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Polyvinyl chloride is originally a rigid plastic, and its glass transition temperature is 80~85C. After adding the plasticizer, the glass transition temperature can be lowered, which is convenient for processing at a lower temperature, and the flexibility and plasticity of the molecular chain are increased, and it can be made into a soft product that is elastic at room temperature. Commonly used plasticizers are dioctyl phthalate and o-ester. Generally, the amount of plasticizer added to soft PVC plastics is 30% to 70% of that of PVC.
PVC plastics can generally be divided into two categories: hard and soft. The softness of the product mainly depends on the amount of plasticizer and the selection of plasticizer. No plasticizer is added in the processing of hard products, while a large amount of plasticizer is added in soft products, such as PVC air hoses.
Polyoxyethylene can be processed into various profiles and products after adding stabilizers, lubricants, colorants, and fillers during processing.
The PVC transparent hose is made of polyvinyl chloride resin by adding a large amount of plasticizer, a certain amount of stabilizer, and other additives through extrusion molding. It has the characteristics of transparency and smoothness, lightweight, beautiful appearance, softness, and good coloring. It is widely used in construction, chemical industry, family, for water infusion, conveying corrosive medium, and also used as wire casing and wire insulation layer.
