Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to the field of graphene dielectric constant regulation and control. The impedance matching is adjusted by adding lithium-aluminum-silicon (LAS) nanoparticles to change the complex dielectric constant of graphene (RGO), lithium-aluminum-silicon sol is prepared by adopting a sol-gel method, a silane coupling agent is added to change the conductivity of the lithium-aluminum-silicon (LAS) sol, and the interface bonding of the lithium-aluminum-silicon (LAS) nanoparticles and the reduced graphene oxide nanosheets is enhanced. The graphene (RGO) and the lithium-aluminum-silicon(LAS) are compounded in a nano-scale through a sol-gel method and a solvothermal method to prepare the LAS/RGO nano composite material, so that the dielectric constant of the graphene (RGO) is reduced, and the RGO/LAS composite material has excellent wave-absorbing performance. By adopting the graphene dielectric constant regulation and control method, the RGO/LAS composite material with excellent microwave absorption properties such as low density, wide frequency band, strong absorption and the like can be obtained.
本发明涉及石墨烯介电常数调控领域，具体是通过加入锂铝硅（LAS）纳米粒子以改变石墨烯（RGO）的复介电常数来调节阻抗匹配，采用溶胶凝胶法制备锂铝硅溶胶，并加入硅烷偶联剂改变了锂铝硅（LAS）溶胶的电导率，增强锂铝硅（LAS）纳米颗粒与还原氧化石墨烯纳米片的界面结合，通过溶胶凝胶法和溶剂热法使石墨烯（RGO）与锂铝硅（LAS）达到纳米尺度的复合，制备LAS/RGO纳米复合材料，降低了石墨烯（RGO）的介电常数，使RGO/LAS复合材料具备优异的吸波性能。采用本发明所用的石墨烯介电常数调控方法，可以得到具有低密度、宽频带、强吸收等优良微波吸收性能的RGO/LAS复合材料。
The invention relates to the field of graphene dielectric constant regulation and control. The impedance matching is adjusted by adding lithium-aluminum-silicon (LAS) nanoparticles to change the complex dielectric constant of graphene (RGO), lithium-aluminum-silicon sol is prepared by adopting a sol-gel method, a silane coupling agent is added to change the conductivity of the lithium-aluminum-silicon (LAS) sol, and the interface bonding of the lithium-aluminum-silicon (LAS) nanoparticles and the reduced graphene oxide nanosheets is enhanced. The graphene (RGO) and the lithium-aluminum-silicon(LAS) are compounded in a nano-scale through a sol-gel method and a solvothermal method to prepare the LAS/RGO nano composite material, so that the dielectric constant of the graphene (RGO) is reduced, and the RGO/LAS composite material has excellent wave-absorbing performance. By adopting the graphene dielectric constant regulation and control method, the RGO/LAS composite material with excellent microwave absorption properties such as low density, wide frequency band, strong absorption and the like can be obtained.
本发明涉及石墨烯介电常数调控领域，具体是通过加入锂铝硅（LAS）纳米粒子以改变石墨烯（RGO）的复介电常数来调节阻抗匹配，采用溶胶凝胶法制备锂铝硅溶胶，并加入硅烷偶联剂改变了锂铝硅（LAS）溶胶的电导率，增强锂铝硅（LAS）纳米颗粒与还原氧化石墨烯纳米片的界面结合，通过溶胶凝胶法和溶剂热法使石墨烯（RGO）与锂铝硅（LAS）达到纳米尺度的复合，制备LAS/RGO纳米复合材料，降低了石墨烯（RGO）的介电常数，使RGO/LAS复合材料具备优异的吸波性能。采用本发明所用的石墨烯介电常数调控方法，可以得到具有低密度、宽频带、强吸收等优良微波吸收性能的RGO/LAS复合材料。
Graphene dielectric constant regulation method
一种石墨烯介电常数调控方法
16.03.2021
Patent
Elektronische Ressource
Chinesisch
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