BZ-6801-22-H is a two-component polyurethane potting material developed specifically for new-energy soft-pack battery modules. It combines low density, UL94 V-0 flammability rating, and excellent flow characteristics to ensure complete filling and sealing of cell assemblies. With a 1:1 mix ratio by weight and Shore A 60±5 hardness, it offers light-weighting benefits and efficient heat dissipation while adhering to strict safety requirements. Fully RoHS/REACH-compliant, this product is suitable for global deployment and eco-conscious manufacturing.

Key Product Features

– Mass Reduction: Mixed density 1.09±0.03 g/cm³ lowers module weight, boosting energy density and extending EV/storage runtime.
– V-0 Fire Protection: UL94 V-0 rated, providing critical flame resistance for high-energy battery systems.
– High Fluidity: Viscosity 400–700 mPa·s enables thorough filling of narrow inter-cell gaps, preventing voids and ensuring thermal uniformity.
– Rapid Processing: Cures in 2.5–3.5 h at 25°C (or ≤40 min at 60°C), speeding production without sacrificing adhesion.
– Thermal Reliability: Stable from –40°C to 120°C, performing reliably in extreme cold and high-rate charge/discharge conditions.

Technical Parameters

Product Applications

1. Battery Cell Gap Filling: Fills narrow inter-cell gaps, boosting thermal conductivity and reducing hot spots during charge/discharge.
2. Module Structural Sealing: Seals modules against moisture and physical impact, ensuring EV/energy-storage durability.
3. Thermal Interface Material: Lightweight thermal bridge between cells and cooling plates, enhancing heat dissipation and battery life.
4. Safety Barrier: Flame-retardant interlayer that prevents thermal runaway spread between failed cells.
5. Portable Energy Storage: Encapsulates soft-pack cells in power banks/solar generators, providing light protection and fire safety.

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

1. Hardener: Typically 5KG/10KG/25KG/200KG metal or plastic drums.
2. Resin: Typically 25KG/200KG metal or plastic drums.