FAQs
What is SYLGARD 184 Silicone Encapsulant, and when should it be used?
SYLGARD 184 is a clear, two-component silicone encapsulant (10:1 mix ratio) designed for protecting electronic assemblies like LEDs, sensors, power supplies, connectors, and transformers. It provides a flexible elastomeric encapsulation with good dielectric and flame-resistant properties.
What are the curing options and times for this kit?
The encapsulant can cure at room temperature (~48 hours at ~25 °C) or can be heat-accelerated, around 35 minutes at 100 °C, 20 minutes at 125 °C, and 10 minutes at 150 °C.
What performance characteristics apply once the material is cured?
Cured SYLGARD 184 offers dielectric strength approx. 19 kV/mm, volume resistivity around 2.9 ×10¹⁴ ohm-cm, service temperature range from about -45 °C to 200 °C, and the material is optically clear for visual inspection.
How should the material be mixed and processed for the best results?
Mix the base and curing agent at a 10:1 ratio by weight or volume, ensure thorough dispersion, remove entrapped air (vacuum degas if needed), then pour or dispense. Minimize air entrapment and ensure substrates are clean and dry for optimal adhesion.
Are there any compatibility or limitations to be aware of?
Yes, certain substrates and materials may inhibit cure or reduce performance (e.g., materials containing sulfur compounds, organotin catalysts, some plasticizers). Thermal performance at extreme ends (very low or very high temperatures) may need validation for your specific application.
