• 专利标题:   Nanometer wire wave-absorbing material with multi-layer alternating graphene/wave-transmitting ceramic structure for electromagnetic wave absorption field of electronic equipment, has micro-structure that presents high temperature resistant ceramic nano-wire of nano-wire with amorphous feature.
  • 专利号:   CN114685189-A
  • 发明人:   ZHANG L, CAO Y, LIANG J, SONG Q, YE F
  • 专利权人:   UNIV NORTHWESTERN POLYTECHNICAL
  • 国际专利分类:   C04B041/89, H05K009/00
  • 专利详细信息:   CN114685189-A 01 Jul 2022 C04B-041/89 202290 Chinese
  • 申请详细信息:   CN114685189-A CN10341523 29 Mar 2022
  • 优先权号:   CN10341523

▎ 摘  要

NOVELTY - The wave-absorbing material has a wave-absorbing material main portion that realizes the composite of the high conductive phase graphene the near-insulating wave-transmitting ceramic under the nano-scale, forms the nano-level heterogeneous interface, and realizes the interface polarization loss under the alternating electric field. The absorption bandwidth reaches the wave-transparent nano-wire is the silicon nitride nano-wire with the length-diameter ratio of 103 ~ 104. The micro-structure presents single crystal characteristic, and the length-diameter ratio is 102 ~ 103. The micro-structure exhibits the BN nano-wire or long diameter ratio of the polycrystalline feature is 102 ~ 103. The micro-structure presents the high temperature resistant ceramic nano-wire of silicon dioxide nano-wire with amorphous feature. USE - Nanometer wire wave-absorbing material with multi-layer alternating graphene/wave-transmitting ceramic structure for electromagnetic wave absorption field of electronic equipment. ADVANTAGE - The nano-wire wave-absorbing material with multi-layer alternating graphene/wave-transmitting ceramic structure is simple in technique, simple in structure, and capable of realizing mass production.The nano-wire wave-absorbing material with multi-layer alternating graphene/wave-transmitting ceramic structure achieves excellent room temperature absorbing performance, effective absorption bandwidth reaches 8 GHz, and has good high temperature resistance and oxidation resistance, suitable for electromagnetic wave absorption field. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of nano-wire wave-absorbing material with multi-layer alternating graphene/wave-transmitting ceramic structure. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart illustrating the preparation method of nano-wire wave-absorbing material with multi-layer alternating graphene/wave-transmitting ceramic structure. (Drawing includes non-English language text)