杜仲残渣（EUR）是杜仲胶提取过程剩余的废弃物，是一种廉价、可再生、环境友好的资源，以其炭化物为导电材料、聚二甲基硅氧烷（PDMS）为柔性基质，制备了廉价、对人体友好的复合柔性压阻式传感材料，并对材料结构以及压敏性进行了表征，测试了该压力传感材料从0到14 kPa的响应特性。结果表明，在0.3 kPa应力下具有高的灵敏度（142.1 kPa^-1），所制备的CEUR/PDMS材料对应力变化响应稳定并具有良好的耐久性；该复合传感材料对手持不同质量烧杯、手机振动以及书写信号具有良好的响应。该复合材料制备工艺简单、成本低、响应性能优异且对人体无害，在可穿戴和监测人体活动等领域具有广泛的应用前景。

With the development of flexible pressure sensors in the field of wearable and human-computer interaction,the requirements for flexible pressure sensors are getting higher and higher.While ensuring high sensitivity characteristics,they also need to be bio-friendly and low-cost.The preparation methods of sensing materials based on biomass waste and high-elasticity polydimethylsiloxane (PDMS) materials are discussed,and their sensing properties are studied.Eucommia ulmoides residue (EUR) is a kind of waste from the extraction process of eucommia ulmoides gum.It is a cheap,renewable,and environmentally friendly resource.By using carbonized EUR as a conductive material and PDMS as a flexible substrate,a cheap and human-friendly composite flexible piezoresistive sensing material is prepared via a simple method,and its structure and pressure sensitivity are characterized by electrochemical workstation and other instruments.Results show that this pressure sensing material (CEUR/PDMS) has a working range of 0 to 14 kPa and has a high sensitivity of 142.1 kPa^-1 under 0.3 kPa stress.The prepared CEUR/PDMS material has a stable response to stress changes and has a good durability.Application tests show that it has a good response to holding water cups of different weights,phone vibration and writing signals.CEUR/PDMS material can be prepared by a simple process,has a low cost and excellent response performance and is harmless to human body,which is expected to have good application prospects in the fields of wearable and monitoring human activities.

秦磊(1993-),男,硕士研究生,研究方向为生物质资源化,qinlei0905@163.com