Heat-resistant Excellent Electrical Properties Polyurethane Potting
Compounds
Product Description 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. Key Product Features- Two-part black polyurethane features a straightforward, hassle-free
dispensing process. Boasting superior fluidity and permeability, it
enables effortless pouring—compatible with both manual application
and automated machinery.
- Compliant with RoHS, REACH, and other eco-friendly standards, this
product facilitates smooth international shipments. It meets the
criteria for UL94-V0 flame retardancy and RTI-130℃ heat resistance,
with UL Yellow Card Number: QMFZ2.E352175.
- Offering strong adhesive properties, outstanding resistance to
extreme temperatures and harsh weather conditions, the product also
delivers exceptional electrical insulation and reliable mechanical
performance.
Technical Parameters Parameters | Hardener BZ-6807WT A | Resin BZ-6807WT B | Before curing | Appearance | Brown liquid | White liquid | Viscosity(cps.25℃) | 100-250 | 3000-5500 | Initial mixed viscosity(cps.25℃) | 1300±300 | Density(g/cm³.25℃) | 1.21±0.05 | 1.53±0.05 | Mixing & Curing | Mix ratio(by weight) | A:B=1:5 | Pot life 130±30g(min.25℃) | 35±10 | Curing condition | Room temperature curing | Surface drying time 30g(H.25℃) | 3.5-5.5 H | Curing time 30g(H.25℃) | 5-10 H | Curing time(Heated) | 60℃ heated 1H | After curing | Color | White | Hardness (Shore D) | 50±10 | Temperature resistance(℃) | -40~130℃ | Flame retardancy UL94 (Vertical burning) | V0 | Thermal conductivity(W/m.k) | ≥0.50 | Water absorption(24H) | ≤0.1% | Surface resistivity(Ω/sq) | ≥1.0×1013 | Volume resistivity(Ω.cm) | ≥1.0×1013 | Tensile strength(MPa) | ≥3 | Dielectric constant(at 50Hz) | ≥6 | Breakdown voltage(kV/mm) | ≥20 | Average Linear Coefficient of Thermal Expansion | 149×10-6K-1 | Comparative Tracking Index (CTI) | Ⅰ/600V |
Product Applications - Automotive Electronics: Excellent Electrical Performance, Vibration
Resistance, Flame Retardant V0 Class, Heat Stability and
Reliability
- Low-altitude aircraft: Low density can be combined with lightweight
design, flexible materials, and waterproof IP68
- Sensor: low density, flame-retardant V0, low dielectric constant,
and low-temperature resistant;
- Industrial controllers and control boards: Excellent
high-temperature resistance, compliant with RTI 130 temperature
rating standards, featuring high thermal conductivity and heat
dissipation capabilities, with V0-class fire resistance.
- Other electronic products: Flame-retardant V0, UL Yellow Card,
compliant with RTI 130 temperature resistance standard. Their
outstanding electrical and mechanical properties meet most
electronic products' requirements for high-performance materials.
Directions for Use- Pre-potting Preparation: Calibrate scales, prepare potting tools, cleaning tools, check
machine settings, check vacuum pump force, etc.
- Product Pre-treatment: Place product on a level surface or fixture. Remove dust, clean,
degrease, and dry if necessary.
- Accurate Proportioning: Manual operation requires precise mixing according to the
specified ratio and recording. Machine potting requires calibrated
ratios and first-article confirmation is recommended.
- Mixing & Stirring: Manual operation requires thorough stirring or using electric
stirrers to ensure homogeneous mixing. Machine potting requires
sufficient stirring speed, adjust as needed.
- Uniform Potting: Manual operation should be done in small, multiple batches to
ensure uniformity. Machine potting should follow the programmed
path for quantitative dispensing.
- Inspection or Secondary Potting: After potting, visually inspect as needed. Perform touch-up,
bubble removal, or secondary potting if required.
- Curing: Allow the potted and inspected products to cure at room
temperature or with heat assistance (recommended 60°C if needed),
according to product and process requirements.
- Final Product Confirmation: Perform visual inspection and performance testing as required by
the customer.
Packing & Shipping & Storage- Hardener: Typically 5KG/10KG/25KG/200KG metal or plastic drums.
- Resin: Typically 25KG/200KG metal or plastic drums.
- Store and transport as a general chemical product.
- Store sealed, protected from light at room temperature. Shelf life
varies from 6 to 12 months depending on packaging; please refer to
the expiry date on the shipping package.
- When temperature drops to 15°C or lower, the hardener or resin
should be stored in a warm place or heated before use for potting.
Specific heating recommendations depend on the temperature drop;
please communicate and consult with us.
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