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Optimal Choice for Enhancing Quality and Efficiency in Power Battery Polyurethane Adhesives | Dalian Chuangge Molecular Sieve: Eliminates Bubbles, Strengthens Bonding
With the rapid iteration of new energy vehicles, structural bonding of power battery PACKs, vehicle body assembly and electronic control potting have raised stringent quality requirements for two-component polyurethane structural adhesives. Adhesive manufacturers are plagued by a persistent industry pain point: trace moisture contained in raw materials undergoes side reactions with isocyanates to generate carbon dioxide. This leaves numerous bubbles and pinholes in cured adhesive layers, which drastically weakens bonding strength and impairs the sealing protection of battery packs. Under humid-heat aging and vehicle vibration, delamination, water penetration and heat dissipation failure frequently occur, resulting in low finished product yields and hidden safety hazards.
To fundamentally eliminate foaming defects in polyurethane adhesives while improving the mechanical properties of adhesive layers and construction compatibility, Dalian Chuangge 3A Molecular Sieve Activated Powder serves as a core functional additive for two-component polyurethane structural adhesives used in power batteries. Fully compatible with full-range automotive processes including bonding, sealing, coating and potting, it delivers an all-in-one solution for moisture removal, bubble suppression, adhesion enhancement and mechanical reinforcement for new energy adhesive manufacturers.
I. Precise Moisture Capture & Bubble Elimination to Eradicate Cavities in Adhesive Layers
In two-component polyurethane systems, trace moisture carried by polyols, fillers and additives is the root cause of bubble formation. Conventional vacuum defoaming cannot completely remove deep-seated enclosed pores, leading to high rework costs.
Dalian Chuangge 3A Molecular Sieve Activated Powder is manufactured via high-temperature dynamic calcination, with pore sizes precisely matched to the diameter of water molecules. It features highly selective adsorption performance: it only traps free moisture and small-molecule acidic impurities within the system without adsorbing polyurethane base materials or interfering with crosslinking reactions of adhesives.
Upon incorporation, it rapidly reduces the water content of adhesive mixtures to an ultra-low level, blocking the gas-generating side reaction between moisture and -NCO groups. The cured adhesive layer forms a compact structure free of honeycomb voids and pinholes, significantly cutting reject rates. Compared with traditional desiccants, it boasts higher adsorption capacity and lasting moisture locking performance without secondary water release and foaming during storage. It fully meets IP67/IP68 high-standard sealing requirements for power batteries and eliminates safety risks such as cell short circuits and thermal runaway.
II. Enhanced Interfacial Adhesion & Long-Term Mechanical Strength of Structural Adhesives
Bubbles fracture the internal structure of adhesive layers and create stress concentration under force, making bonding interfaces prone to cracking and peeling after thermal cycling and prolonged bumpy driving. Dalian Chuangge 3A Molecular Sieve features uniform particle size and excellent dispersibility, achieving high compatibility with polyether polyols, polyester polyols and thermal conductive fillers. It distributes evenly throughout adhesives to form a stable reinforcing network with the following benefits:
Fills microscopic gaps inside adhesives to boost cohesive strength, markedly improving tensile shear and pull-off strength for reliable bonding of dissimilar vehicle materials and cell module fixation;
Improves interfacial wettability between adhesives and substrates including metals, plastics and aluminum shells, greatly reducing the attenuation of bonding strength after aging, and adapting to the wide service temperature range of -40℃ to 100℃ for new energy vehicles;
Compatible with formulations of thermal conductive structural adhesives and sealing potting adhesives for power batteries. Compact bubble-free adhesive layers maintain complete thermal conduction channels and avoid heat insulation caused by voids that impair battery heat dissipation.
III. Full Compatibility with Automotive Processes for Smooth Construction & Higher Production Efficiency
Specially optimized for automated glue pouring, automatic potting and high-speed coating production lines adopted by vehicle manufacturers, Chuangge 3A Molecular Sieve delivers outstanding processing performance:
Ultra-fine, low-dust powder with extremely low 325-mesh sieve residue, dispersing uniformly without agglomeration to prevent blockage of glue spray nozzles and potting machine outlets and reduce production downtime for equipment cleaning;
Moderately extends the pot life of two-component polyurethane mixtures, providing a longer operable window for mass potting of large-scale PACK assemblies and large-area vehicle body coating, minimizing defects such as incomplete filling and broken glue lines caused by premature local curing;
Flexible addition ratio: a small dosage delivers remarkable moisture removal and adhesion improvement without obvious changes to base viscosity and leveling performance of adhesives. Existing production lines and original formulations require minimal adjustments for seamless implementation.
Full Industry Application Coverage for New Energy Vehicles
✅ Power Battery PACK: Structural bonding of cell modules, battery pack housing sealing, BMS electronic control potting, thermal conductive polyurethane structural adhesives
✅ Complete Vehicle Body: Sheet metal bonding, plastic part sealing, waterproof coating for door and chassis, composite material lamination adhesives
✅ Component Encapsulation: Motor potting, wire harness sealing, waterproof protection for on-board electronic components
IV. Powerful Capabilities as a Manufacturer with Stable Supply for Premium Adhesive Producers
Dalian Chuangge Technology has long specialized in the R&D and production of molecular sieve activated materials. Leveraging local chemical research resources in Dalian, the company maintains in-depth industry-university-research cooperation with Dalian University of Technology and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. It operates fully enclosed automated production lines to guarantee consistent product batches.
Model SL-G2035 is a customized modified activated powder exclusively developed for two-component polyurethane adhesives. It contains low impurity levels and mild pH values, avoiding abnormal premature curing of polyurethane systems. The product has passed rigorous automotive adhesive tests including aging resistance, humid-heat resistance and insulation performance. It is purchased in bulk by many leading domestic new energy adhesive manufacturers, serving as a cost-effective domestic alternative to high-end imported molecular sieve activated powders that slashes raw material procurement costs.
Safety is the top priority for new energy vehicles, and the compactness and bonding reliability of polyurethane adhesives for power batteries constitute the primary line of defense for vehicle safety. By adopting Dalian Chuangge 3A Molecular Sieve, manufacturers fundamentally eliminate bubble defects at the formulation stage while reinforcing bonding performance and optimizing automated construction workflows, balancing product quality, production efficiency and overall comprehensive costs.
Whether for thermal conductive structural adhesives, PACK sealing adhesives for power batteries, or two-component polyurethane systems for vehicle body bonding and electronic potting, Dalian Chuangge Technology can provide customized additive solutions and technical formulation support, empowering adhesive manufacturers to develop high-performance polyurethane products that meet strict new energy vehicle industry standards.
Dalian Chuangge Technology Co., Ltd
Richard Han
Doris Zhou
Headquater: 9th Floor, Century Classic Building, No.10, Xinghai Square, Shahekou District, Dalian City, Liaoning Province
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