• 专利标题:   Composite material used for manufacturing ceramic material, multilayer armor, personal vest, military vehicle, or layer of multilayer ballistic system, comprises natural fiber-reinforced thermoset polymer.
  • 专利号:   BR102020025005-A2
  • 发明人:   NEVES MONTEIRO S
  • 专利权人:   CAMPOSO PEREIRA A, NEVES M S
  • 国际专利分类:   C01B032/198, F41H005/04
  • 专利详细信息:   BR102020025005-A2 21 Jun 2022 F41H-005/04 202308 Pages: 9
  • 申请详细信息:   BR102020025005-A2 BR10025005 08 Dec 2020
  • 优先权号:   BR10025005

▎ 摘  要

NOVELTY - A composite material comprises a natural fiber-reinforced thermoset polymer. USE - Composite material is used for manufacturing ceramic material, multilayer armor, personal vest, military vehicle, or layer of multilayer ballistic system e.g. ballistic armor for protection against firing of rifle with caliber ammunition 7.62 mm or 5.56 mm (all claimed). ADVANTAGE - The composite material is lightweight, and can be manufactured by economical method, and has excellent ballistic performance, strength and toughness. The composite material in the multilayer ballistic system has desired function of capturing the ceramic and projectile fragments resulting from the frontal impact. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: manufacture (P1) of the composite material, which involves accommodating 30 vol.% ramie fibers functionalized with graphene oxide inside a suitable metallic mold, adding a graphene oxide-functionalized polyester resin in the form of fluid, and sealing the mold; a ceramic material, which comprises the composite material and 4 %mass alumina doped with niobium pentoxide with hexagonal geometry, and has a thickness of 7 mm, 8 mm, 9 mm or 10 mm. The ceramic material is prepared by weighing alumina powder, niobium pentoxide and polyethylene glycol in liquid phase, passing to an alumina ball mill, ball-milling for 12 hours and drying in an oven at 80° C for 48 hours; manufacture (P2) of the ceramic material, which involves sieving raw material of ceramic material, pressing under a pressure of 30 MPa and sintering; and a multilayer armor, which comprises the composite material bonded to a ceramic front layer responsible for eroding the projectile and attenuating its impact, with a polyurethane adhesive.