| About |
|---|
| CONATHANE EN-21 is a two-component, liquid, low viscosity, low toxicity, room temperature curing polyurethane resin system. This system was formulated specifically for the potting, casting, embedding, and encapsulation of electronic circuits, components, and power devices. It is UL 94 HB certified. CONATHANE EN-21 is an easy-to-use, non-TDI, non MbOCA system. It can be hand mixed or machine dispensed and cured at room or elevated temperatures. CONATHANE EN-21 cures to yield an 80 Shore A elastomer and has the following outstanding characteristics: Excellent Electrical Properties Low Toxicity Low Viscosity Low Exotherm and Low Shrinkage Easy Handling Low Stress Build-up on Embedded Components Reversion Resistance Excellent Moisture Resistance CONATHANE EN-21 is ideal for use in potting transformers, coils, reed and mercury switches, inductors, solid state ignition systems, voltage regulators, ballasts, micro-circuits, rectifiers and printed circuit assemblies.&& |
| Product Description | |
|---|---|
| Supplier | Cytec Industries |
| Generic | PUR |
| Material Status | Commercial: Active |
| Features | Good Electrical Properties,Hydrolysis stability,Low Viscosity,Low toxicity,Moisture resistance,Good thermal shock resistance,HB |
| Availabilitys | North America |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | |||
| — | 0.958 | g/cm³ | |
| — | 1.07 | g/cm³ | |
| — | 1.14 | g/cm³ | |
| Water absorption rate | |||
| 25℃，24hr | 0.070 | % | |
| viscosity | |||
| Curing agent, 25 ℃ | 0.8 | Pa·s | |
| Resin, 25 ℃ | 6 | Pa·s | |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Shore hardness | |||
| Shaw’s A | 80 |
| elastic body | Nominal value | Unit | Test method |
|---|---|---|---|
| tensile strength | |||
| yield | 13.8 | MPa | |
| Tensile strain | |||
| fracture | 160 | % | |
| tear strength | 20.8 | kN/m | |
| Compression deformation | 10 | % |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Surface resistivity | > 1.0E+15 | ohms | |
| Volume resistivity | 7.2E+14 | ohms·cm | |
| Dielectric strength | |||
| 1.59 mm | 26 | kV/mm | |
| Dielectric constant | |||
| 1 kHz | 3.40 | ||
| Dissipation factor | |||
| 1 kHz | 0.017 | ||
| insulation resistance | > 2.5E+13 | ohms |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| Flame retardant level | HB | UL 94 |
| Thermosetting mixed viscosity | Nominal value | Unit | Test method |
|---|---|---|---|
| 25℃ | 2000 | cP | |
| 60℃ | 320 | cP | |
| stripping time | |||
| 25℃ | 10000 | min | |
| 80℃ | 240 | min | |
| Gelation time | |||
| 25℃ | 1.5 | hr | |
| 60℃ | 0.3 | hr |
| Supplementary information | Nominal value | Unit | Test method |
|---|---|---|---|
| exothermic peak | 69 | ℃ |
| Cured Properties | Nominal value | Unit | Test method |
|---|---|---|---|
| Linear Shrinkage | 1.4 | % |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Linear coefficient of thermal expansion | |||
| MD | 3.8E-4 | 1/℃ | |
| Thermal conductivity coefficient | 0.30 | W/m/K | |
| Thermosetting components | |||
| resin | 按重量计算的混合比: 100 | ||
| Hardening method | 按重量计算的混合比: 120 | ||
| storage stability | |||
| 25 ℃ | 40 | min | |
| 60 ℃ | 8.0 | min |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. Hardener |
| 3. Mixed |
| 4. Resin |
| 5. Method B |
| 6. 250 gms |
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