| About |
|---|
| PU20940 is a high performance, low viscosity polyurethane resin system offering excellent insulation characteristics and water-resistant properties. PU20940 has been developed for the potting of delicate electronic components requiring electrical insulation and environmental protection. The material cures at room temperature offering a long work life to give a soft flexible product. The standard colour is natural but other colours are available on request subject to volume. Features: Non-toxic Low viscosity Excellent electrical protection Long pot life&& |
| Product Description | |
|---|---|
| Generic | PUR |
| Material Status | Commercial: Active |
| Features | Good flexibility,Low Viscosity,Moisture resistance,Soft,Nontoxicity,Room temperature cure,Insulation |
| Availabilitys | Europe |
| Technical Data | |||
|---|---|---|---|
| THERMAL | Nominal value | Unit | Test method |
| Linear coefficient of thermal expansion | |||
| MD | 7.5E-5 to 1.3E-4 | 1/℃ | |
| Thermal conductivity coefficient | 0.30 | W/m/K | |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Surface resistivity | 1.4E+15 to 1.6E+15 | ohms |
| Supplementary information | Nominal value | Unit | Test method |
|---|---|---|---|
| working temperature | -55 to 125 | ℃ |
| Uncured Properties | Nominal value | Unit | Test method |
|---|---|---|---|
| colour | |||
| — | Brown | ||
| — | Natural Color | ||
| Weight Mix Ratio (PBW) | |||
| Resin | 3.2 | ||
| Hardener | 1.0 | ||
| Density | |||
| — | 0.990 | g/cm³ | |
| — | 1.00 | g/cm³ | |
| — | 1.02 | g/cm³ | |
| viscosity | |||
| 25℃ | 0.10 to 0.15 | Pa·s | |
| 25℃ | 0.45 | Pa·s | |
| 25℃ | 0.50 to 0.70 | Pa·s | |
| Curing time | 24 | hr | |
| Gelation time | 1.4E+3 | min | |
| storage stability | 720 | min |
| Cured Properties | Nominal value | Unit | Test method |
|---|---|---|---|
| Water absorption rate | |||
| 23℃ | 0.60 | % | |
| 100℃ | 1.4 | % | |
| Shore hardness | |||
| Shaw’s A | 40 | ||
| tensile strength | 10.0 | MPa | |
| Tensile strain | |||
| fracture | 320 | % | |
| compressive strength | < 10.0 | MPa | |
| Electrical strength | 25 | kV/mm | |
| Volume resistivity | 1.2E+16 to 1.4E+16 | ohms·cm |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. Hardener |
| 3. Resin |
| 4. Mixed |
| 5. 7 days |
| 6. 30 minutes |
| 【 Disclaimer 】 Guangzhou Soliao Information Technology Co., Ltd. reserves all rights. The information in this data table was obtained from the manufacturer of the material on soliao.com. Soliao.com makes every effort to ensure the accuracy of this data. However, the search company does not assume any responsibility for the uncertainty and consequences caused to users by these data values and suggestions, and strongly recommends verifying the data values with the material supplier before the final selection of materials. |