Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- Polymer Name
- Technologies
- Product Families
Applications & Uses
- Plastics & Elastomers Processing Methods
- Application Details
ELASTOSIL® LR 3070/50 US A/B can be processed using standard liquid rubber injection molding techniques for over molding or co-molding (2K processes) without special treatment of the mold surface. Parts made from ELASTOSIL® LR 3070-series can be used for technical applications without post curing but do not comply with regulations for pharmaceutical or food contact.
Processing
ELASTOSIL® LR 3070/50 US A/B is a 2-part, 1:1 ratio system. Parts A and B are delivered in matching quantities in 20-kg and 200-kg pails and drums. With proper metering equipment, product can be pumped 1:1 (A:B) directly from the containers into a static mixer and the injection molding machine. The mixed pot life in the closed system is 2-3 days. Note: New molds should be “seasoned” with ELASTOSIL® LR 3003 for 100 shots prior to production.
Properties
- Cured Properties
Value Units Test Method / Conditions Brittle Point max. -73 °C - Dynamic Viscosity (A side) 550000 mPa·s - Dynamic Viscosity (B side) 900000 mPa·s - Elongation (at break) 500 % - Modulus (at 100 % elongation) 15 kPa - Pot Life (at 25°C) 48 hours - Shore Hardness A 50 - - Shrinkage (with post cure) 3.5 % - Shrinkage (without post cure) 3 % - Specific Gravity 1.13 g/cm³ - Tear Resistance 145 - - Tear Resistance 25 N/mm - Tensile Strength 11.1 mPa - - Properties
ELASTOSIL® LR 3070 series are primerless self-bonding grades that adhere to various plastic substrates e.g. PA, PBT and metals, but not to the mold surface. The bonding is improved by oven-cure for 1 hour at 100°C or 24 hours at room temperature. Because of individual surface properties, each substrate must be tested before production.
- Note
Cure conditions : Press cure 5 mins at 165°C.
Regulatory & Compliance
- Certifications & Compliance
- Chemical Inventories
Packaging & Availability
- Country Availability
- Regional Availability
Storage & Handling
- Shelf Life
- 6 Months
- Storage Information
- ELASTOSIL® LR 3070/50 US A/B has a shelf life of 6 months when stored below 32°C in the tightly closed original container.
- Storage beyond the recommended shelf-life does not necessarily mean that the product is no longer usable.
- However, the properties required for the intended use must be checked for quality assurance reasons.
- Once opened, containers should always be resealed to prevent catalyst poisoning by amines, sulfur compounds, and other substances