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chlorotrifluoroethylene, flammable, colourless gas that belongs to the family of organic halogen compounds, used in the manufacture of a series of synthetic oils, greases, waxes, elastomers, and plastics that are unusually resistant to attack by chemicals and heat. These products are polymers; that is, they are composed of very large molecules built up by combination of hundreds or thousands of smaller molecules, which may be all alike or of two or more different compounds.

Polymers were first prepared from chlorotrifluoroethylene in Germany in and were developed to a useful stage in the United States in the s, when materials resistant to chemical corrosion were needed in the atomic-bomb project. Chlorotrifluoroethylene is produced from tetrachloroethylene by first converting it into trichlorotrifluoroethane, which is then caused to react with either zinc or hydrogen. Chlorotrifluoroethylene, which liquefies upon cooling to -28° C (-18° F), has low toxicity but must be protected from oxygen, which reacts rapidly with it. The polymers it forms, alone or with numerous other compounds, have been commercialized under the trade name Kel-F.

CTFE or PCTFE Sheets, Rods, Tubes & Film

Chlorotrifluoroethylene (CTFE) and polychlorotrifluoroethylene (PCTFE) are very similar materials and frequently referred to by brand names such as Kel-F, Neoflon, Aclar, and Chemfluour 767. CTFE and PCTFE are simply the generic names that reflect the chemical make-up of these materials.

PCTFE and CTFE differ from other common fluoropolymers as they replace a fluorine atom with a chlorine atom. This small change offers multiple advantages over similar materials in specific applications.

What are the Benefits of CTFE and PCTFE?   

CTFE/PCTFE may be confused with other fluoropolymers such as PTFE&#;better known as Teflon&#;but the differences in the materials are quite notable. While there may be some overlap, it should be noted that CTFE/PCTFE and Teflon are each ideal for different purposes.

Choosing CTFE or PCTFE during manufacturing may be a beneficial choice for many designs. Both offer excellent stress-crack resistance and high mechanical strength. CTFE and PCTFE are frequently utilized in cryogenic valve seats, high-pressure gas seats and deals, and various electrical components. A low rate of moisture absorption ensures that CTFE/PCTFE products will maintain beneficial electrical properties even in the face of high humidity&#;a property that is largely unique among competitive materials. 

CTFE and PCTFE offer a wide range of benefits, such as:

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• Chemical resistance
• Long-term weathering
• Non-stick properties
• Non-flammable properties
• Low dielectric constant
• Low dissipation factor
• High arc resistance
• Surface and volume resistivity
• Flexibility at low temperatures
• Thermal stability at high temperatures
• Low deformation under load stresses
• Low coefficient of friction
• Resistant to radiation

Applications of CTFE/PCTFE

CTFE and PCTFE see use in a wide variety of industries. The material is non-flammable, chemical resistant, possesses near-zero moisture absorption, and boasts superior electrical capabilities over other thermoplastic fluoropolymers such as PTFE (Teflon). Common applications of CTFE/PCTFE include:

• Structures. With high levels of dimensional stability across low and high temperatures, CTFE/PCTFE materials make quality structural components. The materials remain stable in temperatures as low as -400° F and as high as 380° F, making them suitable for a wide range of structural purposes and use in harsh environments.

• Medical/Research/Pharmaceutical. With low outgassing rates and permeability, CTFE and PCTFE often see use in specialized applications, such as laboratory instrumentation and tools. The pharmaceutical industry relies on the material to provide moisture barriers in packaging. 

• Electronics. PCTFE and CTFE see common use as moisture barriers for sensitive electronic components, such as LCD panels in televisions and computer monitors.

• Semiconductors. Some semiconductor process components are often made from CTFE or PCTFE, such as wafer boats. The high strength and beneficial electrical properties of the materials make them ideal for these applications.

• High-vacuum. High-vacuum applications benefit from CTFE and PCTFE due to their exceptional stability, crack resistance, and corrosion resistance. 

CTFE and PCTFE are frequently utilized in the fabrication of:

• Valve seats, seals, and stems
• Gears, cams, and bearings
• Gaskets
• Fluid handling systems
• Chemical apparatus

Emco Plastics offers brand name CTFE and PCTFE products designed to exceed your expectations. For more information about these CTFE and PCTFE or our other products and services, please contact us or request a quote.

Emco Industrial Plastics doesn&#;t claim to represent all of the manufacturers or trade name products listed. This list is intended as a guide of typical materials available for purchase from Emco Industrial Plastics, Inc. For additional information, contact an Emco Industrial Plastics representative by filling out the form below.

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