Common knowledge of coating: precautions when using PU varnish

Core tips: precautions for PU varnish construction are as follows: 1、 Select the plate with low moisture content Generally, the moisture content of the plate shall be less than 12% and 10% as far as possible The purchased boards shall be well protected, and the moisture content shall not be increased due to dampness The boards with good conditions shall be dried before construction Avoid the phenomenon of whitening and cracking caused by the water content of the board after decoration 2、 When using PU varnish, pay attention to the difference between winter products and summer products Due to the difference of temperature, in order to facilitate the coating construction and lifting Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Paint Home News: PU varnish construction precautions are as follows: first, choose low moisture content of the board, general board moisture content should be below 12%, try to be below 10% The purchased boards shall be well protected, and the moisture content shall not be increased due to dampness The boards with good conditions shall be dried before construction Avoid the phenomenon of whitening and cracking caused by the water content of the board after decoration 2、 When using PU varnish, pay attention to the difference between winter products and summer products Due to the difference of temperature, in order to facilitate the coating construction and improve the quality of the paint film, the products for summer use will be adjusted to be slow drying, while the products for winter use will be adjusted to be slightly fast drying Therefore, summer products should not be used in winter, otherwise, it will cause the film defects such as undercut due to slow drying The best use of the same company's supporting curing agent, diluent, so as not to cause bad film defects 3、 Strictly follow the ratio of paint and curing agent provided on the label of the company, and do not add less or more curing agent at will, otherwise, it will cause defects such as undercut or cracking of paint film The paint shall be mixed evenly, filtered with 200 mesh filter cloth, and constructed after 15 minutes of static defoaming (Note: the ratio on the label of the company is the quality ratio) IV it is not allowed to add chemicals such as driers at will, otherwise it will cause paint film defects such as cracking 5、 During paint construction, the construction temperature shall not be lower than 5 ℃, and the humidity shall not be higher than 85% RH 6、 It is forbidden to construct each layer if it is not dried well or polished normally, otherwise it may cause undercutting, falling off and other phenomena 7、 It is strictly prohibited to apply thick coating at one time, or it will cause defects of paint film such as undercut, whitening, cracking, pinhole, bubble, etc 8、 After the paint is mixed, it should not be placed for too long The longer the time is, the more the gloss will decrease 9、 The viscosity of the paint changes with the change of temperature When the temperature is low, the viscosity will increase a lot, which will lead to the increase of the amount of diluent, at this time, the gloss and fullness of the paint will decrease 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,