May 12 2001
Polymer Type
Thermoplastic
Advantages
Easier to process than Nylon 6/6 (castable), may be reaction injection moulded. Has lower mould shrinkage than Nylon 6/6 with good fatigue resistance. Useful improvement in stiffness can be obtained by inclusion of glass fibres, unlike acetals.
Disadvantages
Highest rate of water absorption and highest equilibrium water content. Lower strength & stiffness than Nylon 6/6. Higher stick slip than Acetal or PBT.
Applications
Gears, cams, rollers, bearings, nuts and bolts, power tool housings, electrical connectors, combs, coil formers, fuel tanks for cars, kitchen utensils.
NOTE: Generally similar applications to Nylon 6/6. Choice between the two polymers is often made on non-technical grounds, e.g. local availability, price or familiarity.
Typical Properties
| Property |
Value |
| Density (g/cm3) |
1.14 |
| Surface Hardness |
SD75 |
| Tensile Strength (MPa) |
40 |
| Flexural Modulus (GPa) |
1 |
| Notched Izod (kJ/m) |
0.25 |
| Linear Expansion (/°C x 10-5) |
10 |
| Elongation at Break (%) |
60 |
| Strain at Yield (%) |
4.5 |
| Max. Operating Temp. (°C) |
80 |
| Water Absorption (%) |
1.5 |
| Oxygen Index (%) |
22 |
| Flammability UL94 |
HB |
| Volume Resistivity (log ohm.cm) |
14 |
| Dielectric Strength (MV/m) |
25 |
| Dissipation Factor 1 kHz |
0.2 |
| Dielectric Constant 1 kHz |
8 |
| HDT @ 0.45 MPa (°C) |
200 |
| HDT @ 1.80 MPa (°C) |
80 |
| Material. Drying hrs @ (°C) |
3 @ 95 |
| Melting Temp. Range (°C) |
230 - 280 |
| Mould Shrinkage (%) |
1.2 |
| Mould Temp. Range (°C) |
40 - 60 |
Source : Abstracted from Plascams
For more information on Plascams please visit RAPRA Technology Ltd.