• 专利标题:   Preparing corrosion-resistant coating comprises e.g. adding graphene into the barium hydroxide pretreatment solution, adding mixture into the organic solvent, adding coupling agent and defoaming agent and defoaming.
  • 专利号:   CN110845936-A
  • 发明人:   CHEN Q, ZAN H, ZENG J
  • 专利权人:   CHENGDU NEW KELI CHEM ENG SCI TECHNIC
  • 国际专利分类:   C09D163/00, C09D005/08
  • 专利详细信息:   CN110845936-A 28 Feb 2020 C09D-163/00 202023 Pages: 8 Chinese
  • 申请详细信息:   CN110845936-A CN11127005 18 Nov 2019
  • 优先权号:   CN11127005

▎ 摘  要

NOVELTY - Preparing corrosion-resistant coating comprises (i) adding graphene into the barium hydroxide pretreatment solution and stirring for at least 30 minutes, adding boric acid solution dropwise under ultrasonic agitation, reacting at 30-50 degrees C for 60-90 minutes, aging, filtering, washing, and drying to obtain amorphous nano-barium metaborate powder, calcining amorphous nano-barium metaborate powder at 400-600 degrees C for at least 1 hour to obtain graphene-supported barium metaborate powder, (ii) placing graphene-supported barium metaborate powder, epoxy resin and reinforcing powder in grinder until all the powder passes through 200 mesh sieve to obtain mixture for use, and (iii) adding mixture into the organic solvent and stirring for at least 30 minutes, adding coupling agent and defoaming agent and stirring for at least 10 minutes, performing ultrasonic dispersion for at least 10 minutes, and defoaming in vacuum. USE - The corrosion-resistant coating is useful in buried plastic pipes (claimed). ADVANTAGE - The corrosion-resistant coating has excellent corrosion resistance and salt-alkali resistance; solves problems that buried plastic pipes in saline-alkali areas, and coastal tidal areas in prior art have short service life and are easily eroded by saline-alkali, and exhibits synergistic effect.