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1.发明公开公开(公告)号：US20230304224A1
公开(公告)日：2023-09-28
申请号：US18325406
申请日：2023-05-30
发明人： Shihua WANG , Zhu Long , Mingdong Tao , Ruqiang Zhang , Tao Guo , Yongzhen Zhan , Xinglong Tang , Ling Miao , Chang Sun
摘要： Disclosed are a paper-based electromagnetic shielding composite with flame retardant properties and its preparation method and application, belonging to the technical field of electromagnetic shielding. In the present disclosure, PI fibers are modified by polydopamine and grafted with carbon nanotubes, polyimide fiber paper is prepared by a wet papermaking technology, an in-situ synthesis method is used to enable conductive MOFs and polymer PPy to grow on the fiber paper, and finally polyimide resin is sprayed onto the paper to prepare the paper-based electromagnetic shielding composite with flame retardant properties. The method is simple in process without complex synthesis equipment, and solves the problems that polyimide fiber paper is poor in paper forming property and paper mechanical property, and carbon nanotubes are easy to agglomerate in paper and limited in addition amount in the prior art. The paper-based composite has good mechanical property, heat resistance, flame retardancy and electromagnetic shielding performance.
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公开(公告)号：US12049728B2
公开(公告)日：2024-07-30
申请号：US18325422
申请日：2023-05-30
发明人： Shihua Wang , Ruqiang Zhang , Mingdong Tao , Zhu Long , Tao Guo , Yongzhen Zhan , Xinglong Tang , Ling Miao , Chang Sun
摘要： The present disclosure relates to electromagnetic shielding paper based on modification of a conductive MOF material and a preparation method thereof, and belongs to the technical field of electromagnetic shielding. The method includes the following steps: putting polyimide fibers into a precursor solution of the conductive MOF material, and reacting to obtain MOF material modified PI fibers; mixing the modified fibers with aramid pulp, and carrying out papermaking, squeezing and drying to obtain a paper-based precursor; generating a conductive polymer (polypyrrole) in situ by using a gas-phase polymerization method, and finally obtaining the electromagnetic shielding paper based on the modification of the conductive MOF material. The electromagnetic shielding paper prepared by the present disclosure not only has good conductivity and electromagnetic shielding performance, but also has good mechanical properties and thermal stability.
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3.发明公开公开(公告)号：US20230323599A1
公开(公告)日：2023-10-12
申请号：US18325422
申请日：2023-05-30
发明人： Shihua Wang , Ruqiang Zhang , Mingdong Tao , Zhu Long , Tao Guo , Yongzhen Zhan , Xinglong Tang , Ling Miao , Chang Sun
摘要： The present disclosure relates to electromagnetic shielding paper based on modification of a conductive MOF material and a preparation method thereof, and belongs to the technical field of electromagnetic shielding. The method includes the following steps: putting polyimide fibers into a precursor solution of the conductive MOF material, and reacting to obtain MOF material modified PI fibers; mixing the modified fibers with aramid pulp, and carrying out papermaking, squeezing and drying to obtain a paper-based precursor; generating a conductive polymer (polypyrrole) in situ by using a gas-phase polymerization method, and finally obtaining the electromagnetic shielding paper based on the modification of the conductive MOF material. The electromagnetic shielding paper prepared by the present disclosure not only has good conductivity and electromagnetic shielding performance, but also has good mechanical properties and thermal stability.
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