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ELASTOSIL® LR 3071/30 A/B

ELASTOSIL® LR 3071/30 A/B is a self-adhesive liquid silicone rubber of the ELASTOSIL® LR 3071 series. This product is a paste-like, easily pigmentable, two-component compound with an extremely short curing time. Its vulcanizates are noted for excellent mechanical and electrical properties.

Brand: ELASTOSIL® LR (114 products)

Polymer Name: Liquid Silicone Rubber (LSR)

End Uses: Bathroom Accessories

Features: Cost Effective, Fast Curing, Food Contact Acceptable, Good Electrical Properties, Good Mechanical Properties, Low VOC, Low Volatility, Pigmentable

Tear Strength: 20.0 - 20.0 kN/m

Technical Data Sheet

Enhanced TDS

Knowde-enriched technical product data sheet

Identification & Functionality

Features & Benefits

Applications & Uses

Markets
Applications
Plastics & Elastomers End Uses
Applications
  • Baby Care
  • Dairy Applications
  • Molded Parts
  • Sanitary
Application Details

ELASTOSIL® LR 3071 series are particularly suitable for the economical production of large series of overmolded parts (thermoplastic/elastomer), even in a comolding process (shuttle mold) under standard conditions, without any special treatment of the mold surface. Parts made from ELASTOSIL® LR 3071 can generally be used for technical applications without postcuring. Postcured parts can be used for food contact applications and are suitable for use under the Recommendation "XV. Silicones" of the BfR and FDA § 177.2600 under observance of any given limitations on extractable and volatile substances.

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 three days.

Note : Start-up of new molds should be supported by use of ELASTOSIL® AUX Mold Release Agent 32.

Properties

Physical Form
Cured Properties
ValueUnitsTest Method / Conditions
Compression Set (at 22 hours, 125°C)40%DIN ISO 815-1 type B method A
Compression Set (at 22 hours, 150°C)70%DIN ISO 815-1 type B method A
Density1.09g/cm³DIN EN ISO 1183-1 A
Elongation (at break)780%ISO 37 Type 1
Rebound Resilience60%ISO 4662
Shore Hardness A30-DIN ISO 48-4
Tear Strength20N/mmASTM D 624 B
Tensile Strength8.2N/mm²ISO 37 Type 1
Uncured Properties
ValueUnitsTest Method / Conditions
Dynamic Viscosity (Shear rate 1 s⁻¹)660000mPa·sDIN EN ISO 3219
Dynamic Viscosity (Shear rate 10 s⁻¹)280000mPa·sDIN EN ISO 3219
Properties

ELASTOSIL® LR 3071 series are primerless, selfbonding grades that adhere to various plastic substrates (e.g. PA, PBT) and metals, but not in the mold (adhesive adherence, protects against loss prior to assembly). The bonding is improved by a subsequent heat treatment process (e.g. one hour at 100°C) or by a longer storing at room temperature. Because of the individual surface properties each substrate must be tested before mass production. If necessary one has to check the development of adhesive properties over time and/or in an environment relevant to the application. The vulcanizates are noted for good mechanical and electrical properties.

Note

Cure conditions : 5 min / 165°C in press.

Regulatory & Compliance

Packaging & Availability

Country Availability
Packaging Type
Regional Availability
  • Africa
  • Asia
  • Europe
  • Latin America
  • Middle East
  • North America
  • Oceania
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.