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[Chemical Knowledge]：Manufacturing method and process of synthetic rubber

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The manufacturing method
of synthetic rubber
1. Introduction

Synthetic rubber is an important raw material in the production of modern chemicals and is widely used in the manufacture of tires, pipes, seals, soles and other products. With the continuous progress of science and technology, the manufacturing method of synthetic rubber is also developing. This article will introduce several common synthetic rubber manufacturing methods.

2. Emulsion Polymerization

Emulsion polymerization is one of the main methods for producing synthetic rubber. The method is to mix the monomer, water, emulsifier and initiator and other raw materials together to form an emulsion and then polymerize at a certain temperature and pressure to produce rubber particles. The synthetic rubber produced by this method has large molecular weight, narrow molecular weight distribution, and good mechanical properties and processability. At the same time, the emulsion polymerization process is relatively safe and environmentally friendly, and is widely used in the production of various general-purpose rubber and special rubber.

3. solution polymerization method

solution polymerization method is the monomer, initiator and solvent and other raw materials are mixed together to form a homogeneous solution and then polymerized to produce high molecular weight rubber. The synthetic rubber produced by this method has high molecular weight, good mechanical properties and oil resistance. However, the solution polymerization method requires the use of a large amount of organic solvent, which is highly polluting to the environment and high in production cost.

4. suspension polymerization method

suspension polymerization method is to mix the monomer, water, dispersant and initiator and other raw materials together to form a suspension and then carry out polymerization reaction to generate rubber particles. The synthetic rubber produced by this method has higher molecular weight and better processability. At the same time, the production process of suspension polymerization is relatively simple, safe, and the production cost is also low.

5. bulk polymerization method

bulk polymerization method is the monomer and initiator and other raw materials are mixed together, the bulk polymerization reaction, to produce high molecular weight rubber. The synthetic rubber produced by this method has high purity and good mechanical properties. However, the bulk polymerization method requires high temperature and high pressure conditions, high production equipment and technical requirements, and high production costs.

6. conclusion

In short, different synthetic rubber manufacturing methods have different advantages and disadvantages and scope of application. In actual production, the appropriate manufacturing method should be selected according to factors such as product performance requirements, production costs and environmental protection requirements. At the same time, with the continuous progress of science and technology and the continuous improvement of environmental awareness, the future manufacturing methods of synthetic rubber will be more environmentally friendly, efficient and energy-saving.

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