Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Technologies
- Product Families
Features & Benefits
Applications & Uses
- Markets
- Cure Method
- Application Details
General Purpose Encapsulant
Processing
Caution:
Only components A and B with the same lot number may be processed together.
Surface preparation:
All surfaces must be clean and free of contaminants that will inhibit the cure of the product. 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.
Mixing:
- Component A of ELASTOSIL® RT 604 contains the platinum catalyst, component B the crosslinker. Even traces of the platinum catalyst may cause gelling of the component containing the crosslinker.
- Therefore tools (spatula, stirrers, etc.) used for handling the platinumcontaining component or the catalyzed compound must not come into contact with this component. The two components should be thoroughly mixed at a 9 : 1 ratio by weight or volume.
- To eliminate any air introduced during dispensing or trapped under components or devices a vacuum encapsulation is recommended.
Curing:
Curing time of addition curing silicone rubber is highly dependent on temperature, size and heat sink properties of the component being potted. The reactivity can be adjusted within wide limits by adding Catalyst EP or Inhibitor PT 88 to suit the processing requirements of the particular application. Catalyst EP increases the reactivity, i. e., pot life and curing time are reduced. Inhibitor PT 88 is a pot life extender and prolongs pot life and curing time.
Temperature Curing time, thickness 1 cm
23 °C 24 h 70 °C 30 min 100 °C 8 min 150 °C 5 min
Properties
- Color
- Catalyst Properties
- Cured Properties
- Uncured Properties
- Properties
- Two-part, 9 : 1 Mixing Ratio
- Very Low Viscosity
- Rapid Heat Cure
- Low Hardness
- Crystal Clear
- Note
Cured properties are cured for 30 min at 150 °C in a circulating air oven.
| Value | Units | Test Method / Conditions | |
| Dynamic Viscosity (A+B, of mix) | 800 | mPa·s | ISO 3219 |
| Mix Ratio (A:B) | 9:1 | parts by weight | — |
| Platinum Catalyst in Component (A+B) | Component A | — | — |
| Pot Life (A+B, at 23°C, up to 5000 mPa.s) | 90 | minutes | — |
| Value | Units | Test Method / Conditions | |
| Density (at 23°C) | 0.97 | g/cm³ | ISO 2781 |
| Shore Hardness A | 25 | — | ISO 868 |
| Volume Resistivity | 10¹⁵ | Ohm-cm | IEC 60093 |
| Value | Units | Test Method / Conditions | |
| Density (at 23°C, Componenet A) | 0.97 | g/cm³ | — |
| Density (at 23°C, Componenet B) | 0.97 | g/cm³ | — |
| Dynamic Viscosity (Component A, at 23°C) | 1000 | mPa·s | ISO 3219 |
| Dynamic Viscosity (Component B, at 23°C) | 200 | mPa·s | ISO 3219 |
Regulatory & Compliance
- Certifications & Compliance
Safety & Health
- Safety Note
According to the latest findings, the addition-curing silicone rubber ELASTOSIL® RT 604 A/B contains neither toxic or corrosive substances which would require special handling precautions.
Packaging & Availability
- Country Availability
- Regional Availability