WhatisFilledPTFEandWhatareitsAdvantages?
Introduction:
PTFE stands for Polytetrafluorethylene. The other name for this non-stick material is Teflon.Itcanresisthugetemperaturechanges as it is made of low friction material. PTFE has highdensityandishighlyflexible.Itisnon-toxic as it is chemically unreactive and indissoluble. All these properties make PTFE apt for a wide range of applications but as it is highly flexible heavy loads can damage it. This issue can be resolvedbyaddingfillerstothePTFE.
or glass. This filler also improves the wear resistance and compressive strength of PTFE. It is used in dynamic seals. It also lowers the coefficient of friction.
• PTFE with Carbon Fillers: The electrical conductivity of carbon makes it static dissipative. This conductivity of carbon also makes it applicable for appliances needing higher thermal conductivity. It is less corrosive than glass. It can be used either in the form of powder or fiber. The benefits of carbon-filled PTFE are reduced deformation under heavy load,bettercompressivestrength,low permeability, and improved wear resistance.
The fillers can increase the thermal conductivityofPTFE.Thereare different types of fillers outof which glassis used mostof the time. Other fillers can be polyamide, graphite, carbon, bronze, stainless steel, molybdenum disulphide, etc. These fillers are chosen accordingtotheapplication.
Types of Fillers and their Advantages:
• PTFEwithGlassFillers: Glass is the most widely used filler in PTFE. Glass fillers enhance the strength and durability of PTFE. The more the glass filler amount the better the compressive strength of PTFE. If glassfilled PTFE is inert gas sintered the porosityandthetendencytocreepwill reduce more. Due to its high wear resistance,itisusedinhydraulicpiston rings.
• PTFE with Molybdenum Disulfide Fillers: Molybdenum Disulfide or MoS2 becomes more solid as well as smooth when combined with bronze
• PTFE with Bronze Fillers: Bronze, as a filler material, reduces the chemical inertness and non-stick properties of the PTFE. Bronze fillers improve the wear resistance of PTFE. Thesefillersareusefulforapplications requiring good electrical and thermal conductivity. Bearing and piston ring applications use materials having 55% bronze.
• PTFE with Stainless Steel Fillers: Stainless steel fillers should be implemented in applications employing steam and hot liquids at high temperatures. PTFE with powdered stainless-steel fillers can bearheavyloads.Thisfillerisusefulfor food,drink,andmechanicalindustries.
• PTFE with Graphite Fillers: Graphite has self-lubricating properties which reduce friction. It is generally used in combination with glass or carbon or both. It has good wearresistanceduetoitsflakyform.
• PTFEwithPolymideFillers: Ithasa lower frictioncoefficient. Itis goodfor stainless steel, plastic, brass, and aluminium surfaces as it corrodes slowly. Polymide is a synthetic polymer.Stop-startanddryrunningor
non-lubricated applications can use PTFEwithpolyamidefillers.
There are many other kinds of fillers like calcium fluoride (CaF2), alumina (Al2O3), wollastonite, Ekonol, Ryton, etc. PTFE on machine parts makes it more durable which is why it has many applications. Some of them are aerospace machines, food and drink industries, telecommunications, pharmaceuticals, laboratories, cookware, protectiveclothing,etc.
Conclusion:
Are you in need of PTFE with fillers? We are here to help you. SealMaxprovidesPTFE with different kinds of fillers. To know more about ourproductsandtheirapplicationspleasevisit ourwebsitehttps://www.sealmax.in/.Youcan callusat+918983059377or+918983059366. Youcanalsomailusatadmin@sealmax.net or sales@sealmax.net.
Key Takeaways:
• PTFE is also called Teflon. When used with fillers the thermal conductivity, resistancetofriction,andstrengthof thePTFEincreases.
• Glass fillers are the most widely used fillers in PTFE. Due to high wear resistance,itisusedinhydraulicpiston rings.
• Due to low friction molybdenum disulfide fillers are used in dynamic seals.
• Carbon-filled PTFE comes with the advantages of reduced deformation under heavy load, better compressive strength, low permeability, and improvedwearresistance.
• Bronze-filled PTFE has good wear resistance. It is used in bearing and pistonringapplications.
• Stainless steel-filled PTFE can be used in applications demanding hightemperature and heavy load resistance.
• Graphite fillers self-lubricate which is why they corrode slowly and have goodfrictionresistance.
• Polyamide fillers have the lowest friction coefficient. They are used in stop-start and dry running or nonlubricatedapplications. Contact
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