PU Potting Compound – High-Transparency, Yellowing-Resistant, UL94-V2 LED Encapsulant

Product Description

BZ-211 is a flame-retardant, optically clear polyurethane system engineered for LED strips, linear fixtures, and sensor modules. It delivers robust fire resistance and dimensional stability across a broad thermal range, shielding delicate electronics from moisture, dust, and thermal stress while sustaining long-term performance integrity.

Key Product Features

1. Two-part, high-clarity system with moderate viscosity – enables bubble-free potting via manual or automated dispensing.
2. RoHS/REACH compliant for hassle-free international shipment.
3. Excellent anti-aging and UV resistance – retains near-zero yellowing after 3–5 years outdoor use.
4. UL94 V-2 certified (QMFZ2.E352175) for dependable flame retardancy.
5. High flexibility and bend endurance – resists cracking under repeated flexing.
6. Ideal for encapsulation or flood-coating of LED strips, linear lights, and compact sensors.

Technical Parameters

Product Applications

1. LED Flexible Strip Light: High transparency with V2 flame retardant rating, resistant to bending without adhesive cracking.
2. LED Outdoor Light Fixture: V2 flame retardant, anti-yellowing for more than 3 years outdoors, with waterproof protection.
3. Sensor: High transparency, flexible, resistant to high and low temperature shocks, suitable for various application scenarios.

Directions for Use

1. Pre-potting Preparation: Calibrate scales, prepare potting tools, cleaning tools, check machine settings, check vacuum pump force, etc.
2. Product Pre-treatment: Place product on a level surface or fixture. Remove dust, clean, degrease, and dry if necessary.
3. 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.
4. Mixing & Stirring: Manual operation requires thorough stirring or using electric stirrers to ensure homogeneous mixing. Machine potting requires sufficient stirring speed, adjust as needed.
5. Uniform Potting: Manual operation should be done in small, multiple batches to ensure uniformity. Machine potting should follow the programmed path for quantitative dispensing.
6. Inspection or Secondary Potting: After potting, visually inspect as needed. Perform touch-up, bubble removal, or secondary potting if required.
7. 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.
8. Final Product Confirmation: Perform visual inspection and performance testing as required by the customer.

Packing & Shipping & Storage

1. Hardener: Typically 5KG/ 10KG / 20KG/ 200KG metal or plastic drums.
2. Resin: Typically 5KG/ 10KG / 20KG / 200KG metal or plastic drums.
3. Store and transport as a general chemical product.
4. 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.
5. 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: What are the main features of the Weather-Resistant Transparent Polyurethane Potting Compounds?

A1: 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.

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: Is the compound easy to apply and cure?

A3: Yes, the potting compound has good flow characteristics for easy application and typically cures at room temperature, forming a tough and flexible protective layer.

Q4: Does the transparent nature of the compound affect its protective qualities?

A4: 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.

Q5: What types of electronics are compatible with this potting compound?

A5: 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.