Varnish has the characteristics of good water resistance, but the drying performance is relatively poor. Generally used for earthen wood surfaces, so what is varnish? Is there formaldehyde for cleaning? Today by the Shanghai decoration network to give you a detailed answer to the relevant details of varnish, I hope you like.
What is varnish
Varnish, also known as "Van Li Shui", is a kind of paint that does not contain coloring substances, the main components of varnish are resin and solvent, varnish is a light yellow or transparent paint, its luster is very bright, easy to form. In daily life, the use is also more extensive, it is mainly applied to the surface of the object to play a protective role in the object, and when it dries, it will not affect the original object color, but can play a good decorative role on the object.
Does varnish have formaldehyde?
First of all, the varnish does not contain formaldehyde, formaldehyde will only exist in the glue, and the varnish is a gelatinous substance but not a glue. The main toxicity of varnish comes from benzene, a substance known as the "aroma killer", which has been identified by the World Health Organization as a strong carcinogen and can also cause dizziness, headache, nausea, chest tightness, fatigue and other symptoms. In other words, the more fragrant the varnish smells, the more toxic it is.
Varnish construction process
1, on the coloring oil or toning oil (Note: limited to the project with color change requirements, this process of ordinary engineering is not required.
2. Brush varnish to protect the primer (if there is no 1 process, that is, this is the first process). If you are brushing the varnish in the original color, you must clean the surface and perform the first time of the protective primer immediately after the material is purchased on the site. Primers also generally use topcoats. Varnish toppings must be treated prior to wall paint.
3. Clean the dust and dirt on the surface of the wood.
4. Use sandpaper to polish the surface of the board or wood line.
5. Brush the paint for the first time.
6. After drying, use the blended toner, cooked rubber powder, and double fly powder to mix the synthetic putty to cover up such as nail eyes and tree scars to make it the same as the natural color.
7, after drying thoroughly, use fine sandpaper to polish the rough part of the color powder, this time is very critical, be sure to light the surface.
8. Brush the paint again.
9. After drying thoroughly, grind fine sandpaper
10, brush the paint again (that is, after a paint and then add a fine sandpaper to light, and so on. If there is a special primer, change the first paint to a special primer).
11. Wet the surface of the wood with a wet cloth first, and then use sandpaper to wet the surface after wetting the water, commonly known as water mill.
12. Brush the paint one last time. Generally speaking, counting the last paint, a total of about 4 to 8 times of topcoat needs to be brushed to have a better effect. The more paint the surface, the better, but generally should not exceed 10 times.
Varnish brand
1. Nippon Paint (old brand) Founded in 1883, Nippon can be said to be the old brand of varnish H, and has now become the largest paint manufacturer in the Asia-Pacific region. After so many years of enduring, it can be seen that consumers have a lot of trust in it. Some Olympic venues, CCTV, and the automobile brand Guangzhou Honda have all cooperated with Nippon, which shows that his reputation is quite good. 2. China Resources Coatings (Chinese brand) China Resources Coatings Co., Ltd. was established in 1991 in Shunde, Guangdong Province, and can be said to be a famous enterprise of China's top ten brands of varnish.
3. Mei Tu Shi lacquer (Chinese brand)
Meitushi Company is one of the top 100 chemical enterprises in China, and is a designated promotion product of PetroChina, Sinopec and other companies. Over the years, it has been sold well throughout the country and | overseas, not only participating in national key projects such as the Olympic Hall of the Great Hall of the People in Beijing, but also having in-depth exchanges and cooperation with foreign brands such as Panasonic Electric appliances and LG Electronics.
4. Wrigley Paint (American brand)
American Wrigley Coatings has more than 50 branches and factories around the world, not only the top ten brands of varnish, but also the scope of business.
5. Apollo paint (American brand)
Apollo Coatings is one of the top ten famous varnish brands, covering thirteen states in the United States and establishing mature operating companies in various countries around the world.
6. Dorae Clay Paint (British Brand)
Doroth is one of the top ten varnish brands in China and enjoys a high reputation. According to statistics, about 50 million households worldwide use Dulux paint every year.
7. Gabriel Lacquer (Chinese famous brand)
Gabriel is sold in major stores and counters across the country. Most of Gabriel's products are very cost-effective. It is a well-deserved top ten brand of varnish.
8. Three tree paint (Chinese brand)
Sankeshu should be a well-known name in China, the brand has been committed to the research and development of green environmental protection series products, from the perspective of long-term luck is a brand with excellent development momentum.
9. Bard Clay Paint (Chinese Famous Brand)
Bardex's product quality is excellent and has always maintained a good reputation.
10. Dabao Paint (Taiwan brand)
Dabao Chemical is a combination of many Asian enterprises, with a wide range of products, and is the leader in the top ten brands of varnish.
Varnish action
1, the paint can be applied to the surface of the furniture along the texture of the furniture, and after the varnish is dried, a smooth and transparent film will be formed, but the original color and texture of the wood can still be seen, which can play a good role in moisture-proof wear resistance and insect moth, which can protect the furniture and increase the color of the furniture.
2, can be painted on the surface of doors and windows, cars, bicycles and other things, wait until it is dry, it will form a film, because such items are metal, so it can play a role in anti-oxidation, equivalent to play a protective function.
3, paint can also be used for gouache painting or fixed sketch drawing, the varnish brush on the surface of the painting, can play a good anti-oxidation effect, can effectively extend the collection time of the painting.
Types of varnishes
1. Ester glue varnish
Ester glue varnish has good water resistance, bright paint film, but poor dryness, this coating is mainly used to coat wood surfaces, but can also be used as metal mask light.
2. Shellac varnish
Shellac varnish dries quickly, which can make the wood grain more clear, but the disadvantage is that the water resistance is poor, it is easy to lose its luster in the sun, and the hot water will be white.
3. Phenolic varnish
Phenolic varnish dries relatively quickly, the paint film is tough, the gloss is good, it is heat-resistant, and it buys water; The disadvantage is that the paint film is easy to yellow and brittle. The paint is mainly used to coat wood, but can also be applied to oil-colored paint as a cover light.
4. Alkyd varnish
Alkyd varnish has high hardness, can be polished, polished, and has a bright color; The disadvantage is that the atmosphere resistance is poor and the membrane is brittle. This paint is widely used to coat indoor and outdoor metal, wood surface and alkyd magnetic paint cover light.
5. Acrylic varnish
Acrylic varnish is made from methacrylate and methacrylic copolymer resin, toughener dissolved in a mixture of esters, alcohols and benzene. Good weather resistance, heat resistance and adhesion.
6. Polyester gum varnish
It is made of polyester scraps, oleic acid, rosin, pentaerythritol and glycerin after being boiled, and then added to the drier, No. 200 paint solvent oil, xylene. White dry, lacquer film bright, used to paint wood surface, can also be used as a metal mask light.
7. High-performance varnish
The high-performance varnish is composed of fluorocarbon resin, ultra-weather-resistant pigment, multi-functional additive and so on. A and B component packaging coatings have the advantages of ultra-durability, low pollution, resistance to various radiation, etc., and their hard and dense protective layer can effectively prevent the carbonization of concrete.
8. Fluorocarbon varnish
Fluorocarbon varnish is a two-component fluorocarbon varnish with fluorine resin as the main ingredient, which has excellent properties such as ultra-weather resistance and long durability life, and can be used for the cover protection of a variety of coatings and substrates. Suitable for epoxy, polyurethane, acrylic, fluorocarbon paint and other glazing and decorative protection.
The difference between varnish and paint
Varnish is a kind of oily paint, the solvent for painting it is organic, such as butyl acetate, xylene and the like, and the additive is also special for oily paint. The solvent of the water-based paint is water-based, and the additive will generally dissolve in water. Paints and water-based paints are actually paints, but people are accustomed to calling building water-based paints paints. The water-based paint volatilizes mainly water, which is more environmentally friendly.
The above is the relevant details of the varnish shared by Shanghai Decoration Network today, full of dry goods I hope you like.