GF400 is a high-efficiency thermal conductive silicone two-part potting compound with a thermal conductivity of 4.0 W/(m·K). It is divided into A/B components and mixed according to 1:1. After mixing evenly, it can self-discharge and solidify at room temperature. Dustproof, waterproof and shockproof, flame retardant, sealing, bonding, thermal conductivity and excellent caulking effect, it can be used for thermal conductivity packaging of heating electronic components.
4.0 W/(m·K)
Electrically insulating
High conformability
Flexible working time
Industrial: LEDs, Power Supplies
Automotive: OBC, DC/DC
Converter, Amplifiers
Properties | Attribute | Test Method |
Color(A/B) | Pink/White | Visual |
Viscosity(cps) | part A: 6,000±1,000 | ASTM D2196 @6 needle,V:100RPM |
part B: 6,000±1,000 | ||
Pot Life(h @25℃) | 1 to 1.5 | The time for the viscosity to rise to twice the initial value after AB is mixed together |
Cure Time(h @25℃) | ＜24 | |
Leveling Property(20mL @5min） | ≥100 | / |
Post-Curing | ||
Density(g/cc) | 2.5±0.2 | ASTM D792 |
Hardness(Shore 00) | 50±10 | ASTM D2240 |
Tensile Strength(MPa) | ≥0.05 | ASTM D412 |
Elongation at Break(%) | ＞30 | ASTM D412 |
Tear Strength(N/mm) | ≥0.1 | ASTM D624 |
Low Molecular Siloxanes D3-D10(ppm) | ≤100 | US EPA 3550C: 2007 US EPA 3550C: 2018 |
Usage Temperature(°C) | -40 to 150 | / |
Flammability | V-0 | UL 94 |
Shelf Life(months) | 6 | Store sealed at<40°C; protect from direct sunlight. |
Electrical | ||
Breakdown Voltage(kV/mm) | ＞7.0 | ASTM D149 |
Dielectric Constant(@1MHz) | 6.0±1.0 | ASTM D150 |
Volume Resistivity(Ω·cm) | ＞1011 | ASTM D257 |
Thermal | ||
Thermal Conductivity(W/(m·K)) | 2.0±0.2 | ISO 22007-2 |
Coefficient of Thermal Expansion@-40~150℃ (ppm/℃) | 120 | ASTM E831-2014 |
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