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Enkidu PTFE

Material Information

Generally, PTFE is a tough, flexible, non-resilient material of average tensile strength but with great thermal properties and excellent resistance to chemicals and passage of electric current. The coefficient of friction is unusually low and believed to be lower than any other solids.

Fluorine is an exceptionally reactive element making a strong C-F bond polymerizing to highly crystalline, extremely chemical resistant PTFE moiety.

Free-radical polymerization of tetrafluoroethene (TFE) monomers via suspension technique synthesizes high molecular weight, extremely viscous (1011–1012 poise at 380°C) PTFE white coarse powder. Coarse powder is milled to a fine powder which makes it compoundable to incorporate reinforcements and other additives.

Enkidu virgin PTFE is available in both Free Flow (FF) and Non-Free Flow (NFF).

FF (Free Flowing) can be used for Compression, Semi-Automatic and Isostatic Moulding. FF offers improved handling and better productivity due to not becoming agglomerated during transportation. Free flow also enables thin wall moulds to be filled more easily.

NFF (Non-Free Flowing) is designed for compression moulding and offers advantages when hand filling moulds with thick walls. Non free flow PTFE offers better physical properties than free flow.

The most common fillers and their effect on PTFE

Related Enkilon Grades:

1011, 1012

Effect of Fillers:

Better wear resistance
Decreases deformation underload
Lowers machining tool wear
Lowers couterface attack

Related Enkilon Grades:

1013, 1014, 1023

Effect of Fillers:

Economical than soft carbon
Excellent deformation, compression & wear resistance
Increased machining tool wear

Related Enkilon Grades:

1011, 1012, 1016

Effect of Fillers:

Econmical dry lubricant
Controls & decreases COF & improves the surface finish
Increased thermal conductivity at high higher loading level
Marks counterface & lower wear resistance

Related Enkilon Grades:

1004, 1017

Effect of Fillers:

Decreases & controls impact of other fillers on COF
Increases hardness & product weight
Expensive dry lubricant

Related Enkilon Grades:

1005, 1006, 1017

Effect of Fillers:

Increases wear resistance
Increases thermal & electrical conductivity
Increased gap extrusion resistance
Increases product weight significantly & decreases chemical resistance

Related Enkilon Grades:


Effect of Fillers

Decreases deformation underload
Increases thermal & electrical conductivity
Increases product weight significantly

Related Enkilon Grades:

1009,1010, 1019, 1026, 1035

Effect of Fillers:

Excellent wear resistance without abrading counterface
Lowers product weight
Decreases deformation underload
Expensive fillers, typically used in lower loadings

Related Enkilon Grades:

1017,1021, 1024, 1025,1028,1029

Effect of Fillers:

Increases wear resistance
Increases yield strength significantly
Significantly decreases deformation under load
Could abrade soft counterface

Related Enkilon Grades:

1002, 1003, 1004, 1008, 1015,1020, 1030

Effect of Fillers:

Decreases deformation under load
Increases wear resistance
Increases permeability and extremely abrades couterface

Related Enkilon Grades:

Enkilon 1018

Effect of Fillers:

Less abrasive than glass fibre
Increases wear resistance
Decreases deformation under load

Processing Methods

Cold Compression Moulding and Sintering

RAM Extrusion

Auto Moulding

Isostatic Moulding

Moulding and Skiving

Unique Properties and Characteristics

• Very low coefficient of friction
• Low surface energy and non-stick characteristics
• Cold flow under load
• Poor wear properties
• Cryogenic and high-temperature resistance
• Low dielectric constant
• Electrical and thermal insulation
• High ductility
• High inertness
• Non-Flammable
• Low compression modulus allowing enhanced sealing at low pressure.
• Very high chemical resistance to both chemicals and solvents
• Resistance to atmospheric agents and UV rays
• Food, medical and high-purity grades available
• Easy blend ability leading to a vast range of PTFE compounds.

Limitations of PTFE

    • Non-melt processable material
    • Low tensile yield strength and modulus (when compared against PEEK, LCP, and PPS)
    • High wear behaviour in an unfilled state
    • Not weldable
    • High creep behaviour
    • Low radiation resistance

Area of Application

Food & Beverage


Water & Environmental


Oil & Gas


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