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Knowledge of steel: epoxy corrosion-resistant seamless steel pipe what function
Epoxy resin corrosion What is the function of seamless steel pipe The film is hard, wear resistance, strong adhesion, and has good water resistance Epoxy series of anti-corrosion coatings Performance characteristics Epoxy series coating products with tough film, Wear resistance, good adhesion, chemical resistance, alkali resistance, water, solvent, oil and other properties of excellent performance, and have good insulation. Mainly in the following areas: 1, excellent adhesion Epoxy resin structure contains easy to hydrolysis of aliphatic (-C-) and ether bond (- generation, does not produce gas, small volume contraction, thermal expansion coefficient, So that the coating will not be caused by the temperature and stress Cracking. Film flexibility, better than phenolic resin 7 times. 4, a high degree of stability Epoxy itself thermoplastic good, without curing agent will not be cured, but also So it will not be affected by heat.So epoxy resin coating has a high degree of stability, put 1-2 years will not deteriorate.Technical indicators Film appearance Smooth and smooth paint film, the color meets the standard sample Fineness ≤20μm Drying time, standard thickness Single Coating, 25 ℃ surface dry ≤ 2h, hard work ≤ 48h gloss, 60 ° light ≥ 90%, pencil hardness ≥ HB Adhesion, cross-hatch method, grade ≤1 Cupping test ≥4mm Bending test ≤2mm Water resistance 240h Gasoline resistance Sexual 24h weathering, artificial accelerated aging 800h Fading ≤1, powdering ≤1 Packaging specifications Paint: 23kg / barrel Curing agent: 2kg / barrel Basic parameters The ratio of paint? Curing agent = 10? 1 ) Construction time limit 25 ℃, 8h Theoretical dosage 100 ~ 150g /? Overcoating interval 1 Depending on the temperature level may be appropriate to shorten or extend the overcoating interval, such as more than the longest overcoated sandpaper can be used on the front film sand blasting. Shortest longest 25 ℃ 8h 2d Curing time (after mixing) Temperature aging time 25 ℃ 30min Air temperature below 25 ℃ may be appropriate to extend the aging time. Recommended number of coating Road coating, dry film thickness 55 ± 5μm Surface treatment Paint the base surface should be solid clean, no oil, dust and other dirt .Above the base surface without acid, alkali or moisture condensation .Air painting method, or roller coating. The best construction temperature is 0 ~ 35 ℃, relative humidity ≤ 85 ℃, no rain, fog, snow and more serious dust conditions, no construction. Shelf life stored in a cool, dry and ventilated place, paint a year, curing agent for six months. Notes 1, before the construction First read the instructions for use before using the paint and curing agent according to the requirements of the ratio of fine, how much with the number of stir after use, 8 hours run out. After curing with curing agent packaging barrels must be strict to avoid gelling 2, the construction process to keep dry and clean, non-contact with water, acid, alcohol, alkali, etc. 3, the construction and drying period, the relative humidity of not more than 85%, 7 days after painting the product can be delivered to use the read so much, Did not know, do not understand often pay attention to our 51 steel pipe network