Features: Filled PTFE products are made of filled PTFE resin and molded. Suspension polymerized polytetrafluoroethylene resin is mixed with various fillers to form filled polytetrafluoroethylene resin. Various fillers suitable for mixing with PTFE include glass fiber, carbon fiber, tin bronze and lubricants (such as graphite, molybdenum disulfide) and have been widely used in large-scale production. Compared with pure polytetrafluoroethylene, filled polytetrafluoroethylene has the advantages of higher compressive strength, good wear resistance, good thermal conductivity, and reduced thermal expansion.
Main Specifications:
| Product ID | Filler ratio (weight ratio) | Tensile strength Mpa≥ | Elongation at break% ≥ | Compressive strength Mpa≥ |
| 1 | 20% glass fiber | 10 | 120 | 16 |
| 2 | 25% glass fiber | 10 | 100 | 16 |
| 3 | 20% glass fiber 5% graphite | 10 | 120 | 16 |
| 4 | 60% tin bronze | 10 | 80 | 20 |
| 5 | 15% carbon fiber | 11 | 130 | 16 |
| 6 | 24% tin green 12% glass fiber 6% graphite | 9 | 100 | 16 |
| 7 | 15% glass fiber 10% polyimide 5% graphite | 10 | 120 | 16.7 |
Use of filled polytetraethylene
| use | Necessary performance | Recommended filled PTFE grade |
| Gasket | Creep and chemical resistance | # 1 # 2 # 3 # 5 |
| Valve seat | Creep resistance, low friction coefficient, chemical resistance | # 1 # 2 # 3 # 5 |
| seal | Creep resistance, low coefficient of friction, chemical resistance, low abrasion, good rigidity and toughness | # 1 # 3 # 5 # 7 |
| Bearing | Low abrasion, low friction coefficient, creep resistance | # 1 # 4 # 5 # 6 |
| Slider | Creep resistance, low friction coefficient, good weather resistance | # 3 |
| Piston ring | Creep resistance, low friction coefficient, chemical resistance, good rigidity and toughness | # 1 # 2 # 3 # 5 |
