• 专利标题:   High-barrier bromobutyl rubber with alternating layered structure, comprises carbon black modified bromobutyl rubber layer A and sheet filler modified bromobutyl rubber layer B.
  • 专利号:   CN113733689-A, CN113733689-B
  • 发明人:   ZHANG L, YANG S, GUO S, WU H, XIONG Y
  • 专利权人:   UNIV SICHUAN
  • 国际专利分类:   B32B025/04, B32B025/18, C08J005/18, C08K003/04, C08K003/06, C08K003/22, C08K007/00, C08K009/04, C08L023/28, C08L091/00
  • 专利详细信息:   CN113733689-A 03 Dec 2021 B32B-025/18 202234 Chinese
  • 申请详细信息:   CN113733689-A CN11070566 13 Sep 2021
  • 优先权号:   CN11070566

▎ 摘  要

NOVELTY - High-barrier bromobutyl rubber with alternating layered structure, comprises carbon black modified bromobutyl rubber layer A and sheet filler modified bromobutyl rubber layer B, where the bromobutyl rubber layer A and the bromobutyl rubber layer B are alternately stacked to form a layered bromobutyl rubber; the bromobutyl rubber layer B, along the direction perpendicular to the gas diffusion, has two large size flake filler barrier layer. USE - Used as high-barrier bromobutyl rubber with alternating layered structure. ADVANTAGE - The base materials of layer A and layer B are both bromobutyl rubber, which can form an integral rubber material after the process of compression molding, and the compatibility and adhesion between layers are good , which can form rich interfacial energy, provide more diffusion paths for small gas molecules, and then improve the gas barrier properties of rubber materials. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing a high-barrier bromobutyl rubber with an alternating layered structure, comprising: combining the bromobutyl rubber layer A and the bromine layered bromobutyl rubber material obtained by alternately stacking the butyl rubber layers B or by alternately stacking and co-extruding two extruders, pressing for 4-10 minutes at room temperature under the conditions of 4-20 MPa, and at 100-140℃, vulcanizing for 0.5-3 hours under the condition of 4-20 MPa.