Introduction:
This product adopts linear phenolic epoxy resin, design and manufacture according to GB/T23257-2009. High reactivity, high crosslinking density, coating adhesion, and coating with excellent adhesion, chemical resistance character, cathodic disbonding resistance, good impact resistance.
Feature:
1. Very good adhesion with the substrate.
2. Appropriate gel time and interface performance, easy integration with the intermediate layer and solidified as a whole.
3. Protective effect in the lager temperature range, long-lasting anti-corrosion effect.
4. The coating has excellent high temperature cathodic disbonding resistance.
5. The powder area is large, the ratio of powder is high.
6. Low melting temperature, high reactivity, high curing completion rate, good mechanical performance
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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Colour
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As customer required
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visual
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Density g/m3
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1.40-1.60
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GB/T 4472
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Volatile content %
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≤0.6
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GB/T 6554
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Particle size distribution %
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150μm Sieve the powder ≤3.0
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GB/T 6554
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250μm Sieve the powder ≤0.2
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Gel time(s) 200 ℃
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≥12
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GB/T 6554-1986
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Curing time (min) 200 °C
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≤3
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SY/T0314-2002 Appendix A
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Thermal properties
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homopolymer H J/g
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≥45
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SY/T0315-2005 Appendix B
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Glass transition temperature Tg2 °C
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≥95
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SY/T0315-2005 Appendix B
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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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Adhesion
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≤2
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GB/T23257-2009 Appendix C
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48h 65℃cathodic disbanding resistance(mm)
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≤8
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GB/T23257-2009 Appendix D
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30d 65℃cathodic disbanding resistance(mm)
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≤15
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GB/T23257-2009 Appendix D
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counter bending(-20℃, 2.5°)
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no cracking
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GB/T23257-2009 Appendix E
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Carried Standard: GB/T 23257-2009
Application Area: Oil, gas and other pipeline anticorrosion coating
Applicable process: Electrostatic Coating
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.
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 170℃, in order to better improve the curing completion.