Chang Ran, Hao Peng, Qu Hongqiang, Xu Jianzhong, Ma Jing
The Flame Retardant Material and Processing Technology Engineering Research Center of Hebei Province, College of Chemistry and Materials Science, Hebei University, Baoding 071002, China.
Hebei Provincial Center for Optical Sensing Innovations, College of Physics Science & Technology, Hebei University, Baoding 071002, China.
J Colloid Interface Sci. 2024 Jan 15;654(Pt A):437-445. doi: 10.1016/j.jcis.2023.10.061. Epub 2023 Oct 14.
Flexible films with thermal management capability and efficient electromagnetic interference (EMI) shielding performance are highly needed for electronic devices. Moreover, it remains difficult to integrate fire safety performance into the multifunctional film. Thus, a facile multi-interfacial engineering strategy was proposed to prepare a fire resistant MXene-based flexible film with excellent Joule heating and EMI Shielding performance. Specifically, the neighboring and interlayer MXene sheets were respectively bridged by graphene oxide and carbon nanotube via multiple physical and chemical interactions, thus formed a optimized hierarchical microstructure. The resultant film possessesd outstanding Joule heating performance including wide electrical-to-thermal temperature and sensitive conversion ability. Simultaneously, the film exhibited high EMI shielding efficiency (99.97%). Most significantly, after being burned up to 60 min, the film still maintained its flexibility and multifunctional perfprmance benefiting from a large expanded protective layer. The excellent fire resistance and multi-functions endowed the film wide application prospects in advanced electronics.
电子设备迫切需要具有热管理能力和高效电磁干扰（EMI）屏蔽性能的柔性薄膜。此外，将防火安全性能集成到多功能薄膜中仍然很困难。因此，提出了一种简便的多界面工程策略来制备具有优异焦耳热和EMI屏蔽性能的阻燃MXene基柔性薄膜。具体而言，相邻和层间的MXene片分别通过氧化石墨烯和碳纳米管通过多种物理和化学相互作用桥接，从而形成了优化的分级微观结构。所得薄膜具有出色的焦耳热性能，包括宽的电-热温度范围和灵敏的转换能力。同时，该薄膜表现出高EMI屏蔽效率（99.97%）。最显著的是，在燃烧60分钟后，由于形成了大的膨胀保护层，该薄膜仍保持其柔韧性和多功能性能。优异的耐火性和多功能性赋予了该薄膜在先进电子领域广阔的应用前景。
