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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:
- Very good adhesion with the substrate.
- Appropriate gel time and interface performance, easy integration with the intermediate layer and solidified as a whole.
- Protective effect in the lager temperature range, long-lasting anti-corrosion effect.
- The coating has excellent high temperature cathodic disbonding resistance.
- The powder area is large, the ratio of powder is high.
- Low melting temperature, high reactivity, high curing completion rate, good mechanical performance
Power Specification
Test Items | Technical Indicators | Test Method | |
Appearance | Even color, no caking | visual | |
Colour | As customer required | visual | |
Density g/m3 | 1.40-1.60 | GB/T 4472 | |
Volatile content % | ≤0.6 | GB/T 6554 | |
Particle size distribution % | 150μm Sieve the powder ≤3.0 | GB/T 6554 | |
250μm Sieve the powder ≤0.2 | |||
Gel time(s) 200 ℃ | ≥12 | GB/T 6554-1986 | |
Curing time (min) 200 °C | ≤3 | SY/T0314-2002 Appendix A | |
Thermal properties | homopolymer H J/g | ≥45 | SY/T0315-2005 Appendix B |
Glass transition temperature Tg2 °C | ≥95 | SY/T0315-2005 Appendix B | |
Coating Specification
Test Items | Technical Indicators | Test Method |
Adhesion | ≤2 | GB/T23257-2009 Appendix C |
48h 65℃cathodic disbanding resistance（mm） | ≤8 | GB/T23257-2009 Appendix D |
30d 65℃cathodic disbanding resistance（mm） | ≤15 | GB/T23257-2009 Appendix D |
counter bending（-20℃，2.5°） | no cracking | GB/T23257-2009 Appendix E |
Carried Standard: GB/T 23257-2009
Application Area: Oil, gas and other pipeline anticorrosion coating
Applicable process: Electrostatic Coating
Notes:
- 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.
- 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.
- 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.
3 PE anticorrosion epoxy powder coating
