What are the classification of woodiness furniture common wood coatings?

all in wood coatings, general wood coatings, divided into two categories: water-based paint, oil paint. Wrapped in paint furniture, wood and air space, protection. If wood bare exposed to the air, the air is dry, moisture to evaporate slowly, wood will loose each other. When the air is humid, the water will run outside to the inside, make the wood expansion and deformation. In addition, if there are some worms eat wood, made his home in the wood, the more serious damage to the furniture. And to paint the furniture, these things will happen. At the same time, some wooden knot, slightly thick paint, the drawbacks of wooden parts will be covered.

water-based paint and oil paint, the difference is that different dispersion medium. With water as dispersion medium coating called a water-based coating, it is water soluble resin membrane. With organic solvent as dispersion medium known as solvent coatings ( Paint/paint) 。 Organic solvent is the main hydrocarbon, and the rest are ketone, alcohol, ethylene glycol, ether, ester, nitro branched alkanes, etc. , such easy to volatile organic compounds is the main reason for the paint is bad for the environment and health.

oily wood coatings itself contains many of the body of harmful substances, such as benzene, toluene, free TDI, etc. , and on the smell is very pungent, general malaise. General normal manufacturer not to choose the paint that endanger human body health. Waterborne wood coatings, waterborne wood coatings made of 40% water, 30% of the resin emulsion, 25% of the pigment padding and 5% of the additives such as harmless ingredients, with this kind of paint besmear brushs furniture handle and texture also feels very comfortable, but the paint on the market at present price is more expensive.

a, oily wood coatings

1, lacquer, NC paint) Is more common wood and decorated with coatings. The main film forming matter based on nitrocellulose lacquer is given priority to, solvents are mainly esters, ketones, such as ethanol solvent, alcohols, such as cosolvent, and benzene class such as diluent. Lacquer is the feature of fast drying speed, smooth coating brightness, good construction and can be repaired. But the lacquer film heat resistance and chemical corrosion resistance than polyurethane coating, PU paint) , when construction in high humidity weather also easy.

2, Chinese lacquer, also known as natural lacquer paint, paint, raw lacquer, soil. Eight years of sumac can produce paint, paint agricultural cut bark mussel, clam shells or bamboo piece at the bottom of the blade, after acquisition of paint into the barrel, sealed with the paper. Removed from the sumac natural lacquer liquid, raw lacquer, and cooked lacquer is to point to by sunshine, mixing, mixed with the raw lacquer after tung oil oxidation.

3, polyester paint, PE paint) Is made of polyester resin as main film former a heavy coat. Polyester paint of paint film plump, thick hard. Polyester paint construction need to be in the process of curing, the curing agent of the weight of the paint one third of the total weight. The curing agent, also known as curing agent, its main composition is TDI ( Toluene diisocyanate/toluene diisocyanate) 。 These in the free state of TDI will become yellow, not only make furniture surface yellowing, will also make the metope of adjacent to yellow, this is polyester paint a big failing.

4, varnish ( 清漆) , also known as any standing water, varnish was once a family is decorated in the most common type of paint, the reason is that it is not high to the requirement of the construction, no professional can operate. Varnish is good flowing property, the paint the tears also unimportant, brush again, paint tears can dissolve again. Varnish has the characteristics of transparent, fast film forming, water resistance, the disadvantage is that the coating hardness is not high, the heat resistance is poor, under the action of ultraviolet light, easy to turn yellow and so on.

5, uv-curable wood coatings ( 紫外线,紫外线固化涂料) , UV lacquer was named for paint curing method, it is through the machine equipment, automatic roller besmear, curtain coating to the panel furniture, in the UV ( Wavelength is 320 - 390海里) Under the irradiation of prompting the initiator decomposition, produce free radicals, resin reaction, instantaneous curing film. UV paint is one of the most environmentally friendly varieties of oil paint, in foreign countries, especially in Europe, almost every a scale furniture production enterprise has at least one or more complete furniture UV paint coating production line, at this point, the product from the sanding, filling, sealing, coloring coating of paint drying, are completed one-time continuous coating.

2, waterborne wood coatings

1, waterborne wood coatings is much lower than the VOC content of oil paint, small impact on the environment, not only is good to the health of construction personnel and users. However, wood coatings market mainly in oil paint. The analysis thinks three factors restricting the development of water-based paint: one is the performance, the second is the construction conditions, three is the price.

2, environmental performance, the best is a water-based wood coatings, the most environmental protection of solvent wood coatings is not using TDI do one-component polyurethane paint curing agent; Solid content is higher, the second is using a variety of less toxic solvents, additives and diluents pretreatment lacquer; Finally is ordinary lacquer and is using TDI as curing agent of two-component polyurethane paint.

3, adornment effect is one of the best water-based wood coatings, followed by polyurethane paint and all kinds of lacquer.