• 专利标题:   Preparing PTFE composite nanofiber material useful in e.g. container, comprises e.g. using polytetrafluoroethylene micropowder, fluorinated graphene, glass fiber, inorganic nano-filler and sodium alginate, adding water, emulsifying agent and initiator, and adding hydroxypropyl methylcellulose ether.
  • 专利号:   CN115011049-A
  • 发明人:   JIANG W, YAO C, TIAN C, JIANG L
  • 专利权人:   GUANGDONG DYTRON ADVANCED MATERIALS CO
  • 国际专利分类:   C08K013/04, C08K003/04, C08K003/08, C08K007/14, C08K007/26, C08L027/18, C08L005/04
  • 专利详细信息:   CN115011049-A 06 Sep 2022 C08L-027/18 202297 Chinese
  • 申请详细信息:   CN115011049-A CN10721629 24 Jun 2022
  • 优先权号:   CN10721629

▎ 摘  要

NOVELTY - Preparing PTFE composite nanofiber material comprises (i) taking polytetrafluoroethylene micropowder, fluorinated graphene, glass fiber, inorganic nano-filler and sodium alginate according to the ratio, adding water, emulsifying agent and initiator for aggregating to form an aqueous emulsion, (ii) adding hydroxypropyl methylcellulose ether into the above-mentioned aqueous emulsion, continuously stirring for 2-4 hours, cooling to room temperature, carrying out solid-liquid separation, collecting solid and drying, (iii) uniformly mixing the dried solid and pressing to obtain a molding material, and (iv) placing the molding material into a sintering box for sintering to obtain the finished product. USE - The method is useful for preparing PTFE composite nanofiber material useful in but are not limited to container, pump, valve and radar, high frequency communication device and radio device. ADVANTAGE - The method: modifies the modified carbon nanotube powder by nano silver powder, which greatly enhances the performance of polytetrafluoroethylene composite nanofiber material itself; improves the performance of the forming process by adding auxiliary agent; easily causes the finished product containing a large amount of micropores; reduces rigidity of the material; and easily causes transverse fracture during the stretching process.