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Water-based paint how to choose? _ water-based paint finish is experts | opal chemical water-based paint

by:Opal     2021-01-18
A, want to know what resin are used to make the water paint


water-based resin classification is very clear, all kinds of resin performance, function and price range or differs very big, directly affect the quality and performance of water-based paint, effect and cost, can be sure to select products to satisfy his needs.





2, water-based paint products for the most basic check


1) Taste: can't have a strong pungent smell, can't have strong alcohol smell, more can't have a strong sense of smell, because the taste is determined by the additive, beware of fraud and technology does not pass the water-based paint.





2) Emulsion properties: generally is transparent to milky white, don't take thick thick ( The viscosity) To determine whether the product is good or bad, after all, thick thick not is determined by lower cost of thickening agent, the key is the color and viscosity of the sample to be identical.





3) Dispersion: intuitive see packaging products in the emulsion, no precipitation, dispersed evenly after taste, so can reduce or avoid difficult product deterioration, besides some special design products.





3, test and check for water-based paint and paint film properties


1) Grinding: dry powder and non-stick sandpaper sandpaper requirements, otherwise, the sand paper consumption will increase a lot, and polishing the paint film flatness will decline, affect the coating quality.





2) Resistance to yellowing, coating on the glass or porcelain, after being dry, exposure in the sun more than 3 days or more than 4 hours under uv light irradiation, watch film yellowing condition, the smaller the yellowing is better, not yellowing is best.





3) Table dry time: temperature 5 ℃, humidity 80% or less, or air, under the condition of normal distribution table dry time 10 minutes or less, otherwise it's easy to have a sticky dust, slow drying difficult polishing, painting longer and extension of the process, such as table dry time more long more difficult to apply.





4) Adhesion: stay dry coating finish after 7 days, with box blades and a ruler to draw 10 x10, about 1 mmx1mm little, with transparent tape after stability, pull-up, hard stick out qualified within 3 case, had better be a not to drop, of course, the most standard method is to use the knife and 3 m adhesive is tested.
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