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:

1. Very good adhesion with the substrate.

2. Coating density, continuous, brightness, resistance to penetration, less funnelled

3. Coating with excellent cathodic disbonding resistance and high electrical insulation

4. Coating with high bond strength of concrete, strong bond stress.

5. 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.