PTFE (Polytetrafluoroethylene) is a high-performance polymer known for its unique combination of thermal, electrical, and mechanical properties. Key physical properties include a melting temperature range of 317-337°C, tensile modulus of 550 MPa, elongation at break of 300-550%, and dielectric strength of 19.7 kV/mm. It also exhibits an extremely low coefficient of friction (0.04), high chemical resistance, and excellent dielectric properties with a dielectric constant of 2.0. These properties make PTFE ideal for applications requiring thermal stability, electrical insulation, and chemical resistance, such as in custom ptfe parts for industrial and medical use.
Key Points Explained:
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Thermal Properties
- Melting Temperature: 317-337°C, making PTFE suitable for high-temperature applications.
- Application Temperature: Up to 260°C, ensuring stability in demanding environments.
- Flammability Rating: V0, indicating high resistance to ignition and flame spread.
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Mechanical Properties
- Tensile Modulus: 550 MPa, reflecting its stiffness under tension.
- Elongation at Break: 300-550%, demonstrating exceptional flexibility and durability.
- Tensile Strength: 3625-4496 psi (for PTFE O-rings), suitable for mechanical seals and gaskets.
- Hardness (Durometer): 60-65 Shore D, balancing flexibility and wear resistance.
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Electrical Properties
- Dielectric Strength: 19.7 kV/mm, ideal for insulating high-voltage applications.
- Dielectric Constant: 2.0, ensuring minimal energy loss in electrical components.
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Friction and Surface Properties
- Dynamic Coefficient of Friction: 0.04, one of the lowest among solids, reducing wear in moving parts.
- Surface Energy: 18 Dynes/cm, contributing to its non-stick characteristics.
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Chemical and Environmental Resistance
- Water Absorption: 0.01% over 24 hours, making it highly resistant to moisture.
- Chemical Resistance: Excellent against most acids, bases, and solvents.
- UV Resistance: Excellent, suitable for outdoor applications.
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Optical and Density Properties
- Refractive Index: 1.35-1.38, useful in optical applications where clarity is needed.
- Density: 2.2 g/cm³, providing a lightweight yet durable material option.
These properties collectively make PTFE a versatile material for specialized applications, including seals, electrical insulation, and non-stick coatings, particularly in custom ptfe parts tailored to specific industrial needs.
Summary Table:
| Property Category | Key Values |
|---|---|
| Thermal Properties | Melting Temp: 317-337°C, Application Temp: Up to 260°C, Flammability: V0 |
| Mechanical Properties | Tensile Modulus: 550 MPa, Elongation: 300-550%, Hardness: 60-65 Shore D |
| Electrical Properties | Dielectric Strength: 19.7 kV/mm, Dielectric Constant: 2.0 |
| Friction/Surface | Coefficient of Friction: 0.04, Surface Energy: 18 Dynes/cm |
| Chemical Resistance | Water Absorption: 0.01%, UV/chemical resistance: Excellent |
| Density/Optical | Density: 2.2 g/cm³, Refractive Index: 1.35-1.38 |
Need PTFE components tailored to your exact requirements?
KINTEK specializes in precision-engineered PTFE solutions for industries like semiconductor, medical, and laboratory applications. From custom seals and liners to high-volume labware, our PTFE products deliver unmatched thermal stability, electrical insulation, and chemical resistance. Contact us today to discuss your project or request a quote!