Calcium Stearate in CPE Applications: Improving Processing and Impact Resistance

Calcium Stearate in CPE Applications: Improving Processing and Impact Resistance

The manufacturing of candles often involves the use of calcium stearate as a wax hardener and binder. It increases the melting point of the wax, making the candles more durable and less likely to deform during burning. Additionally, it helps to bind the wax and fragrance oils together, enhancing the scent throw of the candles.

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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.

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Ingredients of Calcium Stearate

Calcium stearate is primarily composed of stearic acid and calcium hydroxide. Stearic acid, a long-chain fatty acid, acts as the main raw material for calcium stearate production. It is obtained from vegetable or animal sources or can be synthesized through chemical processes. Calcium hydroxide, also known as slaked lime or hydrated lime, serves as the source of calcium ions required for the formation of calcium stearate. These ingredients undergo a reaction to produce calcium stearate, which is then processed and prepared for various applications.

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.

Importance of Calcium Stearate

Calcium stearate holds significant importance in the manufacturing and processing of various materials and products. Its lubricating and release properties improve production efficiency, enhance product quality, and reduce operational costs. The stabilizing function of calcium stearate ensures the long-term performance and durability of materials, particularly in high-temperature applications. Additionally, its anti-caking properties enable accurate dosing and improve the shelf life of powdered substances. Overall, calcium stearate plays a crucial role in optimizing the performance, functionality, and appearance of a wide range of 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. 

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