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Epoxy dual-anti-corrosion powder coating for underground coal mines
- Commodity name： Epoxy dual-anti-corrosion powder coating for underground coal mines
- Product Description
-
Product Features1. Excellent adhesion to the substrate, with adhesion reaching level 2.2. The coating has good conductivity, effectively eliminating surface charge accumulation.3. An anti-electric field is formed between the coating and the metal interface, shielding electron transfer and protecting the metal.4. The coating has excellent high-temperature cathodic disbondment resistance.5. It has extremely strong anti-corrosion ability, chemical resistance, and solvent resistance.6. Good mechanical properties, extremely strong flexibility; the coating remains intact after cutting and grooving.7. Excellent anti-static, flame retardant, and smoke suppression properties.Epoxy Powder Performance Parameters
Item
Quality Index
Test Method
Test Results
Appearance
Uniform color, no agglomeration
Visual GB/T 1729-1979
Qualified
Density (g/cm³)
1.3-1.5
GB/T 4472
1.35±0.03
Non-volatile content (%)
≥99.4
GB/T 6554
99.90%
Spraying Area
\
Film thickness 300μm
2.29-2.39m²/kg
Gelation time 180℃ (s)
≤120s
GB/T6554-2003
90±5s
Cured Powder Coating Performance ParametersSerial Number
Test Item
Technical Index
Test Method
Test Results
1
Appearance
Uniform color, no bubbles, no cracks or shrinkage, slight orange peel is allowed
Visual Inspection
GB1729Qualified
2
Adhesion (Grade)
1~3
CJ/T 120-2008
Grade 2
3
Impact Resistance
No peeling, no cracking
CJ/T 120-2008
Qualified
4
Flattening Test (Flattening Ratio 4/5)
No cracks, no peeling
CJ/T 120-2008
Qualified
5
Surface Resistance (Ω.m)
106-109 (Ω.m)
MT 181-2012
≤106
6
Abrasion Resistance 1000g.1000 revolutions
≤20g
GB/T 1768-1979
Qualified
7
Bending Test
No peeling or cracking of the inner coating
CJ/T 120-2008
Qualified
8
Flame Retardant Performance
Flaming combustion time not exceeding 3 seconds, smokeless combustion (spark) not exceeding 20 seconds
MT 181-2012
Qualified
Implementation Standard: MT 181-2012/T 16906-97 etc.Application Areas: Anti-static and flame-retardant applications for gas ventilation and extraction pipelines in underground coal minesApplicable Processes: Electrostatic spraying, dipping, rolling, etc.Precautions:1. The steel pipe surface should be free of oil stains, loose rust, and moisture; the surface treatment quality should reach Sa2 1/2 grade (GB/T8923); the anchor pattern depth should be 50-90mm; dust and abrasives attached to the steel pipe surface should be cleaned by blowing; preheating: the steel pipe surface temperature should be controlled at 160-200℃, not exceeding 230℃.2. Unused powder should be stored in a ventilated, dry room with a temperature below 40℃, away from heat sources, corrosive chemicals and chemical solvents, and avoid strong light irradiation; the maximum stacking height should not exceed 4 layers; avoid long-term pressure, ensure the packaging box is sealed to prevent agglomeration and moisture, affecting the coating performance.3. In order to maximize the anti-corrosion effect of the epoxy coating, the coated steel pipe needs to be secondary heat cured.
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Address: Qichun County, Huanggang City, Hubei Province, China
Li Shizhen Industrial Park, North Huan Road
Tel: 86-13801790539 (Mr. Luo)
Email: tedluo@163.com