• 专利标题:   Graphene conductive anticorrosive paint useful for subway stray current, comprises epoxy resin, dispersant, organic solvent, filler, coupling agent, hardener and graphene oxide-p-phenylenediamine-carbon nano-tube composite.
  • 专利号:   CN110760237-A
  • 发明人:   YANG B, WEN F, ZHANG S, DI W, LI S
  • 专利权人:   GUANGZHOU SPECIAL PRESSURE EQUIP INSPECT
  • 国际专利分类:   C09D163/00, C09D005/08, C09D005/24
  • 专利详细信息:   CN110760237-A 07 Feb 2020 C09D-163/00 202016 Pages: 14 Chinese
  • 申请详细信息:   CN110760237-A CN10984768 16 Oct 2019
  • 优先权号:   CN10984768

▎ 摘  要

NOVELTY - Graphene conductive anticorrosive paint comprises 50-70% epoxy resin, 0.1-1% dispersant, 10-20% organic solvent, 4-8% filler, 1-5% coupling agent, 10-20% hardener and 1.5-4% graphene oxide-p-phenylenediamine-carbon nano-tube composite. The graphene oxide-p-phenylenediamine-carbon nano-tube composite comprises graphene oxide, p-phenylenediamine and acidified multi-walled carbon nano-tubes with a mass ratio of 1:(7-10):(2-3). The organic solvent is non-protonic polar solvent. USE - The paint is useful for subway stray current. ADVANTAGE - The method plays an excellent role in physical isolation and hinder the penetration of water and corrosive ions into steel materials by forming a protective layer and improves the corrosion resistance of the coating. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the paint, comprising adding the multi-walled carbon nano-tubes into a mixture of concentrated sulfuric acid and concentrated nitric acid and heating under reflux to obtain acidified multi-walled carbon nano-tubes, mixing graphene oxide with p-phenylenediamine in a mass ratio of 1:(7-10), adding aqueous ammonia solution, heating under reflux to obtain reduced graphene oxide grafted with p-phenylenediamine, mixing the reduced graphene oxide grafted with p-phenylenediamine and the acidified multi-walled carbon nanotubes, heating under reflux, and vacuum drying to obtain a graphene oxide-p-phenylenediamine-carbon nano-tube composite and uniformly mixing the raw materials.