BZ-6807(WT) Polyurethane potting compound is a white, heat-resistant, high-performance flame-retardant V0-grade polyurethane. This polyurethane boasts excellent electrical and mechanical properties, meeting the RTI 130°C heat resistance standard. It effectively fulfills the performance requirements for potting compounds in power modules, control boards, sensors, and general power electronic devices.
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Parameters |
Hardener BZ-6807WT A |
Resin BZ-6807WT B |
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Before curing |
Appearance |
Brown liquid |
White liquid |
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Viscosity(cps.25℃) |
100-250 |
3000-5500 |
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Initial mixed viscosity(cps.25℃) |
1300±300 |
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Density(g/cm³.25℃) |
1.21±0.05 |
1.53±0.05 |
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Mixing & Curing
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Mix ratio(by weight) |
A:B=1:5 |
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Pot life 130±30g(min.25℃) |
35±10 |
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Curing condition |
Room temperature curing |
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Surface drying time 30g(H.25℃) |
3.5-5.5 H |
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Curing time 30g(H.25℃) |
5-10 H |
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Curing time(Heated) |
60℃ heated 1H |
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After curing
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Color |
White |
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Hardness (Shore D) |
50±10 |
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Temperature resistance(℃) |
-40~130℃ |
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Flame retardancy UL94 (Vertical burning)
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V0 |
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Thermal conductivity(W/m.k) |
≥0.50 |
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Water absorption(24H) |
≤0.1% |
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Surface resistivity(Ω/sq) |
≥1.0×1013 |
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Volume resistivity(Ω.cm) |
≥1.0×1013 |
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Tensile strength(MPa) |
≥3 |
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Dielectric constant(at 50Hz) |
≥6 |
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Breakdown voltage(kV/mm) |
≥20 |
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Average Linear Coefficient of Thermal Expansion |
149×10-6K-1 |
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Comparative Tracking Index (CTI) |
Ⅰ/600V |
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