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Cosmic Epoxy E4920
| Category: | Epoxy , Epoxy; Epoxide |
| Manufacturer: | Cosmic Plastics, Inc. |
| Trademark: | Cosmic Epoxy |
| Fillers: | - |
| Ports: | Qinzhou, Shekou, Shanghai, Ningbo |
| Delivery Terms | FOB, CIF, DAP, DAT, DDP |
| PDF: | AsQWgm_Cosmic-Epoxy-E4920.pdf  |
| PRICE: | Order Products email sales@su-jiao.com |
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DESCRIPTION Cosmic E4920 is a mineral filled epoxy molding compound which is available either in a granular form, or preformed in a variety of sizes and weights. FEATURES It has excellent moisture resistance, thermal cycling stability and outstanding moldability. Parts molded from this material do not support fungus growth. It is available in a wide flow range to suit custom molding requirements. E4920 can be supplied in black, gold, green or red. It has a shelf life of six months when stored at 5°C. APPLICATIONS It is designed for encapsulation of passive devices such as capacitors, inductors, diodes and rectifiers. |
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| Physical | Nominal Value | Unit | |
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| Specific Gravity | 1.85 | g/cm³ | |
| Bulk Factor | 2.0 to 5.0 | ||
| Molding Shrinkage - Flow | 0.20 to 0.40 | % | |
| Water Absorption 1(Equilibrium, 50°C) | 0.25 | % |
| Hardness | Nominal Value | Unit | |
|---|---|---|---|
| Barcol Hardness | 65 |
| Mechanical | Nominal Value | Unit | |
|---|---|---|---|
| Tensile Strength | 82.7 | MPa | |
| Flexural Modulus | 13800 | MPa | |
| Flexural Strength | 103 | MPa | |
| Compressive Strength | 241 | MPa |
| Impact | Nominal Value | Unit | |
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| Notched Izod Impact | 27 | J/m |
| Thermal | Nominal Value | Unit | |
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| Glass Transition Temperature | 175 | °C | |
| CLTE - Flow | |||
| -- 2 | 2.5E-5 | cm/cm/°C | |
| -- 3 | 7.0E-5 | cm/cm/°C | |
| Thermal Conductivity | 0.67 | W/m/K | |
| Heat Distortion | 260 | °C |
| Electrical | Nominal Value | Unit | Test Method |
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| Dielectric Breakdown - Wet | 56000 | V | |
| Surface Resistivity | 1.0E+15 | ohms | |
| Volume Resistivity | 1.0E+15 | ohms·cm | |
| Dielectric Strength 4(Wet) | 14 | kV/mm | |
| Dielectric Constant 5 | |||
| 1 kHz | 3.90 | ||
| 1 MHz | 4.30 | ||
| Dissipation Factor 6 | |||
| 1 kHz | 0.012 | ||
| 1 MHz | 0.011 | ||
| Arc Resistance | 180 | sec |
| Flammability | Nominal Value | Unit | Test Method |
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| Flame Rating (1.59 mm) | V-0 | UL 94 |
| Injection | Nominal Value | Unit | |
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| Processing (Melt) Temp | 150 to 180 | °C | |
| Injection Pressure | 3.45 to 55.2 | MPa |
| Note Message | |
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| 1 . | 48 hrs |
| 2 . | Alpha 1 |
| 3 . | Alpha 2 |
| 4 . | Method B (Step-by-Step) |
| 5 . | Wet |
| 6 . | Wet |
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|---|---|---|---|
| RapidVac™ VA-1815 | Innovative Polymers, Inc. | TSU | RapidVac™ |
| Moplen EP548U | LyondellBasell Industries | PP Impact Copolymer | Moplen |
| Celanex® 3200 | Celanese Corporation | PBT | Celanex® |
| HI-ZEX™ 8800B | Prime Polymer Co., Ltd. | HDPE | HI-ZEX™ |
| Sylvin 7608-65D Clear 8442 | Sylvin Technologies Incorporated | PVC, Rigid | Sylvin |
