Why should you choose an Expanded PTFE instead of PTFE?
Introduction
PTFE stands for Polytetrafluoroethylene. It is a synthetic fluoropolymer of tetrafluoroethylene. Expanded PTFE is made of 100% pure PTFE which can be used as a sealing agent. It is lightweight but strong. These materials are used for various industrial applications but you should know whether PTFE or ePTFE is better for your application. To get the answer tothis crucial question you must knowthedifferencebetweenandusages ofthesetwomaterials.
The Difference between PTFE and Expanded PTFE:
PTFE:
• PTFEorTeflonisasolidmaterial.
• It can function well in an environment with up to 260 DegreeCelsiustemperature.
• It is a long-lasting material as it canputupwithcorrosion.
• Itdoesnotcausemuchfriction.
• The industries fit for the usage of PTFEareoxidizingmedia,mineral oils, pharmaceutical, food, petrochemicals, glass line reactors and columns, solvents, lacquers, and corrosive chemicals.
• It does not contaminate anything thatcomesincloseproximitytoit asitisnon-corrosivewhichiswhy foodindustriesuseit.
• Ithasnosmellofitsown.
ePTFE:
• 100%virgin PTFE is the material usedtoproduceexpandedPTFE.
• ePTFEasasealingmaterialcanbe highlycompressed.
• It can stand strong against creep andcoldflow.
• It can adapt to sealing surfaces easily.
• It can be modified as per requirements such as surface energies,stiffness,hardness,etc.
• Itismicroporousandsofitforany taskthatneedsairflow.
• Itstretchesatahightemperature andissmoothintexture.
• It is chemically inactive, waterresistant at low pressure, UV resistant and has a low dielectric constant, radial extension, divergentporositylevel.
• It can be used in medical and biological industries, highperformance filters, medical devices, oil and gas industries, electronic insulators, hernia repair, vascular grafts, and other reconstructive surgery, fluidic purification applications, and environmentalfiltration.
But the range of application of ePTFE is wider than PTFE. The multi-directional fibrous structure of ePTFE makes it capable of performing at a high surface pressurecondition. Formaximum safety demands like flange sealing of oxygencarrying tubes, ePTFE is the appropriate material as it can be highly customized. ePTFE has a better performance rate thanPTFE.Ithassomuchdemandinthe market that it is now manufactured with varying heights, densities, and dimensions.
Conclusion:
Why
Both PTFE and ePTFE have superb industrial applications with excellent features.
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Should You Go for an ePTFE over a PTFE?