Understanding Kynar & It’s Applications
Polyvinylidene fluoride (PVDF) resin, Kynar, is extremely non-reactive with many different substances and is a pure thermoplastic fluoropolymer that is often used when a coating that is extremely pure, strong, and able to resist heat, bases, acids, and solvents is needed. It also creates very little smoke when a fire occurs, and it is easier to melt because its melting point is around 350oF, which is quite a bit lower than most other fluoropolymers.
Everyday Kynar Applications
Kynar is classified as a fine powder, and it’s used in a wide variety of applications. In fact, it’s been used since the latter part of the 1960s, although most people still don’t know what it is. So, what can Kynar do for you? Here are several of the ways this material is used in products you probably utilize every single day:
- Storing chemicals in glass and metal containers: Tanks must be lined with Kynar to store things like chlorine and all the halogens in the periodic table. Most of the acids that are extremely high strength must also be stored in tanks that are lined with Kynar. It can also be molded into various shapes to form containers to hold some of these difficult substances.
- As an Insulator: Kynar is more robust than most other polymers that are commonly used as insulators. It can stand up to flames well if the temperature does not get above its burning point. When it reaches its burning point, damage begins to occur. Many kinds of wires are insulated with Kynar. Narrow 30-gauge wire and printed circuit boards are two examples of products that are insulated with this type of coating.
- Sensor-based applications: Pressure sensors and thermal optic sensors are two examples. The reason Kynar works so well in these types of applications is because it has very high piezo-electric and thermal-electric values.
- As an electrode binder: Kynar is often used as a binder material in the electrodes that are on lithium-ion batteries.
- Artificial membranes: This type of material is also used to create artificial membranes that are used in the world of biomedical science.
- Fishing lines: Many types of monofilament fishing lines are made of this type of material. It’s more difficult for fish to see than other materials, and it’s harder, so it can resist abrasion and the sharp teeth of some fish. Since it’s denser than nylon, it also sinks more quickly.
As you can see, there are a variety of different applications for Kynar, most of which are as a coating. However, it can also be used as an additive for paint or in a few other ways. When it is used as a coating, most of the time it is applied via electrostatic powder coating.
If you are looking for a coating solution for your aluminum or steel applications, Coating Solutions can help. For more information about Kynar applications, give us a call today at (651) 762-5700 or contact us online.