Zinc Stearate Lubricant High-Temperature Resistance, Superior Lubrication

Features

Good high temperature resistance: Zinc stearate has a high melting point, usually around 120℃, which enables it to maintain stable physical and chemical properties in a high temperature environment and is not easy to decompose or volatilize.

In the high temperature processing of materials such as plastics and rubber (such as extrusion, injection molding, etc., the processing temperature is often 160℃-220℃), zinc stearate can effectively play its lubricating role and will not fail due to high temperature, ensuring the smooth progress of the processing process.

Excellent lubrication performance: In the molecular structure of zinc stearate, the long-chain stearic acid group provides good lubricity.

It can form a uniform lubricating film on the surface of the material, reduce the friction coefficient between molecules, and reduce the adhesion of materials on the surface of processing equipment (such as screws, molds, etc.), thereby improving processing efficiency and making the surface of the product smoother and flatter.

In plastic processing, it can significantly improve the fluidity of plastic melt, reduce energy consumption, and improve production efficiency; in rubber processing, it can make rubber mixing more uniform, reduce mixing time, and improve rubber processing performance.

Good compatibility with polymers: It has good compatibility with a variety of polymers such as polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), etc. It can be evenly dispersed in the polymer matrix to form a stable system, which will not affect the mechanical properties, electrical properties and other important properties of the polymer, while enhancing the durability of its lubricating effect.

Auxiliary thermal stabilization: In PVC processing, zinc stearate can play a certain auxiliary thermal stabilization role in addition to the lubrication function. It can react with hydrogen chloride (HCl) produced during PVC processing to inhibit further degradation of PVC, extend the service life of PVC products, and improve the thermal stability of products.

Application areas

Plastic industry: It is widely used in plastic processing as an internal and external lubricant. In the production of rigid PVC pipes and profiles, zinc stearate can improve processing performance, prevent material accumulation at the screw and die head, and improve the surface finish and dimensional accuracy of the product; in PE, PP and other polyolefin injection molding and blow molding products, it can reduce the viscosity of the melt, make the product easier to demold, and reduce the scrap rate.

Rubber industry: used as lubricant and release agent in rubber processing, it can reduce the internal friction between rubber molecules, improve mixing efficiency, make rubber products easier to remove from the mold, and improve the surface quality of rubber products.

Paint and ink industry: In paint, zinc stearate can improve the anti-settling performance of the paint, improve the leveling and glossiness of the paint, and increase the wear resistance and corrosion resistance of the coating; in ink, it helps to improve the fluidity and transferability of the ink, making the printing effect clearer and more uniform.

Other fields: In the powder metallurgy industry, zinc stearate can be added to metal powder as a lubricant to reduce the friction between powder particles, improve the pressing density and the dimensional accuracy of the product; in the cosmetics industry, it is used for powder products such as powder cakes, scented powders, etc., which can increase the fluidity and compressibility of the powder, making the product easier to shape and use.

Precautions

Storage conditions: It should be stored in a cool, dry, well-ventilated warehouse to avoid moisture and direct sunlight. Zinc stearate has strong hygroscopicity, and moisture may affect its lubrication properties and compatibility with other materials.

Safety in use: Zinc stearate is generally non-toxic, but its dust should be avoided during operation, as long-term inhalation may have a certain impact on the respiratory system. Operators should wear appropriate protective masks and gloves to avoid direct contact with the skin and eyes.

Synergy with other additives: In practical applications, zinc stearate is often used in combination with other additives such as heat stabilizers, antioxidants, fillers, etc. When using, pay attention to the interaction between them.

Some additives may react chemically with zinc stearate or affect its lubrication effect, so sufficient testing and optimization are required during formula design.

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