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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.
Advantages of Calcium Stearate
The use of calcium stearate offers several advantages. Firstly, it improves the processing properties of materials by reducing friction and enhancing flowability. This results in better production efficiency and reduced equipment wear. Secondly, calcium stearate acts as a mold release agent, facilitating easy demolding and preventing surface defects. Additionally, it provides stabilization to materials, protecting them from heat degradation and improving their durability. Moreover, calcium stearate acts as an effective anti-caking agent, ensuring the free-flowing and accurate dosing of powdered substances.
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.
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.
Characteristics of Calcium Stearate
Calcium stearate possesses specific characteristics that contribute to its functionality and versatility. It is a white, odorless, and fine powder with good dispersibility. It is insoluble in water but soluble in organic solvents. Calcium stearate has a high melting point, providing thermal stability in high-temperature processes. Furthermore, it exhibits excellent lubrication, release, and anti-caking properties. These characteristics make calcium stearate suitable for various applications across different industries.
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.