(DPS) Dobbeltlags epoxy-korrosionsbestandig pulverlakering

Surface Finish Options Overview

Product Introduction:
This dual-layer epoxy powder coating system is carefully formulated using special epoxy resins and functional curing agents. The base layer, like other epoxy anti-corrosion powder coatings, offers excellent anti-corrosion properties. The outer layer, while maintaining anti-corrosion properties, enhances protective performance. Compared to a three-layer PE structure, it offers a lower comprehensive anti-corrosion cost.

Produktbrug:
Suitable for complex anti-corrosion environments, especially pipelines crossing through mountainous, river, and hilly areas.

produktegenskaber:

Excellent adhesion between the base material and the epoxy layers.Strong resistance to permeation and corrosion with high curing completion rate.High hardness of the outer coating, dense coating, scratch-resistant, and good resistance to plant root penetration.Excellent high-temperature cathodic disbondment resistance and superior mechanical properties.

Pulver ydeevne:

Pulverlakering ydeevneparametre

Test Item	Tekniske specifikationer	Bemærkninger
Udseende	Ensartet farve, ingen klumper	Visuel inspektion
Partikelstørrelsesfordeling	Rester ≤4.0 ved 150 µm, ≤0.2 ved 250 µm	Q/CNPC 38-2002 Appendix C
Flygtigt indhold (%)	≤ 0.6	Q/CNPC 38-2002 Bilag B
Gellation Time at 205±3°C (s)	≥12	Q/CNPC 38-2002 Appendix A
Hærdningstid ved 230°C (min)	≤ 3	SY/T 0315-2005
Indhold af magnetisk stof (%)	≤ 0.002	GB / T 6570

Ydelsesparametre for hærdet pulverlakering

Test Item	Tekniske specifikationer	Bemærkninger
Udseende	Smooth, uniform color, no bubbles, no cracks, allows slight orange peel	Visuel inspektion
Adhæsion (grad)	1-2	SY/T 0315-2005
Negative Electrode at 24h (mm)	≤ 6.5	SY/T 0315-2005
Negative Electrode at 28d (mm)	≤ 8	SY/T 0315-2005
Cross-sectional Crack Rate	1-4	SY/T 0315-2005
Coating Surface Porosity Rate	1-4	SY/T 0315-2005
Bending Resistance (3°)	Ingen revner	SY/T 0315-2005
Volume Resistivity	≤1*10¹³	GB / T 1410
Electric Strength (MV/m)	≥30	GB / T 1408.1
Impact Resistance (1.5J at -30°)	No leakage points	SY/T 0315-2005
Kemisk modstand	Kvalificeret	SY/T 0315-2005
Wear Resistance (Abrasion Method)	≤ 3	SY/T 0315-2005
Saltspraytest (1000 timer)	Coating shows no change	GB / T 1771-1991

Udførelsesstandard:
Q/CNPC 38-2002 “Technical Specification for Double Layer Fusion Bonded Epoxy Powder Coating on Steel Pipes”

Hærdningsbetingelser:

Ejendom	Specification	Bemærkninger
Temperatur	200-230°C i 3-1.5 minutter	Medium-frequency heating recommended

Anvendelsesparametre:

Parameter	Specification	Noter
Anvendeligt udstyr	Friktionsopladningsspray, korona elektrostatisk spray
Film Tykkelse	250-500um	Justerbar i henhold til emnets krav

Opbevaringsperiode:

The product can be stored for 6 months in dry conditions below 30°C.The used coating must be re-sealed immediately to prevent moisture absorption affecting performance.Packaging: 20kg paper boxes lined with plastic bags.