High-Strength Polyurethane Potting Compound for LED & Automotive Lighting
Product Description
BZ-6803 is a two-component polyurethane potting compound optimized for insulation, sealing, and moisture-proof protection of LED lamps, vehicle lighting systems, power controllers, and electronic control boards. With balanced fluidity and high penetration capability, it fully encapsulates intricate components, providing robust defense against environmental factors while maintaining mechanical integrity. Compliant with RoHS/REACH regulations and halogen-free, this formula delivers reliable performance across -40℃ to 120℃, featuring high tensile strength (≥8 MPa) and low water absorption (≤0.5%) for long-term stability in automotive and outdoor lighting applications.
Key Product Features
- Multi-Color Customization: Available in white, black, or beige to match aesthetic requirements of lighting fixtures and electronic assemblies.
- High Mechanical Strength: Shore A 72-88 hardness with ≥8 MPa tensile strength and ≥50% elongation, resisting vibration and impact in automotive applications.
- Superior Electrical Insulation: Surface/volume resistivity ≥1.0×10¹³ Ω/sq/Ω·cm and breakdown voltage ≥16 kV/mm ensure reliable component isolation.
- Efficient Processing: 1:4 mix ratio, 24-40 minute pot life, and fast curing (2-3 hour surface dry, 4-6 hour full cure at 25℃; ≤60 min at 60℃).
- Wide Temperature Stability: Operates reliably from -40℃ to 120℃, withstanding extreme cold and continuous heat in outdoor and automotive environments.
- Global Compliance: RoHS/REACH compliant with halogen-free formulation, meeting international manufacturing standards.
Technical Parameters
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Parameters
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Hardener
BZ-6803 A
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Resin
BZ-6803 B
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Before curing
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Appearance
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Light yellow/Brown clear liquid
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White/Black/Beige liquid
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Viscosity(mPa·s.25℃)
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60-260
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2500-6000
|
|
Initial mixed viscosity(mPa·s.25℃)
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850-1650
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|
Density(g/cm³.25℃)
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1.16±0.05
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1.35±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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24-40
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Curing condition
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Room temperature curing
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Surface drying time 30g(H.25℃)
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2-3
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Curing time 30g(H.25℃)
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4-6
|
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Curing time(Heated)
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60℃ heated ≤60 min
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After curing
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Color
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White/Black/Beige
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Hardness (Shore A)
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72A-88A
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Temperature resistance(℃)
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-40~120℃
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|
Flame retardancy UL94
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HB-V2
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Thermal conductivity(W/m.k)
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≥0.40
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Water absorption(24H)
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≤0.5%
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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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≥1.0×1013
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|
Tensile strength(MPa)
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≥8
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Elongation at break(%)
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≥50%
|
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Dielectric constant(at 50Hz)
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≤7
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Breakdown voltage(kV/mm)
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≥16
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Product Applications
- LED Lighting Drivers: Provides thermal management and fire safety for indoor/outdoor LED fixtures.
- Power Supply Units: Seals AC/DC power supplies, inverters, and chargers against moisture and dust.
- Home Appliance Control Boards: Insulates sensitive circuits in refrigerators, HVAC systems, and washing machines.
- Industrial Electronics: Protects PLCs, motor controllers, and sensors from vibration and chemical exposure.
- Custom Assemblies: Versatile sealing for medical devices, automotive electronics, and IoT sensors with strict safety requirements.
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.
