Ebalta Kunststoff Gmbh GM 979PUR 1
- Chemical Family
- Polyurethanes (PU)
Ebalta GM 979 is an easy-to-handle-2components-polyurethane casting compound which shows very low adhesive properties compared to molding sand. Due to its high abrasion resistance, GM 979 is especially suitable for foundry patterns, which have to resist to abrasive wear by molded sand. GM 979 even keeps its high mechanical strength when using molding sands with higher temperatures.
Product families
Applications
- Tooling & Moldmaking
Product Families
- Polyurethanes
Other characteristics
- Density
- 1600.0 - 1700.0 kg/m³
- End Uses
- Foundry Dressings
- Polymer Name
- Polyurethane (unspecified)
- Processing Methods
- Casting, Injection Molding
- Markets
- Industrial
- Storing
Storage at room temperature 18-25 °C.; Opened containers should be closed immediately after use and should be used up as soon as possible.
- Packages
- 25 kg 6 kg
- Properties
wear resistant good compressive strength impact resistant heat resistant excellent demoulding from mold and core sand properties
- Technology
- Plastics
- Material Features
- Ease of Handling
- Excellent Mold Release
- Good Compressive Strength
- Impact Resistance
- Thermal Shock Resistant
- Wear Resistant
- Processing Instruction
Material- and processing temperature: between 18 - 25 °C.; Close containers after use. Seal porous mold surfaces first (ebalta mold sealer).; For optimum mold releasing we recommend a special release agent (like T1-1), which can be applied easily with a brush or be sprayed.; Releasing of the mold 2-3 times, evaporate for about 20 min. after each releasing.; Mixing ratio resin/hardener according to instructions.; Stirring rods etc. with residual resin can be easily cleaned with ebaclean.
- Plastics and Elastomers End Uses
- Foundry Dressings
- Plastics and Elastomers Functions
- Resin
- Plastics and Elastomers Processing Methods
- Casting
- Injection Molding
Technical data
Table 1 of 1
18 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Shore hardness | 90 ± 3 | Shore D | DIN ISO 7619-1 |
| Compressive Strength | 85 ± 5 | MPa | EN ISO 604 |
| Viscosity (25°C) | 4500 ± 800 | mPa.s | — |
| Flexural elongation at break | 1.20 ± 0.1 | % | EN ISO 178 |
| Density (20°C) | 1,65 ± 0,05 | g/cm3 | — |
| Flexural modulus | 6700 ± 500 | MPa | EN ISO 178 |
| Pot Life (200g/20°C) | 25 - 35 | minutes | — |
| Flexural strength | 68 ± 5 | MPa | EN ISO 178 |
| Curing time at RT | 8-12 | Hrs | — |
| Heat resistance (HDT) | 80 ± 3 | °C | DIN EN ISO 75 B |
| Flexural Strength | 68 ± 5 | MPa | EN ISO 178 |
| Impact resistance (Charpy) | 5.5 ± 0.5 | kJ/m2 | EN ISO 179 |
