• 专利标题:   Composite hydrogel having network structure used in wastewater treatment comprises polyethylene-based hydrogel including polyacrylamide hydrogel and/or polyacrylic acid hydrogel and is crosslinked by graphene oxide and crosslinking agent.
  • 专利号:   CN110760028-A, CN110760028-B
  • 发明人:   ZHANG J, WANG Y, WANG J, MING L
  • 专利权人:   NINGBO FENGCHENG ADVANCED ENERGY MATERIA
  • 国际专利分类:   B01J020/26, B01J020/28, B01J020/30, C02F001/28, C02F101/30, C02F101/36, C02F101/38, C08F120/06, C08F002/44, C08F002/46, C08F002/48, C08F002/56, C08F220/06, C08F220/56, C08F222/38
  • 专利详细信息:   CN110760028-A 07 Feb 2020 C08F-220/06 202018 Pages: 12 Chinese
  • 申请详细信息:   CN110760028-A CN11387815 30 Dec 2019
  • 优先权号:   CN11387815

▎ 摘  要

NOVELTY - Composite hydrogel having network structure comprises polyethylene-based hydrogel including polyacrylamide hydrogel and/or polyacrylic acid hydrogel and is crosslinked by graphene oxide and crosslinking agent containing at least two crosslinking groups, each consisting of carbon to carbon group and amine group. USE - The composite hydrogel having network structure is used in wastewater treatment (claimed). ADVANTAGE - The composite hydrogel has mechanical strength of 28-50 kPa; swelling ratio of 1-11 g/g; adsorption ratio to heavy metal ions of 0.8-7 g/g, in which heavy metal ions comprise copper ion (Cu2+), zinc ion (Zn2+), or mercury ion (Hg2+); and has adsorption to basic fuchsin of 5-10 mg/g. DETAILED DESCRIPTION - Composite hydrogel having network structure comprises polyethylene-based hydrogel including polyacrylamide hydrogel and/or polyacrylic acid hydrogel and is crosslinked by graphene oxide and crosslinking agent containing at least two crosslinking groups, each consisting of carbon to carbon group (C=C) and amine group (-NH2). An INDEPENDENT CLAIM is included for preparation of composite hydrogel by mixing raw materials containing vinyl compound, graphene oxide and crosslinking agent; pre-reacting; adding initiator; and polymerizing to obtain composite hydrogel.