How SBR is Made

Styrene Butadiene Rubber (SBR) is a synthetic rubber that is widely used in various industries, including the automotive, construction, and footwear industries. SBR is known for its excellent durability, high abrasion resistance, and ability to withstand extreme temperatures. In this article, we will explore how SBR is made, including the manufacturing process, types of processes, factors affecting SBR properties, and quality control measures.

Overview of the SBR Manufacturing Process

SBR is made by combining styrene and butadiene in a reactor vessel, along with a catalyst and other additives. The mixture is then heated and agitated to promote polymerization, which forms long chains of rubber molecules. The resulting SBR latex is then coagulated to remove excess water and purified to remove any impurities.

Types of SBR Manufacturing Processes

There are two main types of SBR manufacturing processes: emulsion polymerization and solution polymerization. Emulsion polymerization is the most common method, which involves the use of water as a solvent to dissolve the monomers and catalyst. Solution polymerization uses organic solvents to dissolve the monomers and catalyst, which results in a more uniform product.

Factors Affecting SBR Properties

Several factors can affect the properties of SBR, including the ratio of styrene to butadiene, the molecular weight of the polymer chains, and the type and amount of additives used. These factors can affect the tensile strength, elasticity, and other properties of the resulting SBR product.

Quality Control in SBR Manufacturing

Quality control is a crucial aspect of SBR manufacturing to ensure that the final product meets the required specifications and standards. We implement strict quality control measures throughout the manufacturing process to ensure that our SBR products meet the highest standards.


In conclusion, SBR is a synthetic rubber that is manufactured through a complex process that involves several steps. Hengli Group uses advanced technology and equipment to produce high-quality SBR products, with a commitment to quality control and customer satisfaction. By understanding the SBR manufacturing process, businesses can make informed decisions about using SBR products in their applications.

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