SBR compound – Styrene Butadiene Rubber

Mel Art and Industrial Rubber Company, due to years of experience and expertise in the field of styrene rubber or SBR compound formulation consultation, as well as having expert and experienced staff, is ready to provide styrene rubber compound formulation consultation.

What is styrene butadiene rubber (SBR)?

Styrene Butadiene Rubber or SBR, also known as Butadiene Styrene Resin or Buna S, is a type of rubber combination of styrene and butadiene. Other brand names: Ameripol Synpol, Europrene ), Kralex, Polysar, Plioflex, Copo Carbomix, Nipol, Solprene

What is styrene butadiene rubber compounding?

If we want to express styrene butadiene rubber compounding in one sentence in a simple and concise way, we should say “Styrene rubber compounding is actually the process of mixing elastomer with its required additives by a compounder.” will be done.

Who is the styrene rubber compounder (SBR compounder)?

Styrene rubber compounder is basically engineering that adjusts and determines all things related to rubber compounding from zero to hundred. The quality of the rubber product resulting from mixing or the compound completely depends on the raw materials, experience, science, expertise, and the type of performance of the compounder. In fact, if any of the determining factors of a quality rubber compound, such as the raw materials of SBR rubber Compander engineer’s science and expertise, his experience, the type and method of his work, have a very effective and important role in the production of the primary product and finally the final product or products that are consumed by the customer or industrial units.

What are the goals of compounding?

Mixing tires or styrene rubber compounding generally pursues 3 main goals, which are as follows:

1- Controlling the rheological behavior of rubber

2- Improving the physical, mechanical and dynamic properties of rubber

3- controlling the cost of tires

Styrene rubber compound formulation

The formulation of styrene rubber compounds includes the following:

Elastomers: It is a polymer base or an alloy of different polymer bases.
Strengthening factors: It is used to improve the physical, mechanical and dynamic properties of the product.
Process aids: include plasticizers, homogenizers, retarders, and several others to control the compound’s rheological properties during mixing and shaping.
Stabilizing systems: against oxygen and ozone and acid and base
Baking system: includes baking agent, accelerator and activators.

How to choose elastomer in formulation design
Based on the environment in which the final piece is supposed to work. (Chemical resistance). Based on the desired physical, mechanical and dynamic properties for the final product, such as hardness and tensile strength, elongation percentage, resilience, compressive strength, etc. Other technical demands or requests of the customer, which are usually presented to the desired organization under the title of test plan.
Measurable physical, mechanical and dynamic properties in nitrile rubber compound formulation

• Hardship
• Tensile strength
• Percentage increase in length
• pressure mana
• heat resistance
• Chemical resistance
• Ozone resistance
• Other tests

What is mastication in the rubber compounding process?

If we want to provide a definition of mastication, we can say that the term mastication is “putting the elastomer under tension to reduce the molecular mass and create viscosity (thickness) in the product with the aim of improving the mixing and quality of the styrene rubber compound.”

Mastication in the production of styrene rubber compounds can be done in two ways:

1- Physical mastication
2- Chemical mastication in compound formulation (use of peptizers)

A raw elastomer can never be used alone because the raw elastomer is not processable on its own and resists mechanical processes. This resistance to processability is called Nerve, the higher the Nerve of a rubber, the more difficult the processability of that rubber will be. Practically Nerve means spending time and energy in rubber processing and this means more cost for processing in the field of styrene rubber or styrene rubber compound production. and add more quality to the raw elastomer.