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[Chemical Knowledge]：POE production and manufacturing methods and processes.

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POE(Polyolefin Elastomer) is an ethylene/α-olefin two-monomer random copolymer, also known as ethylene elastomer. POE has the dual characteristics of plastic and rubber, so it is widely used in automotive parts, wire and cable, impact modifier, pipe, film and other fields. This article will introduce the manufacturing method of POE.

1. Catalyst Formulation

catalyst is a vital part of the POE manufacturing process, and metallocene catalysts are usually used. The preparation of metallocene catalysts requires the use of methylaluminoxane (MAO) and metallocene compounds. An appropriate amount of metallocene compound is mixed with methylaluminoxane, and stirred uniformly to obtain a catalyst solution.

2. polymerization reaction

In a polymerization reactor, the catalyst solution, ethylene and α-olefin monomers are added according to a certain proportion, and then heated to a certain temperature, and the pressure is adjusted, so that the monomer is polymerized under the action of the catalyst. It is necessary to control the reaction temperature and pressure during the polymerization reaction to ensure that the molecular weight and molecular weight distribution of the product meet the requirements.

3. Degassing and Devolatilization

After the end of the polymerization reaction, the product needs to be degassed and devolatilized to remove unreacted monomers and catalyst residues therein. This process usually uses vacuum degassing or steam purging methods.

4. Granulation and Packaging

The degassed and devolatilized POE product needs to be granulated to obtain particles of a certain shape and size. During the granulation process, attention should be paid to controlling the particle size and particle size distribution, so as not to affect the processing performance and service performance of the product. After granulation, the product is packaged for transportation and storage.

In short, the manufacturing method of POE requires strict control of each process link to ensure product quality and performance. At the same time, for different application scenarios, it is necessary to optimize and adjust parameters such as catalyst, monomer ratio, polymerization conditions, etc., to obtain products that meet different needs.

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