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At present, the variety of wood lacquers used for interior decoration is mainly polyurethane wood lacquer. Polyurethane lacquer refers to a type of coating material in which a polyaminourethane resin obtained by reacting a polyisocyanate with an active hydrogen-containing compound is a main film-forming substance. According to the use, it can be divided into primer, topcoat, floor paint and so on. During the construction, the mixture is uniformly mixed according to the specified ratio, and after being placed for a certain period of time, it is uniformly applied to the surface of the substrate by brushing, spraying, and rolling. If there is a matching primer, first apply the primer at the specified time interval for 1~2 times, then apply the top coat for 2~4 times at the specified time interval; if there is no matching primer, directly apply the top coat. construction.
First, the purchase notes:
1. Select famous brand products produced by well-known enterprises. These enterprises have advanced equipment and production technology, strict quality management and quality assurance system and thoughtful after-sales service. The product quality is guaranteed.
2. When purchasing, you can first look at the outer packaging of the coating product. The product should be marked on the packaging by CCC certification, quality system certification, green environmental certification, product certification, etc., and have corresponding signs.
3. Consumers should observe whether the packaging label is complete and pay attention to the net content. The product packaging should be intact and there is no leakage. The package should generally indicate: implementation standard, production date, trademark, site, factory name, batch number, inspection certificate, color, instructions for use, etc. In addition, the decoration materials have a variety of packaging specifications, should pay attention to the net content when purchasing (such as some polyester paint 3L packaging can only hold 2L paint), the nominal weight on the barrel should be consistent with the actual weight.
4. Consumers should make a rough estimate of the amount before purchasing. When purchasing, try to purchase the foot as much as possible to avoid slight color difference in the paints purchased in successive stages.
5. It is best to use the same brand or matching paint for the primer and topcoat to prevent chemical reaction between the primer and the topcoat. When purchasing, you can carefully read the model number of the matching primer or topcoat indicated in the product description.
6. When you purchase, you can open the lid of the bucket for inspection. The more delicate the texture of the paint, the better the effect will be after painting, and vice versa. At the same time, see if the liquid is uniform, whether there is delamination or agglomeration, if any, the paint quality is poor.
Second, matters needing attention during construction:
1. When constructing paint products, it should be formulated in strict accordance with the ratio in the instruction manual. After the preparation, it should be allowed to stand for about 15 minutes to facilitate the premature ripening reaction and eliminate bubbles between the components.
2. When spraying or brushing, ensure that the substrate is dry. The wetness of the substrate may cause skin peeling, blistering, falling off, etc., and the thickness of the coating film should be strictly controlled. Otherwise, the drying time is prolonged, and the moisture in the air is easily absorbed to make the coating film white and foam.
3. Avoid construction in the rainy season and high air humidity. Otherwise, it may cause enhanced ventilation and take certain protective measures to avoid injury to the constructor.
4. Pay attention to the control of the construction interval time during construction. The short time interval may cause the skin of the paint film to wrinkle and whitish.
5. Pay attention to ventilation during construction. No open fire is allowed on the site to avoid fire.
After the construction is completed, it should be ventilated for a period of time (3 to 6 months). If conditions permit, please check the room for indoor air quality test.
Painted furniture should be protected from direct sunlight to avoid long-term exposure to ultraviolet light, resulting in cracking and pulverizing of the paint film. Should also avoid hard objects scratching, collision, etc., causing damage to the paint film; secondly, the paint film should try to avoid direct contact with hot objects to avoid burns.
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