What Is PVC Tubing?
PVC tubing, made from polyvinyl chloride (PVC), is a type of plastic tubing known for its good electrical insulation properties. It is commonly used in electronic devices for insulating wires and terminals, particularly in environments where human contact is likely, thus significantly reducing the risk of electric shock and ignition from dust accumulation.
Applications of PVC Tubing
PVC tubing, with an electrical insulation resistance significantly higher than rubber or polyethylene, is used across various electronic equipment to prevent electric shock and short circuits. It finds use in protecting wiring, especially with the development of PVC heat shrink tubing, which forms a protective coating when heated. PVC resin’s mechanical strength makes it suitable for transporting flammable liquids and chemicals.
Characteristics of PVC Tubing
PVC resin is one of the four major general-purpose plastics, in addition to polyethylene, polypropylene, and polystyrene, known for its versatility and stability in dimensions. It is composed of molecular chains of carbon, hydrogen, and chlorine, and is classified as an amorphous resin among general-purpose plastics. The resin can be processed using various methods, including extrusion molding for PVC tubing. By adding additives, PVC resin can exhibit a range of properties, making it suitable for both rigid and flexible applications. However, its heat sensitivity limits its use in high-temperature environments, leading to the development of cold-resistant PVC Tubing for use in extremely low temperatures.
Types of PVC Tubing
1. General-Purpose PVC Tubing
Used widely in homes for garden hoses, in kitchens and bathrooms for drainage, and various industrial applications. It’s available in different sizes and thicknesses.
2. Pressure-Resistant PVC Tubing
Suitable for high-pressure environments such as industrial piping, pressure vessels, and air conditioning systems. It offers durability against internal liquid and gas pressures.
3. Transparent PVC Tubing
Used in the food and medical industries for its transparency, which allows visual monitoring of the contents. Common applications include beverage piping and medical equipment packaging.
4. PVC Tubing for Electric Wire Protection
Designed to protect electrical wires and cables from environmental damage and electrical interference. It is widely used in industrial facilities and construction sites, offering durability and electrical insulation.