Construction method of wood coatings
1, dust should be removed in advance before the construction of wood coatings. The surface of the wood has been polished.
2. Different materials should adopt different construction methods. Hardwood is directly painted; If it is ordinary wood, it needs to be treated with transparent putty as the base material. After drying, it should be polished evenly, and all the excess transparent putty attached to the wood surface should be ground off.
3. When painting, the environment and painting tools must be clean, and the operators should wear clean work clothes and clean working caps.
4, besmear brushs paint should be thin and not thick, can be thin but multi-channel;
5, master the heat. When the temperature drops below 5℃, construction should be avoided; Avoid operating in direct sunlight or high temperature. If the temperature is too high, the paint will dry faster and pinholes or bubbles will appear. So try to avoid high temperature construction.
6, the humidity is appropriate. When the environmental humidity is greater than 85%, it is not suitable for construction, otherwise it will easily lead to defects such as whitening of paint film.
Classification of wood coatings
Clear oil:
Its preparation method comprises heating and refining dry vegetable oil or dry vegetable oil and part of semi-dry vegetable oil, and adding desiccant. Clear oil dries faster than unheated vegetable oil, but the paint film is soft and sticky. It is mainly used to prepare thick paint, and can be used to coat the surface of wood products alone, such as waterproof, anticorrosive and moisture-proof for bullet boxes and wooden stakes.
Ester glue varnish:
It is refined from dry vegetable oil and polyol rosin ester, added with drier and blended with 200 # solvent oil or turpentine. Bright paint film and good water resistance. It can be used for painting wooden furniture, doors and windows, wallboard and other aspects, as well as painting metal products.
Phenolic varnish:
It is made of dry vegetable oil and rosin modified phenolic resin-based 200 # solvent oil or turpentine. The paint film is bright, moisture-resistant, transparent in appearance and free of mechanical impurities. It is suitable for coating wooden furniture.
Phenolic enamel in various colors:
It is made of drying oil and rosin modified phenolic resin, ground into pigment and physique pigment, added with drier, and blended with 200 # solvent oil or turpentine. The paint film is hard, bright and has good adhesion, but the weather resistance is slightly poor. Mainly used for indoor dull wood and furniture decoration.
Various colors of phenolic matt enamel:
It is made of rosin modified phenolic resin and polymerized drying oil, then ground with pigment, added with drier and blended with No.200 solvent oil or turpentine. The coating has strong adhesion, hard paint film and poor weather resistance, and is mainly used for indoor wooden surface decoration.
Nitro wood primer:
It is mainly made of nitrocellulose, modified alkyd resin, quick-drying resin toughening agent, filler and mixed organic solvent. It is the bottom layer of nitrocellulose lacquer wood lacquer series, which can penetrate into wood tissue, has filling function, is easy to polish, can make wood burrs stand up, and is easy to remove after drying. Using protective agent can enhance the natural feeling of wood and reduce the usage of wood.
Nitro enamel for external use in various colors:
It is made of nitrocellulose, oil-modified alkyd resin, various pigments, toughening agent and mixed solvent. The paint film dries quickly, is smooth and bright, and has good weather resistance. Sand wax can be used for polishing (if sand wax is often used for polishing and maintenance, the service life of paint film can be prolonged). Mainly used for decoration of indoor furniture, wallboard, etc. , can also be used as children's toys, hardware tools, etc.
Perchloroethylene varnish:
It is made of perchloroethylene resin, oil modified alkyd resin, toughening agent and organic mixed solvent. The coating has excellent corrosion resistance, fire resistance, corrosion resistance to acid, alkali, salt and kerosene, and can be used alone, but the adhesion is poor. It is suitable for the decoration and protection of equipment, pipelines, buildings, indoor doors and windows, wallboard in painting workshops, and the painting of subway tracks.
Various colors of perchloroethylene enamel:
It is made of perchloroethylene resin, alkyd resin, various pigments, toughening agent and organic mixture. It has excellent corrosion resistance and moisture resistance, but poor adhesion. It can be used on the surfaces of mechanical pipes, equipment, buildings and wood in various chemical plants to prevent the corrosion of chemicals such as acid and alkali.
Conclusion: The above is the construction method of wood coatings introduced by Bian Xiao. I believe that after reading it, you should have a certain understanding of coatings. When choosing wood coatings, you can judge the quality of wood coatings according to this method. If you need to paint the wood at home, you can find some professionals to paint it, which will make the wood better. I hope that Bian Xiao's suggestion can make everyone know more about the construction method of wood coatings.
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