What are the different grades of emulsion SBR?

04 Apr.,2024

 

Aqueous emulsion styrene-butadiene rubber (SBR) is typically classified into different grades based on its polymerization process, composition, and properties. There are generally three main grades of emulsion SBR: high styrene-butadiene rubber (HSBR), medium styrene-butadiene rubber (MSBR), and low styrene-butadiene rubber (LSBR).

High styrene-butadiene rubber (HSBR) is a type of emulsion SBR that contains a high level of styrene content, typically ranging from 20% to 50%. This high styrene content results in improved abrasion resistance, hardness, and heat resistance of the rubber. HSBR is commonly used in tire manufacturing, conveyor belts, and industrial rubber goods that require high durability and strength.

Medium styrene-butadiene rubber (MSBR) is another grade of emulsion SBR that contains a moderate level of styrene content, typically ranging from 10% to 20%. MSBR offers a good balance of properties, including abrasion resistance, flexibility, and low-temperature performance. This grade of SBR is commonly used in the production of footwear, adhesives, seals, and other general-purpose rubber applications.

Low styrene-butadiene rubber (LSBR) is the third main grade of emulsion SBR with a low level of styrene content, typically less than 10%. LSBR exhibits excellent resilience, elasticity, and aging properties, making it suitable for applications where flexibility and softness are important, such as in automotive hoses, gaskets, and foam rubber products.

In conclusion, the different grades of emulsion SBR, including HSBR, MSBR, and LSBR, offer a range of properties and characteristics that cater to various industrial and commercial applications. Manufacturers and engineers can select the most suitable grade of emulsion SBR based on the specific requirements of their products and desired performance attributes.

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