中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

69 records (took 0.019 seconds)

    Honeycomb from controlled porosity paper
    32.
    发明授权
    Honeycomb from controlled porosity paper 有权
    来自受控孔隙纸的蜂窝

    公开(公告)号：US07771811B2

    公开(公告)日：2010-08-10

    申请号：US11640045

    申请日：2006-12-15

    Applicant: Mikhail R. Levit ,  Subhotosh Khan ,  Gary Lee Hendren

    Inventor： Mikhail R. Levit ,  Subhotosh Khan ,  Gary Lee Hendren

    IPC: B32B3/12

    CPC classification number: D21H13/00 ,  D21H27/00 ,  Y10S428/902 ,  Y10T428/1303 ,  Y10T428/1352 ,  Y10T428/24149 ,  Y10T428/24165

    Abstract: This invention relates to an improved high performance honeycomb, methods for making the same, and articles including aerodynamic structures comprising the honeycomb, the honeycomb made with a paper that allows rapid impregnation of the honeycomb by structural resins while retarding excessive impregnation of node-line adhesives during manufacture. The honeycomb comprises a paper having a thickness of from 25 to 75 microns and a Gurley porosity of 2 seconds or greater and comprising high modulus fiber and thermoplastic binder having a melt point of from 180° C. to 300° C., wherein at least 30 percent by weight of the total amount of thermoplastic material is in the form of discrete film-like particles in the paper, the particles having a film thickness of about 0.1 to 5 micrometers and a minimum dimension perpendicular to that thickness of at least 30 micrometers.

    Abstract translation: 本发明涉及一种改进的高性能蜂窝体及其制造方法，以及包括蜂窝状物的蜂窝状物品的蜂窝状制品，由纸制成的蜂窝体，其能够通过结构树脂快速浸渍蜂窝体，同时延缓节点线粘合剂的过度浸渍 在制造过程中。 蜂窝体包括厚度为25至75微米的纸和2秒或更大的格利孔隙度，并且包含熔点为180℃至300℃的高模量纤维和热塑性粘合剂，其中至少 热塑性材料的总量的30重量％是纸中离散膜状颗粒的形式，该颗粒的膜厚度为约0.1至5微米，最小尺寸垂直于该厚度为至少30微米 。

    Processes for Making Sheet Structures having Improved Compression Performance
    33.
    发明申请
    Processes for Making Sheet Structures having Improved Compression Performance 审中-公开
    制造具有改进压缩性能的板材结构的工艺

    公开(公告)号：US20100122769A1

    公开(公告)日：2010-05-20

    申请号：US12615442

    申请日：2009-11-10

    Applicant: MIKHAIL R. LEVIT

    Inventor： MIKHAIL R. LEVIT

    IPC: B32B37/10 ,  B32B37/06 ,  B32B37/08

    CPC classification number: D21H13/26 ,  D04H1/4342 ,  D04H1/54 ,  D04H1/58 ,  D21H27/30 ,  D21J1/20

    Abstract: This invention relates to a process for preparing a sheet structure comprising the steps of: a) combining a plurality of plies comprising thermostable floc and at least 10 weight percent aramid fibrids, and the plies further having a void content between 25 and 95 volume percent and a moisture content of 1.5 to 7 weight percent; b) providing the combined plurality of plies to a heated press for thermal laminating the plies together, the heated press having a temperature of from 250 to 400 degrees C.; c) thermal laminating the plurality of plies in the heated press by compressing the plies at a pressure of at least 1.3 MPa while heating the plies at a temperature of from 250 to 400 degrees C. to form a sheet structure; and d) maintaining a constant pressure of at least 1.3 MPa on the sheet structure while cooling the structure to a temperature below 100 degrees C.

    Abstract translation: 本发明涉及一种用于制备片材结构的方法，包括以下步骤：a）将包含热稳定絮凝物和至少10重量％芳族聚酰胺纤条体的多个层组合，并且所述层还具有25至95体积％的空隙含量，以及 水分含量为1.5〜7重量％ b）将组合的多个帘布层提供到加热的压榨机中以将层压在一起，所述加热的压榨机的温度为250-400℃; c）在加热的压力机中通过在至少1.3MPa的压力下压制所述层，同时在250-400℃的温度下加热所述层，来热层压所述多层，以形成片状结构; 和d）在将结构冷却到低于100℃的温度下，在片材结构上保持至少1.3MPa的恒定压力。

    Fibrillated polypyridobisimidazole floc
    34.
    发明授权
    Fibrillated polypyridobisimidazole floc 有权
    纤维化聚吡啶双咪唑絮体

    公开(公告)号：US07686920B2

    公开(公告)日：2010-03-30

    申请号：US12084006

    申请日：2006-12-19

    Applicant: Mikhail R. Levit ,  Achim Amma ,  Edmund A. Merriman

    Inventor： Mikhail R. Levit ,  Achim Amma ,  Edmund A. Merriman

    IPC: D21F11/00

    CPC classification number: D21H13/20 ,  Y10T428/298

    Abstract: The invention concerns a process for making a fibrillated polypyridobisimidazole floc comprising the steps of: cutting polypyridobisimidazole filaments to an average cut length of from about 0.5 to 10 mm; and applying energy to the polypyridobisimidazole filaments to produce a fibrillated floc having essentially the same average cut length after the application of energy as before the application of energy; where the fibrillated floc having a Canadian Standard Freeness (CSF), when dispersed in water by itself, of from about 400 to 750 ml.

    Abstract translation: 本发明涉及一种制备原纤化聚吡啶二咪唑絮凝物的方法，包括以下步骤：将聚吡啶二咪唑细丝切割成平均切割长度为约0.5至10mm; 并将能量施加到聚吡啶二咪唑长丝上以产生在应用能量之前施加能量之前具有基本相同的平均切割长度的原纤化絮状物; 其中具有加拿大标准游离度（CSF）的原纤化絮状物当其自身分散在水中时为约400至750ml。

    Shaped honeycomb
    36.
    发明申请
    Shaped honeycomb 有权
    形蜂窝

    公开(公告)号：US20080145597A1

    公开(公告)日：2008-06-19

    申请号：US11639468

    申请日：2006-12-15

    Applicant: Gary Lee Hendren ,  Mikhail R. Levit ,  Subhotosh Khan

    Inventor： Gary Lee Hendren ,  Mikhail R. Levit ,  Subhotosh Khan

    IPC: B32B3/12

    CPC classification number: B31D3/0292 ,  B29D99/0089 ,  B29L2031/608 ,  B32B3/12 ,  Y10S428/902 ,  Y10T428/1303 ,  Y10T428/1352 ,  Y10T428/24149 ,  Y10T428/24165

    Abstract: This invention relates to a honeycomb comprising cells having edges forming a face of the honeycomb, the face defined by a plurality of points and having an area of curvature wherein at least two of the points are located in different tangential planes, the walls of the cells comprising 5 to 50 parts by weight thermoplastic material having a melting point of from 120° C. to 350° C., and 50 to 95 parts by weight of a high modulus fiber having a modulus of 600 grams per denier (550 grams per dtex) or greater, based on the total amount of thermoplastic material and high modulus fiber in the walls; wherein less than 25 percent of the honeycomb cells in the area of curvature have a re-entrant angle of greater than 180 degrees. This invention also relates to articles including panels and/or aerodynamic structures comprising the honeycomb.

    Abstract translation: 本发明涉及一种蜂窝体，其包括具有形成蜂窝表面的边缘的蜂窝体，所述蜂窝体由多个点限定并具有曲率区域，其中至少两个点位于不同的切向平面中， 包含5至50重量份的熔点为120℃至350℃的热塑性材料和50至95重量份的模量为600克/旦（550克/分）的高模量纤维 ）或更大，基于壁中的热塑性材料和高模量纤维的总量; 其中在曲率区域中小于25％的蜂窝状电池具有大于180度的重入角度。 本发明还涉及包括蜂窝板的面板和/或空气动力学结构的制品。

    Sheet structures having improved compression performance
    39.
    发明授权
    Sheet structures having improved compression performance 有权
    片材结构具有改进的压缩性能

    公开(公告)号：US08431213B2

    公开(公告)日：2013-04-30

    申请号：US12615447

    申请日：2009-11-10

    Applicant: Mikhail R. Levit

    Inventor： Mikhail R. Levit

    IPC: B32B27/02 ,  B32B5/02 ,  D21H13/26

    CPC classification number: D21H27/10 ,  D21H13/26 ,  Y10T428/249964

    Abstract: This invention relates to a pressboard comprising a plurality of plies having thermostable floc and at least 40 weight percent aramid fibrids, the pressboard having a final average thickness of 0.9 mm or greater, the pressboard further having an a void content of 25 volume percent or less and a ply adhesion (Y) in megapascals defined by the equation Y>2.97(X)(−0.25) wherein (X) is the thickness of the pressboard in millimeters; the pressboard can have a compressibility of 1.6 percent or less and compression set of 0.18 percent or less.

    Abstract translation: 本发明涉及一种压板，其包括具有热稳定絮状物和至少40重量％芳族聚酰胺纤条体的多个层，所述压板的最终平均厚度为0.9mm或更大，所述压板还具有25体积％以下的空隙含量 和由公式Y> 2.97（X）（ - 0.25）定义的以兆帕为单位的帘布层粘合（Y），其中（X）是压板的厚度，单位为毫米; 压板的压缩率可以为1.6％以下，压缩永久变形为0.18％以下。

Patent Agency Ranking