• 专利标题:   Preparing monodisperse manganese oxide/reduced graphene oxide composite material for electromagnetic wave absorption, comprises adding normal hexane to liquid after reaction, ultrasonically dispersing, and using ethanol to centrifuge and wash.
  • 专利号:   CN114684857-A
  • 发明人:   LIU J, WANG S, PAN K
  • 专利权人:   UNIV HEILONGJIANG
  • 国际专利分类:   B82Y030/00, B82Y040/00, C01B032/194, C01G045/02, H05K009/00
  • 专利详细信息:   CN114684857-A 01 Jul 2022 C01G-045/02 202278 Chinese
  • 申请详细信息:   CN114684857-A CN11606594 30 Dec 2020
  • 优先权号:   CN11606594

▎ 摘  要

NOVELTY - Preparing monodisperse manganese oxide/reduced graphene oxide composite material, comprises (1) taking pre-processed reduced graphene oxide and manganese oleate precursors in 100 ml three-necked flask, and adding octadecene, oleylamine and oleic acid; (2) introducing nitrogen before the reaction, raising the temperature to 120℃ for 1 hour, alternately vacuumizing and introducing nitrogen gas for multiple times, and vigorously magnetic stirring to remove water, oxygen and other low-boiling point in reactant; (3) raising the temperature of the system temperature to target temperature; and (4) adding normal hexane to the liquid after the reaction, ultrasonically dispersing, transferring to centrifugal tube, using ethanol to centrifuge and wash, repeating ultrasonication and centrifugation for multiple times, washing surfactant and other impurities, and drying at low temperature in constant temperature blast drying oven for absorption test of electromagnetic waves. USE - The method is useful for preparing monodisperse manganese oxide/reduced graphene oxide composite material for electromagnetic wave absorption. ADVANTAGE - The material has excellent electromagnetic wave absorption performance, provides more interface polarization active site, and enhances the interface polarization effect. The method is simple and cost-effective.