MG Chemicals 8820 - High Temperature Rigid Urethane
- Chemical Family
- Polyurethanes (PU)
High Temperature Rigid Urethane 8820 is a black, tough, high temperature, two-part polyurethane potting compound. It has a low mixed viscosity and properties similar to epoxy compounds, but with exceptional low temperature stability. As well, it adheres strongly to a wide variety of substrates, including metals, composites, glass, ceramics, and many plastics. 8820 offers exceptional physical protection, a high continuous operating temperature, and superior protection from acids, bases, and many organic solvents.
Product families
Applications
- Consumer Goods — Appliances & Electronics
- Adhesives & Sealants
- Potting Compounds
Product Families
- Encapsulants
Other characteristics
- Product Type
2K (2 component) Sealant, Encapsulant, Potting Compound; 2K (2 component) Sealant; Encapsulant; Potting Compound
- Compatible Substrates & Surfaces
- Ceramic, Composites, Glass, Metal, Plastics
- Mixing
Mixing >500 g at a time decreases working life and can lead to a flash cure. Limit the size of hand-mixed batches. For large production volumes, contact MG Chemicals Technical Support for assistance.
- Markets
- Consumer Goods
- Electrical & Electronics
- Shelf LIfe
- 1.5 Years
- Technology
- Ready-to-Use Products
- Packaging Type
- Bottles
- Cans
- Pails
- Water Absorption
Approximate sample size: 12.8 mm width, 12.5 mm thickness, and 4.8 g. Cured 1 hour @ 65 ˚C.
- Cure
Allow to cure at room temperature for 24 hours, or cure in an oven at one of these time/temperature options:. Moisture contamination with polyurethanes can create large bubbles on the surface and a lumpy appearance. For consistent curing results, ensure that the resin (part A) is dry before use and the mixture is kept dry during cure. If moisture contamination of part A is suspected, follow the steps below:
- Benefits and Features
- 2:1 mix ratio
- 15 minute working life
- 48 hour cure at room temperature
- Constant service temperature of -50 to 150 °C
- Low exotherm
- Excellent dielectric properties
- Chemical Inventories
- AICS (Australia)
- DSL (Canada)
- ENCS (Japan)
- IECSC (China)
- KECI (Korea)
- NCI (Vietnam)
- NZIoC (New Zealand)
- PICCS (Phillipines)
- Certifications and Compliance
- RoHS Compliant
- Ready to Use Product Features
- Chemical Resistant
- Excellent Dielectric Properties
- Excellent Substrate Adhesion
- Good Toughness
- Low Temperature Performance
- Compatible Substrates and Surfaces
- Ceramic
- Composites
- Glass
- Metal
- Plastics
Technical data
Table 1 of 3
3 rows| Characteristic | Value | Unit |
|---|---|---|
| Mix Ratio | 2:1 | Volume |
| Mix Ratio | 1.85:1 | Weight |
| Working Time | 15 | minute |
Table 2 of 3
14 rows| Characteristic | Value | Unit |
|---|---|---|
| Breakdown Voltage | 47300 | V |
| Compressive Strength | 295 | N/mm2 |
| CTE (After Tg) | 195 | ppm/˚C |
| CTE (Prior Tg) | 94 | ppm/˚C |
| Dielectric Strength | 380 | V/mil |
| Glass Transition Temperature (Tg) | 44 | °C |
| Hardness D | 73 | — |
| Intermittent Temperature | 175 | ˚C |
| Lap Shear (Aluminum) | 12 | N/mm2 |
| Lap Shear (Stainless Steel) | 13 | N/mm2 |
| Resistivity | 1.4 x 10¹³ | Ω·cm |
| Service Temperature Range | -50 to 150 | ˚C |
Table 3 of 3
3 rows| Characteristic | Value | Unit |
|---|---|---|
| Mixed Density | 1.1 | g/mL |
| Viscosity (at 25 ˚C) ⁽ᵃ⁾ | 10700 | cP |
| Viscosity (at 25 ˚C) ⁽ᵇ⁾ | 250 | cP |
