Phenol ketone products

Plastic rubber

Current Location： Home > News > Chemical Knowledge > Manufacturing method and process of PVC resin

[Chemical Knowledge]：Manufacturing method and process of PVC resin

Read： 550 Time：20months ago Source：Transform the World with Simplicity

PVC resin manufacturing method

PVC resin is a widely used chemical production raw material, because of its unique physical and chemical properties, is widely used in building materials, wire and cable, packaging materials, medical equipment and other fields. This article will introduce the manufacturing method of PVC resin in detail.

1. Raw Material Preparation

The main raw material for the manufacture of PVC resin is vinyl chloride monomer (VCM). Vinyl chloride monomer can be produced by the addition reaction of acetylene and hydrogen chloride. In the production process, it is also necessary to add initiators, dispersants, stabilizers and other additives.

2. Polymerization
The manufacturing process of
PVC resin is mainly to convert vinyl chloride monomer into polymer through polymerization reaction. The polymerization reaction can be carried out in various ways such as solution polymerization, suspension polymerization and emulsion polymerization. Among them, suspension polymerization is the commonly used production method at present.

suspension polymerization is to add vinyl chloride monomer, water, dispersant and initiator and other raw materials together into a polymerization kettle, and make the monomer form small droplets in water by stirring and aeration, and carry out polymerization reaction under the action of the initiator. It is necessary to control the temperature and pressure during the polymerization process to keep the reaction stable. After completion of the polymerization, the obtained PVC resin slurry is subjected to dewatering, drying and the like to obtain a powdery PVC resin.

3. post-treatment

PVC resins also need post-treatment to improve their thermal stability and processability. Commonly used post-treatment methods include the addition of heat stabilizers and processing aids. The heat stabilizer can prevent the PVC resin from being decomposed by heat during processing and use, and the processing aid can improve the processing fluidity of the resin.

4. quality control

In order to ensure the quality of PVC resin, strict quality control is required. Including the quality of raw materials, polymerization reaction conditions control, product performance testing and other links. Only through strict quality control can we ensure that the PVC resin produced meets the relevant standards and requirements.

In short, the manufacturing method of PVC resin needs to be controlled and processed through multiple links to ensure product quality and performance. With the continuous progress and application of science and technology, the manufacturing technology of PVC resin is also constantly improving, providing a better guarantee for the application of various fields.

Previous： Production and manufacturing method and process flow of polyhexamethylene adipamide

Next： AS resin production and manufacturing methods and processes.

News Categories