Name: Single layer epoxy powder
Brand: Langfang Yanmei Chemical
Availability: InStock
Rating: 5 (1 reviews)

Description

Product Features

The product implements CSA Z245.20-2022 standard,which is a single layer of epoxy heavy anticorrosive powder coating with convenient construction, rapid curing and excellent performance. It is suitable for external anticorrosion protection of steel pipes and components, the operating temperature is-30℃ ~75℃, and the environment is underground or underwater environment. The coating has high crosslinking density and strong adhesion, preventing the corrosion of soil, hydrocarbons, acid and alkali salts, microorganisms, waste water and seawater, and the coating has good coverage and anti-corrosion resistance on welds, edges and special-shaped workpieces.

Application scope and characteristics

1.External corrosion prevention of steel pipes, pipe fittings, valves, pumps, containers, components, etc.

2.Compared with other types of coatings, environmental protection, easy to thick coating, good adhesion, with excellent cathode stripping and anti-corrosion properties.

3.It has the characteristics of mature process, wide application range, long anti-corrosion life, and wide operating temperature range (-30℃ ~75℃).The broken areas are easy to repair.

Method and dosage

1.Coating method: Electrostatic spraying,thermal spraying, fluidized bed, well immersion coating, roll coating.
2.Theoretical dosage: 150g / m²/ 100 μ m. Ordinary level，≥300μm，Strengthen the level，≥400μm.
3.Surface treatment: Sandblasting or Pelblasting.
4.Curing instructions:The powder coating is applied on the surface of 180~230℃ preheated workpiece, cured by waste heat, and generally does not need later heating. If the ambient temperature is very low or the heat capacity of the workpiece is insufficient, additional heating and curing is required.

Construction technology and repair technology references

1. Sandblasting or shot blasting to Sa2.5 level, anchor pattern depth 40~110μm, surface dust removal to near white leve.
2. Clean the dust and abrasives on the surface of the steel pipe.
3.The salt content on the steel pipe surface should not exceed 20mg/m².
4.The treated steel pipe should be protected from moisture and secondary pollution, and should be coated within 4 hours. If it exceeds 4 hours or rust or surface pollution occurs, it should be re-treated.
5.Workpiece preheating is generally controlled at 180~230°C , and must not exceed 275°C.
6.Apply the powder on the surface of the workpiece to adjust the required thickness.
7.After complete curing, the test shall be conducted when the workpiece drops below 95℃.
8.the leakage point repair, can be repaired with the company's two-component solvent-free liquid epoxy paint.

Qualification

Powder coating properties

No.	Test		Unit	Acceptance criteria	Test method
1	（230℃±3℃） Cure time		min	Meets manufacturer’s specification	CSA Z245.20-2022 12.1
2	（230℃±3℃） Gel time		s	Within 20% of manufacturer’s specified nominal	CSA Z245.20-2022 12.2
3	Moisture content		%	≤0.6	CSA Z245.20-2022 12.4
4	Particle size		%	3.0% maximum powder retained on 150 µm mesh and 0.2% maximum powder retained on 250 µm mesh	CSA Z245.20-2022 12.5
5	（20℃±3℃） Density		g/cm³	Meets manufacturer’s specification within 50 g/L	CSA Z245.20-2022 12.6
6	Thermal characteristics	△H	J/g	Meets manufacturer’s specification	CSA Z245.20-2022 12.7
6	Thermal characteristics	Tg2	℃	Meets manufacturer’s specification	CSA Z245.20-2022 12.7

Coating performance

No.	Properties		Unit	Requirements	Test method
1	Thermal characteristics	\|△Tg\|	℃	≤5	CSA Z245.20-2022 12.7
1	Thermal characteristics	Cure	%	≥95	CSA Z245.20-2022 12.7
2	Cathodic disbondment （65℃，24h,-3.5V）		mm	≤6.5	CSA Z245.20-2022 12.8
3	Cathodic disbondment （20℃，28d,-1.5V）		mm	≤8.5	CSA Z245.20-2022 12.8
4	Cathodic disbondment （65℃，28d,-1.5V）		mm	≤15	CSA Z245.20-2022 12.8
5	Cross-section porosity		级 Rating	1~3	CSA Z245.20-2022 12.10
6	Interface porosity		级 Rating	1~3	CSA Z245.20-2022 12.10
7	3°Flexibility （0℃/-18℃/-30℃）（Test temperature±3℃）		——	No cracking	CSA Z245.20-2022 12.11
8	1.5J Impact （－30℃±3℃）		——	No holidays	CSA Z245.20-202212.12
9	2.5° strained coating, 28 d cathodic Disbondment at 20℃ （20℃，28d，-1.5V)		——	No cracking	CSA Z245.20-2022 12.13
10	Adhesion （75℃，24h）		Rating	1~3	CSA Z245.20-2022 12.14
11	Adhesion （75℃，28d）		Rating	1~3	CSA Z245.20-2022 12.14

Safety, packaging, storage and transportation

This product is non-toxic, non-polluting and non-flammable, but measures should be taken to prevent large amounts of inhalation during operation.
Packing: Carton outer packing, lined with polyethylene bag, net weight 25±0.2kg.
Storage method: Store under dry, ventilated and clean conditions below 35°C, and keep away from fire and heating. After all packages are opened for use, the unused portion must be resealed to prevent moisture absorption from the air.
Warranty period: 12 months below 35°C.
Transportation: Avoid direct sunlight and rain. When the temperature is higher than 35°C, corresponding cooling measures should be taken.