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    Folded Core Based on Carbon Fiber Paper and Articles Made from Same
    12.
    发明申请
    Folded Core Based on Carbon Fiber Paper and Articles Made from Same 审中-公开
    基于碳纤维纸和相同制品的折叠芯

    公开(公告)号：US20110281080A1

    公开(公告)日：2011-11-17

    申请号：US12944814

    申请日：2010-11-12

    Applicant: Mikhail R. Levit ,  Dariusz Wlodzimierz Kawka

    Inventor： Mikhail R. Levit ,  Dariusz Wlodzimierz Kawka

    IPC: B32B1/00

    CPC classification number: B29D99/0014 ,  B31D3/00 ,  D21H13/50 ,  D21H27/22 ,  Y10T428/24628

    Abstract: This invention relates to a folded core structure made from paper comprising 20-85 weight percent of carbon fiber floc. The carbon fibers have a non-circular cross sectional aspect ratio of at least 1.5:1. The paper has a fiber volume fraction of at least 35%. The arithmetic mean length of the carbon fibers is at least 0.5 mm. and length weighted mean length at least 0.9 mm.

    Abstract translation: 本发明涉及由包含20-85重量％的碳纤维絮凝物的纸制成的折叠芯结构。 碳纤维具有至少1.5:1的非圆形横截面纵横比。 纸张的纤维体积分数至少为35％。 碳纤维的算术平均长度至少为0.5mm。 长度加权平均长度至少为0.9毫米。

    Honeycomb Core Having a High Compression Strength and Articles Made from the Same
    13.
    发明申请
    Honeycomb Core Having a High Compression Strength and Articles Made from the Same 审中-公开
    具有高抗压强度的蜂窝芯和由其制成的制品

    公开(公告)号：US20110244175A1

    公开(公告)日：2011-10-06

    申请号：US12894497

    申请日：2010-09-30

    Applicant: Rainer Kehrle ,  Yves Klett ,  Mikhail R. Levit ,  Olivier Lengwiler

    Inventor： Rainer Kehrle ,  Yves Klett ,  Mikhail R. Levit ,  Olivier Lengwiler

    IPC: B32B3/12

    CPC classification number: D21H13/26 ,  D21H27/30 ,  Y10T428/24149

    Abstract: This invention is directed to a honeycomb core structure having a high compression modulus. The core structure comprises (a) a plurality of interconnected walls having surfaces which define a plurality of honeycomb cells, wherein the cell walls are formed from a nonwoven sheet and (b) a cured resin in an amount such that the weight of cured resin as a percentage of combined weight of cured resin and nonwoven sheet is at least 62 percent. The nonwoven sheet further comprises fibers having a modulus of at least 200 grams per denier (180 grams per dtex) and a tenacity of at least 10 grams per denier (9 grams per dtex) wherein, prior to impregnating with the resin, the nonwoven sheet has an apparent density calculated from the equation Dp=K×((dr×(100−%r)/%r)/(1+dr/ds×(100−%r)/%r), where Dp is the apparent density of the sheet before impregnation, dr is the density of cured resin, ds is the density of solid material in the sheet before impregnation, % r is the cured resin content in the final core structure in weight %, K is a number with a value from 1.0 to 1.35. Further, the Gurley porosity of the nonwoven sheet before impregnation with the resin is no greater than 30 seconds per 100 milliliters. The invention is also directed to composite structures incorporating such folded core.

    Abstract translation: 本发明涉及一种具有高压缩模量的蜂窝芯结构。 核心结构包括（a）具有限定多个蜂窝单元的表面的多个互连壁，其中，细胞壁由非织造片形成，（b）固化树脂，其量使得固化树脂的重量为 固化树脂和非织造纸的组合重量的百分比至少为62％。 非织造片材还包括具有至少200克/旦尼尔（180克/分特）的模量和至少10克/旦尼尔（9克/分特）的强度的纤维，其中在用树脂浸渍之前，将非织造纸 具有从公式Dp = K×（（dr×（100-％r）/％r）/（1 + dr / ds×（100-％r）/％r））计算出的表观密度，其中Dp是表观密度 浸渍前的片材密度，dr是固化树脂的密度，ds是浸渍前的片材中固体材料的密度，％r是最终芯结构中固化树脂含量的重量％，K是具有 此外，用树脂浸渍之前的非织造纸片的Gurley孔隙率不超过每100毫升30秒。本发明还涉及包含这种折叠芯的复合结构。

    ELECTROCONDUCTIVE ARAMID PAPER AND TAPE MADE THEREFROM
    14.
    发明申请
    ELECTROCONDUCTIVE ARAMID PAPER AND TAPE MADE THEREFROM 有权
    电导式ARAMID PAPER和TAPE MUDE THEREFROM

    公开(公告)号：US20100206502A1

    公开(公告)日：2010-08-19

    申请号：US12768987

    申请日：2010-04-28

    Applicant: Mikhail R. Levit

    Inventor： Mikhail R. Levit

    IPC: D21H13/26

    CPC classification number: D21H13/26 ,  D21H13/50

    Abstract: This invention relates to a tape made from an aramid paper, and a process for making the paper, the papers comprising 5 to 65 parts by weight aramid fiber, 30-90 parts by weight aramid fibrids, and 1-20 parts by weight of conductive filler, based on the total weight of the aramid fiber, fibrids, and filler; the paper having an apparent density of not more than 0.43 g/cm3 and a tensile index not less than 60 Nm/g.

    Abstract translation: 本发明涉及由芳族聚酰胺纸制成的带材及其制造方法，该纸包括5-65重量份芳族聚酰胺纤维，30-90重量份芳族聚酰胺纤维素和1-20重量份导电 填料，基于芳族聚酰胺纤维，纤条体和填料的总重量; 该纸的表观密度不超过0.43g / cm 3，拉伸指数不小于60Nm 3 / g。

    Honeycomb from paper having a high melt point thermoplastic fiber
    15.
    发明授权
    Honeycomb from paper having a high melt point thermoplastic fiber 有权
    具有高熔点热塑性纤维的纸的蜂窝状

    公开(公告)号：US07771810B2

    公开(公告)日：2010-08-10

    申请号：US11639548

    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: D21H13/10 ,  B32B3/12 ,  B32B27/34 ,  B32B29/06 ,  D21H13/26 ,  D21H15/02 ,  D21H17/48 ,  D21H17/52 ,  Y10S428/902 ,  Y10T428/1303 ,  Y10T428/1352 ,  Y10T428/24149 ,  Y10T428/24165

    Abstract: This invention relates to a honeycomb including articles such as a panel or aerodynamic structure comprising matrix resin and paper, the paper comprising 50 to 80 parts by weight fibrous material having a modulus of 600 grams per denier (550 grams per dtex) or greater, 0 to 50 parts by weight powdered inorganic material, and 20 parts by weight or greater thermoplastic fiber, the improvement comprising the thermoplastic fiber is a binder for the paper and has a melting temperature above the curing temperature of the matrix resin; a glass transition temperature of greater than 100° C., and the weight average molecular weight of the thermoplastic polymer in the thermoplastic fibers changes 20% or less after being maintained for 10 minutes at the melting temperature.

    Abstract translation: 本发明涉及包括诸如面板或包括基质树脂和纸的空气动力学结构的制品的蜂窝体，所述纸包含50至80重量份的纤维材料，其模量为600克/分特（550克/分）或更高，0 至50重量份粉末状无机材料和20重量份以上的热塑性纤维，包括热塑性纤维的改进是用于纸的粘合剂，其熔融温度高于基体树脂的固化温度; 玻璃化转变温度大于100℃，热塑性纤维中的热塑性聚合物的重均分子量在熔融温度下保持10分钟后变化20％以下。

    Polyareneazole/thermoplastic pulp and methods of making same
    16.
    发明授权
    Polyareneazole/thermoplastic pulp and methods of making same 有权
    聚芳纶/热塑性纸浆及其制造方法

    公开(公告)号：US07744724B2

    公开(公告)日：2010-06-29

    申请号：US11639932

    申请日：2006-12-15

    Applicant: Achim Amma ,  Stephen D. Maloney ,  Mikhail R. Levit

    Inventor： Achim Amma ,  Stephen D. Maloney ,  Mikhail R. Levit

    IPC: D21F11/00 ,  D21H13/10

    CPC classification number: D21H13/20 ,  C04B16/0608 ,  C04B26/02 ,  C09K3/1028 ,  D21H13/14 ,  D21H13/24 ,  D21H17/35 ,  F16D69/026 ,  C04B14/042 ,  C04B14/10 ,  C04B14/36

    Abstract: The present invention relates to thermoplastic and polyareneazole pulp for use as reinforcement material in products including for example fluid sealing materials, as a processing aid including its use as a thixotrope, and as a filter material. The pulp comprises (a) irregularly shaped, thermoplastic fiber fibrous structures, (b) irregularly shaped, polyareneazole fibrous structures and (c) water, whereby thermoplastic fiber fibrils and/or stalks are substantially entangled with polyareneazole fibrils and/or stalks. The invention further relates to processes for making such thermoplastic and polyareneazole pulp.

    Abstract translation: 本发明涉及作为包括例如流体密封材料在内的增强材料用作热塑性和聚azole唑浆料，作为包括其用作触变剂的加工助剂和作为过滤材料。 纸浆包括（a）不规则形状的热塑性纤维纤维结构，（b）不规则形状的聚芳腈纤维结构和（c）水，由此热塑性纤维原纤维和/或茎基本上与聚芳纶原纤维和/或茎缠结。 本发明进一步涉及制备这种热塑性和聚芳腈浆的方法。

    PAPER COMPRISING PIPD FLOC AND PROCESS FOR MAKING THE SAME
    17.
    发明申请
    PAPER COMPRISING PIPD FLOC AND PROCESS FOR MAKING THE SAME 失效
    包含PIPD FLOC的纸张及其制造方法

    公开(公告)号：US20090250181A1

    公开(公告)日：2009-10-08

    申请号：US12084007

    申请日：2006-12-19

    Applicant: Mikhail R. Levit

    Inventor： Mikhail R. Levit

    IPC: D21H13/26 ,  D21H13/20

    CPC classification number: D21H13/26 ,  D21H15/02 ,  D21H21/18

    Abstract: The invention concerns a paper comprising polypyridobisimidazole floc having a length of from 1.0 to 15 mm, where the apparent density of the paper is from 0.1 to 0.4 g/cm3 and the tensile strength of the paper in lb/in is at least 0.000052×X*Y, where X is the volume portion of polypyridobisimidazole in the total solids of the paper in % and Y is basis weight of the paper in g/m2.

    Abstract translation: 本发明涉及一种纸，其包含长度为1.0至15mm的聚吡啶二咪唑絮体，其中纸张的表观密度为0.1至0.4g / cm 3，纸张的拉伸强度为lb / in至少为0.000052×X * Y，其中X是聚酰胺二咪唑在纸的总固体中的体积百分比，Y是纸的单位面积重量/ g。

    Pipd Paper and Components Made Therefrom
    19.
    发明申请
    Pipd Paper and Components Made Therefrom 审中-公开
    Pipd纸和组件

    公开(公告)号：US20090126887A1

    公开(公告)日：2009-05-21

    申请号：US12084005

    申请日：2006-12-19

    Applicant: Mikhail R. Levit

    Inventor： Mikhail R. Levit

    IPC: D21H13/12

    CPC classification number: D21H11/20 ,  H05K1/0366 ,  H05K2201/0278 ,  H05K2201/0293

    Abstract: The invention concerns a paper useful as an structural component, the paper comprising 20 to 100 percent by weight of polypyridobisimidazole fiber and a binder material, wherein the paper has (i) a density of 0.08 to 1.5 grams per cubic centimeter and (ii) a basis weight of from 10 to 150 grams per square meter, and the paper, when impregnated with at least 15% by weight of phenolic resin, has a specific tensile stiffness of at least 100 (N/cm)/(g/m2), wherein the weight % is based on the total weight of the paper and resin.

    Abstract translation: 本发明涉及可用作结构组分的纸，该纸包含20至100重量％的聚吡啶二咪唑纤维和粘合剂材料，其中该纸具有（i）0.08至1.5克/立方厘米的密度和（ii） 基重为10至150克/平方米，当用至少15重量％的酚醛树脂浸渍时，该纸具有至少100（N / cm）/（g / m 2）的比拉伸刚度， 其中重量％是基于纸和树脂的总重量。

    Honeycomb having a low coefficient of thermal expansion and articles made from same
    20.
    发明申请
    Honeycomb having a low coefficient of thermal expansion and articles made from same 审中-公开
    具有低热膨胀系数的蜂窝体和由其制成的物品

    公开(公告)号：US20080286522A1

    公开(公告)日：2008-11-20

    申请号：US11639467

    申请日：2006-12-15

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

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

    IPC: B32B3/12

    CPC classification number: D21H13/00 ,  B31D3/02 ,  D21H27/00 ,  Y10T428/24149

    Abstract: This invention relates to a honeycomb and articles made therefrom, the articles having cell walls provided with a structural or matrix resin, the planes of the cell walls being parallel to the Z-dimension of the honeycomb, the honeycomb cell walls comprising 5 to 35 parts by weight thermoplastic material having a melting point of from 120° C. to 350° C. and a coefficient of thermal expansion of 180 ppm/° C. or less; and 65 to 95 parts by weight of a high modulus fiber having a modulus of 525 grams per denier (480 grams per dtex) or greater and having an axial coefficient of thermal expansion of 2 ppm/° C. or less, based on the total amount of thermoplastic and high modulus fiber in the honeycomb cell walls; wherein the honeycomb has a coefficient of thermal expansion in the Z-dimension of 10 ppm/° C. or less as measured by ASTM E831.

    Abstract translation: 本发明涉及一种蜂窝及其制成的制品，该制品具有设置有结构或基体树脂的孔壁，该细胞壁的平面平行于该蜂窝体的Z-尺寸，该蜂窝状细胞壁包括5至35份 的热塑性材料，其熔点为120℃至350℃，热膨胀系数为180ppm /℃或更低; 和65〜95重量份的模量为525克/旦（480克/分）以上的高模量纤维，其轴向热膨胀系数为2ppm /℃以下，基于总计 蜂窝状细胞壁中的热塑性和高模量纤维的量; 其中，通过ASTM E831测定，所述蜂窝体的Z维度的热膨胀系数为10ppm /℃以下。

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