High-Temperature-Tolerant Artificial Muscles Using Poly(p-phenylene benzobisoxazole) Composite Yarns
High-Temperature-Tolerant Artificial Muscles Using Poly(p-phenylene benzobisoxazole) Composite Yarns
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DOI：
10.1007/s42765-022-00183-2
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发表时间：
2022-07-04
影响因子：
16.1
通讯作者：
Li, Qingwen
中科院分区：
文献类型：
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作者：
He, Jianfeng;Ren, Ming;Li, Qingwen
目前，已开发的纱线肌肉或驱动器仍不能满足在高温环境下工作的要求。航空航天和工业防护应用中对热电阻率的要求很高。本文采用碳纳米管(CNT)包裹聚对苯撑苯并双恶唑(PBO)复合纱线制备了一种耐高温人工肌肉。利用热扭转方法将刚性的PbO分子链重新定位为均匀的扭曲稳定的卷曲结构。CNT/PBO复合纱线肌肉在5.4 Mpa的拉伸下产生18.9%的可逆收缩行程，输出1.3kJ kg(-1)的能量密度。与以前通常在室温下工作的致动器不同，CNT/PBO复合纱线肌肉可以在高达300摄氏度的环境温度下工作，具有高收缩行程和长期稳定性。展示了由耐高温纱线肌肉驱动的仿生尺寸虫机器人、可展开结构和智能纺织品，展示了作为高温环境应用的软执行器的前景。
Today the developed yarn muscles or actuators still cannot satisfy the requirements of working in high-temperature environments. Thermal resistivity is highly needed in aerospace and industrial protection applications. Herein, an artificial muscle with high-temperature tolerance is prepared using carbon nanotube (CNT) wrapped poly (p-phenylene benzobisoxazole) (PBO) composite yarns. A thermal twisting method was utilized to reorientate the stiff PBO molecular chains into a uniform and twist-stable coiled structure. The CNT/PBO composite yarn muscle generates reversible contractile strokes up to 18.9% under 5.4 MPa tension and outputs 1.3 kJ kg(-1) energy density. In contrast to previous actuators, which are normally operated at room temperatures, the CNT/PBO composite yarn muscles can work at ambient temperatures up to 300 degrees C with high contractile stroke and long-term stability. A bionic inchworm robot, a deployable structure, and smart textiles driven by the high-temperature-tolerant yarn muscles were demonstrated, showing the promise as a soft actuator towards high-temperature environment applications.