SBR

Core Equipment

Polymerization Reactor: Pressure-resistant and corrosion-resistant, equipped with high-efficiency agitation and heat exchange devices. Coagulation and Extrusion Dryer: Continuous integrated equipment for coagulation, dehydration and drying. Rectification and Stripping Tower: Recovers monomers and solvents to improve utilization efficiency. Automatic Metering and Packaging Equipment: Accurate batching, briquetting and packaging.

Core Technologies

Low-temperature emulsion polymerization control technology to ensure uniform molecular weight and structure High-efficiency initiation and additive compounding technology to improve conversion rate and product performance Continuous coagulation and drying technology to reduce energy consumption and increase production capacity Monomer recovery and environmental protection treatment technology to meet clean production requirements Antioxidant online addition technology to enhance the aging resistance and processing properties of rubber

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产品介绍

SBR, short for Styrene-Butadiene Rubber, is one of the most widely used general-purpose synthetic rubbers in the world. It is a copolymer synthesized from two monomers: styrene and butadiene, through emulsion polymerization or solution polymerization processes. With a balanced combination of properties, SBR has become an indispensable material in various industrial fields.

Physically, SBR is a light yellow to brown elastic solid, with good flexibility, abrasion resistance, and mechanical strength. It has excellent aging resistance and can maintain stable performance under normal temperature and moderate environmental conditions. Compared with natural rubber, SBR has better wear resistance and lower cost, making it a cost-effective alternative in many applications.

The production of SBR mainly adopts emulsion polymerization, which is mature, low-cost, and suitable for large-scale industrial production. The ratio of styrene to butadiene can be adjusted to meet different performance requirements, enabling SBR to adapt to various application scenarios.

SBR’s main application is in the tire industry, accounting for a large proportion of its total consumption, used to make tire treads, sidewalls, and inner liners due to its good wear resistance and elasticity. It is also widely used in other rubber products, such as hoses, belts, gaskets, seals, and daily necessities like rubber shoes and toys. Additionally, it is used as a modifier in asphalt to improve the toughness and durability of road surfaces.

Overall, SBR is a versatile, cost-effective synthetic rubber that plays a vital role in automotive, construction, and daily consumer goods industries, supporting the stable operation of various industrial chains.

Types and Characteristics of Equipment

Type

Type: Styrene-butadiene rubber (SBR) is a butadiene-styrene copolymer and the most typical general-purpose synthetic rubber. It is mainly divided into two categories: emulsion-polymerized styrene-butadiene rubber (ESBR) and solution-polymerized styrene-butadiene rubber (SSBR).

Features

Moderate vulcanization speed, stable vulcanizate properties, and long service life of products.The disadvantage is that its elasticity and low-temperature toughness are slightly lower than those of natural rubber.Widely used in tires, hoses, conveyor belts, shoe soles, adhesives and other fields.

SBR

It is widely used in tires, rubber products and industrial applications.

SBR

SBR is a general-purpose synthetic rubber made from styrene and butadiene.

SBR

It has excellent wear resistance and stable mechanical properties.

Basic Principles and System Composition

Basic Working Principle

Using butadiene and styrene as monomers, polymer latex is formed via free-radical emulsion polymerization or anionic solution polymerization under the action of initiators, emulsifiers, dispersion media and other additives. Solid rubber products are then obtained through coagulation, dehydration and drying.

Overall System Composition

Raw Material Purification and Preparation System: Preparation units for monomers, emulsifiers, initiators, modifiers, etc. Polymerization Reaction System: Polymerization reactors, temperature-controlled heat exchange, metering and conveying equipment Post-Treatment System: Coagulation, water washing, dehydration, drying, forming and packaging Recovery System: Unreacted monomer recovery, solvent distillation, tail gas treatment Automatic Control and Safety System: DCS control, explosion protection, interlock protection

Basic Principles and System Composition

Operating Procedures

Purify raw materials to remove impurities and polymerization inhibitors, and prepare auxiliary emulsions according to the formula. Mix butadiene, styrene and the emulsion, and continuously feed them into the polymerization reactor. Conduct polymerization at low temperature, controlling the temperature and reaction degree. Add a terminator to end the reaction and obtain styrene-butadiene latex. Feed the latex into a coagulation tank to precipitate rubber particles and wash them with water. Remove moisture through extrusion dehydration and expansion drying to obtain dry rubber. Finally, briquette, weigh and package to produce finished styrene-butadiene rubber.