• 专利标题:   Preparing hydrophobic absorbent material based on polyurethane foam comprises e.g. mixing graphene oxide, crosslinking agent and fluorine-containing monomer, carrying out reaction, drying, grinding, pre-polymerizing, foaming and curing.
  • 专利号:   CN113274989-A
  • 发明人:   LI J, CHEN H, LIU N, TAO T
  • 专利权人:   UNIV NANJING INFORMATION SCI TECHNOLOG
  • 国际专利分类:   B01J020/26, B01J020/28, B01J020/30, C02F001/28, C02F101/30, C02F101/32
  • 专利详细信息:   CN113274989-A 20 Aug 2021 B01J-020/26 202174 Pages: 16 Chinese
  • 申请详细信息:   CN113274989-A CN10605686 31 May 2021
  • 优先权号:   CN10605686

▎ 摘  要

NOVELTY - Preparing hydrophobic absorbent material based on polyurethane foam comprises (i) mixing graphene oxide, crosslinking agent and fluorine-containing monomer, carrying out the reaction to obtain modified graphene oxide, drying and grinding to obtain hydrophobic graphene oxide powder, (ii) using polyoxypropylene glycol (PPG), xylylene diisocyanate (XDI), and modified graphene oxide as raw materials, and pre-polymerizing to obtain a prepolymer, (iii) adding stannous octoate and 1,8-diazabicycloundec-7-ene (DBU) as a catalyst, and silicon-carbon chain type L-580 as a stabilizer, adding to a container and stirring and mixing, adding prepolymer at 70-80 degrees C, stirring for 100-200 seconds, and adding distilled water for foaming, and (iv) curing foam. USE - The method is useful for preparing hydrophobic absorbent material based on polyurethane foam. ADVANTAGE - The method: modifies the polyurethane foam with graphene oxide modified with a fluorine-containing monomer. The foam: has high porosity, large specific surface area, interconnected pore structure, and high adsorption efficiency and recyclability.