Clear PU Encapsulant – 3-Year Anti-Yellowing for Nameplate Coating Applications

BZ-315 is a highly transparent, yellowing-resistant polyurethane potting resin formulated specifically for surface coating on labels, nameplates, and printed graphics. It complies with RoHS, REACH, and California Proposition 65 requirements. After curing, it develops a glossy, three-dimensional crystal-like surface with moderate hardness, remaining flexible and crack-resistant even at low temperatures. It preserves its original transparency and color for up to three years without yellowing, blending enduring aesthetic appeal with reliable protective performance. 

Key Product Features

1. Simple Handling – Two-part PU with easy mixing and good flow for smooth application.
2. Green Compliance – Meets RoHS, REACH, and California Proposition 65.
3. Production Agility – Heat-accelerated curing option boosts throughput.
4. Weather Durability – Excellent UV resistance and weatherability for outdoor use.
5. Aesthetic Excellence – Creates a glossy, 3D crystal-like finish on nameplates and labels.

Technical Parameters 

Product Applications

1. Nameplates: High transparency with a 3D crystal effect, maintaining long-term clarity and color stability.
2. Label: Yellowing-resistant, shape-retaining, and lift-proof at low temperatures.
3. Printed materials: Shields printed layers while enhancing pattern and text dimensionality.

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: 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.

Q2: 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.

Q3: 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.

Q4: 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.

Q5: 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.