SHEETSPTFE
Filled PTFE Rod - Block
01
Product Description
They are manufactured from filled PTFE resin using the molding process. Suspension polymerized PTFE resin is mixed with a wide variety of filler materials. Most commonly used fillers include glass fiber, carbon fiber, bronze, and as lubricants, graphite and molybdenum disulfide. As seen in the technical specification table, the compressive strength and wear resistance of filled PTFE material are higher than those of pure PTFE.
02
Technical tables
1 tableTable 1
| Virgin / Filled PTFE Material Specification | ||||||
| Mechanical Properties | Criteria | Unit | Test | Virgin PTFE | PTFE + 25% Glass Fiber | PTFE + 25% Carbon Fiber |
| Density | g/cm3 | D792 | 2.16 | 2.25 | 2.08 | |
| Water Absorption, 24 h | % | D570 | <0.01 | <0.02 | <0.05 | |
| Tensile Strength | psi | D638 | 3,900 | 2,100 | 1,900 | |
| Tensile Modulus | psi | D638 | 80,000 | - | - | |
| Elongation at Break | % | 300 | 270 | 75 | ||
| Flexural Strength | psi | D790 | No Break | 1,950 | 2.300 | |
| Flexural Modulus | psi | D790 | 72,000 | 190,000 | 160,000 | |
| Compressive Strength | psi | D695 | 3,500 | 1,000 | 1,700 | |
| Compressive Modulus | psi | D695 | 70,000 | 110,000 | 87,000 | |
| Hardness | Shore D | D785 | 50 | 60 | 62 | |
| Izod Notched Impact | ft-lb/in. | D256 | 3.5 | - | - | |
| Thermal Properties | Coefficient of Linear Thermal Expansion | X 10-5 in./ in./°F | D696 | 7.5 | 6.4 | 6 |
| Heat Deflection Temperature | at 264 psi °F/°C | D648 | 132/55 | 150/65 | 150/65 | |
| Melting Temperature | °F/°C | D3418 | 635/335 | 635/335 | 635/335 | |
| Operating Temperature | °F/°C | - | 500/260 | 500/260 | 500/260 | |
| Thermal Conductivity (BTU-in/ft2-hr-°F x 10-4 cal/cm-sec-°C) | C177 | 1.70 5.86 | 4.5 15.5 | |||
| Flammability Rating | - | UL94 | V-0 | V-0 | V-0 | |
| Electrical Properties | Dielectric Strength (V-mil, short time, 1/8” thick) | D149 | 285 | - | - | |
| Dielectric Constant | 1 MHz | D150 | 2.1 | 2.4 | ||
| Dissipation Factor | 1 MHz | D150 | <0.0002 | <0.05 | ||
| Volume Resistivity | (ohm-cm) @ 50% RH | D257 | >1018 | >1015 | 104 | |
| The information provided here is a compilation of publicly available data. It is offered for comparison purposes only and is not guaranteed to be absolute or definitive. Furthermore, no responsibility is accepted for any errors, inaccuracies, or omissions contained herein. | ||||||
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Notes
1 note- The table provides an overview of the properties of pure and filled PTFE materials. In fact, there are countless combinations of filler materials available, depending on the purpose of use. Among these, glass fiber-filled and carbon fiber-filled alloys are the most widely applied. The reinforcement material should be selected according to the importance of the feature to be highlighted.
