By Lzh | 08 February 2023 | 0 Comments
Why is calcium stearate used as stabilizer and lubricant for PVC?
What is calcium stearate?
Calcium stearate is a fine white powder, non-toxic, insoluble in water, slightly soluble in hot ethanol and hot vegetable oil, and easily soluble in hot pyridine, relative density 1.08 and a melting point of 179 ℃. It has water absorption in the air. It is decomposed into stearic acid and corresponding calcium salt in case of strong acid. It is pure white to yellow-white loose powder, fine, without the sense of sand particles, and has a light special smell. In the air, it has moisture absorption. Its melting point is 179 ℃, insoluble in water, ethanol, and ether, and slightly soluble in hot ethanol. It is often used as an anti-bonding agent and adhesive, Emulsifier, film remover, stabilizer, coagulant, thickener, flavor enhancer, etc. The acid value is 191~203; ash content is 9.9%~10.3%; chloride is less than 200ppm; true density is 1.064-1.0969/cm3, fluidity is 21.2%~22.6% (Carr compressibility index), the free fatty acid is 0.3%~0.5%, melting point is 149-160 ℃, water content is 2.96%, the specific surface area is 4.73~8.03m2/g, sulfate is less than 0.25%
Use of calcium stearate
Calcium stearate is used as the stabilizer and lubricant of PVC. It is non-toxic and free of sulfide pollution. Its long-term thermal stability is good, but its stability is poor. It has a synergistic effect with zinc soap or epoxy compounds. It is mainly used in food packaging, medical appliances, and other soft films and appliances that require non-toxic. In hard products, it can improve the gelling speed when combined with salt-based lead salt or lead soap. It can be used as a halogen absorbent in polypropylene and polyethylene; It can eliminate the residual catalyst's adverse effects on the resin's color and stability. It is also widely used as a lubricant for polyolefin fibers or molded products. It can also be used as a lubricant and release agent for thermosetting plastics such as phenolic, amino, and polyester-reinforced plastics, as well as a thickener for lubricating grease, a waterproof agent for textiles, and a leveling agent for paints.
Safety measures for calcium stearate
(1) If strong alkali is used during saponification, operators should wear labor protection articles
(2) It shall be packed in lined plastic bags and wrapped in woven bags. It shall be stored in a cool, ventilated, and dry place. It shall be stored and transported according to general chemicals. It shall be operated in an airtight manner. It shall pay attention to ventilation. It shall wear dust masks, safety goggles, work clothes, and protective gloves when necessary. Other personnel shall change their work clothes in time. Pay attention to personal hygiene. Isolate the leakage and pollution area, and set warning signs around it. Emergency treatment personnel shall wear gas masks and gloves to avoid dust and carefully sweep up, Put it in a bag and transfer it to a safe place. If there is a large amount of leakage, it shall be collected and recycled or discarded after harmless treatment.
Price of calcium stearate
Calcium stearate particle size and purity will affect the product's price, and the purchase volume can also affect the cost of calcium stearate. A large amount of large amount will be lower. The price of calcium stearate can be found on our company's official website.
Calcium 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 calcium stearate, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective calcium stearate, you are welcome to contact us or inquire any time.
Calcium stearate is a fine white powder, non-toxic, insoluble in water, slightly soluble in hot ethanol and hot vegetable oil, and easily soluble in hot pyridine, relative density 1.08 and a melting point of 179 ℃. It has water absorption in the air. It is decomposed into stearic acid and corresponding calcium salt in case of strong acid. It is pure white to yellow-white loose powder, fine, without the sense of sand particles, and has a light special smell. In the air, it has moisture absorption. Its melting point is 179 ℃, insoluble in water, ethanol, and ether, and slightly soluble in hot ethanol. It is often used as an anti-bonding agent and adhesive, Emulsifier, film remover, stabilizer, coagulant, thickener, flavor enhancer, etc. The acid value is 191~203; ash content is 9.9%~10.3%; chloride is less than 200ppm; true density is 1.064-1.0969/cm3, fluidity is 21.2%~22.6% (Carr compressibility index), the free fatty acid is 0.3%~0.5%, melting point is 149-160 ℃, water content is 2.96%, the specific surface area is 4.73~8.03m2/g, sulfate is less than 0.25%
Calcium stearate is used as the stabilizer and lubricant of PVC. It is non-toxic and free of sulfide pollution. Its long-term thermal stability is good, but its stability is poor. It has a synergistic effect with zinc soap or epoxy compounds. It is mainly used in food packaging, medical appliances, and other soft films and appliances that require non-toxic. In hard products, it can improve the gelling speed when combined with salt-based lead salt or lead soap. It can be used as a halogen absorbent in polypropylene and polyethylene; It can eliminate the residual catalyst's adverse effects on the resin's color and stability. It is also widely used as a lubricant for polyolefin fibers or molded products. It can also be used as a lubricant and release agent for thermosetting plastics such as phenolic, amino, and polyester-reinforced plastics, as well as a thickener for lubricating grease, a waterproof agent for textiles, and a leveling agent for paints.
Safety measures for calcium stearate
(1) If strong alkali is used during saponification, operators should wear labor protection articles
(2) It shall be packed in lined plastic bags and wrapped in woven bags. It shall be stored in a cool, ventilated, and dry place. It shall be stored and transported according to general chemicals. It shall be operated in an airtight manner. It shall pay attention to ventilation. It shall wear dust masks, safety goggles, work clothes, and protective gloves when necessary. Other personnel shall change their work clothes in time. Pay attention to personal hygiene. Isolate the leakage and pollution area, and set warning signs around it. Emergency treatment personnel shall wear gas masks and gloves to avoid dust and carefully sweep up, Put it in a bag and transfer it to a safe place. If there is a large amount of leakage, it shall be collected and recycled or discarded after harmless treatment.
Price of calcium stearate
Calcium stearate particle size and purity will affect the product's price, and the purchase volume can also affect the cost of calcium stearate. A large amount of large amount will be lower. The price of calcium stearate can be found on our company's official website.
Calcium 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 calcium stearate, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective calcium stearate, you are welcome to contact us or inquire any time.
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