复合材料科学与工程Issue(3)：145-154,10.DOI:10.19936/j.cnki.2096-8000.20260328.017
基于石墨烯/聚合物自组装悬浮膜气压传感器的制备与性能探究
Preparation and performance study of graphene/polymer self-assembled suspended membrane-based air pressure sensors
摘要
Abstract
This paper presents the design and fabrication of a pressure sensor based on reduced graphene oxide suspended film(rGO-SF).The rGO-SF was formed through in-situ growth on pre-etched SiO2 cavities,where self-assembled graphene oxide(GO)films spontaneously separated from solution.Compared with conventional graphene-based pressure sensor fabrication processes,the rGO-SF sensor eliminates membrane transfer steps,significantly simplifying the manufacturing workflow and providing advantages for large-scale production.By introducing modified polymethyl methacrylate(M-PMMA)into the rGO interlayers,the oxygen transmission rate(OTR)of the M-PMMA/rGO composite film was reduced by 49.6%(at 20.0wt%M-PMMA loading),markedly enhancing the stability and reliability of the rGO-SF pressure sensor.Experimental results demonstrate that pressure differences between internal and external environments induce measurable resistance changes in rGO-SF.Leveraging this principle,pre-cise pressure measurement can be achieved by monitoring resistance variations.Testing shows the sensor effectively detects pressure changes in the 0 kPa to 100 kPa range,with excellent linearity(S2 ＝0.99)and sensitivity(1.298×10-3 kPa-1)particularly in the 30 kPa to 100 kPa differential pressure regime.关键词
气压传感器/还原氧化石墨烯/悬浮膜/自组装/复合材料Key words
pressure sensors/reduced graphene oxide/suspended films/self-assembly/composites分类
通用工业技术引用本文复制引用
王垚,梅启林,丁国民,申正鹏,高琳沁,王鸿..基于石墨烯/聚合物自组装悬浮膜气压传感器的制备与性能探究[J].复合材料科学与工程,2026,(3):145-154,10.基金项目
湖北省自然科学基金一般面上项目(2022CFB384) （2022CFB384）
国家自然科学基金(52003120) （52003120）
