Common knowledge of paint: precautions for paint construction in summer

Core tips: the temperature is high in summer, and many furniture factories are not well insulated In order to reduce the temperature of the paint to be dried room, the furniture factory sprinkles water to cause high humidity of the room to be dried, which leads to frequent paint quality problems In high temperature weather, the paint blisters (or called prickly heat), and the bright light of PU series is especially obvious At this time, attention should be paid to the construction Painters usually use the method of adding less curing agent to avoid blistering Some factories only add 50% of the standard amount (the curing agent is halved) In fact, this is a mistake Reducing curing agent can not avoid paint blistering in essence, but will lead to incomplete paint reaction, which will lead to paint film 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: the temperature is high in summer, and many furniture factories are not well insulated In order to reduce the temperature of the paint to be dried room, the furniture factory sprinkles water to cause the high humidity of the room to be dried, which leads to the frequent occurrence of paint quality problems In high temperature weather, the paint bubbles (or called "prickly heat"), and the PU series light is especially obvious, so attention should be paid to the construction Painters usually use the method of adding less curing agent to avoid blistering, and some factories only add 50% of the standard amount (the curing agent is halved) In fact, this is a mistake Reducing curing agent can not actually avoid paint blistering, but will lead to incomplete paint reaction, resulting in soft paint film and poor adhesion If it is primer, it is easy to cause undercut, if it is high The top coat will also cause unstable luster and sticking back after packaging The main reason why the paint is easy to blister in summer is that the surface of the paint film dries too fast Generally, the method of adding a proper amount of slow dry water to the diluent (no more than 10% of the diluent) is adopted, or the amount of diluent is increased to reduce the construction viscosity and promote the bubble volatilization Even if the curing agent is added less, the primer and matte finish are recommended to be no less than 1:0.45 and the bright finish no less than 1:0.8 Before spraying, dehumidify the spray booth and the drying room; in summer, there are many mosquitoes, which are easy to fall on the surface of the paint film in the process of paint drying, resulting in paint rework It is recommended to do the following points during rework: 1 Polish thoroughly Generally, wax paste is added to the top coat to increase the hand sensitivity and smoothness If the top coat is not fully polished before recoating, delamination will occur; 2 The sandpaper should not be too thick when grinding We found that many domestic 600 sandpaper is even thicker, and the thick sandmark requires a thicker paint film, which leads to poor transparency Finally, the color of the panel is not the same In contrast, imported 600 sandpaper is used for sanding, although the sandpaper is more expensive on the surface, it only needs to be a thin one when repainting the finish The coating can save paint and the surface is not obvious During the production process, it is found that many furniture factories like to open a small hole on the curing agent barrel for the convenience of drawing After pouring, they do not seal the hole or even cover it When the curing agent is exposed in the air, it is easy to thicken and solidify After mixing the paint, it is easy to lead to low gloss and poor adhesion of the paint film Similarly, the diluent should also be kept in a closed state, because the diluent is composed of a variety of solvent groups The volatilization speed of each solvent is different If the solvent is exposed to the air for a long time, some strong solvents will volatilize, resulting in the poor solubility of the remaining solvent When painting, there may be white back, poor hand feeling, many impurities, and even tofu brain phenomenon when painting The continuous volatilization of diluent exposed to the air will not only waste, but also cause the high concentration of solvent in the air In a great potential safety hazard, PE diluent will produce self polymerization, thickening and even gelling after contacting with air 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,