In the summer, the temperature is high and humid, and the wooden furniture is prone to shrinkage, expansion and cracking. If the wood lacquer is applied to the surface of the wooden furniture, it can effectively protect the decorative effect.
Three categories of paint
From the material point of view, the common wood lacquers in the market are mainly divided into polyurethane lacquer, nitrocellulose lacquer and water-based lacquer. From the perspective of gloss, the wood lacquer has three kinds of high gloss, matte and semi-matte, which are selected from color and wood lacquer. There are two kinds of varnish and color paint. How do we choose between different wood lacquers?
Material selection: water-based paint is the most environmentally friendly
The nitro-lacquer coating is thin and fast, easy to repair, and can retain the true texture of the wood to a large extent. It is suitable for small-area crafts; the polyurethane lacquer film is bright, water-resistant and wear-resistant, but it is difficult to repair and dry for at least 8-12 hours. For high-grade furniture and large-area wooden floors - the gloss and color retention of these two wood lacquers are not very good.
Water-based wood lacquer is a new product and a high-grade product. It is simple and convenient to construct, non-yellowing, rust-proof and high-temperature resistant, and does not deepen the color of wood. The most important thing is that it is environmentally friendly as other water-soluble paints, especially in other wood lacquers. The polyurethane water-based paint has the best performance.
Choosing gloss: high light chill, matte elegant
The higher the gloss of the wood paint, the more light is reflected on our eyes, so the choice of highlight, matte, and semi-matte is mainly based on the home style and indoor light requirements.
The furniture with high-gloss wood lacquer has a cold and hard line and a strong sense of modernity. It will also be brighter and warmer in terms of visual appearance. The use of matt wood lacquer will feel softer and softer, temperament is classical and restrained, and the feeling of living is biased towards elegance or Leisure. In terms of room space, it is recommended to choose high-gloss wood lacquer for living room wood furniture, and mild matte and semi-matte wood lacquer for bedroom wood furniture.
Choosing color: varnish retains wood grain, color paint and harmony
The varnish contains no pigment and is transparent, while the lacquer adds pigment, the film is colored and blocks light from penetrating. The color paint is mainly used as a blending paint. It has good hiding ability and strong decoration. At the same time, it can make wooden furniture glow with the color you like. It is used in European or modern style, while varnish can show wood covered with paint. The texture is more original.
Construction environment three control
Wood lacquer construction is a meticulous work of the door. It requires the temperature, viscosity, humidity, thickness and drying conditions of the construction environment. If the construction conditions are not met, the final paint film may have serious ills. Furniture brings big troubles.
Temperature and viscosity to be controlled
The wood lacquer construction environment needs to be lower than 35 ° C, the humidity is lower than 85%, and the optimum temperature is 25 ° C. At the same time, it is necessary to pay special attention in the summer that the viscosity of summer wood lacquer is lower than that of winter, so the proportion of thinner should be adjusted. It is best to carry out the proportioning test of wood lacquer and thinner before construction to avoid the temperature being too high and diluted. The dose is not enough to affect the final effect of the paint film.
Thickness and caliber to be controlled
When spraying wood furniture topcoat for wood furniture, it is necessary to control the thickness of the coating film. It is best to apply thin coating to avoid problems such as bubbles and pinholes. At the same time, the diameter of the spray gun should be well grasped. The diameter of the primer spray gun is 1.5mm. -1.8mm, PE primer spray gun range is 1.8mm-2.5mm, and the paint spray gun caliber is 1.5mm.
Drying speed should be controlled
The dry time of the wooden furniture after painting can not be too short or too long, the best time range is between 25-45min, and the drying speed can be adjusted by slow drying solvent or curing agent: the temperature is diluted at 25-30 °C The agent is added with 5%-10% slow drying solvent; when the temperature is 30-35 ° C, the diluent is added with 10%-15% slow drying solvent, and the curing agent can reduce the amount by 20%.
Three points of construction matters
The wood lacquer mainly consists of four links, (1) clear bottom surface putty: clean the surface → sanding paper polishing → upper run powder → sanding paper → full scraping the first time putty → sanding paper polishing → full scraping the second time putty (2) Make up the nails to clear the primer: fine sandpaper polishing → paint oil color → brush the first time to clear the primer → make up the nails, polish, cover, (3) the primer: fine sandpaper polishing → The second pass brushing primer → fine sandpaper polishing, (4) top paint: the third time brush topcoat → water sandpaper sanding → lightening, waxing, polishing.
Pre-calculated brushing area
Most of the remaining wood paint can not be returned, so the purchase of a large amount of wood paint can avoid a lot of waste of materials, the number of wood paints required = (coating area / single set single pass area) * need to paint The number of passes, which can be used to consult the brand's shopping guide at the time of purchase, calculate the approximate amount of paint purchased.
Do not forget to filter by the paint
Wood lacquer is generally three components (main lacquer, thinner, curing agent), the primer and topcoat are better used together, evenly mixed before mixing, and the paint is strictly proportioned. After the preparation is completed, it must be filtered through the cloth, and it can be painted for 10-15 minutes.
Brush should be thin and not thick
Whether it is putty or primer finish, when applying wood lacquer, it should be thin and not thick. It is recommended to carry out thin layer and multi-layer; if multi-layer construction is required, each painting should be dry after the lower layer is applied and the sanding should be done every time. . At the same time, each painting area should not exceed 4-5 plank width.
Wood paint acceptance focus
After the completion of the construction, it is necessary to inspect the paint surface of the wood products to ensure that the "face" of the wooden furniture is not damaged. So what effect is the perfect face?
Clear or no color difference
If the varnish is on, it is necessary to see whether the texture of the surface of the wood is clear, whether it reflects the texture of the wood, and the brown eye is smoothed, and other defects of the wood are also covered; if the paint is on the paint, it is necessary to see if the paint is evenly colored. , the color depth is consistent, and the paint surface is brushless.
Smooth and plump finish
After the wood lacquer is completely dry, touch the lacquer surface by hand to ensure a smooth hand, uniform thickness, smooth without roughness and particles, and the reflection is very uniform.
No pinhole crack defect
Check that the wooden house has problems that are not caused by improper construction, such as the appearance of large and small particles on the surface of the paint film, the color is whiter than the original white, the needle-like small holes appear, and the surface has cracks.
Wooden furniture has always been the princess of the home furnishing industry. Although the temperament is detached, it takes about 120,000 points to take care of it. Fortunately, the wood lacquer is like the best protective armor, as long as we carefully choose a high-quality wood lacquer. With proper construction, it can greatly reduce all kinds of "illness" of wooden furniture when the weather changes.
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