The Difference Between Styrene Butadiene Rubber SBR, ESBR and SSBR! Factory Suppliers Manufacturers Quotes

The Difference Between Styrene Butadiene Rubber SBR, ESBR and SSBR!

SBR, styrene-butadiene rubber is the backbone of the rubber industry, is the largest variety of general synthetic rubber, but also the earliest realization of industrial production of synthetic rubber varieties.

Its physical properties, processing properties and product properties are similar to those of natural rubber. Some properties such as wear resistance, heat resistance, aging resistance and vulcanization speed are better than those of natural rubber. It can be used with natural rubber and a variety of synthetic rubber. It is widely used in tires, rubber belts, hoses, wires and cables, medical appliances and various rubber. Rubber products production and other fields, is the largest general synthetic rubber varieties, but also the earliest realization of industrial production of rubber varieties.

According to polymerization process, styrene butadiene rubber is divided into emulsion styrene butadiene rubber (ESBR) and SSBR. Compared with the dissolved styrene-butadiene rubber process, the emulsion styrene-butadiene rubber process has more advantages in cost saving. About 75% of the global SBR plant capacity is based on the emulsion styrene-butadiene rubber process. Emulsion styrene-butadiene rubber (SBR) has good comprehensive properties, mature technology and wide application. The production capacity, output and consumption of SBR are in the first place.

Oil-filled styrene-butadiene rubber (SBR) has many advantages, such as good processability, low heat generation, low temperature flexibility and so on. When used in tread rubber, it has excellent traction performance and wear resistance. After oil-filled, the rubber plasticity is enhanced, and it is easy to mix. At the same time, it can reduce costs and increase production.

Emulsion polymerized styrene butadiene rubber ESBR

ESBR is made from butadiene and styrene as the main monomer and other auxiliary chemical raw materials. Under certain technological conditions, styrene butadiene rubber is first generated by emulsion polymerization, and the unconverted monomer in the mortar is removed, and then the product glue is produced through coagulation and drying processes.

Production status of emulsion polymerized styrene butadiene rubber (ESBR) in China

There are 6 sets of ESBR production facilities in China.

The first set of equipment was put into operation by PetroChina Lanzhou Petrochemical Company in 1960, and its production capacity was 5 in 2007. Fifty thousand tons. In 2008, Lanzhou Petrochemical added two new production lines with independent intellectual property technology, increasing the production capacity of 100,000 tons of environmental protection ESBR.

The second sets of equipment were put into operation in 1982 by the PetroChina Jilin Petrochemical Co. The low temperature emulsion polymerization technology introduced from JSR company in Japan in 1976 has been used in 1982. At present, the production capacity of the device has reached 160 thousand T.

The third unit was completed by Sinopec Qilu Petrochemical Company in 1978 and imported the technology and equipment from Japan Ruiweng Company. It was put into operation in 1987. The annual production capacity reached 130,000 tons. In 2008, Qilu Petrochemical Company is expanding two production lines. The annual production capacity will be increased by 100,000 tons. After commissioning in 2009, the total ESBR capacity of Qilu Petrochemical Company will be reached. 230 thousand T;

The fourth set of ESBR production plant was built and put into operation by Shenhua Chemical Industry Co., Ltd. in 1998. The initial annual production capacity was 100,000 tons. Through further tapping the potential, the annual ESBR production capacity of this plant has reached 180,000 tons.

The fifth set of 100 thousand tESBR installations was put into operation in Nanjing Yangzi Petrochemical Jinpu Rubber Co., Ltd. in June 2007.

The sixth set is a new ESBR production plant built by Bridgestone in Huizhou, Guangdong Province with an annual production capacity of 50,000 tons. It was built and put into operation in 2008 using JSR technology from Japan. In 2007, the total ESBR production capacity of China was 59. 50 thousand T, up to 77 in 2008. 50 thousand T will reach 87 in 2009. 50 thousand T.

The production technology of emulsion styrene-butadiene rubber gradually matured in the late 1920s. Since then, the process has been continuously improved, and toward the direction of large-scale plant development, the level of automation control has been significantly improved, and has reached a fairly advanced level.

At present, great progress has been made in improving monomer conversion rate, saving energy and reducing consumption of emulsion styrene-butadiene rubber. Breakthroughs have also been made in resolving the contradiction between rolling resistance and wet skid resistance of emulsion styrene-butadiene rubber, optimizing product performance and adapting to market demand.

Through the development of new functional initiator, high efficiency and environmental protection new additives, the introduction of the third monomer, improve the binding styrene content and other technologies, the performance of emulsion polystyrene-butadiene rubber was optimized. Significant progress has been made in the development of environmentally friendly emulsion styrene-butadiene rubber (EPSBR) by using environmentally friendly additives and filling oils.

Solution polymerized styrene butadiene rubber SSBR

Soluble styrene-butadiene rubber (SSBR) was synthesized from butadiene and styrene as main monomers by anionic polymerization with organic lithium compounds as initiator in hydrocarbon solvents. The product adhesive was produced by coagulation and drying after adding antioxidant and other additives. Soluble styrene-butadiene rubber (SSBR) was first industrialized by Phillips in 1964, and Firestone in 1969. At the same time, Shell Chemical Company also successfully launched block copolymers prepared by lithium-based catalysts and realized industrial production.

According to the polymerization mode, there are two main polymerization processes of SBR: batch polymerization and continuous polymerization. According to the solvent recovery method, it can be divided into two types: direct drying method and wet method (stripping) drying method. Batch process operation flexibility is large, switch between different brands is flexible. Compared with batch process, continuous process has the advantages of low energy consumption, high production efficiency and stable product quality, which represents the development direction of lithium-based polymer synthesis process such as soluble styrene-butadiene rubber. With the increasing market demand of soluble styrene-butadiene rubber, the continuous polymerization technology with more economic and technological advantages will become more and more important in the production of soluble styrene-butadiene rubber.

Solution polymerized styrene butadiene rubber has abrasion resistance and resistance.

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