Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- Polymer Name
- Technologies
- Product Families
Features & Benefits
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
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 - - Note
Vulcanization: 15 min/165 °C; post-curing 4 h/200 °C.
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