Yuan lei small class | powder people must know the classification of common raw materials for powder coatings!

Release time:

2024-01-29 09:38


Yuan lei small class | powder people must know the classification of common raw materials for powder coatings!


Powder coating is made of resin, curing agent and other film-forming substances with additives, pigments and fillers by special equipment. It is widely used in household appliances, automobiles and transportation, building materials, equipment and tools and other related industries to play a role in decoration and protection. The new polymer materials, through market understanding and actual production and application.



The following is a small compilation of Yuan Lei to show you the classification of raw materials:




Powder coatings belong to the category of organic polymers in the chemical industry. Organic polymer is a kind of high relative molecular mass of the molecular aggregation of compounds, also known as polymers, macromolecules and so on. Generally, molecules with a relative molecular mass higher than 10000 are called macromolecules.

Since most polymers are made by small molecules through polymerization, they are often called polymers or polymers, and small molecules used for polymerization are called "monomers". Their relative molecular mass can range from tens of thousands to several million or more, but their chemical composition and structure are relatively simple, and they are often composed of numerous (n) small structural units arranged in a repeated manner. n is called the degree of polymerization.

Similar to this kind of compound its monomer component is relatively fixed, the production of raw materials is relatively fixed, through different production process synthesis, product polymerization degree is not the same. Therefore, the process and equipment of each manufacturer are different, resulting in certain differences in each product, but its molecular structure and product components are consistent.


In powder coatings, commonly used polymers are polyester resin, epoxy resin, polyethylene wax 103, polybutyl acrylate 402 (liquid leveling agent), polymethyl acrylate 701 (pure brightening agent), wear resistant agent 756, flame retardant 739, butyral and so on.


chemically pure substance


The substance is composed of molecules or atoms, the so-called pure substance refers to a class of molecules of the same structure of the compound, at the same time with a fixed chemical symbol. Since there is a fixed chemical formula, all its chemical components are the same, so each manufacturer produces the same product, its product composition is the same, product quality will only be related to the manufacturer's advanced equipment, the integrity of the process, the stability of the supply of raw materials, and nothing else. Like TGIC, a commonly used curing agent for powder coatings, also known as triglycidyl isocyanurate, its chemical composition is unique to each manufacturer, but the purity and practicability of products are different due to different equipment and processes of each manufacturer. Similar substances include dicyandiamide and 2-methylimidazole. Hydrogenated castor oil, precipitated barium sulfate, etc.


compound compound


Such compounds are more common in powder coatings, affected by the production process and product characteristics, a lot of powder coating raw materials can not be used alone or a single component can not play the corresponding effect, while the single component of the compound compound performance is not good after the compound product performance. After the raw materials are compounded by various compounds, the product performance is greatly improved and has a strong applicable value.

Common compound of powder coating raw materials: antioxidant B900,3920 wax powder, 1441 wax powder, solid leveling agent, defoamer, electricity booster, sand grain agent, floating agent, curing accelerator 305



mineral powder


The filler is an important part of the powder coating, which not only improves the stiffness and strength of the coating film, but also saves the production cost. And this kind of filler is mostly mineral powder, suchCalcium carbonate,high light barium. At the same time, some minerals through the micro powder surface treatment, the product performance modification can make the powder coating film performance change, like this kind of thixotropic material is also widely used in powder industry, such as organic spray leap soil. Of course, a lot of coloring pigments are also mineral powder, such as ultramarine, titanium dioxide and so on.










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