Paint: According to national standards is the common name of paint, because the past paint is mainly natural vegetable oil (oil, pine, etc.) produced, for thousands of years has been using the name paint. With the continuous development of science and technology, a variety of synthetic resins have mostly or completely replaced the use of vegetable oil, if the re-titled "paint" is not suitable, so the national standard determines the use of the name "paint" as the general term for paint.
Coatings: Liquid or solid materials (a mixture of added or not added pigments) that can be applied to an object surface to form a solidly attached, continuous, organic polymer compound or inorganic compound coated with protective, decorative and special properties (e.g. insulation, corrosion protection, marking, etc.)
. For some specific products, it is customary to use "paint" for coatings. For example: alcoholic acid and paint, lipid tone and paint, external wall latex paint, car paint, alcoholic acid anti-rust paint and so on.
the composition of
paint, regardless of the variety and shape of paint, are composed of the following three basic substances.
film-forming substances: also known as binders, film-forming substances are mostly organic polymer compounds such as natural resins (scented, large paint), coatings (oil, flax oil, soybean oil, fish oil, etc.), synthetic resins and other mixed ingredients, after high temperature reaction, there are inorganic combinations of paint (e.g. inorganic zinc-rich paint).
film-forming substance description: the basic composition of the paint, is the coating can independently form a certain strength, continuous solid film material.
a variety of film-forming substances according to national standards a total of 17 categories:
(1) oil; (2) natural resin; (3) phenolic resin; (4) asphalt; (5) alcoholic acid resin; (6) amino resin; (7) nitroculose; (8) other cellulose; (8) 9) perchloroethylene resin; (10) olefin resin; (11) acrylic resin; (12) polyester resin; (13) epoxy resin; (14) polyurethane; (15) elemental organic matter; (16) rubber; (17) others.
film material is the main body of the coating, which determines the performance of the paint film. If there is no film-forming material, pigments and auxiliary materials alone cannot form a paint film.
secondary film-forming substances: including a variety of pigments, body pigments, rust-proof pigments.
paints provide color and cover for the paint film, improve the protective performance and decorative effect of the coating, and the weather-resistant pigments can improve the life of the paint.
body pigment can increase the thickness of the paint film, using its own "flaky, needle-like" structure performance, through the pigment stacking, the formation of fish scale paint film, improve the life of the paint film, improve water resistance and anti-rust effect.
anti-rust pigment through its own physical and chemical anti-rust action, to prevent the surface of the object by the atmosphere, chemical corrosion, metal surface rust.
auxiliary film-forming substances: including a variety of additives, solvents.
additives play a very important role in the production, storage, use and formation of paint film. Although the amount used is very small, but the performance of the paint film has a great impact. Water-like paint needs additives to meet the production, construction, storage and formation of paint film. The level of paint additives also represents the level of national paint. Solvents, also known as "dispersion media" (including various organic solvents, water), are mainly diluted into film substances to form a viscous liquid for production and construction. The mixture of film substation and dispersion medium is often called paint.
paint products are relatively numerous, the previous classification did not have a unified method, for this reason the country has developed a unified classification standards, that is, to paint film-forming substances based on classification, if there are two or more film-forming substances, then according to the paint film play a major role in a substance-based. According to the main film-forming material types in the paint are mainly divided into nitro paint, polyurethane paint, etc. ;
by status, paint can be divided into water-based paint and oily paint. Nitro paint, polyurethane paint, etc. belong to the oily paint.
can be divided into volatile paint and non-volatile paint according to the form of action.
According to the decorative effect can be divided into varnish, color paint and translucent paint three, varnish refers to the paint can still see the texture and color of the wood itself after painting, such products are suitable for high-level and wood textured furniture decoration. After painting the paint film is smooth and full, the appearance is crystal clear, the construction is simple and easy, the color paint will completely cover the color of the wood itself after painting, only reflect the color of the paint itself. These products are suitable for splints or density plates; translucent paint refers to the texture of the wood itself after painting is clearly visible and has a coloring effect. This type of product is suitable for wood-printed clear and loose wood doors, windows, furniture, etc.
According to the texture of the wood catheter divided into open (bottom finish) and closed (face finish), open paint is a completely exposed wood surface pipe hole coating process, its main components are polyurethane, small concentration, the performance of wood holes obvious, clear texture, paint coating volume is small, light, natural texture, can be repaired twice. However, its high cost and high demand for spraying technology. Closed paint is a wood pipe hole buried deep in the transparent coating layer as the main feature of a coating process, its main components are unsaturated resin, high concentration, the performance of the furniture surface coating film plump, thick, smooth surface.