• 专利标题:   Composite electromagnetic shielding material comprises polymer, alloy powder, polyaniline, graphene, organic solvent and adhesive, where polymer is polyethylene, polypropylene, polystyrene or polyamide.
  • 专利号:   CN111002674-A
  • 发明人:   SHAN Z, LIU L, ZHU H
  • 专利权人:   HENGDIAN GROUP DMEGC MAGNETIC LTD CO
  • 国际专利分类:   B29C043/24, B32B015/00, B32B015/085, B32B027/18, B32B027/32, B32B037/06, B32B037/10, C08J005/18, C08K003/04, C08L079/02
  • 专利详细信息:   CN111002674-A 14 Apr 2020 B32B-027/32 202038 Pages: 7 Chinese
  • 申请详细信息:   CN111002674-A CN11315487 19 Dec 2019
  • 优先权号:   CN11315487

▎ 摘  要

NOVELTY - Composite electromagnetic shielding material comprises a polymer, alloy powder, polyaniline, graphene, organic solvent and adhesive. The polymer is polyethylene, polypropylene, polystyrene or polyamide. USE - As composite electromagnetic shielding material. ADVANTAGE - The shielding material has excellent electromagnetic shielding performance on wide-band electromagnetic waves, light-weight and excellent mechanical properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the shielding material involving (i) stirring and uniformly dispersing polyaniline and graphene in the organic solvent to obtain a mixed solution and drying the mixed solution at 60-85 degrees C to obtain mixed powder, (ii) blending the polymer with the mixed powder in an internal mixer at a mass ratio of (2-7):1 and mixing and calendering the obtained blended mixture to obtain a polymer film, (iii) dispersing 50-100 pts. wt. alloy powder in 25-100 pts. wt. organic solvent, adding 5-15 pts. wt. adhesive, uniformly stirring to obtain solution and obtaining an alloy powder film by a casting molding process and (iv) laminating the polymer film and the alloy powder film and rolling to obtain the shielding material.