Written by AZoMAug 14 2001
| |
| |
Advantages |
| Long glass fibre gives the highest tensile strength, oxygen index, and flexural modulus, notched izod impact strength and heat distortion temperature for alkyd grades within Plascams. Good elongation at break and mould shrinkage compared with other modified grades of alkyd. |
Disadvantages |
| Highest linear expansion and cost compared with other modified grades of alkyd. |
Typical Properties |
| | | Density (g/cm3) | 2.07 | | Surface Hardness | RM125 | | Tensile Strength (MPa) | 80 | | Flexural Modulus (GPa) | 9 | | Notched Izod (kJ/m) | 0.32 | | Linear Expansion (/°C x 10-5) | 5.5 | | Elongation at Break (%) | 0.9 | | Strain at Yield (%) | N/A | | Max. Operating Temp. (°C) | 130 | | Water Absorption (%) | 0.18 | | Oxygen Index (%) | 50 | | Flammability UL94 | V0 | | Volume Resistivity (log ohm.cm) | 16 | | Dielectric Strength (MV/m) | 13 | | Dissipation Factor1kHz | 0.011 | | Dielectric Constant 1kHz | 4.7 | | HDT @ 0.45 MPa (°C) | 260+ | | HDT @ 1.80 MPa (°C) | 260 | | Material Drying hrs @ °C | 6 @ 30 | | Melting Temp. Range (°C) | 40 - 70 | | Mould Shrinkage (%) | 0.3 | | Mould Temp. Range (°C) | 135 - 160 | |
Applications |
| Electrical switching components and insulators, complicated parts with insulators. |
| Source : Abstracted from Plascams For more information on Plascams please visit The Rubber and Plastics Research Association |