Powder coating and coating ingredient

Coating develops rapidly and updates more frequently in the chemical industry, particularly coating associated with buildings, family home is environmental, safety, health and functional. Coatings are an excellent process to protect any object from corrosion and rust. It is often used in interior and exterior decorations with change in appearance. Therefore, coating becomes important and essential and is offered all over the world. Coatings are offered in many forms to satisfy the demands of the customers.

What are the main ingredient of coatings? Film forming matter is the main ingredient of film, including fats, oils, natural resins, synthetic resin products and cellulose derivatives. The film forming matter also included some nonvolatile active diluent, which is to make the paint firmly attached to the coated surfaces to form a continuous film on the main. It is a basis for powder coating and determines the basic characteristics of paint.

Additives such as defoamer, leveling agent, some special functional additives, such as substrate wetting agents. These additives are generally not film, but it plays a very important role on base material forming film and durability.

Pigments are one of the main components of colored coatings (paints). Pigment makes the film colorful and has the ability to cover the coated object so that it plays its role of decoration and protection. Some pigments have functions of improving the mechanical properties of paint films, improving paint durability, provide protection against corrosion, electrical conductivity, flame retardants, etc. Pigment can be divided into natural and synthetic pigments by source; according to chemical composition consists of inorganic and organic pigments; classified by role in the coating, it can be divided into colouring pigments, extenders and special pigments. The mostly used in coating is inorganic pigments, synthetic pigments are widely used also, and now organic pigment developed rapidly.

Solvent including the class of hydrocarbon (mineral oil fine, and kerosene, and gasoline, and benzene, and toluene, and xylene), alcohol, ether, ketone and ester material. The main role of solvent and water is to make the film base material dispersed and formed sticky heavy liquid. It helps construction and improved coated film of some performance. Coatings can be divided into oily paint, fiber paint, synthesis paint and inorganic paint according to the main into film material in coating; It can be divided into solution, LaTeX, Sol, powder, light, light extinction and colorful art paint according to the coating or paint film characters.