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Identification & Functionality
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Features & Benefits
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Applications & Uses
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- Compatible Polymers & Resins
- Compatible Substrates & Surfaces
- Coating Type
- Applications
Architectural Textiles
- Application Details
ELASTOSIL® RD 6620 F is a silicone rubber dispersion in xylene. Due to the high Shore hardness after vulcanization, a matt, non-blocking surface is obtained. ELASTOSIL® RD 6620 F is therefore especially well suited for the application as topcoat on flexible silicone coatings.
Processing
- ELASTOSIL® RD 6620 F is processed by thorough incorporation of a crosslinker.
- Recommended ratio is 100 parts of ELASTOSIL® RD 6620 F plus - 1 part of CROSSLINKER W Pot life at 23°C: 3 days
- Recommended curing conditions: evaporation of the solvent at 70 - 90°C and curing of the silicone rubber for 3 min at 150°C or 1 min at 180°C.
- Adhesion of ELASTOSIL® RD 6620 F depends on substrate and can be varied by crosslinker type/amount and additives (e. g. CATALYST C05 or adhesion promoters).
- Preliminary testing should be carried out to determine optimum formulation and cure conditions.
Properties
- Physical Form
- Cured Properties
- Uncured Properties
- Properties
- Matt topcoat
- Reduced coefficient of friction
- High abrasion stability
- Note
Cure conditions: mixture 100 parts RD 6620 F + 1 parts CROSSLINKER W, 5 min / 165°C.
| Value | Units | Test Method / Conditions | |
| Density | 1.37 | g/cm³ | DIN EN ISO 1183-1 A |
| Dissipation Factor (tan δ, at 50Hz) | 110 x 10⁻⁴ | — | IEC 62631-2-1 |
| Electric Strength | 23 | kV/mm | IEC 60243-1 |
| Elongation (at break) | 280 | % | ISO 37 Type 1 |
| Oxygen Index (LOI) | 28 | % | ASTM D 2863 |
| Relative Permittivity (at 50Hz) | 3.3 | — | IEC 62631-2-1 |
| Shore Hardness A | 80 | — | DIN ISO 48-4 |
| Tear Strength | 15 | N/mm | ASTM D 624 B |
| Tensile Strength | 5.5 | N/mm² | ISO 37 Type 1 |
| Volume Resistivity | 8 x 10¹⁵ | Ohm-cm | IEC 62631-3-1 |
| Value | Units | Test Method / Conditions | |
| Density | 1.05 | g/cm³ | ISO 2811 |
| Dynamic Viscosity (at 23°C, 2.5 rpm) | 200000 | mPa·s | Brookfield |
Packaging & Availability
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- Packaging Information
This product is available in 25 kg pails and 180 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.