• 专利标题:   Core-shell structure shielding material comprises core layer including polyvinyl alcohol and multi-walled carbon nanotubes or graphene oxide, and shell layer including polyacrylonitrile and tungsten, tungsten(VI) oxide, bismuth(III) oxide or gadolinium(III) oxide.
  • 专利号:   CN115305598-A, CN115305598-B
  • 发明人:   YU C, YANG J, WU Y, SONG P, LI S, HE Z, GAO X
  • 专利权人:   CHINA NUCLEAR POWER DESIGN INST
  • 国际专利分类:   D01D005/00, D01D005/34, D01F001/09, D01F001/10, D01F008/08, D01F008/10, H05K009/00
  • 专利详细信息:   CN115305598-A 08 Nov 2022 D01F-008/10 202306 Chinese
  • 申请详细信息:   CN115305598-A CN11017241 23 Aug 2022
  • 优先权号:   CN11017241

▎ 摘  要

NOVELTY - Core-shell structure shielding material comprises core layer and shell layer coaxially arranged outside the core layer, where the core layer utilizes polyvinyl alcohol as matrix, and carbon-based fillers as electromagnetic shielding functional fillers, the shell layer utilizes polyacrylonitrile as matrix and heavy metals as ionization shielding functional fillers, the core-shell structure shielding material is prepared by electrospinning by coaxial spinning, the heavy metal is tungsten, tungsten(VI) oxide, bismuth(III) oxide or gadolinium(III) oxide, and the carbon-based filler is multiwalled carbon nanotubes or graphene oxide. USE - Used as core-shell structure shielding material. ADVANTAGE - The core-shell structure shielding material: is made by coaxial spinning technology, which makes the internal fiber distribution of the shielding material uniform, and avoids the decrease of the screen performance caused by the uneven distribution of the internal fiber of the shielding material, and thus it has relatively high electromagnetic shielding function and ionization shielding function. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of core-shell structure shielding material. The method utilizes N,N-dimethylformamide solution to prepare shell spinning solution.