• 专利标题:   Jute fiber composition for multilayer ballistic shields for protecting against firing of rifle, comprises jute fiber and functionalized polyester resin obtained by dissolving dried graphene oxide in isopropyl alcohol, ultrasonically processing, and mixing graphene oxide solution with polyester resin.
  • 专利号:   BR102020025980-A2
  • 发明人:   NEVES MONTEIRO S, PEREIRA A C, ANACLETO PINHEIRO W
  • 专利权人:   INST MILITAR ENGENHARIA
  • 国际专利分类:   B29C070/00, B82Y030/00, C08G063/00
  • 专利详细信息:   BR102020025980-A2 28 Jun 2022 C08G-063/00 202303 Pages: 10
  • 申请详细信息:   BR102020025980-A2 BR10025980 18 Dec 2020
  • 优先权号:   BR10025980

▎ 摘  要

NOVELTY - A jute fiber composition comprises jute fiber and functionalized polyester resin obtained by drying 50 ml graphene oxide at 4.02 mg/ml in a vacuum chamber, dissolving the dried graphene oxide in 100 ml isopropyl alcohol, ultrasonically processing for 1 hour until it reaches a colloidal suspension, and mixing the obtained solution with the polyester resin under mechanical stirring for 10 minutes. USE - Composition used for multilayer ballistic shields for protecting against firing of rifle with ammunition of high impact power (all claimed) to improve defense and security in civil and military applications. ADVANTAGE - The composition improves dissipation of the impact energy of the projectile while maintaining its integrity, and provides composite which is easily processed, lightweight and having excellent mechanical and specific properties at low cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of the composition, which involves preparing the jute fibers for functionalization with graphene oxide, functionalizing jute fibers, preparing 30 vol.% jute fibers based on the composite, functionalizing the polyester resin to produce the composite, pouring the functionalized polyester/graphene oxide resin into the metallic matrix until the bottom is completely wet, gradually adding the jute fibers functionalized with graphene oxide together with the polyester/graphene oxide resin, ensuring all the fibers are wet by the resin, pressing the mixture at room temperature using a hydraulic press with 5 tons force for 24 hours, demolding the composite plate, and assembling the multilayer ballistic shield.