会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明专利
    • Production of precursor pitch for carbon fiber
    • 生产碳纤维前置石板
    • JPS6187790A
    • 1986-05-06
    • JP20953284
    • 1984-10-05
    • Kawasaki Steel CorpNitto Boseki Co Ltd
    • OOSUGI YUKIHIROYUMITATE KOZOKAMISHITA MAMORU
    • C10C3/02C10C3/00C10C3/08C10C3/10D01F9/145D01F9/15
    • C10C3/08C10C3/002
    • PURPOSE: To obtain the titled pitch for carbon fiber, which has excellent thermal stability, spinnability, infusibility, etc., by dissolving tar pitch in an arom. solvent to separate and remove quinoline and pyridine insolubles and heat-treating the residue.
      CONSTITUTION: Tar pitch is dissolved in an arom. solvent (e.g. pyridine) and the resulting soln. is subjected to a separating treatment such as centrifugal separation or filtration to remove quinoline insolubles mainly composed of carbon to such an extent that the content thereof is reduced to a trance amount, and at the same time to remove pyridine insolubles to such an extent that the content thereof is reduced to 5wt% or below. The resulting pitch is heat- treated to obtain a precursor pitch for carbon fiber, which contains 45W65wt% benzene insolubles and no mesophase. Pref. the heat treatment is carried out at 350W450°C under reduced pressure of 20mmHg while bubbling inert gas through the soln.
      COPYRIGHT: (C)1986,JPO&Japio
    • 目的:通过将焦油沥青溶解在芳香中获得具有优异的热稳定性,可纺性,不熔融性等的碳纤维的标准沥青。 溶剂分离并除去喹啉和吡啶不溶物并热处理残余物。 构成:焦油沥青溶于芳香。 溶剂(如吡啶)和所得溶液。 进行离心分离或过滤等分离处理,除去主要由碳组成的喹啉不溶物,使其含量降低至恍惚量,同时将吡啶不溶物除去至 其含量降低至5重量%以下。 所得沥青经热处理以获得碳纤维的前体沥青,其含有45-65重量%苯不溶物且不含中间相。 Pref。 在350-450℃,20mmHg的减压下进行热处理,同时将惰性气体通过溶胶鼓泡。