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Do you know the differences between PTFE and FEP?

2024-09-27

Here is a comparison table between PTFE and FEP:

Property	PTFE (Polytetrafluoroethylene)	FEP (Fluorinated Ethylene Propylene)
Chemical Structure	Polymerized from tetrafluoroethylene, with a pure and stable structure	Copolymer of tetrafluoroethylene and hexafluoropropylene, with copolymer characteristics
Processing	Cannot be melt-processed, requires compression molding and sintering	Can be processed using thermoplastic methods like injection molding and extrusion
Maximum Operating Temperature	Up to 260°C	Around 200°C
Mechanical Properties	Prone to deformation under tension and bending, high wear resistance	Better mechanical strength, high flexibility, ideal for films and coatings
Electrical Properties	Extremely high dielectric strength and electrical insulation, suitable for high-frequency and high-voltage applications	Excellent electrical insulation, but dielectric constant is slightly higher than PTFE
Transparency	Opaque, white	Transparent when thin, suitable for applications requiring a clear appearance
Chemical & Corrosion Resistance	Extremely high chemical resistance, resists most chemicals	Similar to PTFE, with excellent chemical and corrosion resistance
Friction Coefficient	Extremely low, known as "the most slippery material"	Slightly higher friction coefficient than PTFE, but still very low
Application Scenarios	Ideal for applications requiring high temperature, extreme chemical resistance, and low friction	Suitable for applications requiring thermoplastic processing, good flexibility, and a transparent appearance

This table provides a concise comparison of the key differences between PTFE and FEP.

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Shenzhen Teflon New Material Technology Co., Ltd

Shenzhen Teflon is a leading manufacturer and supplier of high-performance fluoroplastic raw materials and semi-finished products in China.

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