Introduction to PVDF Tubing Knowledge

What is PVDF Tubing? Also known as polyvinylidene fluoride tubing, PVDF tubing is a chemical material characterized by high mechanical strength and good radiation resistance. It can be used outdoors for a long time without maintenance. It exhibits excellent chemical stability and is not corroded by acids, alkalis, strong oxidants, and halogens at room temperature. Therefore, it is widely used in petrochemical, electronic and electrical industries, steel plant pickling processes, and the transportation of acid and alkaline solutions.

Material of PVDF Tubing: PVDF piping is constructed from homopolymers of vinylidene fluoride or copolymers of vinylidene fluoride with other minor fluorine-containing vinyl monomers. PVDF resin combines the properties of fluororesins and general-purpose resins. Besides exhibiting good chemical resistance, high temperature resistance, oxidation resistance, weatherability, and radiation resistance, PVDF tubing also possesses piezoelectricity, dielectric properties, and pyroelectricity. It is currently the second largest product among fluoroplastics in terms of production.

Applications of PVDF Tubing: Protection of electronic components in high-temperature, oily environments; insulation and protection of resistors, capacitors, and thermocouples; mechanical protection for various types of metal wires; insulation, protection, and reinforcement of wire ends, splices, and terminals.

Characteristics of PVDF Tubing:

Excellent chemical resistance, not corroded by acids, alkalis, strong oxidants, and halogens at room temperature.

High impact strength, wear resistance, creep resistance, high mechanical strength, and good toughness.

Good heat resistance, non-flammability, with a long-term use temperature range of -40 to 150°C, and high dielectric strength.

Outstanding weatherability, ozone resistance, UV resistance, and nuclear radiation resistance.

Currently, PVDF piping is used for transporting high-purity and ultrapure water. Due to its good chemical stability, cleanliness, and smoothness, PVDF piping has been widely used in the microelectronics industry, achieving good social and economic benefits. PVDF piping exhibits good chemical stability, chemical corrosion resistance, and thermal stability. It can be used for a long time within the temperature range of -62°C to +150°C and can resist all salts, acids, alkalis, aromatic hydrocarbons, halogens, and other media except strong solvents. It is flame-retardant, fatigue-resistant, not easily broken, wear-resistant, self-lubricating, and a good insulating material. Its mechanical strength is high: compared to PTFE, its tensile strength is twice as high, and its compressive strength is six times as high. In terms of wear resistance, it is only slightly inferior to NYLON6 and UHMWPE. When both temperature and pressure are present, its performance is far superior to other plastic pipes. It is mainly used for transporting corrosive media in fields such as waste acid recovery and regeneration in the metallurgical industry.