Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
Applications & Uses
- Cure Method
- Plastics & Elastomers Processing Methods
- Application Details
- ELASTOSIL® R plus 4305/80 US is intended for fabrication of extruded articles that afford high transparency and very good tear resistance values.
- ELASTOSIL® R plus 4305/80 US may not be cured with peroxides, only with the catalyst batch ELASTOSIL® AUX PT1. ELASTOSIL® R plus 4305/80 US and Curing Agent PT 1 are mixed homogeneously on a roll mill in a ratio of 100 : 1.5.
- Care must be taken to keep the mill and compound as cool as possible during mixing. The temperature of the rubber should not exceed 35°C or risk partial curing and reduced pot life.
- Crosslinking begins when Curing Agent PT 1 has been added. The rate and degree of crosslinking depends on the storage time and temperature. At 23°C, the mixture has a pot life of about 24 hours. This can be extended by storing the catalyzed mixture at a lower temperature.
Properties
- Typical Properties
- Note
Vulcanization: 15 min/165 °C; post-curing 4 h/200 °C.
| Value | Units | Test Method / Conditions | |
| Compression Set (at 22 hours, 175°C) | 10 | % | DIN ISO 815-B |
| Pot Life (at 23°C) | 24 | Hours | — |
| Elongation (at break) | 350 | % | ASTM D 412 |
| Pot Life | 24 | hours | WSTM 2299 |
| Rebound Resilience | 62 | % | DIN 53512 |
| Shore Hardness A | 80 | — | DIN 53505 |
| Specific Gravity | 1.19 | g/cm³ | — |
| Tear Strength | 21 | N/mm | — |
| Tensile Strength | 7.8 | N/mm² | — |
Regulatory & Compliance
- Certifications & Compliance
- Chemical Inventories
- Compliance
Properly postcured vulcanizates of ELASTOSIL® R plus 4305/80 US comply with BfR and FDA food contact regulations. The material also passes USP XXIII Class VI.
Packaging & Availability
- Country Availability
- Regional Availability