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
    • 3. 发明申请
    • A METHOD FOR THE HIGH-THROUGHPUT PREPARATION OF CARBON NANOTUBE HOLLOW FIBER MEMBRANES
    • 碳纳米管中空纤维膜的高通量制备方法
    • US20170014777A1
    • 2017-01-19
    • US15120637
    • 2014-04-28
    • DALIAN UNIVERSITY OF TECHNOLOGY
    • Xie QUANGaoliang WEIShuo CHENHongtao YU
    • B01D67/00B01D69/14B01D71/66B01D71/44B01D71/42B01D71/32B01D69/08B01D71/02
    • B01D67/0079B01D67/0011B01D67/0067B01D69/02B01D69/08B01D69/085B01D69/148B01D71/021B01D71/32B01D71/38B01D71/42B01D71/44B01D71/66B01D2325/26B82B3/0009
    • The invention, belonging to the field of membrane technology, presents a method for the high-throughput preparation of carbon nanotube hollow fiber membranes. This method contains three major steps. Firstly, the pristine carbon nanotubes (CNTs) are added into a mixture of concentrated nitric acid and sulfuric acid, which is then heated at 40˜80° C. for 0.5˜6 hours. Secondly, the surface-functionalized CNTs and polyvinyl butyral (PVB) are dispersed and dissolved, respectively, in organic solvents at a mass ratio of 1:0.2˜1:4˜8 to form homogeneous spinning solution, which is squeezed into water as shell liquid with water as core liquid at a flow rate ratios of 0.5˜5:1 through a spinneret to form CNT/PVB hollow fibers. Finally, the dry fibers are calcinated at 600˜1000 ° C. for 1˜4 hours in absence of oxygen to produce free-standing CNT hollow fiber membranes. The method involved in this invention is simple and highly efficient without needing any templates, expensive apparatuses and chemicals. Additionally, the obtained electrically conductive CNT hollow fiber membranes feature a high porosity, high water flux and strong acid/alkali resistance.
    • 属于膜技术领域的本发明提出了一种高通量制备碳纳米管中空纤维膜的方法。 此方法包含三个主要步骤。 首先,将原始碳纳米管(CNT)加入到浓硝酸和硫酸的混合物中,然后在40〜80℃下加热0.5〜6小时。 其次,将表面官能化的CNT和聚乙烯醇缩丁醛(PVB)分别溶解在有机溶剂中,质量比为1:0.2〜1:4〜8,形成均匀的纺丝溶液,将其挤入水中作为壳 液体以水为核心液体,流速比为0.5〜5:1,通过喷丝头形成CNT / PVB中空纤维。 最后,将干纤维在600〜1000℃下煅烧1〜4小时而不存在氧气,制成独立的CNT中空纤维膜。 本发明涉及的方法简单而高效,而不需要任何模板,昂贵的设备和化学品。 另外,得到的导电性CNT中空纤维膜的孔隙率高,水通量高,耐酸碱性强。