Flexible Transparent PU Potting Compound with Anti-Yellowing for LED Strips
Product Description
BZ-3328-1 is a yellowing-resistant transparent polyurethane engineered specifically for flexible LED strips and lighting fixtures. Rated for outdoor use, it provides three-year UV stability while retaining outstanding flexibility and bend endurance. It delivers reliable waterproofing for common LED strips and displays, forming a protective seal that guards LED chips and FPC circuits against moisture ingress. This ensures consistent, long-term performance of flexible LED lighting systems even under demanding conditions.
Key Product Features
- Two-part PU system with straightforward handling and moderate flow for easy application.
- Fully compliant with RoHS and REACH environmental directives.
- Heat-accelerated curing available for improved turnaround efficiency.
- Superior weather and UV resistance support up to 3 years of outdoor service.
- Highly flexible and kink-resistant, offering dependable protection for LEDs and FPC boards.
Technical Parameters
|
Parameters
|
Hardener
BZ-3328-1 A
|
Resin
BZ-3328-1 B
|
|
Before curing
|
Appearance
|
Clear liquid
|
Clear liquid
|
|
Viscosity(mPa·s.25℃)
|
4300±1500
|
1050±350
|
|
Initial mixed viscosity(mPa·s.25℃)
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1900±600
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|
Density(g/cm³.25℃)
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1.11±0.05
|
1.03±0.05
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|
Mixing
&
Curing
|
Mix ratio(by weight)
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A:B=1:1
|
|
Pot life 130±30g(min.25℃)
|
14-26min
|
|
Curing condition
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Room temperature curing
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|
Surface drying time 30g(H.25℃)
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4-6
|
|
Curing time 30g(H.25℃)
|
8-12
|
|
Curing time 30g(Heated)
|
60℃ heated 2H
|
|
After curing
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Hardness (Shore A)
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45±5
|
|
Temperature resistance(℃)
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-40~85℃
|
|
Water absorption(24H)
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≤1.0%
|
|
Surface resistivity (Ω/sq)
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≥1.0×1012
|
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Volume resistivity (Ω.cm)
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≥1.0×1012
|
|
Tensile strength(MPa)
|
≤3
|
|
Elongation at break(%)
|
≥100%
|
|
Dielectric constant(at 50Hz)
|
≥8
|
|
Breakdown voltage(kV/mm)
|
≥14
|
Product Applications
- LED flexible light strip: 45A Shore hardness, 90°C bendability, 100% elongation at break, enabling versatile installation.
- LED strip light: Excellent flexibility and LED protection, -40°C to 85°C range, suitable for harsh environments.
- LED display: Flexible encapsulation protects the full display, enables flexible installation, and ensures a smooth surface for tight glass-substrate adhesion.
- Sensor: Flexible potting offers full display protection and flexible installation, with a smooth surface for tight glass bonding. Soft, low-stress design protects internal electronics effectively.
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 / 20KG/ 200KG metal or plastic drums.
Resin: Typically 5KG/ 10KG / 20KG / 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.
FAQ
Q1: Does the transparent nature of the compound affect its protective qualities?
A1: No, the transparency of the polyurethane potting compound does not compromise its protective features; it still provides excellent insulation and environmental protection while allowing visual inspection of the encapsulated components.
Q2: Can this potting compound be used for outdoor electronic applications?
A2: Yes, the weather-resistant properties of this transparent polyurethane potting compound make it suitable for outdoor use, providing protection against UV rays, rain, and temperature fluctuations.
Q3: What are the main features of the Weather-Resistant Transparent Polyurethane Potting Compounds?
A3: This potting compound offers excellent weather resistance, high transparency, strong adhesion, and durability, making it ideal for protecting electronic components from moisture, dust, and environmental damage.
Q4: What types of electronics are compatible with this potting compound?
A4: It is compatible with a wide range of electronic components, including circuit boards, sensors, connectors, and LED assemblies, especially those requiring clear encapsulation and protection from harsh environmental conditions.
Q5: Is the compound easy to apply and cure?
A5: Yes, the potting compound has good flow characteristics for easy application and typically cures at room temperature, forming a tough and flexible protective layer.
