PVC Preparation Method
Jun 15, 2018
Vinyl chloride can be made from ethylene, chlorine and catalyst by substitution reaction.
Due to its fireproof heat effect, polyvinyl chloride (PVC) are widely used in all walks of life all kinds of products: fiber wire skin, skin, shoes, handbags, bags, decorations, signs and billboards, building decoration supplies, furniture, hang act the role ofing, roller, pipes, toys, such as the famous Italian "Rody" jump vault), door, door, auxiliary medical supplies, gloves, some food tin foil, and fashion, etc.
PVC is prepared by free radical addition polymerization. The polymerization methods are mainly divided into suspension polymerization, emulsion polymerization and bulk polymerization. To add pure water, dispersants, liquefaction of VCM monomer into the reaction kettle, and then join the initiator and other additives, heating up to a certain temperature after the VCM monomer free radical polymerization reaction generated PVC particles. Continuous stirring keeps the particles uniform in size and keeps the resulting particles suspended in water. In addition, there is the production of PVC paste resin by micro-suspension method.
