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        1. 鄭州天順食品添加劑有限公司


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          來源:鄭州天順食品添加劑有限公司 發布時間:2022-11-10 12:08:54 關注: 0 次
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          Stearic acid is a white waxy transparent solid or yellowish waxy solid, which can be dispersed into powder with a slight butter smell. How much do you know about stearic acid? The following potassium hydroxide manufacturer will explain it for you.
          It is white or off white slippery powder or crystalline hard block, and its cross-section has fine needle like crystals with slight luster; It has a slight odor similar to oil and is tasteless. This product is easily soluble in chloroform or ether, soluble in ethanol, and almost insoluble in water.
          The freezing point (Appendix VI d) of this product shall not be lower than 54 ℃. Iodine value the iodine value of this product (Appendix Ⅶ h) is not more than 4. Acid value the acid value of this product (Appendix Ⅶ h) is 203 ~ 210. Stearic acid is easy to react with magnesium ions and calcium ions to form magnesium stearate and calcium stearate (white precipitate).
          This product is widely used in cosmetics, plastic plasticizers, release agents, stabilizers, surfactants, rubber vulcanization accelerators, waterproof agents, polishing agents, metal soaps, metal mineral flotation agents, softeners, pharmaceuticals and other organic chemicals. Stearic acid can also be used as a solvent for oil-soluble pigments, a wax pencil smoothing agent, a wax paper polishing agent, and an emulsifier for stearic glycerides.
          Stearic acid is also widely used in the manufacture of PVC plastic pipes, plates, profiles and films. It is a heat stabilizer of PVC and has good lubricity and light and heat stability.
          In the application of PVC pipes, stearic acid helps to prevent "coking" during processing, is an effective heat stabilizer in the processing of PVC films, and can prevent the discoloration of finished films caused by exposure to the sun. Stearic acid has become a functional additive for lubrication and plasticization of filling modified masterbatch.
          Stearic acid can effectively improve the coating and activation effect of inorganic powder and increase the fluidity of materials. When the melt flow rate of materials with a large proportion of inorganic powder is required, appropriately increasing the content of stearic acid can significantly increase the melt flow rate of materials.
          However, the amount of stearic acid in the filling modified masterbatch also has a limit value, which is generally controlled at about 1% of the total mass. If the amount of additive is too large, the quality performance of plastic products will decline, and the mechanical devices such as the die lip position of the plastic product production equipment will appear sticky substances, which will affect the production efficiency and product quality. So do you understand? Come to our website for more information http://www.jur90321ufdhofhss.com Consult!


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