Why lithium stearate can be used as a high-temperature lubricant
Views : 92
Author : Lzh
Update time : 2023-02-04 14:30:44
What is lithium stearate? Lithium stearate is a white powder or colorless crystal. Density: 1.025 g/cm3. Melting point: 220.0-221.5 ℃. It is stable under normal temperature and pressure. It is slightly soluble in water and ethanol; water solubility is 0.09 g/100ml, and ethanol solubility is 0.04 g/100ml. It decomposes into stearic acid and corresponding lithium salt when meeting strong acid. It is insoluble in ethyl acetate and mineral oil. It forms colloids in mineral oil.
Synthesis of lithium stearate Method 1: Dissolve 10 g of stearic acid in 100 mL of 95% ethanol, titrate with 0.5 mol/L of lithium hydroxide ethanol solution (if lithium hydroxide cannot be fully dissolved in ethanol, add water to make it fully soluble), use phenolphthalein as indicator, after the reaction reaches the equivalence point, extract and separate the separated lithium stearate soap. The crude product can be recrystallized with 95% ethanol to obtain the pure product. Method 2: Dissolve sodium hydroxide in water to form a solution, add stearic acid to it, and then fully react and heat it to above 100 ℃. Dissolve lithium chloride in water, cool it to normal temperature, and then add it to the prepared sodium stearate solution for reaction; After the reaction is completed, it is released and dehydrated with a centrifuge; The finished product is dried by airflow drying equipment.
Role of lithium stearate in lubricating oil Lithium stearate is a white powder or colorless crystal, stable at normal temperature and pressure, slightly soluble in water and ethanol, decomposed into stearic acid and corresponding lithium salt in strong acid, insoluble in ethyl acetate and mineral oil, and formed colloid in mineral oil. The main function of grease is lubrication, protection, and sealing. Most grease is used for lubrication, called antifriction grease. Antifriction grease mainly plays the role of reducing mechanical friction and preventing mechanical wear. At the same time, It also plays the role of protecting against metal corrosion and sealing dust. Some greases are mainly used to prevent metal rust or corrosion called protective greases. Lithium stearate can gelatinize mineral oil and a polar solvent. After heating, it can form a colloidal solution. The key is that lithium stearate can improve the pouring point of lubricating oil and the consistency of mortar.
Price of lithium stearate Lithium stearate particle size and purity will affect the product's price, and the purchase volume can also affect the cost of lithium stearate. A large amount of large amount will be lower. The price of lithium stearate can be found on our company's official website.
Lithium 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 lithium stearate, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective lithium stearate, you are welcome tocontact us or inquire any time.
