetting epoxy modified heavy-duty powder coatings
specially designed for epoxy anti-corrosion coating steel, this
product adopts imported two step method special epoxy, part
functional epoxy, match up dedicated anticorrosive epoxy firming
agent, unique compound design and practical by the authoritative
department detection, has good reactivity, strong adhesion
strength, good toughness and bending resistance, excellent chemical
resistance, solvent resistance, cathodic disbonding resistance,
impact resistance and other properties.
Feature:
- Very good adhesion with the substrate.
- Coating density, continuous brightness, resistance to penetration,
less funnelled
- Coating with excellent cathodic disbonding resistance and high
electrical insulation
- Coating with high bond strength of concrete, strong bond stress.
- Good toughness, no cracking for bending
6. Low melting temperature, high reactivity, high curing completion
rate, good mechanical properties
7. Versatility, low powder consumption
8. Steel wire drawing in the powder coating can be reduced or
avoided
Power Specification
| Test Items | Technical Indicators | Test Method |
| Appearance | Even color, no caking | visual |
| Colour | As customer required | visual |
| density(g/cm³) | 1.2-1.5 | GB/T 4472 |
| average grain diameter | 30µｍ-50µｍ | Laser laser particle size analyzer |
| Particle size distribution % | 150μm Sieve the powder | ≤3.0 | GB/T 6554 |
| 250μm Sieve the powder | ≤0.2 |
| volatile matter content (%) | ≤ 0.6 | GB/T 6554 |
| magnetic material content(%) | ≤ 0.002 | GB/T 2482-86 |
| Gel time(s) | 200℃ ≤ 20S | GB/T 6554 |
| Curing time(s) | 230℃ ≤ 60S | GB/T 6554 |
Coating Specification
| Test Items | Technical Indicators | Test Method |
| Appearance | smooth,uniform color, no bubble , no cracking and sinkhole, allow light crack | visual |
| cathodic disbonding resistance | ≤2mm | GB/T 25826-2010 |
| continuity | No visible holes, gaps, cracks, and visual defects | GB/T 25826-2010 |
| pliability(40mm) | no visible cracks, fracture, coating peel off | GB/T 25826-2010 |
| bonding strength | Coating on steel bond strength is not less than 85% of uncoated
steel | GB50152 |
| impact strength | No coating material fracture | GB/T 25826-2010 |
| Resistance to chloride penetration | ＜1×10-4M | GB/T 25826-2010 |
| Chemical resistance | No softening, no bubbles, good adhesion and no pores, no sag | GB/T 25826-2010 |
| abrasive resistance | ≤100 mg | GB/T 1768-1979 |
| salt spray test(800h) | ≤3mm | GB/T 25826-2010 |
Carried Standard: JG 3042-1997; GB/T 25826-2010
Application Area: Can be widely used in Bridges, ports, airports, buildings,
basements, high-speed rail, etc.
Applicable process: Electrostatic Coating
Notes:
1. Steel surface scale remove clean, reveal metal color; Steel
surface roughness handling quality standard, appropriate for 50-70
- mm; Derusting grade level Sa2 1/2 (GB/T8923, no chloride attached
on steel surface. Preheating: temperature should be controlled in
220-245 ℃.)
2. Product should be stored in ventilated, dry, indoor temperature
below 27 ℃, away from heat, corrosive chemicals and chemical
solvents, avoid bright light, the maximum stack height should not
exceed 4 layers, avoid prolonged pressure, ensure airtight box. In
case the clot and damp affects the fluidization performance.
3. As the product has high reactivity, it is recommended that
storage period for 27 ℃ under 3 months for the best. Exceed shelf
life, should be test its performance first.
