Main inspection items for powder coating film
Main inspection items for powder coatings The main inspection items for powder coatings include film color, appearance, thickness, gloss, adhesion, softness, bending test, impact resistance, cupping test, scratch test, Pencil hardness, wear resistance, chemical resistance, heat and humidity resistance, neutral salt spray, aging (manual acceleration) and weather resistance evaluation. The test methods for these items are shared with the film test methods for common materials. In addition, for special powder coating varieties or special requirements of powder coating products, including cathode stripping test, coating porosity, scoring hardness, cut resistance, bending cracking, dielectric constant, volume resistance, Resistance to voltage, tensile strength, elongation, heat-resistant color wheel, solvent vapor resistance, corner coverage and other inspection items.
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In GB6554-86 "Electrical Vision Method Powder Coating Test Method" includes visual inspection. Thickness measurement, plant porosity, scoring scale, puncture resistance, color wheel impact strength, cupping test (recommended instrument : cupping tester), bending cracking, electrical strength, dielectric loss tangent and relative dielectric constant, volume resistance after water immersion, temperature and electric resistance test, chemical resistance, solvent resistance, gas resistance, resistance Inspection method for inspection of heat, corner coverage and other items.
In the oil and gas industry standard SY/T0315-97 "Steel Pipeline No. Epoxy Powder External Coating Technology", the test of the thermal properties of the oxygen powder method and the test, the oxygen powder and its normal layer are tested. , the coating of the shade-resistant peeling roughness test, the chemical corrosion resistance test of the layer, the determination of the hole punching rate, the test of the resistance test of the layer, the test of the penetration resistance of the layer, the coating The test method for the day of the DIN cup force measurement.
In the oil and gas industry standard SY/T0442-97 "Steel pipe fusion ring gas powder outer layer technical standard" includes coating impact strength test method, coating adhesion test method (instrument: adhesion tester), Test method for items such as coating bending resistance test method.
For product information of the bending tester, please refer to: http://
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