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Single-Layer Epoxy Anti-Corrosion Powder Coating (External Coating)

Product Introduction:

This product is formulated using epoxy resin, functional curing agents, and a meticulous design. It features high reactivity, strong adhesion, high cross-link density, and excellent resistance to chemicals, solvents, and cathodic disbondment. The coating also offers superior flexibility, impact resistance, and other performance characteristics.

Product Features:

Excellent adhesion to the substrate.

Smooth surface with high gloss.

Strong resistance to permeation and corrosion.

High surface hardness and dense coating, providing good resistance to plant root penetration.

Excellent resistance to high-temperature cathodic disbondment.

Low melting temperature, high reactivity, and high curing completion rate.

Powder Coating Performance Parameters

ItemQuality IndicatorTest Method
Appearance Uniform color, no lumps Visual inspection
Color As per customer requirements —————
Density (g/cm³) 1.3-1.5 GB/T 4472
Non-Volatile Content (%) ≥ 99.4 GB/T 6554-1986
Magnetic Substance Content (%) ≤ 0.002 GB/T 2482-1986

Cured Powder Coating Performance Parameters

No.Test ItemTechnical IndicatorTest Method
1 Appearance Smooth, uniform color, no bubbles, cracks, or pinholes; slight orange peel allowed Visual inspection
2 Adhesion (Grade) 1-3 SY/T 0315-2005
3 Cathodic Disbondment Resistance (24h) (mm) ≤ 6.5 SY/T 0315-2005
Cathodic Disbondment Resistance (28d) (mm) ≤ 8 SY/T 0315-2005
Cross-Section Porosity 1-4 SY/T 0315-2005
Bonding Surface Porosity 1-4 SY/T 0315-2005
4 Flexibility (3°) No cracks SY/T 0315-2005
Volume Resistivity ≥ 1×10¹³ GB/T 1410
5 Electrical Strength (MV/m) ≥ 30 GB/T 1408.1
6 Impact Resistance (1.5J at -30°C) No leakage SY/T 0315-2005
Chemical Resistance Qualified SY/T 0315-2005
8 Abrasion Resistance (falling sand method) ≥ 3 SY/T 0315-2005
9 Salt Spray Test (1000h) No change in coating GB/T 1771-1991

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