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By Lzh | 06 February 2023 | 0 Comments

Why zinc stearate is one of the representative varieties of main metal soap heat stabilizers?

What is zinc stearate?
Zinc stearate is a white fine powder with a melting point of 118-125 and a relative density of 1.095. It feels smooth, has no sand feeling, has a fat smell, is easy to absorb moisture, is non-toxic, greasy, flammable, insoluble in water, and soluble in hot ethanol, benzene, toluene, turpentine, and other organic solvents. It decomposes into stearic acid and corresponding zinc salt when meeting strong acid, is heated and dissolved in an organic solvent, and then cooled to form a colloidal substance. It has fire hazards under dry conditions, and its self-ignition point is 900 , Can be used for products in contact with food.
Use of zinc stearate
Zinc stearate is a kind of multifunctional additive used in many polymers. Based on its unique and diversified physical and chemical properties, it has been widely and important applied in many important fields such as plastics, coatings, greases, textiles, construction, paper making, pigments, and so on, and new application ways have been developed constantly. Its main application fields are coatings, plastics, and rubber industries. For example, it can be used as a heat stabilizer, lubricant, or grease in the resin field, Accelerators or thickeners are usually used as heat stabilizers for PVC resins. PVC (polyvinyl chloride) is currently one of the most widely used plastics in the world after polyethylene and has won a broad market with its flame retardancy, insulation, wear resistance, and other properties. PVC resins and their products are prone to thermal degradation and aging due to their structural defects, and their processing temperature is higher than 160 than the decomposition temperature of 120 .
Preparation of zinc stearate
The earliest production process of zinc stearate is a wet method, namely the double decomposition method. Its process is rough as follows: first, stearic acid and caustic soda are reacted in a large amount of water medium to obtain sodium stearate, then zinc salt is added for double decomposition to obtain zinc stearate and corresponding pure water-soluble sodium salt. After filtering, a large amount of clean water is used for rinsing, drying, and crushing to obtain zinc stearate. The whole process has a long production cycle, complex operation, high labor intensity, and high production cost, The amount of wastewater is large, so it is necessary to improve the production process of zinc stearate.
Price of zinc stearate
Zinc stearate particle size and purity will affect the product's price, and the purchase volume can also affect the cost of zinc stearate. A large amount of large amount will be lower. The price of zinc stearate can be found on our company's official website.
Zinc stearate supplier
Luoyang Tongrun Nano Technology Co. Ltd.  (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including zinc stearate, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective zinc stearate, you are welcome to contact us or inquire at any time.

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