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    POLYIMIDE NONWOVEN FABRIC AND PROCESS FOR PRODUCTION THEREOF
    3.
    发明申请
    POLYIMIDE NONWOVEN FABRIC AND PROCESS FOR PRODUCTION THEREOF 有权
    聚酰亚胺非织造织物及其生产方法

    公开(公告)号：US20100178830A1

    公开(公告)日：2010-07-15

    申请号：US12305722

    申请日：2007-06-19

    申请人： Masahiko Nakamori ,  Satoshi Maeda ,  Tooru Kitagawa ,  Hisato Kobayashi ,  Yasuo Ohta

    发明人： Masahiko Nakamori ,  Satoshi Maeda ,  Tooru Kitagawa ,  Hisato Kobayashi ,  Yasuo Ohta

    IPC分类号： D04H1/56 ,  D04H1/72

    CPC分类号： D04H3/16 ,  D01D5/0038 ,  D01F6/74 ,  D04H1/42 ,  D04H1/4334 ,  D04H1/4382 ,  D04H1/72 ,  Y10T442/626

    摘要： A non-woven fabric which is excellent in thermal resistance, mechanical strength, and thermal dimensional stability for applications exposed to high temperature circumstance and has an extremely large surface area and exhibit an excellent filter performance is obtained. The non-woven fabric is composed of polyimide fibers which are obtained by polycondensation of at least an aromatic tetracarboxylic acid and an aromatic diamine having a benzoxazole structure and have a fiber diameter in the range of 0.001 μm to 1 μm. The non-woven fabric is obtained by the steps of preparing a polyamic acid by polycondensation of an aromatic tetracarboxylic acid and an aromatic diamine having a benzoxazole structure, and electro-spinning the polyamic acid to form a polyimide precursor non-woven fabric; and imidizing a polyimide precursor fiber bundle.

    摘要翻译： 获得了耐高温环境下使用的耐热性，机械强度和热尺寸稳定性优异，表面积极高，过滤性能优异的无纺布。 无纺布由聚酰亚胺纤维构成，该聚酰亚胺纤维通过至少一种芳香族四羧酸和具有苯并恶唑结构的芳香族二胺的缩聚得到，纤维直径在0.001μm〜1μm的范围内。 通过以下步骤获得无纺织物：通过芳族四羧酸和具有苯并恶唑结构的芳族二胺的缩聚制备聚酰胺酸，并将聚酰胺酸电纺丝以形成聚酰亚胺前体无纺织物; 并酰亚胺化聚酰亚胺前体纤维束。

    Polyimide nonwoven fabric and process for production thereof
    4.
    发明授权
    Polyimide nonwoven fabric and process for production thereof 有权
    聚酰亚胺无纺布及其制造方法

    公开(公告)号：US09394638B2

    公开(公告)日：2016-07-19

    申请号：US12305722

    申请日：2007-06-19

    申请人： Masahiko Nakamori ,  Satoshi Maeda ,  Tooru Kitagawa ,  Hisato Kobayashi ,  Yasuo Ohta

    发明人： Masahiko Nakamori ,  Satoshi Maeda ,  Tooru Kitagawa ,  Hisato Kobayashi ,  Yasuo Ohta

    IPC分类号： D04H1/72 ,  D04H3/16 ,  D01D5/00 ,  D01F6/74 ,  D04H1/42

    CPC分类号： D04H3/16 ,  D01D5/0038 ,  D01F6/74 ,  D04H1/42 ,  D04H1/4334 ,  D04H1/4382 ,  D04H1/72 ,  Y10T442/626

    摘要： A non-woven fabric which is excellent in thermal resistance, mechanical strength, and thermal dimensional stability for applications exposed to high temperature circumstance and has an extremely large surface area and exhibit an excellent filter performance is obtained. The non-woven fabric is composed of polyimide fibers which are obtained by polycondensation of at least an aromatic tetracarboxylic acid and an aromatic diamine having a benzoxazole structure and have a fiber diameter in the range of 0.001 μm to 1 μm. The non-woven fabric is obtained by the steps of preparing a polyamic acid by polycondensation of an aromatic tetracarboxylic acid and an aromatic diamine having a benzoxazole structure, and electro-spinning the polyamic acid to form a polyimide precursor non-woven fabric; and imidizing a polyimide precursor fiber bundle.

    摘要翻译： 获得了耐高温环境下使用的耐热性，机械强度和热尺寸稳定性优异，表面积极高，过滤性能优异的无纺布。 无纺布由聚酰亚胺纤维构成，该聚酰亚胺纤维通过至少一种芳香族四羧酸和具有苯并恶唑结构的芳香族二胺的缩聚得到，纤维直径在0.001μm〜1μm的范围内。 通过以下步骤获得无纺织物：通过芳族四羧酸和具有苯并恶唑结构的芳族二胺的缩聚制备聚酰胺酸，并将聚酰胺酸电纺丝以形成聚酰亚胺前体无纺织物; 并酰亚胺化聚酰亚胺前体纤维束。

    Working method for curved surface of a work and an apparatus thereof
    9.
    发明授权
    Working method for curved surface of a work and an apparatus thereof 失效
    工作曲面的工作方法及其装置

    公开(公告)号：US06752699B2

    公开(公告)日：2004-06-22

    申请号：US10245279

    申请日：2002-09-18

    申请人： Katsura Yanagisawa ,  Tsugihiko Musha ,  Hisato Kobayashi ,  Gen Sasaki ,  Koichi Takemoto

    发明人： Katsura Yanagisawa ,  Tsugihiko Musha ,  Hisato Kobayashi ,  Gen Sasaki ,  Koichi Takemoto

    IPC分类号： B24B100

    CPC分类号： B24B11/00 ,  B23H5/08 ,  B24B1/00

    摘要： The first driving shaft 2 is provided with the electric supply equipment 8 such as the metal brush. The second driving shaft 3 is as well too. Further, a nozzle 10 for supplying the conductive coolant is supplied to the grinding portion between the grinding surface 1a and the surface Wa to be ground is provided. When grinding is carried out, the conductive coolant is supplied from the nozzle 10 and by turning on the electricity to the first driving shaft 2 and the second driving shaft 3, a voltage is applied between the grinding surface 1a and the surface Wa to be ground of the work W. Due to electrolysis of that instance, the conductive material of the surface of the grindstone is dissolved in the conductive coolant, simultaneously the clogging of the grinding surface 1a is solved. Accordingly, a super ball finishing using a grindstone of the quite high grain size becomes possible.

    摘要翻译： 第一驱动轴2设置有诸如金属刷的供电设备8。 第二驱动轴3也是如此。 此外，用于供给导电性冷却剂的喷嘴10被供给到研磨面1a和被研磨面Wa之间的研磨部。 当进行研磨时，导电性冷却剂从喷嘴10供给，并通过将电力接通到第一驱动轴2和第二驱动轴3，在研磨面1a与被研磨面Wa之间施加电压 由于这种情况的电解，磨石表面的导电材料溶解在导电性冷却剂中，同时解决了研磨面1a的堵塞。 因此，可以使用具有相当高的晶粒尺寸的磨石的超球抛光。