Lubrication
In rubber processing, various types of lubricants are added to rubber compounds to facilitate processing and improve the flow properties of the material. Barium stearate serves as an effective lubricant due to its ability to reduce friction between polymer chains and processing equipment. With a high melting point of 285-290 degrees C, Barium Stearate can be used as lubricant during high temperature extrusion, molding, or calendaring processes involved in rubber manufacturing, ensuring smoother processing and preventing sticking or tearing of the rubber material.
Drying Agent
Barium stearate also acts as a drying agent in rubber compounds. During the vulcanization process, where rubber is cross-linked to improve its mechanical properties and durability, moisture can interfere with the chemical reactions. Barium stearate helps absorb moisture and facilitates the drying of rubber compounds, ensuring proper curing and enhancing the quality of the final rubber products.
Compatibility
Barium stearate is compatible with various types of rubber formulations, including natural rubber, synthetic rubbers like styrene-butadiene rubber (SBR) and ethylene propylene diene monomer (EPDM), as well as thermoplastic elastomers (TPEs). Its ability to disperse uniformly within the rubber matrix ensures consistent lubrication and drying performance throughout the processing stages.
By serving as a drying lubricant, barium stearate contributes to the efficient and effective processing of rubber materials, resulting in improved productivity, quality, and performance of rubber products. However, as with any chemical additive, it’s important for manufacturers to adhere to safety regulations and guidelines regarding the handling, usage, and disposal of barium-containing compounds in rubber processing applications.