Physical and chemical properties
Polyvinyl chloride (PVC) is a polar amorphous thermoplastic polymerized from vinyl chloride monomer. PVC has the following significant physical and chemical properties:
Chemical resistance: PVC has high resistance to acids, alkalis and salts, but is susceptible to corrosion by certain organic solvents.
Mechanical strength: PVC has good mechanical properties, including tensile strength and impact resistance.
Electrical insulation: As a non-polar material, PVC has excellent electrical insulation properties.
Weather resistance: PVC has good resistance to ultraviolet rays and chemicals in the atmosphere, making it suitable for outdoor use.
Thermal stability: PVC needs to add heat stabilizers during processing to prevent thermal decomposition.
processing method
PVC can be made into different products through a variety of processing techniques:
Extrusion: used to produce PVC pipes, door and window frames, cable insulation, etc.
Injection molding: suitable for manufacturing small to medium-sized plastic products, such as toys, electrical casings, etc.
Blow molding: used to produce hollow bottles, containers and other large products.
Calendering: used to make PVC films and sheets, often used in packaging materials and decorative materials.
Thermoforming: Used to create articles with complex geometries, such as automotive parts and construction assemblies.
Application areas
PVC has a wide range of applications. Here are some major application examples:
Construction Industry: PVC is widely used in the construction industry for piping systems, window frames and flooring materials.
Medical devices: Due to its biocompatibility, PVC is used to make disposable medical devices such as blood bags and infusion tubes.
Automotive industry: PVC is used to manufacture interior automotive components such as dashboards and door panels.
Electronics industry: PVC is used for the insulation layer of wires and cables and the casing of electronic equipment due to its good electrical insulation.
Packaging materials: PVC film is used for food and non-food packaging because of its good sealing and chemical resistance.
Toy Manufacturing: PVC is used to manufacture children's toys and other entertainment products due to its processing properties and cost-effectiveness.
