DOWSIL EE-9100
Harmonization Code : 3208.20.90 | Paints and varnishes that are dispersed or dissolved in a non aqueous medium
Main features
- 23-Minute Pot Life at 25 deg C
- 25 kV/mm Dielectric Strength
- 0.31 W/(m K) Thermal Conductivity
Product Description
DOWSIL EE-9100 Primerless RTV Encapsulant is a two-part, white, flowable polydimethylsiloxane encapsulant for protecting PCB and electrical assemblies. It uses a 10:1 mix ratio, with typical base viscosity of 13,500 cP and mixed viscosity of 8,700 cP. Pot life is 23 minutes at 25 deg C. After mixing, the material cures to a flexible elastomer and requires no post-cure. Typical properties include Shore A 35 hardness, 25 kV/mm dielectric strength, 1.6 x 10^16 ohm cm volume resistivity, and 0.31 W/(m K) thermal conductivity. Pouring, needle application, automated meter-mixing, and hand mixing are listed processing methods.
Key features
- Two-part mix ratio: The two-part system uses a 10:1 mix ratio; the ratio basis is not specified.
- Room-temperature pot life: Typical pot life is 23 minutes at 25 deg C.
- Dielectric strength: Typical dielectric strength is 25 kV/mm.
Applications
Protection and encapsulation of printed circuit boards and electrical/electronic assemblies.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Thermal Properties
Electrical Properties
Additional Information
Before-processing encapsulant properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Mix ratio | 10:1 | Two-part system; basis not stated | |
| Viscosity, base | 13,500 | cP | Typical |
| Viscosity, mixed | 8,700 | cP | Typical |
| Pot life | 23 | min | Typical; at 25 deg C; time for viscosity to double after mixing |
Cured encapsulant properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Thermal conductivity | 0.31 | W/(m K) | Typical |
| Durometer | 35 | Shore A | Typical; JIS Type A |
| Dielectric strength | 25 | kV/mm | Typical |
| Volume resistivity | 1.6 x 10^16 | ohm cm | Typical |
| Dissipation factor | 0.003 | Typical; 1 MHz | |
| Dielectric constant | 3.0 | Typical; 1 MHz |
