3-Layer Polyethylene (FPE) Anti-Corrosion Epoxy Powder Coating

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3-Layer Polyethylene (FPE) Anti-Corrosion Epoxy Powder Coating

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3-Layer Polyethylene (FPE) Anti-Corrosion Epoxy Powder Coating Specification

Chemical Name
3-Layer Polyethylene (FPE) Anti-Corrosion Epoxy Powder Coating

CAS No
Mixture (Epoxy Resin, Hardener, Polyethylene)

Type
Thermosetting Epoxy Powder Coating

Standard
DIN 30670, EN 10288, ISO 21809-1

Grade
Industrial/Anti-Corrosion Grade

Usage
Anti-corrosion coating for pipelines and metal surfaces

Appearance
Smooth, uniform, colored coating (multiple colors available)

Physical Form
Powder

Pack Size
20 kg, 25 kg

Pack Type
Bag or Drum

Weatherability
High UV and weather resistance

Application Method
Electrostatic Spray/Extrusion

Dielectric Strength
> 25 kV/mm

Shore Hardness D
> 70

Film Thickness
1.8 mm to 3.7 mm (total thickness)

Service Temperature Range
-45C to 85C

Impact Resistance
> 6 J/mm

Adhesion to Steel
> 2.5 N/mm (pull-off)

Water Absorption
< 0.1%

Corrosion Protection
Excellent resistance against saline, acidic, and alkaline environments

Shelf Life
12 months in unopened original packaging, cool and dry conditions

Layer Structure
Fusion Bonded Epoxy (FBE) primer + Adhesive + Polyethylene (PE) outer layer

3-Layer Polyethylene (FPE) Anti-Corrosion Epoxy Powder Coating About

Product Usage:
Suitable for anti-corrosion coatings on various oil and gas pipelines.

Product Features:

Excellent adhesion to the substrate.
Appropriate gel time and interfacial properties, easily fusing with the intermediate adhesive layer to form a cohesive unit.
Provides protection over a wide temperature range, ensuring long-term corrosion resistance.
Superior high-temperature cathodic disbondment resistance.
High coverage area and transfer efficiency.
Low melting temperature, high reactivity, and high curing completion rate, with good mechanical properties.

Powder Coating Performance Parameters

Test Item	Technical Specification	Remarks
Appearance	Uniform color, no lumps	Visual inspection
Color	As per customer requirements	Color difference meter
Density (g/cm)	1.41.6	GB/T 4472
Particle Size Distribution	Residuals 3.0 at 150um, 0.2 at 250um	GB/T 6654
Volatile Content (%)	0.6	GB/T 6654
Gellation Time at 200C (s)	12	GB/T 6654-1986
Curing Time at 200C (min)	3	GB/T 23257-2009 Appendix A

Cured Powder Coating Performance Parameters

Test Item	Technical Specification	Remarks
Adhesion (Grade)	2	GB/T 23257-2009 Appendix C
Negative Electrode at 48h5C (mm)	8	GB/T 23257-2009 Appendix D
Negative Electrode at 305C (mm)	15	GB/T 23257-2009 Appendix D
Bending Resistance at -20C, 2.5	No cracks	GB/T 23257-2009 Appendix E

Application Parameters:

Parameter	Specification	Notes
Applicable Equipment	Frictional charging spray, corona electrostatic spray
Film Thickness	120-150um	Adjustable according to workpiece requirements

Health and Safety:

Property	Specification	Notes
Toxicity	Non-toxic	Safe for handling and application
Flammability	Non-flammable	Reduces risk in storage and use
Regulation	GB15607-1995	Follow safety protocols for coating operations

Precautions:

Item	Specification	Notes
Mixing Powders	Do not mix with other types
Outdoor Use	Not recommended	May cause fading and chalking
Surface Preparation	Oil-free, water-free, surface treatment to Sa21/2 level (GB/T8923), anchor pattern depth 40-100um, clean surface from dust and abrasives
Storage	Ventilated, dry, below 30C, away from heat sources, corrosive chemicals, and solvents, avoid strong light, maximum stack height 5 layers, keep packaging sealed
Curing Temperature	Preheat steel pipe surface to above 190C for better curing completion rate

Advanced Anti-Corrosion Technology

Featuring a 3-layer system of FBE primer, adhesive, and a protective polyethylene outer shell, this epoxy powder coating delivers outstanding corrosion resistance. The individual layers work together to form a robust barrier, ensuring long-term durability even in the most aggressive environments.

Versatile and Reliable Application

Engineered to be applied via electrostatic spray or extrusion, this coating provides uniform coverage and excellent adhesion to steel surfaces. Its adaptable application method ensures suitability for various pipeline and metal surface needs across industrial sectors.

Exceptional Mechanical and Environmental Performance

With a Shore Hardness D above 70, impact resistance exceeding 6 J/mm, and superior dielectric strength, this coating offers formidable protection. Its high weatherability, low water absorption, and resistance to UV exposure make it ideal for outdoor and extreme service conditions.

FAQ's of 3-Layer Polyethylene (FPE) Anti-Corrosion Epoxy Powder Coating:

Q: How is the 3-Layer Polyethylene (FPE) Anti-Corrosion Epoxy Powder Coating applied to metal surfaces?

A: The coating is applied using either electrostatic spray or extrusion methods, depending on the specific requirements and the geometry of the metal surface. This ensures a uniform, smooth finish and strong adhesion to pipelines or other metal structures.

Q: What advantages does the FPE coating provide compared to traditional single-layer coatings?

A: The 3-layer system offers multi-faceted protection: the FBE primer ensures robust adhesion, the adhesive promotes bond integrity, and the polyethylene outer layer delivers excellent resistance to corrosion, aggressive chemicals, and physical impacts, resulting in a significantly longer service life.

Q: When is this anti-corrosion coating recommended for use?

A: This coating is ideal for industrial and infrastructure projects where metal surfaces, especially pipelines, are exposed to saline, acidic, or alkaline environments. It's also suited for installations that require high levels of impact resistance and dielectric strength.

Q: Where can this coating be stored before use, and what is its shelf life?

A: The coating should be stored in its original, unopened packaging in a cool, dry place. When stored properly, the shelf life is 12 months from the date of manufacture.

Q: What is the process for achieving the standard film thickness during application?

A: During application, the powder is applied until the total film thickness reaches between 1.8 mm and 3.7 mm, as specified. Proper equipment calibration and process control are crucial to ensure consistent coating thickness and optimal corrosion protection.

Q: What benefits does this coating offer in terms of performance and protection?

A: It delivers high impact resistance, exceptional adhesion to steel surfaces (> 2.5 N/mm), minimal water absorption, and enduring protection against UV exposure, corrosion, and a wide variety of chemicals, ensuring long-lasting integrity for pipelines and metal structures.

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