Fast-Cure Polyurethane Potting Compound for High-Efficiency Power
Electronics Production
BZ-6806-6-3R is a high-performance two-component polyurethane
potting compound optimized for fast, reliable insulation, sealing,
and waterproof protection of electronic/electrical power supplies,
industrial controllers, power tool control boards, and new energy
vehicle converters. Boasting UL94 V-0 flame retardancy, ultra-rapid
curing capabilities, and enhanced thermal conductivity, it
streamlines production workflows while meeting stringent safety
standards. Compliant with RoHS regulations, this formula delivers
stable performance across -40℃ to 120℃, with low water absorption (≤0.5%) ensuring long-term durability
in high-power electronic applications. Key Product Features- Top-tier Fire Safety: UL94 V-0 flame retardant certified, effectively inhibiting flame
spread to protect high-risk electronic assemblies
- Ultra-rapid Curing Efficiency: Fully cures in 2-6 hours at room temperature, or ≤20 minutes with
60°C heating, ideal for high-volume production
- Convenient Mixing Ratio: 1:5 weight ratio simplifies operation, reduces waste, and is
compatible with automated dispensing systems
- Efficient Thermal Management: Thermal conductivity ≥0.50 W/m·k, rapidly dissipates component
heat to extend service life
- Reliable Electrical Insulation: Breakdown voltage ≥15 kV/mm, surface resistivity ≥1.0×10¹¹ Ω/sq,
providing excellent isolation performance
- Balanced Mechanical Properties: Shore A hardness 73±10, combining flexibility and vibration
resistance to adapt to thermal expansion/contraction stresses
- Global Compliance: Meets RoHS environmental standards and UL94 V-0 fire safety
certification, satisfying international market access requirements
Technical Parameters Parameters | Hardener BZ-6806-6-3R A | Resin BZ-6806-6-3R B | Before curing | Appearance | Brown liquid | Black liquid | Viscosity(mPa·s.25℃) | 400±150 | 12000±5000 | Initial mixed viscosity(mPa·s.25℃) | 2800±800 | Density(g/cm³.25℃) | 1.20±0.05 | 1.65±0.05 | Mixing & Curing | Mix ratio(by weight) | A:B=1:5 | Pot life 130±30g(min.25℃) | 10-60 (Adjustable for process/temperature ) | Curing condition | Room temperature curing | Surface drying time 30g(H.25℃) | 0.5-2 (Adjustable for process/temperature ) | Curing time 30g(H.25℃) | 2-6 (Adjustable for process/temperature ) | Curing time(Heated) | 60℃ heated ≤20 min | After curing | Color | Black | Hardness (Shore A) | 73±10 | Temperature resistance(℃) | -40~120℃ | Flame retardancy UL94 | V0 | Thermal conductivity(W/m.k) | ≥0.50 | Water absorption(24H) | ≤0.5% | Surface resistivity(Ω/sq) | ≥1.0×1011 | Volume resistivity(Ω.cm) | ≥1.0×1010 | Tensile strength(MPa) | ≥2 | Dielectric constant(at 50Hz) | ≥4 | Breakdown voltage(kV/mm) | ≥15 |
Product Applications- High-Volume Power Supplies: Encapsulates consumer electronics chargers, industrial power
inverters, and server power units, supporting rapid production
lines.
- New Energy Vehicle Components: Insulates battery management systems (BMS), on-board chargers,
and DC-DC converters, withstanding extreme temperature fluctuations
and mechanical vibration.
- Industrial Controllers: Seals PLCs, motor drives, and power tool control boards,
protecting against dust, moisture, and harsh manufacturing
environments.
- Renewable Energy Systems: Protects solar inverters and wind turbine controllers, ensuring
long-term reliability in outdoor installations with fire safety
requirements.
- Telecommunications Infrastructure: Encapsulates base station power modules and signal processing
units, enhancing durability in enclosed telecom cabinets.
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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