Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Technologies
Features & Benefits
- Labeling Claims
- Ready-to-Use Product Features
- Special Features
- Electrically insulating
- Heat resistant
- Low viscosity
- One-component
- Self-adhesive
- Steam resistant
- Thixotropic
- UV & weathering-resistant
Applications & Uses
- Applications
- Application Area
- Cure Method
- Applications
- E-Drives (xEV/EV)
- Small Appliances
- Application Details
- Multipurpose potting and coating grade
- Surface adhesive
- Typical fields of application: household appliances, automotive, e-mobility and mechanical engineering.
Processing
Preparation:
- All surfaces must be clean and free of contaminants that will inhibit the cure of ELASTOSIL® RT 705. Examples of inhibiting contaminants are sulfur containing materials, plasticizers, urethanes, amine containing materials and organometallic compounds – especially organotin compounds.
- If a substrate’s ability to inhibit cure is unknown, a small scale test should be run to determine compatibility. To eliminate any air introduced during dispensing or trapped under components or devices a vacuum encapsulation is recommended.
- Alternatively, ELASTOSIL® RT 705 can be de-aerated prior to use; applying a vacuum of 25-50 mbar for 10-15 min is recommended.
Curing:
- ELASTOSIL® RT 705 is a one-part heat-curing silicone, the curing time of which is highly dependent on temperature and on both the size and the heat sink properties of the components being potted.
- ELASTOSIL® RT 705 is usually cured between 140 °C and 200 °C in order to secure a quick build-up of adhesion to the respective substrate.
- Typical curing temperatures and resulting curing times are given in adjacent table.
- We recommend running preliminary tests to optimize conditions for the particular application.
Temperature Curing rate 140 °C 10 min 200 °C 2 min Removal:
If removal of the silicone from machines or dispensing equipment is necessary, white spirit or similar nonpolar solvents are recommended. However, cleaning ideally should take place before the silicone is fully vulcanized. Cured silicone rubber needs to be rubbed off or removed mechanically, if necessary in combination with a swelling agent (solvent) or a chemical silicone remover.
Properties
- Flame Rating
- Typical Properties
- Cured Properties
- Uncured Properties
- Properties
Uncured:
- High extrusion rate
- Self-leveling
- Suitable for silk-screen printing
- Fast curing at elevated temperature
Cured:
- Medium hardness
- Recommended service temperature range: -50 °C to +230 °C
- UL 94 HB listed
- Note
Curing Conditions: 10 min. at 165 °C in a circulating air oven, 2 mm sheet, pressed, no post-curing for cured properties.
| Value | Units | Test Method / Conditions | |
| Recommended Service Temperature | -50 to +230 | °C | — |
| Value | Units | Test Method / Conditions | |
| Density (in water, at 23°C) | 1.2 | g/cm³ | DIN EN ISO 1183-1 A |
| Elongation (at break) | 180 | % | ISO 37 Type 1 |
| Shore Hardness A | 42 | — | DIN ISO 48-4 |
| Tear Strength | 4.6 | N/mm | ASTM D 624 B |
| Tensile Strength | 3 | N/mm² | ISO 37 Type 1 |
| Value | Units | Test Method / Conditions | |
| Density (at 23°C) | 1.24 | g/cm³ | DIN 53217 |
| Dynamic Viscosity (at 25°C, Shear rate 0.5 s⁻¹) | 72500 | mPa·s | DIN EN ISO 3219 |
| Dynamic Viscosity (at 25°C, Shear rate 25 s⁻¹) | 13000 | mPa·s | DIN EN ISO 3219 |
| Pot Life (at 23°C) | approx. 6 | months | — |
| T90 (at 130°C) | 4 | minutes | ISO 6502 |
Regulatory & Compliance
- Certifications & Compliance
- Chemical Inventories
- Quality Standards
Safety & Health
- Safety Note
According to the latest findings, the addition-curing silicone rubber ELASTOSIL® RT 705 contains neither toxic or corrosive substances which would require special handling precautions.
Packaging & Availability
- Country Availability
- Regional Availability