POROUS MULTILAYERED HOLLOW-FIBER MEMBRANE AND PROCESS FOR PRODUCING THE SAME
    73.
    发明申请
    POROUS MULTILAYERED HOLLOW-FIBER MEMBRANE AND PROCESS FOR PRODUCING THE SAME 有权
    多孔多层中空纤维膜及其制造方法

    公开(公告)号:US20090297822A1

    公开(公告)日:2009-12-03

    申请号:US12089729

    申请日:2006-10-11

    IPC分类号: B32B3/10 B29C44/22 B32B5/22

    摘要: A porous hollow fiber membrane which has high blocking performance and high water permeability suitable for filtration and the like and exhibits excellent strength, and a process for stably producing the porous hollow fiber membrane are disclosed. The process utilizes a hollow fiber molding nozzle having two or more circular discharge ports which are disposed concentrically. Multilayer melt-extrusion is performed by discharging molten mixtures which include a thermoplastic resin and an organic liquid and differ in composition from the adjacent discharge ports. The resulting product is cooled to solidify to obtain a hollow fiber. The organic liquid is then removed from the hollow fiber by extraction to produce a porous hollow fiber membrane. The molten mixture discharged from at least one circular discharge port includes an inorganic fine powder in addition to the thermoplastic resin and the organic liquid. The inorganic fine powder is removed by extraction after cooling in addition to the organic liquid.

    摘要翻译: 公开了一种多孔中空纤维膜,其具有适合于过滤等的高阻隔性和高透水性并且显示出优异的强度,并且公开了一种用于稳定生产多孔中空纤维膜的方法。 该方法利用具有同心设置的两个或更多个圆形排出口的中空纤维成型喷嘴。 通过排出包括热塑性树脂和有机液体的熔融混合物并且与相邻排出口的组成不同,进行多层熔融挤出。 将所得产物冷却固化,得到中空纤维。 然后通过萃取从中空纤维中除去有机液体,生成多孔中空纤维膜。 从至少一个圆形排出口排出的熔融混合物除了热塑性树脂和有机液体之外还包括无机细粉末。 除了有机液体之外,通过萃取除去无机细粉末。

    ORIENTED NANOFIBERS EMBEDDED IN A POLYMER MATRIX
    76.
    发明申请
    ORIENTED NANOFIBERS EMBEDDED IN A POLYMER MATRIX 有权
    嵌入在聚合物矩阵中的面向对象的纳米纤维

    公开(公告)号:US20090104386A1

    公开(公告)日:2009-04-23

    申请号:US12025626

    申请日:2008-02-04

    摘要: A method of forming a composite of embedded nanofibers in a polymer matrix is disclosed. The method includes incorporating nanofibers in a plastic matrix forming agglomerates, and uniformly distributing the nanofibers by exposing the agglomerates to hydrodynamic stresses. The hydrodynamic said stresses force the agglomerates to break apart. In combination or additionally elongational flow is used to achieve small diameters and alignment. A nanofiber reinforced polymer composite system is disclosed. The system includes a plurality of nanofibers that are embedded in polymer matrices in micron size fibers. A method for producing nanotube continuous fibers is disclosed. Nanofibers are fibrils with diameters 100 nm, multiwall nanotubes, single wall nanotubes and their various functionalized and derivatized forms. The method includes mixing a nanofiber in a polymer; and inducing an orientation of the nanofibers that enables the nanofibers to be used to enhance mechanical, thermal and electrical properties. Orientation is induced by high shear mixing and elongational flow, singly or in combination. The polymer may be removed from said nanofibers, leaving micron size fibers of aligned nanofibers.

    摘要翻译: 公开了一种在聚合物基体中形成嵌入的纳米纤维的复合材料的方法。 该方法包括将纳米纤维纳入形成团块的塑料基质中,并通过将附聚物暴露于流体动力学应力来均匀分布纳米纤维。 流体动力学的所述应力使附聚物分裂。 组合或附加伸长流用于实现小直径和对准。 公开了纳米纤维增强聚合物复合体系。 该系统包括嵌入在微米尺寸纤维中的聚合物基质中的多个纳米纤维。 公开了一种生产纳米管连续纤维的方法。 纳米纤维是直径为100nm的原纤维,多壁纳米管,单壁纳米管及其各种官能化和衍生形式。 该方法包括将纳米纤维混合在聚合物中; 并诱导使纳米纤维能够用于增强机械,热和电性质的纳米纤维的取向。 通过高剪切混合和伸长流,单独或组合诱导取向。 可以从所述纳米纤维中除去聚合物,留下对准的纳米纤维的微米尺寸的纤维。

    Process for making and process for converting polyolefin fibres
    78.
    发明授权
    Process for making and process for converting polyolefin fibres 有权
    聚烯烃纤维的生产和加工工艺

    公开(公告)号:US07364678B2

    公开(公告)日:2008-04-29

    申请号:US10537899

    申请日:2003-12-09

    IPC分类号: D02G1/20

    摘要: The invention relates to a process for making a multi-filament polyethylene yarn via a gel-spinning process, Wherein a spin finish is applied at least once in an amount of 0.1-10 mass % based on the filament, to a filament that contains less than 50 mass % of solvent; the spin finish comprising at least 95 mass % of at least one volatile compound having a boiling point at 0.1 MPa pressure of from 30 to 250° C.; and the spin finish is subsequently removed by exposing the filament to a temperature of below the melting temperature of the filament. With this process a yarn is made that has a very low amount of residues on the surface of the fibres, without the need for a washing or extraction step, showing good mechanical properties, and very suited for e.g. biomedical applications. The invention further relates to a process for converting polyolefin fibres into a semi-finished or end-use product. The invention also concerns a polyethylene yarn and a semi-finished or end-use product obtainable by said processes, as well as to the use of thereof in biomedical applications.

    摘要翻译: 本发明涉及一种通过凝胶纺丝法制造复丝聚乙烯纱线的方法,其中纺丝整理剂以基于长丝的0.1-10质量%的量施加至少一次至包含较少的丝 超过50质量%的溶剂; 旋涂完成包含至少95质量%的沸点为0.1MPa压力为30至250℃的至少一种挥发性化合物; 然后通过将细丝暴露于低于丝的熔化温度的温度来除去旋涂。 通过该方法,在纤维表面上制备具有非常少量的残余物的纱线,而不需要洗涤或提取步骤,显示出良好的机械性能,并且非常适合于例如纤维。 生物医学应用。 本发明还涉及将聚烯烃纤维转变成半成品或最终用途产品的方法。 本发明还涉及可通过所述方法获得的聚乙烯纱线和半成品或最终用途产品,以及其在生物医学应用中的用途。

    Natural tourmaline anion fiber and filter and producing method
    79.
    发明申请
    Natural tourmaline anion fiber and filter and producing method 有权
    天然电气阴离子纤维和过滤器及其制备方法

    公开(公告)号:US20070259178A1

    公开(公告)日:2007-11-08

    申请号:US11416155

    申请日:2006-05-03

    IPC分类号: B32B15/00

    摘要: The present invention provides to a method of producing fiber from tourmaline anion fiber; of which, polypropylene or polyethylene chip, TPE and submicrometer tourmaline particle are prepared and then rolled into submicrometer tourmaline agglomerate through granulation by double screw; then, take submicrometer tourmaline agglomerate and polypropylene or polyethylene chip, of which the content of tourmaline agglomerate accounts for 1˜10% of gross weight, and TPE for 1˜40% of gross weight; tourmaline agglomerate and polypropylene or polyethylene are melted into composite fiber or filter material via spinning, such that the fiber or filter material can yield anion and present outstanding gas permeability and mechanical property.

    摘要翻译: 本发明提供一种由电气石阴离子纤维生产纤维的方法; 其中制备聚丙烯或聚乙烯芯片,TPE和亚微米电气石颗粒,然后通过双螺杆粉碎成亚微米电气石团聚体; 然后采用亚微米电气石聚集体和聚丙烯或聚乙烯芯片,其中电气石聚集体含量占总重量的1〜10%,TPE占总重量的1〜40%; 电气石聚集体和聚丙烯或聚乙烯通过纺丝熔化成复合纤维或过滤材料,使得纤维或过滤材料可产生阴离子并具有优异的气体渗透性和机械性能。