Application industries, powder Coating

1. Product Overview

This product is formulated using novolac epoxy resin and incorporates a proprietary conductive polymer material developed by our company. It combines the advantages of both intrinsic conductivity and doped conductivity, and is specially designed for conductive anticorrosion powder coating applications.

The surface resistance of the cured coating film can reach below 10⁵ Ω, effectively eliminating static electricity accumulation in gas drainage pipelines, preventing electrostatic sparks, and improving operational safety.

The product features high reaction activity, excellent adhesion, high cross-linking density, and outstanding performance in chemical resistance, solvent resistance, cathodic disbondment resistance, flexibility, and impact resistance.

2. Product Features

(1) Excellent bonding strength with the substrate.

(2) The first application of proprietary conductive materials, integrating intrinsic conductivity and doped conductivity technologies.

(3) Excellent electrical conductivity of the coating film. The surface resistance can reach 10⁵ Ω, effectively eliminating surface charge accumulation.

(4) A reverse conductive layer is formed at the interface between the coating film and the metal substrate, blocking electron transfer and protecting the metal surface.

(5) The coating film provides excellent resistance to high-temperature cathodic disbondment.

(6) Low melting temperature, high reaction activity, high curing completion rate, and excellent mechanical properties.

(7) Added high-efficiency flame retardants provide certain flame-retardant performance.

3. Powder Coating Performance Parameters

Item	Quality Requirements	Test Method
Appearance	Uniform color, no agglomeration	Visual inspection
Density (g/cm³)	1.3–1.7	GB/T 4472
Non-volatile Content (%)	≥99.4	GB/T 6554
Gel Time (s)	≤120 seconds at 180°C; ≤60 seconds at 230°C	GB/T 6554-1986

4. Performance Parameters of Cured Powder Coating Film

No.	Test Item	Technical Requirements	Test Method
1	Appearance	Smooth surface, uniform color, no bubbles, cracks, or shrinkage holes	Visual inspection
2	Adhesion (Grade)	1–3	CJ/T 120-2008
3	Impact Strength	No peeling or cracking	CJ/T 120-2008
4	Surface Resistance (Ω·m)	≤1×10⁶ Ω·m	GB/T 16906-97
5	Abrasion Resistance (1000 g / 1000 cycles) (mg)	≤20	GB/T 1768-1979
6	Flame Retardancy		MT 181-88
	Average flaming combustion time	≤3 s	MT 181-88
	Maximum flaming combustion time	≤10 s	MT 181-88
	Average flameless combustion time	≤20 s	MT 181-88
	Maximum flameless combustion time	≤60 s	MT 181-88
7	Bend Test	No cracks or peeling in the inner coating	CJ/T 120-2008
8	Flattening Test (Flattening Ratio 4/5)	No cracks or peeling	CJ/T 120-2008

Applicable Standard: MT 181-88

5. Precautions

(1) The steel pipe surface must be free from oil contamination and moisture. Surface preparation quality should reach Sa2½ grade (GB/T 8923). The recommended anchor profile depth is 40–90 μm. Dust and abrasive residues attached to the steel pipe surface must be completely removed by air blowing. The preheating temperature should be controlled at 180–250°C and must not exceed 275°C.

(2) The product should be stored indoors in a well-ventilated and dry environment at temperatures below 30°C, away from heat sources, corrosive chemicals, and chemical solvents. Avoid direct exposure to strong sunlight. The maximum stacking height should not exceed 4 layers. Avoid prolonged compression and keep packaging sealed to prevent powder caking and moisture absorption, which may affect product performance.

(3) To ensure complete curing of the epoxy coating film and achieve optimal anticorrosion performance, it is recommended that the steel pipe surface temperature be preheated to above 200°C to improve the curing completion rate.

6. Applicable Application Processes

Suitable for:

Electrostatic spraying

Dip coating

Roller coating

7. Application Areas

Specially designed for antistatic anticorrosion coating of gas ventilation and gas extraction pipelines in coal mine shafts.

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