Production of fibers or films using specific forming solutions and the
fibers of films obtainable thereby
    2.
    发明授权
    Production of fibers or films using specific forming solutions and the fibers of films obtainable thereby 失效
    使用特定的成形溶液生产纤维或薄膜以及由此获得的薄膜的纤维

    公开(公告)号:US5646234A

    公开(公告)日:1997-07-08

    申请号:US416148

    申请日:1995-04-04

    摘要: A process for producing fibers or films by the steps of:a) preparing an aromatic polyamide by polycondensation of dicarbonyl dihalides or mixtures thereof with at least two diamines in N-alkyllactams as a solvent, the polycondensation being of at least 90 mol %, based on the total amount of dicarbonyl dihalides in the reaction mixture, of compounds of the formula I or mixtures of such compoundsHal--OC--Ar.sup.1 --CO--Hal (I)with at least 90 mol%, based on the total amount of diamines in the reaction mixture, of compounds of the formula II and optionally III or mixtures of such compoundsH.sub.2 N--Ar.sup.2 --NH.sub.2 (II), H.sub.2 N--Ar.sup.3 --NH.sub.2 (III)where Ar.sup.1, Ar.sup.2 and Ar.sup.3 are independently of each other a bivalent aromatic radical, the proportion of structural repeat units in the aromatic polyamide derived from the compounds of the formula II, based on the proportion of the structural repeat units derived from the compounds of the formulae II and III, being at least 50 mol %, and said aromatic polyamide is soluble in organic solvents,b) forcing the solution of the aromatic polyamide obtained in step a) through dies of the desired cross-sectional shape at temperatures from 40.degree. to 120.degree. C. to form fibers or films,c) removing the organic solvent in a conventional manner to produce solvent-leaner or -free fibers or films sufficiently mechanically stable and nontacky for further processing.The process of the invention omits the customary neutralization after the aromatic polyamide has been prepared.

    摘要翻译: 一种通过以下步骤制备纤维或薄膜的方法:a)通过二羰基二卤化物或其混合物与N-烷基内酰胺中的至少两种二胺作为溶剂进行缩聚来制备芳族聚酰胺,所述缩聚为至少90mol%,基于 对于反应混合物中二羰基二卤化物的总量,式I化合物或这些化合物Hal-OC-Ar1-CO-Hal(I)的混合物与至少90mol%的二胺的总量相比, 反应混合物,式II和任选III的化合物或这些化合物H 2 N-Ar 2 -NH 2(II),H 2 N-Ar 3 -NH 2(III)的混合物,其中Ar 1,Ar 2和Ar 3彼此独立地是二价芳族基团 衍生自式II化合物的芳族聚酰胺中结构重复单元的比例基于衍生自式II和III的化合物的结构重复单元的比例为至少50mol%,所述芳族 聚酰胺可溶于或 粗制溶剂,b)在40℃至120℃的温度下,将步骤a)中获得的芳族聚酰胺溶液强迫所需的横截面形状,以形成纤维或膜,c)将 以常规的方式制备足够机械稳定和非粘性以进行进一步处理的溶剂稀的或无 - 纤维或薄膜。 在制备芳族聚酰胺之后,本发明的方法省略了常规中和。

    Two-component loop yarns comprising aramid filaments, manufacture
thereof and use thereof
    3.
    发明授权
    Two-component loop yarns comprising aramid filaments, manufacture thereof and use thereof 失效
    包含芳族聚酰胺长丝的双组分环纱,其制造及其用途

    公开(公告)号:US5645935A

    公开(公告)日:1997-07-08

    申请号:US567289

    申请日:1995-12-05

    IPC分类号: D01F6/80 D02G1/16 D02G3/00

    摘要: Two-component loop yarns are composed of core and effect filaments, at least part of the core component consisting of aromatic polyamides, wherein the aromatic polyamides contain the structural repeat units of the formulae I and II--OC--Ar.sup.1 --CO--NH--Ar.sup.2 --NH-- (I)--OC--Ar.sup.1 --CO--NH--Ar.sup.3 --NH-- (II),where Ar.sup.1, Ar.sup.2 and Ar.sup.3 are each independently of the others a bivalent mono- or polycyclic aromatic radical whose free valences are disposed para or meta or comparably parallel, coaxial or angled to each other, and Ar.sup.2 and Ar.sup.3 each have different individual meanings within the scope of the given definitions, and the respective monomer components underlying the polymer are selected so as to produce an aromatic polyamide which forms preferably isotropic solutions in organic solvents.

    摘要翻译: 双组分环纱由芯和效应丝组成,至少部分芯组分由芳族聚酰胺组成,其中芳族聚酰胺含有式I和II-OC-Ar1-CO-NH-Ar2的结构重复单元 -NH-(I)-OC-Ar1-CO-NH-Ar3-NH-(II),其中Ar1,Ar2和Ar3各自独立地为二价单价或多环芳族基团,其自由价位置为对位或 间或相似地平行,同轴或彼此成角度,并且Ar2和Ar3在给定定义的范围内各自具有不同的个体含义,并且选择聚合物下面的相应单体组分以产生优选各向同性的芳族聚酰胺 有机溶剂中的溶液。

    Method of producing carbon fibers, and methods of making protective clothing and a filter module
    5.
    发明授权
    Method of producing carbon fibers, and methods of making protective clothing and a filter module 失效
    生产碳纤维的方法,以及制作防护服的方法和过滤器模块

    公开(公告)号:US07708805B2

    公开(公告)日:2010-05-04

    申请号:US11656259

    申请日:2007-01-22

    IPC分类号: D01F9/12

    CPC分类号: D01F9/22

    摘要: Porous carbon fibers, whose active centers are formed by pores that are filled at least in part by carbon and/or metal and/or metal carbide, obtainable by carbonization of organic or inorganic polymers, the use thereof for the adsorption or separation of gaseous substances, in particular of CO2, and also a method for the production thereof. First, a spinning mixture containing polyacrylonitrile-based polymer A and an organic or metallo-organic polymer B is produced. Next, the spinning mixture is spun to form mixed fibers of polymer A and polymer B. The mixed fiber is stabilized by oxidation. This is followed by carbonization or graphitization of the mixed fiber under non-oxidizing conditions in such a way that the polymer B forms a carbon and/or metal and/or metal carbide residue of at least 22 wt %, the residue forming active centers.

    摘要翻译: 多孔碳纤维,其活性中心由至少部分由碳和/或金属和/或金属碳化物填充的孔形成,可通过有机或无机聚合物的碳化获得,其用于吸附或分离气态物质 ,特别是二氧化碳,以及其制备方法。 首先,制备含有聚丙烯腈类聚合物A和有机或金属有机聚合物B的纺丝混合物。 接下来,将纺丝混合物纺丝以形成聚合物A和聚合物B的混合纤维。混合纤维通过氧化而稳定。 接着在非氧化条件下使混合纤维碳化或石墨化,使得聚合物B形成至少22重量%的碳和/或金属和/或金属碳化物残余物,残余物形成活性中心。

    Aromatic polyamide staple fiber bundles of improved dispersibility in
viscous matrices and production of fiber-reinforced composites
    6.
    发明授权
    Aromatic polyamide staple fiber bundles of improved dispersibility in viscous matrices and production of fiber-reinforced composites 失效
    芳香族聚酰胺短纤维束在粘性基质中的分散性提高,纤维增强复合材料的生产

    公开(公告)号:US5589265A

    公开(公告)日:1996-12-31

    申请号:US372366

    申请日:1995-01-13

    IPC分类号: C04B16/06 C08J5/06 D02G3/00

    摘要: Aromatic polyamide staple fiber bundles of improved dispersibility in viscous matrices and production of fiber-reinforced compositesDescribed are bundles of aromatic polyamide staple fibers having a staple length of at least 1 mm which have been provided with an effective amount of an agent which enhances the cohesion of the fiber bundle.The staple fiber bundles are held together by the adhesive before mixing into a matrix material and separate into individual fibers on mixing into the matrix material. There is no need for special mixing apparatus.

    摘要翻译: 在粘性基质中提高分散性的芳香族聚酰胺短纤维束和纤维增强复合材料的制造描述了具有至少1mm长度的短纤维长度的芳族聚酰胺短纤维束,其已经提供了有效量的增强凝聚力的试剂 的纤维束。 短纤维束在混合成基质材料之前通过粘合剂保持在一起,并在混合成基质材料时分离成单独的纤维。 不需要特殊的混合装置。

    Monitoring the uniformity of tows
    7.
    发明授权
    Monitoring the uniformity of tows 失效
    监测丝束的均匀性

    公开(公告)号:US5490308A

    公开(公告)日:1996-02-13

    申请号:US235185

    申请日:1994-04-29

    CPC分类号: D01H13/22

    摘要: A method monitors and measures the uniformity of tows with mechanical sensing elements in the course of production on a tow line. The tension of the running tow is measured upstream of a transport roll arrangement and is utilized as a measure of the uniformity of the tow. Irregularities in the tow result in tow tension determination outside a predetermined tension range, and when the determined tension measurement is outside that range the irregular tow portions are remove. Also, the frequency of tow tension determination outside a predetermined range may be used as an indication of tow quality and for removing substandard tows.

    摘要翻译: 一种方法是在拖绳生产过程中监测和测量机械传感元件的丝束的均匀性。 在运输辊装置的上游测量运行丝束的张力,并且用作丝束的均匀性的量度。 拖曳中的不规则性导致在预定张力范围之外的牵引张力确定,并且当确定的张力测量超出该范围时,去除不规则的丝束部分。 此外,在预定范围之外的牵引张力确定的频率可以用作丝束质量的指示和用于移除不合标准的丝束。

    Heat-conducting plate of expanded graphite, composite and method for production
    8.
    发明申请
    Heat-conducting plate of expanded graphite, composite and method for production 有权
    膨胀石墨导热板,复合材料及生产方法

    公开(公告)号:US20050051538A1

    公开(公告)日:2005-03-10

    申请号:US10931422

    申请日:2004-09-01

    摘要: Lightweight heat-conducting plates of compressed expanded graphite material have layer planes which are preferably disposed so as to be parallel to the surface so that heat conduction in a lateral direction is preferred to heat conduction perpendicular to the plate plane. The heat-conducting plates are suitable for the transmission of heat of floor-heating, wall-heating, ceiling-heating and other flatly disposed heating systems and air-conditioning ceilings, for the transmission of heat and the dissipation of heat in buildings, automobiles, machines, installations and containers. The heat-conducting plates are dimensionally stable without the addition of binder and aggregates and can be produced in a continuous process. A composite component having at least one heat-conducting plate and a method for production of heat-conducting plates are also provided.

    摘要翻译: 压缩膨胀石墨材料的轻质导热板具有优选地设置成平行于表面的层平面,使得横向上的热传导优选垂直于板平面的热传导。 导热板适用于地板加热,壁加热,天花板加热和其他扁平布置的加热系统和空调天花板的传热,用于建筑物,汽车中的热量传递和散热 ,机器,装置和容器。 导热板的尺寸稳定性,不需要添加粘合剂和聚集体,并且可以在连续的方法中制造。 还提供了具有至少一个导热板的复合部件和制造导热板的方法。