【摘要】 氢能是一种具有巨大应用潜力的未来新能源。鉴于氢易燃易爆的特性，在其储存、运输和使用过程中，需要密切关注氢泄漏的发生和防范。针对氢气泄漏检测的迫切需求，采用溶胶-凝胶法混合硅橡胶制备WO₃/Pd柔性氢致变色胶带。分析不同W/Pd比例与硅胶厚度对柔性氢致变色胶带变色性能的影响。研究发现，W/Pd质量比为100∶1时，胶带的变色效果最佳；硅胶厚度为0.75 mm时，胶带完全变色后的色差值达峰值26.56,变色效果最佳；在变色响应速度方面，胶带厚度为0.5 mm时，其色差值达到5仅需50 s,响应最为迅速；同时，柔性氢致变色胶带具有良好的气体选择性以及550%以上的断裂伸长率。本研究为氢致变色膜在不同应用场景下的优化设计提供了关键参考，能够实现泄漏点定位，助力其在氢能安全监测、氢气管道运输等领域更好地发挥作用。更多还原

【Abstract】 Hydrogen energy is a promising future new energy source with enormous application potential. However, due to its flammable and explosive nature, the use, storage and transportation of hydrogen require careful monitoring and prevention of leakage. To address the urgent needs of hydrogen leakage detection, this study employed a sol-gel method combined with silicone rubber to fabricate a flexible WO₃/Pd hydrogen-sensitive color-changing adhesive tape. The effects of different W/Pd ratios and silicone thicknesses on the chromatic performance of the tape were systematically investigated. The results show that the optimal chromatic effect is achieved at a W/Pd mass ratio of 100∶1. A maximum color difference value of 26.56 is observed at a silicone thickness of 0.75 mm after complete coloration, indicating the best visual contrast. In terms of response speed, a color difference value of 5 is reached within 50 s at a thickness of 0.5 mm, demonstrating the fastest response among the tested samples. Additionally, the flexible hydrogen-sensitive color-changing adhesive tape exhibits excellent gas selectivity and an elongation at break of over 550%. This study provides key insights for the optimal design of hydrogen-sensitive color-changing films in various application scenarios, enabling precise leakage localization and promoting safer monitoring in hydrogen energy and pipeline transportation.更多还原