Common knowledge of coating: pay attention to technical indicators when purchasing interior wall coating

Core tip: in recent years, more and more consumers choose interior wall paint to decorate their home walls Experts remind that when choosing decoration coatings, in addition to the prevention of formaldehyde, we should also pay attention to some technical indicators The recent spot check of coating product quality shows that some products have some technical quality problems For example, the comparison rate of some products does not meet the standard requirements Contrast ratio is the reflectance ratio of the same film applied on the black and white substrates with specified reflectance, which is an important index of latex paint The contrast ratio directly reflects the covering power of emulsion paint, which is low and relatively coated Application scope and advantages of roller ceramic coating Recommended introduction: the surface of ceramic rubber plate used for roller ceramic coating is cast into durable rubber plate by hundreds of independent small ceramic pieces Each ceramic piece has raised characteristics Under general conveyor belt pressure, thousands of unique cast bumps can produce positive traction, prevent slipping and extend the service life of conveyor belt roller At the same time, the bottom layer adopts high-quality rubber, which has strong elasticity and can play a good impact resistance role The scope of application of roller ceramic coating is one three six 83857180 (the same as V) 1 Roller coating in extremely harsh working environment 2 The belt joint is not suitable for fixing with iron buckle; 3 It is suitable for leather Paint Home News: in recent years, more and more consumers choose interior wall paint to decorate their home walls Experts remind that when choosing decoration coatings, in addition to the prevention of formaldehyde, we should also pay attention to some technical indicators The recent spot check of coating product quality shows that some products have some technical quality problems For example, the comparison rate of some products does not meet the standard requirements Contrast ratio is the reflectance ratio of the same film applied on the black and white substrates with specified reflectance, which is an important index of latex paint The contrast ratio directly reflects the covering power of emulsion paint The covering power is low, and the amount of emulsion paint to be applied will increase In addition, the low-temperature stability of some products does not meet the standard requirements Low temperature stability is a measure of the antifreeze ability of coatings when they are used at low temperature The solid content of emulsion paint is generally 45% - 50%, that is to say, half of it is water, so the water in the emulsion paint freezes at 0 ℃ or below, generating expansion pressure to make polymer molecules close together, particles are easy to agglomerate, leading to paint deterioration For this reason, experts remind consumers not only to check the environmental indicators of coatings, but also to pay attention to quality problems When purchasing, pay attention to whether the packaging container is damaged or distended When purchasing, shake it to check whether there is cementation If there are these phenomena, you can't buy it Before use, open the tank first to check whether the coating has stratification, bottom caking and cementation If the coating is still in an uneven state after mixing, it cannot be used Negotiations should be made immediately with the shop purchased In addition, most stores can't open cans on the spot to check the internal quality of products, so consumers must ask for valid vouchers and construction instructions such as purchase invoices when purchasing, so as to protect their rights after discovering product quality problems Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,