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Dongguan Hanwei Technology Co., Ltd. is a high-tech enterprise integrating R&D, production and sales. Its products are mainly used in petrochemical, rubber and plastics, coatings, papermaking and other fields. The main products are zinc stearate , calcium stearate , magnesium stearate , other fatty acid salts, fatty acid esters, water-based zinc stearate, water-based calcium stearate, wood-plastic lubricants, PE wax, wax emulsion and Various rubber additives, etc.
Functions of Calcium Stearate
Calcium stearate serves multiple functions in different applications. Primarily, it functions as a lubricant, reducing friction and improving the flow properties of materials during processing. It also acts as a release agent, preventing materials from sticking to molds or equipment surfaces. Furthermore, calcium stearate functions as a stabilizer, enhancing the heat resistance and durability of materials. Additionally, it serves as an anti-caking agent, preventing the formation of clumps and ensuring consistent flow and accurate dosing of powdered substances.
Applications of Calcium Stearate
Calcium stearate finds extensive applications across various industries. In the plastic industry, it is used as a lubricant and mold release agent in the production of PVC pipes, cables, and profiles. In the rubber industry, it is employed as an effective processing aid and mold release agent for rubber compounds. Furthermore, calcium stearate is used as a stabilizer in the production of polyolefins and as an anti-caking agent in powdered food and pharmaceutical products. It also finds applications in coatings, paints, cosmetics, and personal care products.
Process Flow of Calcium Stearate Production
The production process of calcium stearate involves several steps. It typically begins with the neutralization reaction between stearic acid and calcium hydroxide, resulting in the formation of calcium stearate and water. This reaction takes place in a reactor under controlled conditions of temperature and agitation. The resulting mixture is then subjected to filtration or centrifugation to separate the solid calcium stearate from the liquid phase. The obtained calcium stearate is then washed and dried to remove impurities and residual water. After drying, the product is typically pulverized or granulated to achieve the desired particle size and flow properties.
Benefits of Calcium Stearate
Calcium stearate offers several benefits across various industries. Firstly, it acts as an effective lubricant and release agent, improving the flow properties of materials and preventing them from sticking to processing equipment. This enhances the production efficiency and quality of various products. Secondly, calcium stearate functions as an anti-caking agent, preventing the clumping of powdered substances, ensuring consistent flow, and facilitating accurate dosing. Additionally, it acts as a stabilizer, improving the heat resistance and aging properties of materials. Moreover, calcium stearate provides excellent hydrophobicity, making it useful in moisture-sensitive applications.
Frequently Asked Question
Do you have any question?
Calcium stearate is considered safe for use in food products and is approved by regulatory authorities such as the U.S. Food and Drug Administration (FDA) as a food additive. It is commonly used as an anticaking agent, emulsifier, and stabilizer in various food applications.
Yes, calcium stearate is widely used in the pharmaceutical industry. It is commonly employed as a lubricant and flow agent in tablet and capsule formulations. Calcium stearate helps improve the flowability of powders, aids in tablet compression, and prevents sticking during manufacturing processes. It is generally recognized as safe for pharmaceutical use when used within recommended limits.
Calcium stearate is commonly used as a processing aid in plastics manufacturing. It acts as a lubricant and internal/external release agent, helping to reduce friction and improve the flow properties of plastic materials during processing. It facilitates mold release, reduces sticking, and enhances the surface finish of molded plastic products.
Calcium stearate itself is not considered harmful to the environment. It is biodegradable and does not persist in the environment.