Introduction:
This product adopts special epoxy resin, curing agent, food-grade fillers configuration, this product has high reactivity, has strong adhesive force, high crosslinking density, the coating has excellent chemical resistance, solvent resistance, resistance to cathodic stripping, excellent flexibility, impact resistance and other properties.
Feature:
1. Very good adhesion with the substrate.
2. Good leveling, high gloss coating surface,
3. Extremely strong ability of corrosion and penetration resistance.
4. High surface hardness, coating density
5. The coating has excellent high temperature cathodic disbonding resistance.
6. Low melting temperature, high reactivity, high curing completion rate
7. Good mechanical performance, strong flexibility
8. Confim to protective materials in drinking water safety evaluation standard
Power Specification
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Test Items
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Technical Indicators
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Test Method
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Appearance
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Even color, no caking
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visual
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color
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As customer required
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———
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density(g/cm³)
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1.3-1.5
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GB/T 4472
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Particle size distributor
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150μm Sieve the powde≤3
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GB/T 6554-1986
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250μm Sieve the powde≤0.2
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GB/T 6554-1986
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Non-volatile matter content (%)
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≥ 99.4
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GB/T 6554-1986
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Gel time(s)
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≤ 180s (180℃)
≤ 120s (200℃)
≤ 60s (230℃)
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GB/T 6554-1986
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Magnetic matter content(%)
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≤ 0.002
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GB/T 2482-1986
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Level of liquidity(mm)
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22~28
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GB/T 6554-1986
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Coating Specification
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Test Items
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Technical Indicators
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Test Method
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Appearance
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smooth, uniform color, no bubble , no cracking and sinkhole, allow light crack
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visual
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adhesion(Grade)
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1~3
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SY/T 0442-1997
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cathodic disbonding resistance 65℃48h(mm)
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≤8
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SY/T 0413-95
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Bending resistance(40)
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No cracking
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SY/T 0442-1997
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Electric strength(MV/m)
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≥ 30
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GB/T 1408-1989
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Impact strength
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≥ 11
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SY/T 0442-1997
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Resistance to chemical corrosion medium
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qualified
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GB/T1763-1979
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Abrasion resistance 1000g.1000turn
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≤20g
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GB/T 1768-1979
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Salt spray test(1000h)
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No chance
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GB/T1771-1991
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Flatten test(flatten ratio4/5)
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No cracking
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CJ/T 120-2008
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Water immersion test
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qualified
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GB/T 17219-1998
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Carried Standard: CJ/T 120-2008, GB/T 17219-1998
Application Area: Special for municipal drinking water pipe
Applicable process: Electrostatic spraying and dip coating, etc
Notes:
1. Steel surface should be no oil and water, surface quality should reach Sa2 1/2 level (GB/T8923), anchor pattern depth 50-90mm, clean dust and abrasive attached to the steel surface, preheat, control temperature in 180－230℃.
2. Product should be stored in ventilated, dry, indoor temperature below 30 ℃, 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. To best curing epoxy coating, best anti-corrosion, suggested preheating tube surface temperature in more than 200℃, in order to better improve the curing completion.
4. Shall not be used mixed with other anticorrosive powder coatings and recycling power, when the color change, thoroughly clean spraying equipment, to ensure security of drinking water quality conform to the hygiene standards.