Polytetrafluoroethylene
Polytetrafluoroethylene (PTFE) is a high-performance fluoropolymer with exceptional chemical resistance, thermal stability, and electrical insulation properties. Our premium-grade PTFE products meet the most demanding industrial requirements across various sectors including chemical processing, aerospace, and medical applications.
Key Product Specifications
- Chemical Composition: (C2F4)n - Fully fluorinated carbon chain
- Density: 2.14-2.20 g/cm³
- Melting Point: 327°C (620°F)
- Continuous Service Temperature: -200°C to +260°C (-328°F to +500°F)
- Tensile Strength: 15-35 MPa
- Dielectric Strength: 60 kV/mm
Technical Comparison Table
| Property | Standard PTFE | Modified PTFE | Expanded PTFE |
|---|---|---|---|
| Density (g/cm³) | 2.14-2.20 | 2.12-2.17 | 0.4-1.2 |
| Elongation at Break (%) | 200-400 | 250-500 | 300-600 |
| Friction Coefficient | 0.05-0.10 | 0.08-0.15 | 0.10-0.20 |
| Chemical Resistance | Excellent | Excellent | Excellent |
Polytetrafluoroethylene Advantages
Our Polytetrafluoroethylene products offer:
- Outstanding chemical inertness (resistant to virtually all chemicals)
- Exceptional thermal stability (operating range from -200°C to +260°C)
- Excellent electrical insulation properties
- Low coefficient of friction (self-lubricating properties)
- Non-stick characteristics
- UV and weather resistance
Polytetrafluoroethylene Applications
- Chemical processing equipment (seals, gaskets, linings)
- Electrical insulation components
- Non-stick coatings for cookware
- Medical implants and devices
- Aerospace components
- Automotive fuel systems
Polytetrafluoroethylene FAQ
What is the maximum temperature Polytetrafluoroethylene can withstand?
Polytetrafluoroethylene maintains its mechanical properties up to 260°C (500°F) continuously, with short-term exposure possible up to 300°C (572°F). Below zero, it remains flexible down to -200°C (-328°F), making it suitable for cryogenic applications.
How does Polytetrafluoroethylene compare to other plastics in chemical resistance?
Polytetrafluoroethylene offers superior chemical resistance compared to nearly all other plastics. It is virtually inert to all chemicals except molten alkali metals and certain fluorine compounds. Unlike many plastics, it won't swell or degrade when exposed to strong acids, bases, or solvents.
Can Polytetrafluoroethylene be recycled or reused?
While Polytetrafluoroethylene is technically recyclable, the process is complex due to its chemical stability. Most recycling involves grinding scrap material for use as filler in compounds. Some specialized facilities can depolymerize PTFE, but this isn't widely available. The best approach is to minimize waste during fabrication.
Manufacturing Capabilities
- Custom molded PTFE components
- PTFE sheet and rod stock
- PTFE film and tape
- PTFE-coated fabrics
- Machined PTFE parts
- Compression molded PTFE
Quality Assurance
Our Polytetrafluoroethylene products undergo rigorous testing to ensure compliance with:
- ASTM D4894 (Standard Specification for PTFE Granular Molding and Ram Extrusion Materials)
- ASTM D4745 (Standard Specification for Filled Compounds of Polytetrafluoroethylene)
- FDA 21 CFR 177.1550 for food contact applications
- ISO 10993 for medical-grade applications