• 专利标题:   Preparing pressure sensor, by adding graphene to cellulose-lithium bromide solution, adding additive, dripping graphene-cellulose-lithium bromide solution into coagulation bath, coagulating and pouring polymer substrate into substrate mold.
  • 专利号:   CN111928979-A
  • 发明人:   LIU L, WANG F, LI Z, YAO J
  • 专利权人:   UNIV ZHEJIANG SCITECH
  • 国际专利分类:   C01B032/19, G01L001/16
  • 专利详细信息:   CN111928979-A 13 Nov 2020 G01L-001/16 202000 Pages: 10 Chinese
  • 申请详细信息:   CN111928979-A CN10713247 22 Jul 2020
  • 优先权号:   CN10713247

▎ 摘  要

NOVELTY - Method for preparing pressure sensor, involves (a) dissolving cellulose in lithium bromide solution, stirring at 60-150 degrees C to obtain a cellulose-lithium bromide solution, adding graphene to the cellulose-lithium bromide solution, ultrasonically treating in an ultrasonic two-dimensional material stripper, adding additive and stirring to obtain a graphene-cellulose-lithium bromide solution, (b) using a peristaltic pump, dripping the graphene-cellulose-lithium bromide solution into a coagulation bath and coagulating to obtain cellulose microspheres, and (c) pouring a polymer substrate into a substrate mold, uniformly and densely spreading the cellulose microspheres on the polymer substrate and curing the substrate to obtain the product. USE - The method is useful for preparing pressure sensor. ADVANTAGE - The pressure sensor has high sensitivity and hair follicle-like structure, produces huge resistance changes, keenly perceives external changes, exhibits synergistic effect of graphene and lithium, and improves sensor conductivity.