Kynar – when to use it within a plastic fastener

Kynar Bolt and Nut Example

Kynar Bolt and Nut Example

Developed in the 1960s for chemical handling and wire insulation and jacketing, Kynar®/PVDF is a registered trademark of Arkema Corp. PVDF stands for polyvinylidene fluoride.

Kynar®  / PVDF is a tough, engineering thermoplastic that offers an excellent balance of performance properties. It has the characteristic stability of fluoropolymers when exposed to harsh thermal, chemical and ultraviolet environments.

What are the highlights of Kynar® / PVDF fasteners

  • Kynar®/PVDF is a highly non-reactive and pure thermoplastic fluoropolymer.
  • Kynar®/PVDF has good creep resistance and weatherability.
  • Kynar®/PVDF is currently used in applications requiring the highest purity, strength, and resistance to solvents, acids, bases, and heat. It is known for low smoke generation during a fire.
  • Kynar®/PVDF has an easier melt process than other fluoropolymers because of its relatively low melting point of around 177 °C.
  • Kynar®/PVDF has a low density (1.78) and lower cost than other fluoropolymers.
  • Kynar®/PVDF has a useful temperature range of -148°F to 302°F
  • Can be injected, molded, or welded. Used in the injection molding process.
  • Kynar®PVDF is commonly used in the chemical, wet bench, modular clean room, medical and defense industries, chemical industry companies, as well as in lithium ion batteries.
  • Tensile Strength at Yield by MPa/psi standards 5075-7250 with a Max service temp of 300° Fahrenheit.

 General Properties of Kynar® / PVDF 

  • Strength and toughness
  • Weather resistant
  • UV resistant
  • Radiation resistant
  • High thermal stability
  • Fungus resistant
  • Ozone resistant

In which applications can you use Kynar® / PVDF within Plastic Fasteners?

Kynar® is used in applications requiring the highest purity, strength, and resistance to solvents, Sulphuric acid, Carbon Tetrachloride, Butyric Acid, Boric Acid Aq. and  Benzene Sulphate Aq.

Industries that rely on Kynar®  / PVDF

Kynar® is frequently used in semiconductor production, wet bench, modular clean room, chemical industry companies, and clean room industries.   It is also used in everyday products such as fishing line, musical instrument strings, and lithium-ion batteries.

Some general markets that Kynar is used:

  • Automotive and transportation
  • Consumer goods
  • Electronics and electrical:  Battery and semiconductor
  • Food industry and agrochemicals
  • Oil and gas, and renewable energy
  • Water and environment:  Corrosive waste drainage and water purification

Summary

When choosing components and fasteners for manufacturing and production, it’s important to consider the application, the environment of the finished products and the characteristics of the materials available. Plastics, and especially some of the advanced composite materials, make a great choice for many applications and offer exceptional strength and resistance to wear.

Kynar® is a choice within a wide variety of plastic fasteners, but it’s not used in every application.  If you have any questions on the properties of nylon plastic fasteners, or its use within your application, please do not hesitate to contact us.  We’re here to help!