High-Performance PU Potting Compound for Electronics & Harnesses
Product Description
BZ-6800-8-1-T is a two-component polyurethane encapsulant formulated for insulation, sealing, and protection of power supplies, waterproof connectors, plug assemblies, and wire harnesses. Its low-viscosity design ensures deep penetration and complete component coverage, delivering robust resistance to moisture, dust, and mechanical strain. This halogen-free system complies with RoHS and REACH, operating reliably from -40°C to 120°C, with water absorption ≤0.1% and dielectric strength ≥18 kV/mm for long-term stability in demanding environments.
Key Product Features
- Weather & Moisture Resistance – Exceptional hydrophobicity with ≤0.1% water uptake after 24-hour immersion, preventing corrosion and leakage in outdoor or humid settings.
- Electrical Reliability – High surface (≥1.0×10¹³ Ω/sq) and volume (≥1.0×10¹⁴ Ω·cm) resistivity, dielectric constant ≤6 at 50Hz, and breakdown voltage ≥18 kV/mm to avoid arcing and shorts.
- Adhesion & Toughness – Strong bonding to aluminum, copper, plastics, and rubber (shear strength ≥3 MPa Al-Al), with elongation ≥30% and Shore D 65±10 hardness that withstands vibration and thermal cycling.
- Process-Friendly & Fast Cure – Simple 1:4 weight ratio (A:B) suits manual or automated dispensing. Pot life of 7–15 min at 25°C; tack-free in 20–60 min, full cure in 2–3 h ambient, or 10±2 min at 60°C for high-throughput lines.
- Regulatory Ready – Meets RoHS and REACH requirements with a halogen-free profile, supporting global compliance and greener manufacturing.
Technical Parameters
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Parameters
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Hardener
BZ-6800-8-1-T A
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Resin
BZ-6800-8-1-T B
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Before curing
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Appearance
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Brown liquid
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Black liquid
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Viscosity(mPa·s.25℃)
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100±40
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5200±1400
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Initial mixed viscosity(mPa·s.25℃)
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1250±350
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Density(g/cm³.25℃)
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1.21±0.05
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1.46±0.05
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Mixing&Curing
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Mix ratio(by weight)
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A:B=1:4
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Pot life 130±30g(min.25℃)
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7-15
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Curing condition
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Room temperature curing
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Surface drying time 30g(min.25℃)
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20-60
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Curing time 30g(H.25℃)
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2-3
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Curing time(Heated)
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60℃ heated 10±2 min
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After curing
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Color
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Black
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Hardness (Shore D)
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65±10
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Temperature resistance(℃)
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-40~120℃
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Water absorption(24H)
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≤0.1%
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Thermal conductivity(W/m.k)
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≥0.45
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Surface resistivity(Ω/sq)
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≥1.0×1013
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Volume resistivity(Ω.cm)
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≥1.0×1014
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Tensile strength(MPa)
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≤6
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Elongation at break(%)
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≥30%
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Dielectric constant(at 50Hz)
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≤6
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Breakdown voltage(kV/mm)
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≥18
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Tensile shear strength(MPa)(Al-Al)
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≥3
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Product Applications
- Power Supply Enclosures: Seals and insulates industrial power supplies, LED drivers, and battery packs, protecting internal components from dust, moisture, and thermal stress.
- Waterproof Connectors & Plugs: Enhances reliability of automotive connectors, marine plugs, and industrial interface components, ensuring IP67/IP68 protection in challenging environments.
- Wire Harnesses & Cable Assemblies: Encapsulates terminal blocks and cable junctions, preventing wire corrosion and signal interference in aerospace, automotive, and renewable energy systems.
- Outdoor Electronic Devices: Provides environmental protection for solar inverters, wind turbine controllers, and IoT sensors, ensuring long-term performance in extreme temperatures and weather conditions.
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.
