Le POM présente une excellente résistance aux solvants organiques, huiles, graisses et carburants. Sensible aux acides forts et bases concentrées (hydrolyse). Incompatible avec les oxydants forts. Bonne tenue en milieu humide et dans l'eau chaude.
Acetal POM (Polyoxymethacrylate) Copolymer – carbon fibres
Reinforced carbon fibres
✓ This material meets the criteria ~ Specialized grades may meet this criteria
| Density | 1.43 to 1.50 g/cm³ ISO 1183 |
|---|---|
| Charpy notched impact | 3.0 to 7.0 kJ/m2 |
| Flexural modulus | 5,940 to 16,000 MPa ISO 178 |
| Flexural resistance | 190 MPa |
| Tensile modulus | 8380 to 17300 MPa ISO 527-1 |
| Tensile resistance | 62.9 to 131 MPa ISO 527-1, -2, Break |
| Tensile strain | 0.95 to 4.0 % ISO 527-1, -2, Break |
Le POM présente une excellente résistance aux solvants organiques, huiles, graisses et carburants. Sensible aux acides forts et bases concentrées (hydrolyse). Incompatible avec les oxydants forts. Bonne tenue en milieu humide et dans l'eau chaude.
CF grades require slightly higher temperatures and pressures. Very abrasive → carbide tooling is mandatory. Almost isotropic shrinkage is very low. Electrical conductivity must be taken into account in the design of parts.
POM is a recyclable thermoplastic. Recycling is limited by its sensitivity to thermal degradation. Depolymerisation allows for the recovery of formaldehyde. Recycled grades exist for non-critical applications.
POM-FDA grades are approved for food contact (cold and hot water). Used in taps and kitchen equipment. Check the specific grade with the supplier.