| About |
|---|
| CONATHANE EN-2521 is a two-part filled polyurethane resin system. The system features good handling properties and working life. EN-2521 can be cured at room or elevated temperatures without the formation of voids. The cured compound has excellent water resistance and is exceptionally resistant to thermal shock. Other outstanding properties of this system include low exotherm, very low stresses during cure, low shrinkage, and very good electrical properties. CONATHANE EN-2521 is recommended for potting applications where exceptional performance in the temperature range of -65°C to 130°C is required. It is particularly useful in the encapsulation of modules, strain sensitive circuitry, transformers, and coils.&& |
| Product Description | |
|---|---|
| Supplier | Cytec Industries |
| Generic | PUR |
| Material Status | Commercial: Active |
| Features | Excellent Processability,Good Electrical Properties,Low Exotherm,Low contractility,Good thermal shock resistance,HB |
| Availabilitys | North America |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | |||
| — | 1.10 to 1.30 | g/cm³ | |
| — | 1.53 | g/cm³ | |
| — | 1.40 to 1.70 | g/cm³ | |
| Water absorption rate | |||
| 25 ℃, 24 hours, in water | 0.19 | % | |
| 25℃，60days | 0.94 | % | |
| 7days | 0.55 | % | |
| Solid content | |||
| — | 100 | % | |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Surface resistivity | |||
| — | 4.6E+13 | ohms | |
| — | 3.9E+11 | ohms | |
| — | 5.8E+9 | ohms | |
| Volume resistivity | |||
| 25 ℃ | 1.2E+14 | ohms·cm | |
| 60 ℃ | 9.0E+11 | ohms·cm | |
| 90 ℃ | 1.7E+10 | ohms·cm | |
| Dielectric strength | |||
| 1.59 mm | 26 | kV/mm | |
| 3.18 mm | > 16 | kV/mm | |
| Dielectric constant | |||
| 25 ℃，100 Hz | 4.80 | ||
| 25 ℃，1 kHz | 4.30 | ||
| 25 ℃，1 MHz | 3.70 | ||
| 60 ℃，100 Hz | 7.40 | ||
| 60 ℃，1 kHz | 6.50 | ||
| 60 ℃，1 MHz | 4.00 | ||
| 90 ℃，100 Hz | 6.90 | ||
| 90 ℃，1 kHz | 7.90 | ||
| 90 ℃，1 MHz | 4.40 | ||
| Dissipation factor | |||
| 25℃，100 Hz | 0.072 | ||
| 25℃，1 kHz | 0.045 | ||
| 25℃，1 MHz | 0.016 | ||
| 60℃，100 Hz | 0.14 | ||
| 60℃，1 kHz | 0.16 | ||
| 60℃，1 MHz | 0.043 | ||
| 90℃，100 Hz | 0.19 | ||
| 90℃，1 kHz | 0.24 | ||
| 90℃，1 MHz | 0.082 | ||
| Arc resistance | 130 | sec | |
| Compared to the leakage tracing index | > 600 | V | UL 746 |
| Compared to the leakage tracing index | PLC 0 | UL 746 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| Flame retardant level | HB | UL 94 |
| Thermosetting mixed viscosity | Nominal value | Unit | Test method |
|---|---|---|---|
| 25℃ | 200 | cP | |
| 25℃ | 12000 | cP | |
| 25℃ | 4000 | cP | |
| 60℃ | 2800 | cP | |
| stripping time | |||
| 25℃ | 480 to 600 | min |
| Supplementary information | Nominal value | Unit | Test method |
|---|---|---|---|
| Isocyanate Content | 30 to 32 | % | |
| Cold and hot shock test -10 cycles, -65 ℃ to 130 ℃ | passes | ||
| Work term -1 lb. mass | |||
| 25℃ | 1.3 | hr | |
| 60℃ | 0.3 | hr | |
| Antifungal activity | Non-nutrient |
| Cured Properties | Nominal value | Unit | Test method |
|---|---|---|---|
| Linear Shrinkage | 0.71 | % |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Shore hardness | |||
| Shaw’s D | 65 | ||
| tensile strength | 11.0 | MPa | |
| Tensile strain | |||
| fracture | 40 | % |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Linear coefficient of thermal expansion | |||
| MD | 1.6E-4 | 1/℃ | |
| Thermal conductivity coefficient | 0.27 | W/m/K | |
| thermal stability | |||
| % Wt. Loss after 7 days @ 130℃ | 0.24 | % | |
| % Wt. Loss after 7 days @ 155℃ | 0.59 | % | |
| Thermosetting components | |||
| resin | 按重量计算的混合比: 20 | ||
| Hardening method | 按重量计算的混合比: 100 |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. Resin |
| 3. Mix |
| 4. Hardener |
| 5. 90°C |
| 6. 60°C |
| 7. 25°C |
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