UV-Curable Polymer-Dispersed Extinguishing Agents for Scalable Flame Retardancy in High-Risk Environments
- 희경 권
- 4일 전
- 1분 분량
최종 수정일: 3일 전
Abstract
The safety of lithium-ion batteries remains a critical concern owing to the risk of thermal runaway, which can lead to severe fires and explosions. This study introduces a novel polymer-dispersed extinguishing agent (PDEA) layer, fabricated via a single-step ultraviolet (UV)-induced phase separation process, eliminating the need for high-temperature manufacturing techniques. Spontaneously formed droplets of a fire-extinguishing agent (EA) within a UV-curable epoxy matrix are embedded in the PDEA layer, resulting in its exceptional flame retardant performance. Comprehensive analyses reveal a strong correlation between the EA content and material properties, including optical, thermal, mechanical, and flame retardant behaviors. The sample containing 30 wt% EA exhibits optimal performance, delaying the back-surface temperature increase to 100 °C by 150 s and reducing the maximum back-surface temperature by over 60 °C compared to pure epoxy. The droplet-bursting mechanism of the EA effectively suppresses flame propagation and prevents temperature increase during fire exposure. This innovative approach offers significant advantages over conventional flame retardant materials by combining enhanced efficacy, process simplicity, and cost-effectiveness. These findings highlight the potential of PDEA layers for application in flame-resistant components, particularly in battery housing and other high-risk environments.
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