When we look at industrial materials, few substances rival the versatility and functionality of fluoroplastics. PTFE, FEP, and PFA emerge as the leading contenders, each boasting distinctive traits and applications.  

We have broken down the individual properties of these fluoropolymers to help you make the best choice for your applications. 

Firstly, why do we use fluoroplastics? 

Before we dive into the specifics of PTFE, FEP, and PFA, let's first understand the basics of fluoroplastics: 

Extreme Temperature Resistance: They withstand high temperatures effortlessly 

Exceptional Chemical Inertness: Virtually impervious to corrosive substances. 

Low Friction Surface: Ideal for applications requiring smooth movement. 

Non-Stick Nature: Substances glide off effortlessly. 

High Electrical Resistance: Ensures safety in electrical applications. 

Now that we understand why fluoroplastics are often chosen within the industry let’s look more closely at the top 3.

PTFE 

PTFE, or Polytetrafluoroethylene, stands as the founding member of the fluoroplastic family. Discovered in 1938, PTFE revolutionised industries with its unparalleled performance in extreme conditions. 

Key properties of PTFE 

Temperature Resilience: Boasts a continuous working temperature of +260°C, the highest among fluoroplastics. 

Chemical Resistance: Almost impervious to all chemicals. 

Non-Stick Properties: Surfaces remain slick even under extreme conditions. 

Translucent Appearance: Adds a touch of sophistication to applications. 

However, processing PTFE can be challenging due to its non-melting nature, requiring unconventional techniques for moulding and fabrication. 

FEP 

FEP, or Fluoroethylenepropylene, steps in as the meltable sibling of PTFE. While sharing many similarities, FEP offers greater processability, making it a favourite in industries requiring intricate fabrication. 

Key Properties of FEP 

Lower Maximum Operating Temperature: Capable of withstanding temperatures from -200°C to +200°C. 

Chemical and UV Resistance: Maintains its integrity even when exposed to harsh environments. 

Bio-Compatibility: Suitable for applications requiring contact with living tissues. 

Clear Transparency: Ideal for applications where visual monitoring is necessary. 

FEP's ability to be easily moulded and welded makes it an excellent choice for applications demanding flexibility and intricate designs. 

PFA 

Last but not least, PFA, or Perfluoroalkoxy, emerges as the high-temperature champion of the fluoroplastic trio. Offering similar properties to FEP but with a higher working temperature, PFA finds its niche in applications requiring extreme heat resistance. 

Key Properties of PFA 

Highest Working Temperature: Withstands temperatures up to +260°C, comparable to PTFE. 

Welding and Moulding Capabilities: Retains its processability even at elevated temperatures. 

Excellent Chemical Resistance: Ensures longevity in corrosive environments. 

High Purity Grades Available: Ideal for industries with stringent purity requirements. 

While slightly pricier than PTFE and FEP, PFA's ability to excel in high-temperature and high-purity applications makes it a preferred choice in demanding industries. 

Choosing the Right Fluoroplastic 

The choice between PTFE, FEP, and PFA ultimately boils down to your specific application requirements. Whether you prioritise temperature resistance, processability, or chemical inertness, there's a fluoroplastic suited to your needs. 

At Adtech, we specialise in delivering innovative fluoropolymer solutions tailored to your technical applications. Explore our Fluoroplastic Products to discover the perfect fit for your project.