PUT3220-8-2K A/B Two-part Polyurethane Potting Adhesive
PUT3220-8-2K is a versatile option for potting and sealing electronic and electrical items. It boasts a low mixing viscosity, excellent fluidity, and ease of pouring, making it simple to work with. Primarily used for waterproofing, protection, sealing, filling, and insulation purposes. Once cured, it forms a strong adhesive structure with impressive electrical properties. Additionally, it meets the environmental standards set by RoHS and Reach regulations.
- PUT3220-8-2K is a two-component, high-performance aromatic polyurethane potting material
- PUT3220-8-2K consists of the main agent and curing agent
*Glue A: curing agent/cured isocyanate.
*Glue B: main agent/polyol.
Specifications
TYPICAL PROPERTIES
| Index | Mixing ratio (By weight) | Color | Viscosity @25 °C, Mpas | Density @25 °C, g/cm3 | Open time, 100g, 25 °C | Storage time, Sealed 25℃ |
| PUT3220-8-2KA | 30 | brown liquid | 60 ~ 120 | 1.21 ± 0.05 | – – – – – – – – – – | 3 months |
| PUT3220-8-2KB | 100 | colored liquid | 3000 ~ 5000 | 1.49 ± 0.05 | – – – – – – – – – – | 3 months |
| Mix A+B | – – – – – – – – – | black | 800 ~ 1400 | 1.38 ± 0.05 | 30 ± 5 min | – – – – – – – – – – |
TYPICAL CURED PROPERTIES
| Index | Fixed time @25 °C | Curing time @25 °C | Heat curing @60 °C | Cured hardness, Shore A | Color, Visual inspection | Temperature resistant, °C | Tg point, °C | Linear expansion coefficient, N/mm² |
| PUT3220-8-2K | 2~4H | 6~10H | 1H | 60~70A | black | -40°C~130°C | 15°C | 149*10¯⁶ K¯¹ |
CURED ELECTRICAL PERFORMANCE
| Index | Thermal Conductivity, W/m.k | Dielectric strength @23 °C, kV | Volume resistivity @23°C/50% r.h | Surface resistance @23 °C/50% r.h | Dielectric constant at 1MHz, 23 °C |
| PUT3220-8-2K | 0.5 | ≥ 50 | 1.54E*10¹³ῼ.cm | 2.88E*10¹³ῼ/sq | 3.72 |
Technical Documents
PUT3220-8-2K Technical Data Sheet
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