Written by AZoMAug 16 2001
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Advantages |
| Significantly higher tensile strength, flexural modulus and HDT, lower water absorption and mould shrinkage and higher surface hardness, elongation at break and volume resistance compared with urea formaldehyde foam. |
Disadvantages |
| Lower maximum operating temperature, worse dielectric constant, tracking resistance and dimensional stability compared with urea formaldehyde foam. |
Typical Properties |
| | | Density (g/cm3) | 1.47 | | Surface Hardness | RM115 | | Tensile Strength (MPa) | 57 | | Flexural Modulus (GPa) | 10 | | Notched Izod (kJ/m) | 0.02 | | Linear Expansion (/°C x 10-5) | 3 | | Elongation at Break (%) | 0.8 | | Strain at Yield (%) | N/A | | Max. Operating Temp. (°C) | 75 | | Water Absorption (%) | 0.6 | | Oxygen Index (%) | 30 | | Flammability UL94 | V0 | | Volume Resistivity (log ohm.cm) | 12 | | Dielectric Strength (MV/m) | 12 | | Dissipation Factor1kHz | 0.04 | | Dielectric Constant 1kHz | 7 | | HDT @ 0.45 MPa (°C) | 260+ | | HDT @ 1.80 MPa (°C) | 130 | | Material Drying hrs @ °C | NA | | Melting Temp. Range (°C) | 95 - 105 | | Mould Shrinkage (%) | 0.8 | | Mould Temp. Range (°C) | 135 - 155 | |
Applications |
| Electrical plugs and terminals, buttons, adhesives, binders, toilet seats, bottle caps, knobs and handles. |
| Source : Abstracted from Plascams For more information on Plascams please visit The Rubber and Plastics Research Association |