Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- Polymer Name
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Materials Features
- Special Features
- Low volatile
- Fast curing
- Food-contact
- High tear-resistant
Applications & Uses
- Markets
- Applications
- Plastics & Elastomers End Uses
- Plastics & Elastomers Processing Methods
- Applications
- Baby Care
- Dairy Applications
- Medical Equipment
- Molded Parts
- Sanitary
- Application Details
- ELASTOSIL® LR 5040/70 A/B is designed for the automated, high volume production of injection molded articles. Properly cured vulcanizates of ELASTOSIL® LR 5040/70 A/B can be used for food contact applications and are suitable for use under the Recommendation "XV. Silicones" of the BfR and FDA 21 CFR §177.2600 "Rubber Articles Intended for Repeated Use" considering any given limitations on extractable and volatile substances.
- Properly cured materials meet the limit of 0.5 % for volatile substances in accordance with BfR “XV. Silicones”, DIN EN 1400:2014-07 and DIN EN 14350-2:2004-11, respectively. Consequently, post-curing may not be necessary, however, as the results may vary with the processing conditions and the geometry of the finished article, it is the responsibility of the person placing the article on the market to verify compliance with all relevant requirements and regulations.
- Since the measured volatile content increases with decreasing thickness of a part, in particular very thin-walled articles have to be carefully checked for compliance with any relevant limitations for volatile matter.
Processing
The A and B components are delivered ready to use in 20 kg pail and 200 kg drum kits. With adequate metering equipment, they can be pumped directly from the original containers into the injection molding machine and mixed by a static mixer. The mixing ratio is 1 : 1. At room temperature, mixtures of A and B components have a pot life of at least one day.
Properties
- Physical Form
- Cured Properties
Value Units Test Method / Conditions Density 1.13 g/cm³ DIN EN ISO 1183-1 A Elongation (at break) 370 % ISO 37 Type 1 Shore Hardness A 70 - DIN ISO 48-4 Tear Strength 36 N/mm ASTM D 624 B Tear Strength 12 N/mm DIN ISO 34-1 A Tensile Strength 9.5 N/mm² ISO 37 Type 1 Volatile Content (determined for press-cured sheets having 2 mm thickness. For thinner articles the volatile content can be higher.) max. 0.4 % BfR Recommendation XV. Silicones - Uncured Properties
Value Units Test Method / Conditions Dynamic Viscosity (Shear rate 1 s⁻¹) 1800000 mPa·s DIN EN ISO 3219 Dynamic Viscosity (Shear rate 10 s⁻¹) 630000 mPa·s DIN EN ISO 3219 - Note
Cure conditions: 5 min / 165 °C in press for cured propeties.
Regulatory & Compliance
Technical Details & Test Data
- Test Results
The following studies were performed on vulcanizates of ELASTOSIL® LR 5040/70 A/B according to ISO 10993:
- Hemocombatibility (Hemolysis and Thrombogenicity) (ISO 10993-4)
- Cytotoxicity (ISO 10993-5)
- Sensitation LLNA (ISO 10993-10)
- Pyrogenicity (ISO 10993-11)
The following studies were performed on vulcanizates of ELASTOSIL® LR 5040/70 A/B according to USP class VI:
- Acute systemic toxicity
- Intracutaneous toxicity
- Implantation test
No adverse effects have been detected at any of the studies performed.
Packaging & Availability
- Country Availability
- Packaging Type
- Regional Availability
- Packaging Information
This product is available in 20 kg pail and 200 kg drum kits.
Storage & Handling
- Storage Information
Once opened, containers should always be resealed after use to prevent the platinum catalyst from being poisoned by amines, sulfur or phosphorus compounds.