polyvinylidenfluoridpolymerer

Polyvinylidene fluoride (PVDF) is a synthetic fluoropolymer known for its exceptional chemical resistance, thermal stability, and mechanical properties. Chemically, it is composed of repeating units of vinylidene fluoride (CH₂–CF₂), giving it a semi-crystalline structure that enhances its durability and performance across various applications. PVDF was first developed in the 1960s by the company Solvay S.A. and has since become a key material in industries requiring high-performance polymers.

The polymer exhibits a high melting point of approximately 176°C (350°F), making it suitable for applications in harsh environments. It is resistant to corrosion, UV radiation, and a wide range of chemicals, including acids, bases, and organic solvents. Additionally, PVDF possesses good electrical insulation properties and can withstand temperatures from -60°C to +150°C (-76°F to +302°F), depending on the grade.

Common applications of PVDF include coatings for corrosion protection in industrial settings, membranes for water purification and gas separation, and components in electrical and electronic devices. Its flexibility and strength also make it useful in piping systems, medical devices, and automotive parts. The material is often blended with other polymers to improve processability or tailor specific properties for specialized uses.

PVDF is produced through free-radical polymerization of vinylidene fluoride monomers, typically in an aqueous emulsion or suspension process. The resulting polymer can be processed using techniques such as extrusion, injection molding, and coating. Due to its high cost compared to other plastics, PVDF is primarily used in niche applications where its superior performance justifies the expense.