三维多孔导电泡沫材料是制备柔性压力传感器的理想材料,采用成本低廉的木质素和氧化还原石墨烯与六亚甲基二异氰酸酯混合一步发泡法制备了导电的木质素基聚氨酯泡沫。该泡沫在电路中可以使得小灯泡发亮,在压缩形变达到90%后不改变其形状,可以检测到0.5Hz、0.2Hz、1Hz和2Hz的外界不同物理频率刺激,穿戴在人体上可以进行人体运动监测。这种成本低廉、制备方法简单的木质素基聚氨酯泡沫在医疗健康领域和可穿戴电子器件领域有着巨大的应用前景。
Three-dimensional porous conductive foam materials are ideal for the preparation of flexible pressure sensors.Using low-cost lignin and redox graphene mixed with hexamethylene diisocyanate to prepare a conductive lignin-based polyurethane foam by one-step foaming method.The foam could make a small light bulb glow in the circuit,and its shape did not change after 90% compression deformation.It could detect the different physical frequency stimuli of 0.5Hz,0.2Hz,1Hz,and 2Hz,and could be worn on the human body for human motion monitoring.This lignin-based polyurethane foam,which is low-cost and simple-to-prepare,has great promise for applications in the fields of medical health and wearable electronic devices.
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基金资助
国家重点研发计划项目(2017YFE0102300);国家自然科学基金(51503218);宁波市重点研发计划项目(2022Z139)
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