PF31 phenolic resin
Phenolic resin "Bakelite"
PF31 phenolic resin
Short designation | PF31 |
Description | Phenolic resin |
Mechanical properties |
|
Test specimen condition | Standard |
Tensile strength [MPa] | 50 |
Elastic modulus (tensile) [MPa] | 7500 |
Ball indentation hardness [MPa] | 325 |
Physical properties |
|
Density [g/cm³] | 1.42 |
Melting point [°C] | - |
Application temperatures |
|
Max. temp., short-term [°C] | 160 |
Max. temp., continuous [°C] | 140 |
Min. application temp. [°C] |
|
Other properties |
|
Flammability according to UL 94 | V-0 |
Water absorption | 1.15 |
Chemical resistance |
|
Mineral grease and oils | + |
Petrol | + |
Weak/strong acids | +/- |
Weak/strong alkalis | +/- |
Perchloroethylene | o |
Trichloroethylene | o |
Acetone | + |
Alcohols | + |
Hydrolysis resistance | o |
Weather/UV radiation | - |
+ resistant / o conditionally resistant / - not resistant
PF31 is made from a phenol/formaldehyde resin which is often mixed with organic fillers (fine sawdust, textile fibres).
Key properties:
- High heat deflection temperature
- Very good thermal insulation
- Very good electrical insulation
Typical applications:
- Thermally insulating grip elements for machine parts and domestic appliances
- Light switch and socket housing