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- Cosmic Plastics E4940 Mineral & Glass Filled Epoxy Molding Compound, Encapsulated Grade
Cosmic Plastics E4940 Mineral & Glass Filled Epoxy Molding Compound, Encapsulated Grade
| Category | Polymer , Thermoset , Epoxy , Epoxy, Encapsulating, Glass or Mineral Filled , Filled/Reinforced Thermoset |
| Manufacturer | Cosmic Plastics |
| Trade Name | |
| Port | Shanghai port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | Cosmic Plastics E4940 Mineral & Glass Filled Epoxy Molding Compound, Encapsulated Grade.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
Data provided by the manufacturer.
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 1.85 g/cc | 0.0668 lb/in³ | |
| Apparent Bulk Density | 0.740 g/cc | 0.0267 lb/in³ | |
| Water Absorption | 0.25 % | 0.25 % | 48 hrs, 50°C |
| Linear Mold Shrinkage | 0.0010 - 0.0040 cm/cm | 0.0010 - 0.0040 in/in | typical. |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Barcol | 65 | 65 | |
| Tensile Strength, Ultimate | 83.0 MPa | 12000 psi | |
| Flexural Strength | 103 MPa | 14900 psi | |
| Flexural Modulus | 14.0 GPa | 2030 ksi | |
| Compressive Strength | 193 MPa | 28000 psi | |
| Izod Impact, Notched | 0.270 J/cm | 0.506 ft-lb/in |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 25.0 µm/m-°C @Temperature 20.0 °C |
13.9 µin/in-°F @Temperature 68.0 °F |
Alpha 1 |
| CTE, linear, Transverse to Flow | 70.0 µm/m-°C @Temperature 20.0 °C |
38.9 µin/in-°F @Temperature 68.0 °F |
Alpha 2 |
| Thermal Conductivity | 0.66992 W/m-K | 4.6492 BTU-in/hr-ft²-°F | |
| Deflection Temperature at 1.8 MPa (264 psi) | >= 200 °C | >= 392 °F | |
| Glass Transition Temp, Tg | 160 °C | 320 °F |
| Electrical Properties | Metric | English | Comments |
|---|---|---|---|
| Electrical Resistivity | 1.00e+15 ohm-cm | 1.00e+15 ohm-cm | |
| Surface Resistance | 1.00e+15 ohm | 1.00e+15 ohm | |
| Dielectric Constant | 3.9 @Frequency 1000 Hz |
3.9 @Frequency 1000 Hz |
Wet |
| 4.3 @Frequency 1e+6 Hz |
4.3 @Frequency 1e+6 Hz |
Wet | |
| Dielectric Strength | 14.0 kV/mm | 356 kV/in | Wet, Step by Step |
| Dissipation Factor | 0.011 @Frequency 1e+6 Hz |
0.011 @Frequency 1e+6 Hz |
Wet |
| 0.012 @Frequency 1000 Hz |
0.012 @Frequency 1000 Hz |
Wet | |
| Arc Resistance | 180 sec | 180 sec |
| Processing Properties | Metric | English | Comments |
|---|---|---|---|
| Processing Temperature | 150 - 175 °C | 302 - 347 °F | Molding temperature |
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