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《工程塑料应用》 2021年第10期
DOI:10.3969/j.issn.1001-3539.2021.10.005
PUF/碳基气凝胶复合材料的压阻性能
翟天亮12,李江浩1,王兴义1,柴磊1,张春梅1
1.贵阳学院化学与材料工程学院,贵阳 550005; 2.贵州师范学院化学与材料学院,贵阳 550018 
Their Piezoresistive Properties of Bi-directionally Orientated PUF/CA Composite
Zhai Tianliang12, Li Jianghao1, Wang Xingyi1, Chai Lei1, Zhang Chunmei1
1. College of Chemistry and Materials Engineering, Guiyang University, Guiyang 550005, China; 2. School of Chemistry and Materials Science, Guizhou Education University, Guiyang 550018, China 
摘要:碳基气凝胶(CA)具有优异的电学性能,但较差的回弹性阻碍了其在压阻传感器领域的应用。将碳纳米管(CNT)/氧化石墨烯(GO)/壳聚糖(CS)的复合分散液在真空条件下填充至聚氨酯开孔泡沫(PUF)中,采用原位双向冷冻干燥法制备了PUF/CA导电复合材料。利用扫描电子显微镜(SEM)表征了复合材料的微观结构,研究了取向结构对PUF/CA复合材料电导率、压缩性能和压阻性能的影响。结果表明,PUF/CA复合材料具有显著的各向异性。在取向方向上的电导率高达12.38 S/m,为垂直于取向方向的2.1倍。复合材料具有优异的回弹性能,经过10次压缩循环后的压缩强度没有明显降低。PUF/CA复合材料展示出了稳定的压阻循环性能,有望拓展气凝胶在智能传感器领域的应用。 
Abstract:Carbon-based aerogel (CA) possesses excellent electrical properties, but its poor resilience restricts its application in the field of piezoresistive sensors. The blend dispersion of carbon nanotube (CNT)/graphene oxide (GO)/chitosan (CS) was filled into polyurethane open cell foam under vacuum, and the conductive polyurethane foam(PUF)/CA composite was prepared by the in-situ bidirectional freeze-drying method. The microstructure of the composite was characterized by scanning electron microscope (SEM), and the influence of the orientation structure on the electrical conductivity, compression performance and piezoresistive properties of PUF/CA composite were studied. The results show that PUF/CA composites exhibit significant anisotropy. The electrical conductivity in the orientation direction is as high as 12.38 S/m, which is 2.1 times perpendicular to that of the orientation direction. The composite shows excellent resilience performance, and the compressive strength is not significantly reduced after 10 compression cycles. The PUF/CA composite exhibits stable piezoresistive cycling performance, which is expected to expand the application of aerogels in the field of smart sensors. 
关键词:碳基气凝胶;聚氨酯泡沫;压阻性能;应变传感器 
Keywords:carbon-based aerogel; polyurethane foam; piezoresistive property; strain sensor 
基金:贵阳市科技局贵阳学院专项资金项目【GYU-KY-〔2021〕】,贵阳市科技计划项目【筑科合同〔2020〕37-3】,贵州省科技计划项目【黔科合基 础[2019]1188 号】 
本文引用格式:
翟天亮,李江浩,王兴义,等. PUF/碳基气凝胶复合材料的压阻性能[J].工程塑料应用,2021,49(10):24-28.
Zhai Tianliang,Li Jianghao,Wang Xingyi,et al. Their piezoresistive properties of bi-directionally orientated PUF/CA composite[J]. Engineering Plastics Application,2021,49(10 ):24-28. 

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