• 专利标题:   Medical flexible electromagnetic shielding film useful in medical darkrooms and/or cables, comprises copolyester substrate and electromagnetic shielding material uniformly dispersed in copolyester substrate, where copolyester substrate is obtained by polymerizing co-monomer.
  • 专利号:   CN113248883-A, CN113248883-B
  • 发明人:   YANG J, WANG X, MA Z, YI M, YUAN Q, SUN Y
  • 专利权人:   UNIV SHANDONG
  • 国际专利分类:   C08J005/18, C08K003/04, C08K003/22, C08K009/04, C08K009/06, C08L067/02, H05K009/00
  • 专利详细信息:   CN113248883-A 13 Aug 2021 C08L-067/02 202179 Pages: 11 Chinese
  • 申请详细信息:   CN113248883-A CN10626800 04 Jun 2021
  • 优先权号:   CN10626800

▎ 摘  要

NOVELTY - Medical flexible electromagnetic shielding film comprises copolyester substrate and electromagnetic shielding material uniformly dispersed in copolyester substrate, where the melting point of copolyester substrate is 200-230 degrees C, the intrinsic viscosity is 0.70-0.90 dl/g, the copolyester substrate is obtained by polymerizing co-monomer, and the co-monomer comprises 65-89 pts. wt. bis(2-hydroxyethyl) terephthalate monomer, 5-10 pts. wt. 2,2-dimethyl-1,3-propanediol, 1-10 pts. wt. 1,4-cyclohexanedimethanol and 5-15 pts. wt. 1,4-butanediol. USE - Medical flexible electromagnetic shielding film useful in medical darkrooms and/or cables (claimed). ADVANTAGE - The flexible electromagnetic shielding film is conveniently compounded on outside of medical darkrooms or cables, and solves the problem of seam pores of electromagnetic shielding plates. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the medical flexible electromagnetic shielding film, involving sequentially performing esterification reaction and polycondensation reaction on co-monomer to obtain copolyester substrate, performing organic process on electromagnetic shielding material, melting and plasticizing copolyester substrate and organic-treated electromagnetic shielding material, performing extrusion molding to obtain cast sheet, stretching cast sheet, and shaping to form flexible electromagnetic shielding film.