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8 条记录 (耗时 0.017 秒)

    In-situ 4D printing of high-temperature materials
    1.
    发明授权
    In-situ 4D printing of high-temperature materials 有权

    公开(公告)号：US11858200B2

    公开(公告)日：2024-01-02

    申请号：US17500934

    申请日：2021-10-13

    申请人： City University of Hong Kong

    发明人： Jian Lu ,  Guo Liu

    IPC分类号： B33Y10/00 ,  B29C64/135 ,  B33Y80/00 ,  B29K83/00 ,  B33Y70/10

    CPC分类号： B29C64/135 ,  B33Y10/00 ,  B33Y80/00 ,  B29K2083/00 ,  B33Y70/10

    摘要： The present invention provides a method of in situ 4D printing of high-temperature materials including 3D printing a structure of an ink including a precursor. The structure is treated with controlled high energy flow to create a portion which has a different coefficient of thermal expansion/thermal shrinkage ratio. The structure is heated and the difference in the coefficient of thermal expansion creates an interface stress to cause a selected level of deformation. Alternatively, two structures with different coefficients of expansion/thermal shrinkage ratio may be printed. Thermal treatment of the two structures creates an interface stress to cause a selected level of deformation.

    System and method for four-dimensional printing of elastomer-derived ceramic structures by self-forming method
    6.
    发明授权
    System and method for four-dimensional printing of elastomer-derived ceramic structures by self-forming method 有权

    公开(公告)号：US11065781B2

    公开(公告)日：2021-07-20

    申请号：US16006924

    申请日：2018-06-13

    申请人： City University of Hong Kong

    发明人： Jian Lu ,  Guo Liu ,  Yan Zhao

    IPC分类号： B28B1/00 ,  B33Y10/00 ,  B28B11/24 ,  B33Y70/00 ,  B33Y30/00

    摘要： A system and method of constructing a 4D-printed ceramic object, the method including extruding inks including particles and polymeric patterns through a nozzle to deposit the inks to form a first elastic structure, subjecting the first elastic structure to tensile stress along at least one axis, extruding inks including particles and polymeric patterns through a nozzle to deposit the inks to form a second elastic structure provided to the first elastic structure under tensile stress, releasing the application of tensile stress from the first elastic structure to allow the first elastic structure and second elastic structure to form a 4D-printed elastomeric object, and converting the 4D-printed elastomeric object into the 4D-printed ceramic object.

    SYSTEM AND METHOD FOR FOUR-DIMENSIONAL PRINTING OF ELASTOMER-DERIVED CERAMIC STRUCTURES BY SELF-FORMING METHOD
    8.
    发明申请
    SYSTEM AND METHOD FOR FOUR-DIMENSIONAL PRINTING OF ELASTOMER-DERIVED CERAMIC STRUCTURES BY SELF-FORMING METHOD 审中-公开

    公开(公告)号：US20190381691A1

    公开(公告)日：2019-12-19

    申请号：US16006924

    申请日：2018-06-13

    申请人： City University of Hong Kong

    发明人： Jian Lu ,  Guo Liu ,  Yan Zhao

    IPC分类号： B28B1/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B28B11/24

    摘要： A system and method of constructing a 4D-printed ceramic object, the method including extruding inks including particles and polymeric patterns through a nozzle to deposit the inks to form a first elastic structure, subjecting the first elastic structure to tensile stress along at least one axis, extruding inks including particles and polymeric patterns through a nozzle to deposit the inks to form a second elastic structure provided to the first elastic structure under tensile stress, releasing the application of tensile stress from the first elastic structure to allow the first elastic structure and second elastic structure to form a 4D-printed elastomeric object, and converting the 4D-printed elastomeric object into the 4D-printed ceramic object.