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Electrostatic Spray Interior Corrosion Protection Pure Epoxy Powder Coating
It is a kind of thermosetting pure epoxy heavy anticorrosive powder coating specially designed for the pipeline industry. It is applied to the inner wall surface of preheated steel products. The powder is fused and solidified into a uniform and dense coating film, which can prevent the corrosion of corrosive hydrocarbons, acid and alkali salts, microorganisms, industrial wastewater and seawater. The coating has good coverage and adhesion on welds, special-shaped workpieces and steel bars, and is very suitable for coating long distance pipelines. It is a kind of heavy anticorrosive powder coating with convenient construction, fast curing and excellent performance.
GENERAL TYPES
Textures include sand grain, hammer, silk pattern, sand textured, marble,metallic, multi-color.
PHYSICAL PROPERTIES
CURING CONDITIONS
180 °C ~ 200 °C (work piece temperature), 10-15 minutes
AVERAGE COVERAGE
8-12 square meters / kg, thickness 60 microns (100% of the powder coating utilization rate)
PACKING
Outside carton lined with two layers of polyethylene bags, each containing 20 kg net weight.
STORAGE AND TRANSPORT
Stored in less than 30 °C, ventilated, dry, clean room, not near the fire source, heating, avoid direct sunlight, the product in the transport should be to prevent rain, sun, prolonged sun exposure.Storage products in line with the above conditions, since the date of production, effective storage period is 6 months.Over the storage period may be re-tested and the results were consistent with, can still be used.
HEALTH AND SAFETY
Coating powder is a non-toxic products, but should be avoided in the course of inhalation of dust.Proposed operators wear appropriate dust mask, glasses.If possible, try to avoid long-term skin contact with powder coating
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Mechanical property |
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Testing items |
Standards and methods |
Inspecting index |
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Impact strength |
GB/T1732-1993, AS3715 2.8 |
>50kg/cm |
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Bending resistance |
GB/T1185-88, AS1580 402.1, ISO9227 |
Pass 2-5 millimeters |
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Adhesion CHECKED TEST |
GB/T9286-88,2mm Cross cut, ISO2409 |
Pass100/100, passes 0 levels |
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Cupdrawing:Erichsen, ISO1520 |
Erichsen, ISO1520 |
Pass 3-7 millimeters |
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Pencil hardness |
GB/T6739-86, Mitsubishi |
Pass H-2H |
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Chemical resistance and weather resistance |
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Salt spray test |
GB/T1771-91,500 hours |
The cross section of corrosion less than 2MM |
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Hot and damp resistance test |
GB/T17740-79(89),1000 hours |
Without air bubbles, loses the light slightly |
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Acid resistance |
10% CH3COOH, 240 hours |
Without air bubbles, the surface without damage |
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Alkali resistance |
10% NaOH, 240 hours |
Without air bubbles, the surface without damage |
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Heat resistance |
200degree,1 hour |
The color change is lower than E=1.5 |
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Solvent resistance |
MEK24 hours soaked in solvent-free |
Without air bubbles, the surface without damage |
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Uvioresistant |
QUV-313,500 hours |
Gloss higher than 80% lower than the Munsell color change level |
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Water tolerance of |
2 hours |
No bubble, not falling, losing light |
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