Product Introduction:
This product features high reactivity andexcellentadhesion, high crosslinking density, with the coating filmdemonstratingoutstandingchemical resistance, solvent resistance, cathodic disbondment resistance, superiorflexibility, impact resistance, and other exceptional properties.
Product Use:
Municipal water supply, drainage, sewage, circulating water, chemical industry, thermal power, and othertransportation pipelines.
Product Features:
1. Excellent bonding strength with the substrateExcellentadhesion;
2. The coating film has good surface leveling and high gloss.
3. Featuresoutstandingresistance to penetration and corrosion protection;
4. High surface hardness and strong coating density;
5. The coating exhibits excellent resistance to high-temperature cathodic disbondment;6. Excellent mechanical properties with exceptional flexibility;
7. Low melting temperature, high reactivity, and high curing completion rate.
Powder Characteristics:
Powder Coating Performance Parameters
experimental project | technical indicators | remark |
appearance | Uniform color, no lumps | visual inspection |
color | According to customer requirements | colorimeter |
Density (g/cm2) | 1.3~1.5 | GB/T 4472 |
particle size distribution | 150um sieve residue ≤ 3.0 250um sieve residue ≤ 0.2 | GB/T 6554-1986 |
Non volatile matter content (%) | ≤99.4 | GB/T 6554-1986 |
Magnetic content (%) | ≥0.002 | GB/T 6554-1986 |
Gelation time (s) | ≤180s (180°C) ≤120s(200°C) ≤60s (230°C) | GB/T 6554-1986 |
Horizontal liquidity (mm) | 22~28 | GB/T 6554-1986 |
Performance parameters of powder coating film after solidification
experimental project | technical indicators | remark |
appearance | Flat, uniform color, no bubbles, no cracking or shrinkage, mild orange peel allowed | visual inspection |
Adhesion (grade) | Levels 1-3 | SY/T 0442-1997 |
Cathodic peel resistance 65 ° C48h (mm) | ≤8 | SY/T 0413-95 |
Bending resistant type (40) | No cracks: | SY/T 0442-1997 |
Electrical emphasis (MV/m) | >30 | GB/T 1408-1989 |
Corrosion resistance to chemical media | 10% HCL at room temperature for 90 days 10% H2S04 at room temperature for 90 days Room temperature 90d3.5% NaCl 10% NaCH at room temperature for 90 days | qualified | GB/T 1763-1979 |
Oilfield wastewater 80 ° C 90d Crude oil 80 ° C90d Gasoline at room temperature for 90 days Diesel at room temperature for 90 days Kerosene at room temperature for 90 days | qualified | GB/T 1733-1993 |
Wear resistance 1000g (1000 revolutions per minute) | | ≤20g | GB/T 1768-1979 |
Salt spray test (1000h) | | No change in coating film | GB/T 1771-1991 |
Flattening experiment (flattening ratio 4/5) | | No cracking | CJ/T 120-2008 |
Implementation Standard:
SY/T 0442-97 "Technical Standard for Fusion Bonded Epoxy Powder Internal Coating of Steel Pipelines'
Curing Conditions:
Curing temperature: 200~230°C/3~1.5min (medium frequency heating curing)Note: The recommended curing conditions are all for workpiece temperature. Temperature deviations may affect theperformance of the coating or prevent it from being fully realized.
Construction parameters:
1. Applicable equipment - Friction charging spraying, corona electrostatic spraying, suction coating, dip coating roller
coating, etc.
2. Coating thickness Can be adjusted between 150~450um according to workpiece requirements.
Health and Safety:
1. This product is non-toxic and non-flammable, but please comply with the GB15607-1995 Safety Regulations forCoating Operations when using it.
Precautions:
1. This product is not recommended for outdoor use of workpieces, as it may cause fading, chalking, and otherphenomena;
2. The steel pipe surface should be free of oil stains and moisture, with surface treatment quality reaching Sa21/2grade (GB/T8923). The anchor pattern depth should be 40-100 um, and dust and abrasives adhering to the steel pipesurface should be blown clean. Preheating: temperature should be controlled between 180-230°C;
3. The powder should be stored indoors in a well-ventilated, dry area with a temperature below 30°C, away from heatsources, corrosive chemicals, and chemical solvents, and protected from strong light exposure. The maximumstacking height should not exceed five layers. Avoid prolonged pressure and ensure the packaging is tighty sealed toprevent clumping and moisture absorption, which could affect fluidization performance.
4. To ensure thorough curing of the epoxy coating and optimal corroston resistance, it is recommended to preheatthe steel pipe surface to a temperature above 200°C, which will significantly improve the curing completion rate.
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