• 专利标题:   Reduced graphene oxide in liquid rubber composition used in tire design and induce scalable reduction of bulk density, comprises e.g. mixing reduced graphene oxides with aqueous solution of water and water-soluble polymer and grinding.
  • 专利号:   WO2022146429-A1
  • 发明人:   VAUTARD F
  • 专利权人:   CIE GEN ETAB MICHELIN CIE, VAUTARD F
  • 国际专利分类:   B02C017/04, B05D001/02, B29C045/00, B29C070/58
  • 专利详细信息:   WO2022146429-A1 07 Jul 2022 B02C-017/04 202261 Pages: 17 English
  • 申请详细信息:   WO2022146429-A1 WOUS067492 30 Dec 2020
  • 优先权号:   WOUS067492

▎ 摘  要

NOVELTY - Reduced graphene oxide (RGO) reinforced rubber composition comprises a milled material comprising a reduced graphene oxide milled with: a liquid rubber; an uncured rubber elastomer; an antidegradant package; and a curing package. The liquid rubber has a molecular weight of 1500-54000 g.mol-1. The composition is placed into a mold and heated to form a cured rubber product. The curing package includes sulfur and an accelerator e.g. n-cyclohexyl -2-benzothiazole sulfonamide (CBS). The milling of the graphene oxide and the liquid rubber occurs in nitrogen or in a ball mill. USE - The composition is useful for tire design. ADVANTAGE - The composition improves dispersion by limiting re-stacking, generates covalent bonding of the RGO with the matrix and assures good interfacial adhesion, and increases the tap density to levels that enable an easy handling of the powder. A potential solvent-free, scalable process, for decreasing the lateral size of RGO platelets and grafting molecules on their surface at the same time is reactive grinding/milling. DESCRIPTION OF DRAWING(S) - The figure shows schematic cross-sectional view of the secant modulus curves corresponding to milled with and without liquid rubber.