Phenol ketone products

Plastic rubber

Current Location： Home > News > Chemical Knowledge > The production and manufacturing method and process of polypropylene.

[Chemical Knowledge]：The production and manufacturing method and process of polypropylene.

Read： 933 Time：20months ago Source：Transform the World with Simplicity

Polypropylene (Polypropylene, referred to as PP) is a widely used plastic material with excellent physical and chemical properties, such as heat resistance, cold resistance, chemical resistance, electrical insulation, low density, high strength and so on. Therefore, polypropylene has an important position in the field of raw materials for chemical production. This article will detail the manufacturing method of polypropylene.

1. Raw Material Preparation

The production of polypropylene ethylene mainly uses propylene as a raw material. Propylene is a colorless, flammable gas that is usually extracted from petroleum cracking or natural gas. Before the production of polypropylene, propylene needs to be purified to remove impurities.

2. Catalyst Preparation

The production of polypropylene ethylene requires the use of a catalyst. At present, the commonly used catalyst is Ziegler-Natta catalyst, which is mainly composed of titanium compound and organic metal compound. The preparation process of the catalyst needs to be carried out under strict anhydrous and anaerobic conditions to ensure its activity.

3. polymerization

Under the action of a catalyst, propylene molecules are polymerized to generate polypropylene. The polymerization reaction is usually carried out under conditions of high pressure and high temperature. The temperature and pressure need to be strictly controlled during the reaction to ensure the smooth progress of the polymerization reaction.

Post -4. Treatment
After completion of the
polymerization, the polymer needs to be post-treated. First, the polymer needs to be removed from the reactor and cooled. The polymer is then pelletized, dried and the like to obtain the final polypropylene product.

5. quality control

In order to ensure the quality of polypropylene products, it is necessary to carry out comprehensive quality control of the production process. Including the purity of the raw materials, the activity of the catalyst, the conditions of the polymerization reaction, the post-treatment process, etc. need to be strictly monitored. At the same time, it is also necessary to carry out quality inspection on the final product to ensure that it meets the relevant standards and regulations.

In short, the manufacturing method of polypropylene ethylene involves multiple links and processes, and requires strict control and operation. Only through scientific methods and equipment can we produce high-quality polypropylene products.

Previous： The production method and process of thermoplastic polyurethane elastomer rubber.

Next： Manufacturing method and process of BOPET film

News Categories