Knowde Enhanced TDS
Identification & Functionality
- Additives Included
- Chemical Family
- Polymer Name
- Technologies
- Product Families
Features & Benefits
Applications & Uses
- Cure Method
- Plastics & Elastomers End Uses
- Plastics & Elastomers Processing Methods
- Applications
- Dairy Applications
- General Automotive Parts
- Molded Parts
- Profiles & Tubings
- Application Details
- ELASTOSIL® R 490/55 OH is suitable both for extrusion of tubes and profiles and for compression, transfer and injection molding.
- The vulcanizates maintain flexibility to temperatures even lower than -100 °C.
- Postcured parts can be used for food contact applications and are suitable for use under the Recommendation "XV. Silicones" of the BfR and FDA § 177.2600 under observance of any given limitations on extractable and volatile substances.
Processing
- The raw rubber requires the addition of peroxides for vulcanization at elevated temperatures. A homogeneous incorporation is a must, but please avoid temperatures >30°C along the incorporation process in order to maintain best processing behavior. Pot life is depending on the used peroxide and storage condition.
Properties
- Cured Properties
- Properties
This product can be used within a temperature range of - 55°C to + 210 °C. The addition of heat stabilizers at service temperatures of more than 180°C is recommended.
- Note
Cure conditions (post-cured 4 h / 200 °C):
- 2 % ELASTOSIL® AUX Crosslinker E (50% paste of bis-(2,4-dichlorobenzoyl)-peroxide in silicone fluid); 10 min / 135°C in press.
- 0.7 % ELASTOSIL® AUX Crosslinker C1 (Dicumylperoxide); 15 min /165 °C in press.
| Value | Units | Test Method / Conditions | |
| Compression Set (Curing Agent C1, at 22 hours, 175°C) | 28 | % | DIN ISO 815-1 type B method A |
| Compression Set (Curing Agent E, at 22 hours, 175°C) | 39 | % | DIN ISO 815-1 type B method A |
| Density (Curing Agent C1) | 1.17 | g/cm³ | DIN EN ISO 1183-1 A |
| Density (Curing Agent E) | 1.17 | g/cm³ | DIN EN ISO 1183-1 A |
| Elongation (at break, Curing Agent C1) | 520 | % | ISO 37 Type 1 |
| Elongation (at break, Curing Agent E) | 500 | % | ISO 37 Type 1 |
| Rebound Resilience (Curing Agent C1) | 48 | % | ISO 4662 |
| Rebound Resilience (Curing Agent E) | 40 | % | ISO 4662 |
| Shore Hardness A (Curing Agent C1) | 53 | — | DIN ISO 48-4 |
| Shore Hardness A (Curing Agent E) | 50 | — | DIN ISO 48-4 |
| Tear Strength (Curing Agent C1) | 30 | N/mm | ASTM D 624 B |
| Tear Strength (Curing Agent E) | 33 | N/mm | ASTM D 624 B |
| Tensile Strength (Curing Agent C1) | 11 | N/mm² | ISO 37 Type 1 |
| Tensile Strength (Curing Agent E) | 11 | N/mm² | ISO 37 Type 1 |
Regulatory & Compliance
- Certifications & Compliance
Packaging & Availability
- Country Availability
- Regional Availability
- Packaging Information
This product is available in 20 kg and 540 kg cardboard packaging.
Storage & Handling
- Storage Information
Please store the cardboard boxes in a dry and cool place. Already opened boxes should be closed again to avoid any contamination.