• 专利标题:   Preparation of graphene/ferrite-based passive frequency-controlled material by mixing e.g. functional modified graphene and nickel-zinc ferrite, ball milling, cooling, filtering, vacuum-drying, mixing e.g. fluorine rubber and vulcanizing.
  • 专利号:   CN108298973-A
  • 发明人:   YANG Z, SUN X, ZHANG J, CHAO Z, YU H
  • 专利权人:   BEIJING ENVIRONMENTAL FEATURES INST
  • 国际专利分类:   C04B035/30
  • 专利详细信息:   CN108298973-A 20 Jul 2018 C04B-035/30 201862 Pages: 13 Chinese
  • 申请详细信息:   CN108298973-A CN10170649 01 Mar 2018
  • 优先权号:   CN10170649

▎ 摘  要

NOVELTY - Preparation of graphene/ferrite-based passive frequency-controlled material comprises preparing graphene solution by redox process; preparing hexagonal nickel-zinc ferrite using chemical coprecipitation method; mixing graphene solution, gamma -glycidyloxypropyltrimethoxysilane and organic solvent, ultrasonic dispersing, vacuum-drying to obtain graphene functionalized modification; mixing graphene functionalized modification, nickel-zinc ferrite and ball milling auxiliary agent, stirring, ball milling, cooling, filtering to obtain precipitate and vacuum-drying to obtain powder; and mixing powder, fluorine rubber and auxiliary agent to obtain mixed rubber and vulcanizing to obtain material. USE - Method for preparing graphene/ferrite-based passive frequency-controlled material. ADVANTAGE - The material transmits electromagnetic waves in working frequency band of radar antenna, absorbs electromagnetic waves in frequency band needing stealth, realizes stealth of missile or fighter seeker or communication window and has important military value and strategic significance.