Written by AZoMAug 16 2001
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Advantages |
| Significantly improved flexural modulus, better tensile strength, notched impact strength, mould shrinkage, surface hardness and linear expansion compared with unmodified silicone. |
Disadvantages |
| Lower elongation at break, HDT; reduced electrical characteristics and flow compared with unmodified silicone. |
Typical Properties |
| | | Density (g/cm3) | 1.85 | | Surface Hardness | RM90 | | Tensile Strength (MPa) | 35 | | Flexural Modulus (GPa) | 14 | | Notched Izod (kJ/m) | 0.05 | | Linear Expansion (/°C x 10-5) | 4 | | Elongation at Break (%) | 1.5 | | Strain at Yield (%) | N/A | | Max. Operating Temp. (°C) | 240 | | Water Absorption (%) | 0.1 | | Oxygen Index (%) | 40 | | Flammability UL94 | V0 | | Volume Resistivity (log ohm.cm) | 14 | | Dielectric Strength (MV/m) | 15 | | Dissipation Factor1kHz | 0.002 | | Dielectric Constant 1kHz | 3.9 | | HDT @ 0.45 MPa (°C) | 260+ | | HDT @ 1.80 MPa (°C) | 260 | | Material Drying hrs @ °C | NA | | Melting Temp. Range (°C) | 60 - 80 | | Mould Shrinkage (%) | 0.3 | | Mould Temp. Range (°C) | 180 - 210 | |
Applications |
| Encapsulation of electronic components. High performance PCBs. |
| Source : Abstracted from Plascams For more information on Plascams please visit The Rubber and Plastics Research Association |