The invention discloses a novel high-surface electric strength polyimide composite film material which comprises a polyimide base layer and an electrostatic spinning polyimide composite nanofiber surface layer, and the electrostatic spinning polyimide composite nanofiber surface layer contains a metal compound; the thickness of the polyimide composite film material is 25-250 [mu] m. The polyimide composite film material provided by the invention is composed of the polyimide resin base layer and the electrostatic spinning polyimide composite nanofiber surface layer, the polyimide resin base layer and the electrostatic spinning polyimide composite nanofiber surface layer are finally and integrally subjected to high-temperature imidization, all the layers are bonded into a whole after chemical reaction, and the interlayer bonding force is high; the novel polyimide composite film material can maintain excellent mechanical properties, has a lower secondary electron emission coefficient, higher surface conductivity and faster surface charge dissipation capability, improves the surface electric strength of the polyimide film material in multiple ways, and meets the requirements of spacecraft manufacturing on insulating materials.

    本申请公开了一种新型高沿面耐电强度聚酰亚胺复合薄膜材料,包括聚酰亚胺基层和静电纺聚酰亚胺复合纳米纤维表层,所述静电纺聚酰亚胺复合纳米纤维表层中含有金属化合物;所述聚酰亚胺复合薄膜材料厚度为25~250μm。本申请提供的聚酰亚胺复合薄膜材料由聚酰亚胺树脂基层和静电纺聚酰亚胺复合纳米纤维表层构成,最终整体进行高温亚胺化,各层经化学反应后粘连形成一体,层间结合力强;此新型聚酰亚胺复合薄膜材料,可以在保持优异力学性能的同时,具备更低的二次电子发射系数、更高的表面电导率以及更快的表面电荷消散能力,多途径提高聚酰亚胺薄膜材料的沿面耐电强度,满足航天器制造对绝缘材料的需要。


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    Title :

    Novel polyimide composite film material with high along-surface electric strength and preparation method and application thereof


    Additional title:

    一种新型高沿面耐电强度聚酰亚胺复合薄膜材料及其制备方法和应用


    Contributors:
    ZHANG GUANJUN (author) / LI WENRUI (author) / YANG XIONG (author) / LIU HAOYAN (author) / ZOU FANGZHENG (author) / LIAN RUHUI (author) / SONG BAIPENG (author) / GAO ZHILIANG (author) / DONG YIBO (author)

    Publication date :

    2023-12-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B64G Raumfahrt , COSMONAUTICS / C08J Verarbeitung , WORKING-UP / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / D04H Herstellen von flächigem Textilgut, z.B. aus Fasern oder fadenförmigem Material , MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL / H10K



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