High Transparency Polyurethane Electrical Potting Compound Materials For Module

High-Transparency Polyurethane For Smart Water Meter Module Encapsulation                                                                                                     

Product Description

BZ-WN5 is a two-component polyurethane encapsulant engineered exclusively for smart water meter modules, offering ultra-high transparency, exceptional weather resistance, and low-stress protection for electronic components and LCD displays. With a 1:1 weight mix ratio and Shore A hardness of 80±10, it provides reliable waterproofing, strong adhesion to meter housings and circuit boards, and long-term stability in harsh outdoor environments. This adhesive complies with RoHS, REACH, and TSCA standards, making it ideal for export-oriented smart metering products.

Key Product Features

1. Crystal-Clear Transparency: Remains fully transparent after curing, providing unobstructed visibility of LCD displays and electronic components in smart water meters without yellowing or haze over time.
2. Extreme Weather Resistance: Withstands 500+ hours of湿热老化 (high temperature and humidity) without cracking or moisture ingress, ensuring reliable performance in outdoor and underground installations.
3. LCD-Friendly Low Stress: Formulated to minimize mechanical stress on delicate LCD screens and circuit boards, preventing display damage and extending meter lifespan.
4. Excellent Flowability: Low initial mixed viscosity (300±100 cps) allows full penetration into intricate meter structures and component gaps, ensuring uniform encapsulation and eliminating voids.
5. Rapid Curing Options: Achieves full curing in 5–6 hours at 25°C, or accelerates to just 30 minutes at 60°C, supporting flexible production schedules for both small-batch and high-volume manufacturing.
6. Eco-Friendly & Skin-Safe: Low-odor formula with no skin irritation, improving workplace safety and reducing environmental impact compared to traditional encapsulants.

Technical Parameters 

Product Applications

1. Circuit Board Encapsulation: Fully encapsulates control circuits and sensor modules in smart water meters, protecting against dust, moisture, and corrosion in underground and outdoor installations.
2. LCD Display Protection: Forms a transparent, low-stress barrier over LCD screens, preventing scratches, moisture damage, and UV-induced yellowing while maintaining clear readability.
3. Housing Sealing: Bonds meter housings and structural components, creating a waterproof seal that meets IP68 standards for submersion resistance in flooded or high-humidity environments.
4. Sensor Module Potting: Encapsulates flow sensors and pressure transducers, ensuring accurate readings and long-term stability in varying water temperature and pressure conditions.
5. Export-Oriented Meters: Complies with international environmental standards (RoHS, REACH, TSCA), making it suitable for smart water meters destined for global markets.

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 metal or plastic drums.

Resin: Typically 5KG/ 10KG / 20KG 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.