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    SELF-HEALING ELASTOMERS AND METHOD OF MAKING THE SAME
    1.
    发明公开
    SELF-HEALING ELASTOMERS AND METHOD OF MAKING THE SAME 审中-公开

    公开(公告)号：US20240228781A1

    公开(公告)日：2024-07-11

    申请号：US18559401

    申请日：2022-05-03

    申请人： OULUN YLIOPISTO

    发明人： Jarkko TOLVANEN ,  Mikko NELO ,  Jari HANNU ,  Jari JUUTI ,  Heli JANTUNEN

    IPC分类号： C08L83/06 ,  C08G77/56

    CPC分类号： C08L83/06 ,  C08G77/56 ,  C08L2205/025 ,  C08L2205/04

    摘要： The invention relates to a method for manufacturing a self-healing elastomer, comprising preparing, with respect to the total weight of the self-healing elastomer, 0.1-5 wt. % of boron trioxide (B2O3), 65-90 wt. % of hydroxyl-terminated polydimethylsiloxane (PDMS-OH), 5-30 wt. %, when measured in combined, of polysiloxane precursors, being a first composition comprising a siloxane base, and a second composition comprising a siloxane crosslinker, wherein the ratio by weight of the first composition and the second composition is 1:1 to 50:1; reacting B2O3 and PDMS-OH at an elevated temperature ranging from 60° C. to 200° C., endpoints inclusive, thereby obtaining a first mixture, mixing the first mixture with an alcohol, and then the first composition, thereby obtaining a second mixture, reacting the second mixture and the second composition, thereby obtaining the self-healing elastomer.

    SELF-HEALING ELASTOMERS AND METHOD OF MAKING THE SAME
    2.
    发明公开
    SELF-HEALING ELASTOMERS AND METHOD OF MAKING THE SAME 审中-公开

    公开(公告)号：US20240239961A1

    公开(公告)日：2024-07-18

    申请号：US18559423

    申请日：2022-05-03

    申请人： OULUN YLIOPISTO

    发明人： Jarkko TOLVANEN ,  Mikko NELO ,  Jari HANNU ,  Jari JUUTI ,  Heli JANTUNEN

    IPC分类号： C08G77/20 ,  C08K3/38

    CPC分类号： C08G77/20 ,  C08K3/38 ,  C08K2201/005 ,  C08K2201/011

    摘要： The invention relates to a method for manufacturing a self-healing elastomer, comprising preparing, with respect to the total weight of the self-healing elastomer, 0.1-5 wt. % of boron trioxide (B2O3), 65-90 wt. % of hydroxyl-terminated polydimethylsiloxane (PDMS-OH), 5-30 wt. %, when measured in combined, of polysiloxane precursors, being a first composition comprising a siloxane base, and a second composition comprising a siloxane crosslinker, wherein the ratio by weight of the first composition and the second composition is 1:1 to 50:1; homogeneously mixing B2O3, PDMS-OH, and the first composition, thereby obtaining a mixture, reacting the mixture and the second composition at an elevated temperature ranging from 60° C. to 150° C., endpoints inclusive, thereby obtaining the self-healing elastomer.

    CERAMIC COMPOSITE MATERIAL
    4.
    发明公开
    CERAMIC COMPOSITE MATERIAL 审中-公开

    公开(公告)号：US20230192553A1

    公开(公告)日：2023-06-22

    申请号：US18113432

    申请日：2023-02-23

    申请人： Oulun yliopisto

    发明人： Jari HANNU ,  Jari JUUTI ,  Heli JANTUNEN ,  Mikko NELO ,  Tuomo SIPONKOSKI ,  Hanna KÄHÄRI

    IPC分类号： C04B35/00 ,  B22F3/02 ,  C22C1/051 ,  C22C32/00 ,  B22F1/052

    CPC分类号： C04B35/00 ,  B22F3/02 ,  C22C1/051 ,  C22C32/0015 ,  B22F1/052 ,  B22F2302/25

    摘要： A process for manufacturing ceramic-metal composite material, comprises dissolving ceramic powder into water to obtain an aqueous solution of ceramic; mixing metal powder having a multimodal particle size where largest particle size is one fourth of the minimum dimension of a device, with the aqueous solution of ceramic to obtain a powder containing ceramic precipitated on the surface of metal particles; mixing the powder containing ceramic precipitated on the surface of the metal particles, with ceramic powder having a particle size below 50 μm, to obtain a powder mixture; adding saturated aqueous solution of ceramic to the powder mixture to obtain an aqueous composition containing ceramic and metal; compressing the aqueous composition to form a disc of ceramic-metal composite material containing ceramic and metal; and removing water from the ceramic-metal composite material; wherein ceramic content of the disc is 10 vol-% to 35 vol-%. Alternatively, ceramic-ceramic composite material may be manufactured.

    ELECTROCERAMIC COMPOSITE MATERIAL AND METHOD OF MANUFACTURING IT
    7.
    发明申请
    ELECTROCERAMIC COMPOSITE MATERIAL AND METHOD OF MANUFACTURING IT 有权

    公开(公告)号：US20230054481A1

    公开(公告)日：2023-02-23

    申请号：US17784254

    申请日：2020-12-10

    申请人： Oulun yliopisto

    发明人： Mikko NELO ,  Tuomo SIPONKOSKI ,  Jari JUUTI ,  Heli JANTUNEN

    IPC分类号： C04B35/462 ,  C04B35/626 ,  C04B40/02 ,  C04B41/00

    摘要： A method of manufacturing ceramic composite material comprises forming a combination of flowable metal oxide precursor (102), which is water-insoluble, and electroceramic powder (104) for covering surfaces of the electroceramic particles (500) with the metal oxide precursor (102), the electroceramic powder (104). A major fraction of the particles (500) has particle diameters within a range 50 μm to 200 μm, and a minor fraction of the particles has diameters smaller than the lower limit of said range, the major fraction having a variety of particle diameters. Then pressure 100 MPa to 500 MPa is applied to said combination, and said combination is exposed, under the pressure, to a heat treatment, which has a maximum temperature within 100° C. to 500° C. for a predefined period for forming the ceramic composite material.