Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
Features & Benefits
- Materials Features
- Ready-to-Use Product Features
- Special Features
- Electrically insulating
- Heat resistant
- Media resistant
- One-component
- Self-adhesive
- Thixotropic
- UV & weathering-resistant
Applications & Uses
- Applications
- Application Area
- Cure Method
- Applications
- Climate Control
- Heating & Cooling
- Machine Building
- White Goods
- Application Details
- Multipurpose glue
- Typical fields of application: household appliances, automotive, mechanical engineering.
Processing
Preparation:
All surfaces must be clean and free of contaminants that will inhibit the cure of ELASTOSIL® RT 702. 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 reduce the risk of bubbles or void formation during curing, ELASTOSIL ® RT 702 can be de-aerated prior to use by applying a vacuum of 25-50 mbar for 10-15 min.
Curing:
ELASTOSIL® RT 702 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 parts to be bonded. ELASTOSIL® RT 702 is usually cured between 140 °C and 200 °C in order to secure a quick build-up of adhesion to the respective substrates. 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 time, thickness 1 cm
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
- Typical Properties
- Cured Properties
- Uncured Properties
- Properties
Uncured:
- Non-slump
- Thixotropic
- Fast curing at elevated temperature
Cured:
- Suitable for FIPG and, to a certain degree, for CIPG applications
- Resistant to antifreeze agents and coolants (water/glycol mixtures)
- Outstanding heat stability
- Recommended service temperature range: -50 °C to +250 °C
- 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 +250 | °C | — |
| Value | Units | Test Method / Conditions | |
| Density (in water, at 23°C) | 1.22 | g/cm³ | DIN EN ISO 1183-1 A |
| Elongation (at break) | 500 | % | ISO 37 Type 1 |
| Shore Hardness A | 40 | — | DIN ISO 48-4 |
| Tear Strength | 10.1 | — | ASTM D 624 B |
| Tensile Strength | 6.1 | N/mm² | ISO 37 Type 1 |
| Value | Units | Test Method / Conditions | |
| Density (at 23°C) | 1.21 | g/cm³ | ISO 1183-1 A |
| Dynamic Viscosity (at 25°C, Shear rate 0.5 s⁻¹) | 800000 | mPa·s | DIN EN ISO 3219 |
| Dynamic Viscosity (at 25°C, Shear rate 25 s⁻¹) | 80000 | mPa·s | DIN EN ISO 3219 |
| Pot Life (at 23°C) | approx. 6 | months | — |
Regulatory & Compliance
- Certifications & Compliance
Safety & Health
- Safety Note
According to the latest findings, the addition-curing silicone rubber ELASTOSIL® RT 702 contains neither toxic or corrosive substances which would require special handling precautions.
Packaging & Availability
- Country Availability
- Regional Availability