A PTFE sheet, also known as a Teflon sheet, is a versatile material made from polytetrafluoroethylene, a synthetic fluoropolymer. It offers exceptional chemical resistance, low friction, and high-temperature stability, making it ideal for various industrial and commercial applications. These sheets are used in gaskets, linings, bearings, and insulation due to their non-stick properties and durability.
Our PTFE sheets come in a range of specifications to meet diverse needs. Below are the detailed parameters presented in lists and tables for clarity.
| Thickness (mm) | Width (mm) | Length (mm) | Color |
|---|---|---|---|
| 0.5 | 1000 | 2000 | White |
| 1.0 | 1000 | 2000 | White |
| 2.0 | 1000 | 2000 | White |
| 3.0 | 1000 | 2000 | White |
| 5.0 | 1000 | 2000 | White |
| Property | Value | Test Method |
|---|---|---|
| Tensile Strength | 20-30 MPa | ASTM D638 |
| Elongation at Break | 300-500% | ASTM D638 |
| Water Absorption | <0.01% | ASTM D570 |
| Flammability | Self-extinguishing | UL94 V-0 |
PTFE sheets are widely used in industries such as chemical processing, food and beverage, pharmaceuticals, and electronics. Common applications include:
What is the maximum temperature a PTFE sheet can withstand?
PTFE sheets can continuously operate at temperatures up to 260°C (500°F) and briefly withstand peaks up to 300°C (572°F) without degrading.
Are PTFE sheets resistant to all chemicals?
Yes, PTFE sheets are highly resistant to nearly all chemicals, including strong acids, bases, oxidizers, and organic solvents, making them suitable for harsh environments.
Can PTFE sheets be cut or machined easily?
Absolutely. PTFE sheets are soft and pliable, allowing for easy cutting, drilling, or machining with standard tools to customize shapes for specific applications.
Is PTFE safe for food contact applications?
Yes, PTFE is FDA-approved for food contact and is non-toxic, making it ideal for use in food processing equipment, baking sheets, and other culinary applications.
How does PTFE compare to other plastic sheets in terms of friction?
PTFE has one of the lowest coefficients of friction among solids, typically around 0.05-0.10, which is lower than materials like nylon or polyethylene, reducing wear and energy consumption.
What are the limitations of using PTFE sheets?
While excellent in many areas, PTFE has lower mechanical strength compared to metals and some plastics, and it can creep under sustained load. It is also not recommended for use with molten alkali metals or fluorine under high temperatures.
How should PTFE sheets be stored and handled?
Store PTFE sheets in a cool, dry place away from direct sunlight and extreme temperatures. Handle with clean gloves to avoid contamination, as oils and dirt can affect performance.
Can PTFE sheets be bonded or adhered to other materials?
Bonding PTFE is challenging due to its non-stick properties. Specialized surface treatments, such as sodium etching or plasma treatment, are often required for effective adhesion with adhesives.
Are there different grades of PTFE sheets available?
Yes, grades include virgin PTFE for high purity, filled PTFE (with additives like glass or carbon for improved properties), and modified PTFE for specific performance enhancements like reduced creep.
What is the typical lead time for custom-sized PTFE sheets?
Lead times vary based on size and quantity, but standard custom orders usually ship within 1-2 weeks, while large or complex orders may take longer.
