High-strength high-modulus polyacrylonitrile fibers, method for their production and use
    11.
    发明授权
    High-strength high-modulus polyacrylonitrile fibers, method for their production and use 失效
    高强度高模量聚丙烯腈纤维,其生产和使用方法

    公开(公告)号:US06228966B1

    公开(公告)日:2001-05-08

    申请号:US09319645

    申请日:1999-06-09

    申请人: Richard Neuert

    发明人: Richard Neuert

    IPC分类号: C08F2044

    CPC分类号: D01F6/18

    摘要: This invention describes high-strength fibers with high initial moduli from homopolymers or copolymers comprising at least 70% by weight repeating acrylonitrile and/or methacrylonitrile units, and a process especially adapted for their preparation, and their use, especially as reinforcing materials or for producing filters or friction coatings. The fibers according to the invention have a strength of more than 100 cN/tex and an initial modulus of more than 15 N/tex (based on 100% elongation).

    摘要翻译: 本发明描述了具有来自均聚物或共聚物的高初始模量的高强度纤维,其包含至少70重量%的重复丙烯腈和/或甲基丙烯腈单元,以及特别适于其制备的方法及其用途,特别是作为增强材料或用于生产 过滤器或摩擦涂层。 根据本发明的纤维具有大于100cN / tex的强度和大于15N / tex的初始模量(基于100%伸长率)。

    Production of fibers or films using specific forming solutions and the
fibers of films obtainable thereby
    12.
    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。

    Process and apparatus for guiding a tow
    14.
    发明授权
    Process and apparatus for guiding a tow 失效
    过程和设备指导

    公开(公告)号:US5214828A

    公开(公告)日:1993-06-01

    申请号:US679224

    申请日:1991-04-02

    CPC分类号: D02J1/18 G01N33/365

    摘要: A process and apparatus for guiding a continuous moving tow in synthetic fiber manufacture. The profile (the thickness distribution and width) and the position of the tow are continuously sensed in a non-contact manner and an appropriate electrical signal is generated. This electrical signal is used to control the profile and the position of the tow in such a way that its profile and position stay within predetermined target value ranges. The tow geometry is preferably sensed using a CCD camera, while the tow geometry is controlled using tow-engaging deflecting means. In this way it is possible to optimize tow profile and position, for example for entry into a stuffer box (FIG. 1).

    摘要翻译: 用于在合成纤维制造中引导连续移动的丝束的方法和装置。 轮廓(厚度分布和宽度)和丝束的位置以非接触的方式连续感测,并产生适当的电信号。 该电信号用于控制丝束的轮廓和位置,使得其轮廓和位置保持在预定目标值范围内。 优选地,使用CCD照相机感测丝束几何形状,而使用牵引接合偏转装置来控制丝束几何形状。 以这种方式,可以优化丝束轮廓和位置,例如用于进入填塞箱(图1)。

    Method of producing carbon fibers, and methods of making protective clothing and a filter module
    15.
    发明申请
    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:US20070132128A1

    公开(公告)日:2007-06-14

    申请号:US11656259

    申请日:2007-01-22

    IPC分类号: D01F8/00

    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CO 2 2,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。

    Spin finished aramid fibers and use thereof
    17.
    发明授权
    Spin finished aramid fibers and use thereof 失效
    旋转完成芳纶纤维并使用它

    公开(公告)号:US5674615A

    公开(公告)日:1997-10-07

    申请号:US410041

    申请日:1995-03-24

    摘要: Described are aramid fibers with a spin finish comprising A) a compound of the formula I and/or II R.sup.1 --COO--(R.sup.2 --O).sub.x --R.sup.3 (I) R.sup.3 --(O--R.sup.2).sub.x --OOC--R.sup.4 --COO--(R.sup.2 --O).sub.x --R.sup.3 (II) and B) a compound of the formula III ##STR1## where R.sup.1 is alkyl or alkenyl having eight to eighteen carbon atoms, x is an integer from four to twenty, R.sup.2 is butylene, propylene or ethylene, R.sup.3 is hydrogen or C.sub.1 -C.sub.22 -alkyl or C.sub.2 -C.sub.22 -alkenyl, R.sup.4 is alkylene or alkenylene having eight to eighteen carbon atoms, R.sup.5 is alkyl or alkenyl having eight to eighteen carbon atoms, R.sup.6 and R.sup.7 are each alkyl having one to twelve carbon atoms, and R.sup.8 is alkylene having one to four carbon atoms. The aramid fibers are usable in particular in the production of textile sheet materials by intermingling, twisting, braiding or folding.

    摘要翻译: 描述了具有旋涂的芳族聚酰胺纤维,其包括A)式I和/或IIR1-COO-(R2-O)x-R3(I)R3-(O-R2)x-OOC-R4-COO- (R 2 -O)x -R 3(II)和B)式III化合物(III)其中R1是具有8至18个碳原子的烷基或烯基,x是4至20的整数,R2是 丁烯,丙烯或乙烯,R 3是氢或C 1 -C 22 - 烷基或C 2 -C 22 - 烯基,R 4是具有8至18个碳原子的亚烷基或亚烯基,R 5是具有8至18个碳原子的烷基或烯基,R 6和R 7是 每个烷基具有1至12个碳原子,并且R 8是具有1至4个碳原子的亚烷基。 芳族聚酰胺纤维特别可用于通过混合,扭曲,编织或折叠来生产纺织片材。

    Mass-colored formed structures based on aromatic polyamides,
mass-colored fiber, and premix for producing mass-colored formed
structures
    18.
    发明授权
    Mass-colored formed structures based on aromatic polyamides, mass-colored fiber, and premix for producing mass-colored formed structures 失效
    基于芳族聚酰胺,大量着色的纤维和用于生产大量着色的成形结构的预混物的大量着色的成形结构的生产

    公开(公告)号:US5662852A

    公开(公告)日:1997-09-02

    申请号:US368435

    申请日:1995-01-04

    摘要: A process for producing mass-colored fiber or film, comprises the steps of:a) preparing a premix by grinding a composition comprising a polar aprotic organic solvent, 5 to 30% by weight of an aromatic polyamide and 0.5 to 5% by weight of a color-conferring solid component so that the color-conferring solid component has particles with an average diameter of less than 200 nm,b) preparing a forming solution by mixing the premix produced in step a) with a solution comprising a polar aprotic organic solvent and an aromatic polyamide which corresponds to the aromatic polyamide used in step a), just upstream of a forming die,c) extruding the forming solution through the forming die which comprises orifices in a predetermined number and shape to produce primary fiber or film,d) removing the polar aprotic organic solvent in a conventional manner to leave solvent-leaner or-free fiber or film of sufficient mechanical stability and nontackiness for further processing, ande) optionally orienting the resulting fiber or film in a convention manner.

    摘要翻译: 一种生产大量着色的纤维或薄膜的方法,包括以下步骤:a)通过研磨包含极性非质子有机溶剂,5-30重量%的芳族聚酰胺和0.5-5重量%的芳族聚酰胺的组合物, 使得赋色性固体成分具有平均直径小于200nm的颗粒,b)通过将步骤a)中制备的预混物与包含极性非质子性有机溶剂的溶液混合来制备成型溶液 和对应于步骤a)中使用的芳族聚酰胺的芳族聚酰胺,刚好在成形模具的上游; c)通过包含预定数量和形状的孔口的成形模挤出成型溶液以产生初级纤维或膜,d )以常规方式去除极性非质子有机溶剂,以留下具有足够的机械稳定性和非粘性的溶剂稀或不含纤维以进一步加工,以及e)任选定向 以常规的方式对所得到的纤维或膜进行处理。