DOWSIL 3-1818
Harmonization Code : 5906100000 | Adhesive tape of a width not exceeding 20cm
Main features
- Glass-Bead Bondline Control
- 1.68 W/(m K) Thermal Conductivity
- 10-Minute Cure at 150 deg C
Product Description
DOWSIL 3-1818 Thermally Conductive Adhesive is a one-part, gray, flowable silicone adhesive for thermally conductive bonding in electronic assemblies. The material contains glass beads for bondline control and has a typical viscosity of 758,000 cP with a thixotropy value of 3.4. Cure schedules include 60 minutes at 100 deg C, 45 minutes at 125 deg C, and 10 minutes at 150 deg C. Typical cured thermal conductivity is 1.68 W/(m K), with typical unprimed aluminum adhesion of 560 psi.
Key features
- Glass-bead bondline control: The adhesive contains glass beads for controlled bondline thickness.
- Cured thermal conductivity: Typical cured thermal conductivity is 1.68 W/(m K).
- Elevated-temperature cure: The shortest listed cure schedule is 10 minutes at 150 deg C.
Applications
Thermally conductive bonding in electronic assemblies where controlled bondline thickness and heat transfer are required.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
ColorColor
GraySpecific GravitySpecific Gravity
2.63Physical Properties
Thixotropic indexThixotropic index
3.4ViscosityViscosity
76,000 mPa.sElectrical Properties
Dielectric StrengthDielectric Strength
16 kV/mmVolume ResistivityVolume Resistivity
6.85 E+13 Ohms⋅cmThermal Properties
Temperature RangeTemperature Range
-45°C to 200 °CThermal ConductivityThermal Conductivity
1.7 W/m.KAdditional Information
Technical properties
As-supplied / before-processing properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | Gray | - | As supplied |
| Number of parts | 1 | part | As supplied |
| Flow behavior | Flowable | - | As supplied |
| Viscosity | 758,000 | cP | As supplied |
| Thixotropy | 3.4 | - | As supplied |
| Bondline control | Glass beads | - | As supplied |
| Heat-cure schedule | 60; 45; 10 | minutes | At 100; 125; 150 deg C, respectively |
