Thermoplastic elastomer TPE/TPR, also known as artificial rubber or synthetic rubber. Its products not only have the excellent properties of high elasticity, aging resistance, and oil resistance of traditional cross-linked vulcanized rubber, but also have the characteristics of easy processing and wide processing methods of ordinary plastics. It can be produced by injection molding, extrusion, blow molding and other processing methods. After the corners of the nozzle are crushed, it can be 100% directly used again. It not only simplifies the processing process but also reduces processing costs. Therefore, thermoplastic elastomer TPE/TPR materials have become the latest materials to replace traditional rubber. They are environmentally friendly, non-toxic, comfortable to the touch, and have exquisite appearance, making the products more creative. Therefore, it is also a new type of synthetic material that is more humane and high-grade, and it is also a global standard environmentally friendly material.
Thermoplastic elastomer is a new polymer material between rubber and resin. It can not only replace part of rubber, but also modify plastics. . The dual properties and broad characteristics of thermoplastic elastomers of rubber and plastic make them widely used in the rubber industry to manufacture rubber shoes, tapes and other daily products, as well as hoses, tapes, strips, rubber sheets, rubber parts and adhesives, etc. Various industrial supplies. At the same time, thermoplastic elastomers can also be used in large quantities instead of rubber in the modification of general thermoplastic resins such as PVC, PE, PP, PS, and even engineering plastics such as PU, PA, and CA, bringing a new situation to the plastics industry.
Lubricants are generally divided into external lubricants and internal lubricants, which can increase the fluidity of the formula. External lubricants are mainly used to reduce the friction between materials and equipment, and at the same time play a role in demoulding and increasing the surface feel. Commonly used ones include silicone products, erucic acid amide, oleic acid amide, stearic acid, etc. Internal lubricants are used to reduce the friction between molecules in the molten state of macromolecules, mainly including stearate, PE wax, etc. The amount of lubricant added in different formulas is different. It should be noted that during the debugging process, you cannot blindly pursue the feel and mold release, otherwise it will cause the lubricant to precipitate and cause product quality problems.
TPE lubricants generally include zinc stearate, calcium stearate, etc., which have good lubricity for material processing and can be adjusted The surface gloss of a material. Mainly used to reduce the friction between molecules in the molten state of macromolecules. The general dosage is 1-3 parts, which can be adjusted.
Zinc stearate: Zinc stearate is a white powder, insoluble in water, soluble in hot ethanol, benzene, toluene and turpentine. and other organic solvents; decomposes into stearic acid and corresponding salts when exposed to acid; has fire hazard under dry conditions, auto-ignition point is 900°C; is hygroscopic.
Calcium stearate: Calcium stearate is white powder, insoluble in water, cold ethanol and ether, soluble in hot benzene, benzene and turpentine, etc. Organic solvent, slightly soluble in hot ethanol and ether. It decomposes slowly when heated to 400°C and is flammable. It decomposes into stearic acid and corresponding calcium salts when exposed to strong acid and is hygroscopic.  
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