Polyvinylidene fluoride, or PVDF, is a cost-competitive high performing polymer. PVDF’s inherent purity and extreme hardness make this material ideal for a variety of applications requiring exposure to extreme conditions. PVDF can be used over a wide temperature range from -58 °F (-50 °C) to 302 °F (150 °C) and shows excellent abrasion resistance and very low permeability.
PVDF is melt-processable and its alternating CH2 and CF2 groups result in a polymer with high chemical resistance; it is inert to most aromatic and aliphatic hydrocarbons, acids, chlorinated solvents, and alcohols. PVDF’s chemical resistance likewise carries over to its combustion: PVDF is highly flame resistant and is categorized as a self-extinguishing material. PVDF’s UL 94 V-0 rating means that even if the material ignites, it will burn no more than 10 seconds with no flaming or drips.
PVDF is resistant to UV and gamma radiation enabling it to tolerate extended exposure to sunlight. PVDF exhibits excellent resistance to creep, fatigue, and cut through and maintains its dielectric strength of up to 1700 volts/mil throughout its wide service temperature range. PVDF is melt-weldable and thermoformable.
PVDF tubing (also known as Kynar®) is used in many industries such as aerospace, oil and gas exploration, automotive, electronics, semiconductor, food and beverage, pharmaceutical, fiber optics, and medical. In addition to its good performance-to-cost ratio, PVDF’s physical properties have made it a popular choice for applications requiring flexibility without sacrificing performance.