Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Technologies
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Applications & Uses
- Plastics & Elastomers Processing Methods
- Application Details
ELASTOSIL® LR 3070/40 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 3070/40 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
- 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.
| Value | Units | Test Method / Conditions | |
| Brittle Point | max. -73 | °C | — |
| Dynamic Viscosity (A side) | 550000 | mPa·s | Brookfield |
| Dynamic Viscosity (B side) | 900000 | mPa·s | Brookfield |
| Elongation (at break) | 500 | % | ASTM D 412 |
| Modulus (at 100 % elongation) | 15 | kPa | — |
| Pot Life (at 25°C) | 48 | hours | — |
| Shore Hardness A | 40 | — | — |
| Shrinkage (with post cure) | 3.5 | % | — |
| Shrinkage (without post cure) | 3 | % | — |
| Specific Gravity (at 25°C) | 1.13 | g/cm³ | — |
| Tear Resistance | 25 | N/mm | ASTM D 624 B |
| Tear Resistance | 145 | — | — |
| Tensile Strength | 11.1 | mPa | — |
Regulatory & Compliance
- Certifications & Compliance
Packaging & Availability
- Country Availability
- Regional Availability
Storage & Handling
- Shelf Life
- 6 Months
- Storage Information
- ELASTOSIL® LR 3070/40 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