• 专利标题:   Polyamide material useful for automobile damping spring pad, comprises polyamide 66, polypropylene, modified filler, compatibilizer, and antioxidant.
  • 专利号:   CN115558289-A
  • 发明人:   CHEN S, HUANG J, DING X, YU Q
  • 专利权人:   ANHUI HUASHENG PLASTIC CO LTD
  • 国际专利分类:   C08K003/04, C08K003/34, C08K005/526, C08K007/14, C08K009/06, C08K009/12, C08L023/12, C08L051/06, C08L077/06
  • 专利详细信息:   CN115558289-A 03 Jan 2023 C08L-077/06 202317 Chinese
  • 申请详细信息:   CN115558289-A CN11244656 12 Oct 2022
  • 优先权号:   CN11244656

▎ 摘  要

NOVELTY - Polyamide material comprises 88-92 pt. wt. polyamide 66, 8-12 pt. wt. polypropylene, 25-30 pt. wt. modified filler, 8-12 pt. wt. compatibilizer, and 1-2 pt. wt. antioxidant. The modified filler is obtained by adding modified glass fiber to the graphene oxide aqueous dispersion with pH of less than 7, mixing uniformly, allowing to stand, performing solid-liquid separation, and washing to obtain the intermediate material, adding the intermediate material to the modified nano-montmorillonite aqueous dispersion with pH of 7, mixing uniformly, allowing to stand for the second time, performing solid-liquid separation, washing, and drying to obtain the modified filler, and modifying silane coupling agent containing an amino group to obtain modified glass fiber and the modified nano-montmorillonite. USE - The polyamide material is useful for automobile damping spring pad. ADVANTAGE - The polyamide material: is light and has good toughness and strength; and provides the automobile damping spring pad with improved interface bonding performance and mechanical performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing polyamide material for automobile shock-absorbing spring pad comprising melt blending polyamide66, polypropylene, compatibilizer, and antioxidant to obtain semi-finished granules, mixing the semi-finished granules and modified fillers and extruding by a twin-screw machine to obtain polyamide materials for automobile shock-absorbing spring pads.