材料科学
封装(网络)
电子设备和系统的热管理
消散
焓
热的
复合材料
纳米技术
机械工程
热力学
计算机网络
物理
计算机科学
工程类
作者
Can Cao,Shaobo Ji,Ying Jiang,Jimmy Su,Huarong Xia,Haicheng Li,Changhao Tian,Yi Chun Wong,Xue Feng,Xiaodong Chen
标识
DOI:10.1002/adma.202401875
摘要
The practical application of flexible and stretchable electronics is significantly influenced by their thermal and chemical stability. Elastomer substrates and encapsulation, due to their soft polymer chains and high surface-area-to-volume ratio, are particularly susceptible to high temperatures and flame. Excessive heat poses a severe threat of damage and decomposition to these elastomers. By leveraging water as a high enthalpy dissipating agent, here, a hydrogel encapsulation strategy is proposed to enhance the flame retardancy and thermal stability of stretchable electronics. The hydrogel-based encapsulation provides thermal protection against flames for more than 10 s through the evaporation of water. Further, the stretchability and functions automatically recover by absorbing air moisture. The incorporation of hydrogel encapsulation enables stretchable electronics to maintain their functions and perform complex tasks, such as fire saving in soft robotics and integrated electronics sensing. With high enthalpy heat dissipation, encapsulated soft electronic devices are effectively shielded and retain their full functionality. This strategy offers a universal method for flame retardant encapsulation of stretchable electronic devices.
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