Paint, customarily we call it paint. Whether it is high-level decoration, or ordinary decoration, will be more or less related to the paint.
Ou Long Paint ( Western Chemicals )
First, the use of paint
The first use of the coating for the object being applied is to protect the surface, and the second purpose is modification. In terms of wood products, due to the porous structure on the surface of wood products, it is not resistant to dirt. At the same time, the surface of wood products is more knotty, not beautiful. Paint can solve this problem at the same time.
Second, the classification of paint
1. According to different parts, the paint is mainly divided into wall paint, wood paint and metal paint. Wall paint includes exterior paint, interior wall paint and top paint. It is mainly latex paint and other types; wood paint mainly includes lacquer, polyurethane paint and so on. Metal paint is mainly enamel paint.
2, according to the different state, paint can be divided into water-based paint and oil paint. Latex paint is the main water-based paint, while nitro-lacquer, polyester ammonia paint, etc. are mostly oil paints.
3, according to different functions, paint can be divided into a variety of types: waterproof paint, fireproof paint, anti-mold paint, anti-mosquito paint, and a variety of multi-functional paint and so on.
4, according to the form of action can be divided into volatile paint and non-volatile paint.
5, according to the surface effect points, can be divided into transparent paint, translucent paint and opaque paint.
Third, the variety of paint
1, wood paint.
1) Nitro varnish. Nitro varnish is a kind of transparent paint made of nitrocellulose, alkyd resin, plasticizer and organic solvent. It is a kind of volatile paint, with quick drying and soft gloss. Nitro varnish is divided into light, semi-matt and matte, which can be selected according to the need. Nitro-lacquer also has its disadvantages: high wet weather is easy to whiten, low fullness, and low hardness.
2) Hand sweep paint. One type of nitrocellulose varnish is a non-transparent paint made of nitrocellulose, various synthetic resins, pigments, and organic solvents. This paint is specially formulated for artificial construction and has a quick drying feature.
3) Main auxiliaries for lacquer
a. That day water. It is a colorless, transparent liquid with a banana odor that is a mixture of organic solvents such as esters, alcohols, benzene, and ketones. Mainly from the nitrocellulose lacquer and curing.
b. White water, also known as anti-white water, is called ethylene glycol monobutyl ether. In the wet weather construction, the film will be whitish, and the appropriate amount of diluent is 10~15% of nitromagnetized white water.
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2) Polyester paint. It is a thick paint made of polyester resin as the main film forming material. The paint film of the polyester paint is full and the layer is hard. Polyester paint also has a variety of varnish, called polyester varnish.
Polyester paints need to be cured during the construction process. The amount of these curing agents accounts for one third of the total paint content. These curing agents are also called hardeners and their main component is TDI (toluene diisocyanate). These TDIs that are in the free state will turn yellow, which will not only make the furniture painted yellow, but also make the neighboring walls yellow. This is a major drawback of polyester paint. Currently, there are yellowing-resistant polyester paints on the market, but they can only be used for "yellow-resistance", and they cannot completely prevent yellowing. In addition, free TDI beyond the standard can also cause harm to humans. The harm of free TDI on human body is mainly sensitization and stimulatory effects, including symptoms such as causing painful tearing, conjunctival hyperemia, coughing chest tightness, shortness of breath asthma, red papules, rash, contact atopic dermatitis and other symptoms. Internationally
The limit of free TDI is controlled below 0.5%.
4) Polyurethane paint.
Polyurethane paint polyurethane paint that is polyurethane paint. Its film is tough, full gloss, strong adhesion, water resistance, abrasion resistance and corrosion resistance. It is widely used in advanced wood furniture and can also be used on metal surfaces. The disadvantages are mainly the problems of bubbling in contact with water and paint powder. As with polyester paint, it also has the problem of yellowing.
The varnish variety of polyurethane paint is called polyurethane varnish.
2, interior wall paint
Interior wall paint can be divided into water-soluble paint and latex paint.
General renovations use latex paint. Latex paints are emulsion paints. According to the different substrates, they are divided into two categories: polyvinyl acetate emulsion and acrylic emulsion. The latex paint is made of water as a diluent, which is a kind of lacquer that is easy to use, safe, washable, and has good air permeability. It can mix different colors according to different color schemes.
The paint composition of latex paint consists essentially of water, pigments, emulsions, fillers and various additives. These raw materials are not toxic. As a latex paint, it is likely that the main poison is the organic mercury contained in the film-forming agent ethylene glycol and the fungicide. At present, the market is very fierce about toxic paint on latex paint, mainly caused by the ignorance of the information publishers, these people did not analyze the wall paint what kind of paint is the case that the paint paint is toxic is not a Responsible practices.
At present, the so-called "latex paint" containing a large amount of formaldehyde in the market is actually a water-soluble paint, not a latex paint. Some unscrupulous manufacturers use inferior water-soluble paints to paint latex paint. Therefore, choosing the right goods and maintaining ventilation is an effective way to prevent pollution.
3, exterior paint
The basic performance of exterior latex paint is similar to that of interior latex paint. However, the paint film is harder and has stronger water resistance. Exterior latex paints are generally used on exterior walls and can also be used in high humidity areas such as toilets.
Of course, exterior latex paint can be used internally, but please don't try to use exterior latex paint for external use.
4, fireproof paint
Fire-retardant paint is a kind of flame-retardant paint made of film-forming agent, flame retardant, foaming agent and other materials. Due to the large amount of flammable materials such as wood and fabrics currently used in households, fire prevention has become a topic worthy of mention.
Fourth, the choice of paint species
1, according to their own needs to choose the right kind of paint. You can't blindly pursue a kind of "advanced", let alone buy some inferior products.
2, try to buy these paints in specialty stores or large stores, while paying attention to the pros and cons of its packaging.
3, Do not rely on advertising data, you need to be concerned, but whether the other party meets national standards.
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