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    Graphene-based elastic heat spreader films
    1.
    发明授权
    Graphene-based elastic heat spreader films 有权

    公开(公告)号：US11946704B2

    公开(公告)日：2024-04-02

    申请号：US16559000

    申请日：2019-09-03

    Applicant: Nanotek Instruments, Inc.

    Inventor： Yi-jun Lin ,  Bor Z. Jang

    IPC: B32B9/00 ,  F28F21/02 ,  B82Y30/00

    CPC classification number: F28F21/02 ,  B82Y30/00 ,  Y10T428/30

    Abstract: Provided is a elastic heat spreader film comprising: (a) an elastomer or rubber as a binder material or a matrix material; and (b) multiple graphene sheets that are bonded by the binder material or dispersed in the matrix material, wherein the multiple graphene sheets are substantially aligned to be parallel to one another and wherein the elastomer or rubber is in an amount from 0.001% to 20% by weight based on the total heat spreader film weight; wherein the multiple graphene sheets contain single-layer or few-layer graphene sheets selected from pristine graphene, graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, doped graphene, chemically functionalized graphene, or a combination thereof; and wherein the elastic heat spreader film has a fully recoverable tensile elastic strain from 2% to 100% and an in-plane thermal conductivity from 200 W/mK to 1,750 W/mK.

    Continuous production of 2D inorganic compound platelets
    3.
    发明授权
    Continuous production of 2D inorganic compound platelets 有权

    公开(公告)号：US10953380B1

    公开(公告)日：2021-03-23

    申请号：US16658669

    申请日：2019-10-21

    Applicant: Nanotek Instruments, Inc.

    Inventor： Yi-jun Lin ,  Hsuan-Wen Lee ,  Aruna Zhamu ,  Bor Z. Jang

    IPC: B01J19/18 ,  C01B32/23 ,  C01B32/225

    Abstract: Provided is a process for manufacturing 2D inorganic compound platelets, the process comprising (a) preparing a first stock containing a 3D layered inorganic compound material dispersed in a liquid medium, (h) injecting the first stock into a continuous reactor having a vortex flow, (c) operating the continuous reactor to form a reaction product suspension containing 2D inorganic compound platelets dispersed in the liquid medium, and (d) separating and recovering said 2D inorganic compound platelets from said product suspension. The product suspension may be directed to flow back to the continuous director for further processing for at least another pass through the reactor, prior to step (d). The continuous reactor is preferably a Couette-Taylor reactor.

    Inorganic coating-protected unitary graphene material for concentrated photovoltaic applications
    4.
    发明授权
    Inorganic coating-protected unitary graphene material for concentrated photovoltaic applications 有权

    公开(公告)号：US10566482B2

    公开(公告)日：2020-02-18

    申请号：US13815100

    申请日：2013-01-31

    Applicant: Nanotek Instruments, Inc.

    Inventor： Aruna Zhamu ,  Mingchao Wang ,  Wei Xiong ,  Bor Z. Jang ,  Yi-jun Lin

    IPC: H01L31/052

    Abstract: This invention provides an inorganic coating-protected unitary graphene material article for concentrated photovoltaic cell heat dissipation. The article comprises at least a layer of unitary graphene material having two primary surfaces and an electrically non-conducting layer of inorganic coating deposited on at least one of the primary surfaces, wherein the unitary graphene material is obtained from heat-treating a graphene oxide gel at a heat treatment temperature higher than 100° C. and contains chemically bonded graphene molecules or chemically merged graphene planes having an inter-graphene spacing no greater than 0.40 nm, preferably less than 0.337 nm, and most preferably less than 0.3346 nm.

    METALLIZED GRAPHENE FOAM HAVING HIGH THROUGH-PLANE CONDUCTIVITY
    6.
    发明申请
    METALLIZED GRAPHENE FOAM HAVING HIGH THROUGH-PLANE CONDUCTIVITY 审中-公开

    公开(公告)号：US20190301814A1

    公开(公告)日：2019-10-03

    申请号：US15944162

    申请日：2018-04-03

    Applicant: Nanotek Instruments, Inc.

    Inventor： Yi-jun Lin ,  Aruna Zhamu ,  Bor Z. Jang

    IPC: F28D20/02 ,  C09K5/14 ,  H01M4/80 ,  H01M4/66 ,  H01M8/0243 ,  H01M8/0234 ,  H01M8/0232 ,  C01B32/192 ,  C01B32/19 ,  C01B32/194

    Abstract: A metal-bonded graphene foam product, comprising: (A) a sheet or roll of solid graphene foam, having a sheet plane and a sheet thickness direction, composed of multiple pores (cells) and pore walls, wherein said pore walls contain a pristine graphene material having less than 0.01% by weight of non-carbon elements or a non-pristine graphene material having 0.01% to 20% by weight of non-carbon elements, wherein said non-pristine graphene is selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, boron-doped graphene, nitrogen-doped graphene, chemically functionalized graphene, or a combination thereof; and (B) a metal that fills in the is bonded to graphene sheets, wherein the metal-bonded graphene foam product has a thickness-direction thermal conductivity from 10 W/mK to 800 W/mK or a thickness-direction electrical conductivity from 40 S/cm to 3,200 S/cm.

    PROCESS FOR GRAPHENE-MEDIATED METALLIZATION OF POLYMER FILMS
    7.
    发明申请
    PROCESS FOR GRAPHENE-MEDIATED METALLIZATION OF POLYMER FILMS 审中-公开

    公开(公告)号：US20190292675A1

    公开(公告)日：2019-09-26

    申请号：US15926458

    申请日：2018-03-20

    Applicant: Nanotek Instruments, Inc.

    Inventor： Yi-jun Lin ,  Shaio-yen Lee ,  Yao-de Jhong ,  Aruna Zhamu ,  Bor Z. Jang

    IPC: C25D5/54 ,  B32B27/12 ,  B32B9/00 ,  B32B15/08 ,  B32B15/14 ,  C08J7/04 ,  C08K3/04 ,  C08K3/08

    Abstract: Provided is a process for producing a surface-metalized polymer film, comprising: (a) feeding a continuous polymer film from a feeder into a graphene deposition chamber which accommodates a graphene dispersion comprising multiple graphene sheets and an optional conducive filler dispersed in a first liquid medium and an optional adhesive resin dissolved in this first liquid medium; (b) operating the graphene deposition chamber to deposit the graphene sheets and optional conductive filler to at least a primary surface of the polymer film for forming a graphene-coated polymer film; (c) moving the graphene-coated film into a metallization chamber which accommodates a plating solution for plating a layer of a desired metal onto the graphene-coated polymer film to obtain a surface-metalized polymer film; and (d) operating a winding roller to collect the surface-metalized polymer film. This film exhibits a high scratch resistance, strength, hardness, electrical conductivity, thermal conductivity, light reflectivity, gloss, etc.

    METAL MATRIX NANOCOMPOSITE CONTAINING ORIENTED GRAPHENE SHEETS AND PRODUCTION PROCESS
    8.
    发明申请
    METAL MATRIX NANOCOMPOSITE CONTAINING ORIENTED GRAPHENE SHEETS AND PRODUCTION PROCESS 审中-公开

    公开(公告)号：US20190292671A1

    公开(公告)日：2019-09-26

    申请号：US15935624

    申请日：2018-03-26

    Applicant: Nanotek Instruments, Inc.

    Inventor： Aruna Zhamu ,  Yi-jun Lin ,  Bor Z. Jang

    IPC: C25D1/00 ,  C22C26/00 ,  C22C19/03 ,  C22C9/00 ,  C23C18/16 ,  C23C18/32 ,  C25D3/12 ,  B82B3/00 ,  H05K7/20 ,  F28F21/02 ,  F28F21/08

    Abstract: Provided is a metal matrix nanocomposite comprising: (a) a metal or metal alloy as a matrix material; and (b) multiple graphene sheets that are dispersed in said matrix material, wherein said multiple graphene sheets are substantially aligned to be parallel to one another and are in an amount from 0.1% to 95% by volume based on the total nanocomposite volume; wherein the multiple graphene sheets contain single-layer or few-layer graphene sheets selected from pristine graphene, graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, doped graphene, chemically functionalized graphene, or a combination thereof and wherein the chemically functionalized graphene is not graphene oxide. The metal matrix exhibits a combination of exceptional tensile strength, modulus, thermal conductivity, and/or electrical conductivity.

    PROCESS FOR NANO GRAPHENE PLATELET-REINFORCED COMPOSITE MATERIAL
    10.
    发明申请
    PROCESS FOR NANO GRAPHENE PLATELET-REINFORCED COMPOSITE MATERIAL 审中-公开

    公开(公告)号：US20190002278A1

    公开(公告)日：2019-01-03

    申请号：US16108233

    申请日：2018-08-22

    Applicant: Nanotek Instruments, Inc.

    Inventor： Yi-jun Lin ,  Aruna Zhamu ,  Bor Z. Jang

    IPC: B82Y30/00 ,  H01L23/373

    Abstract: A process for producing a nanographene platelet-reinforced composite material having nanographene platelets or sheets (NGPs) as a first reinforcement phase dispersed in a matrix material and the first reinforcement phase occupies a weight fraction of 1-90% based on the total composite weight. Preferably, these NGPs, alone or in combination with a second reinforcement phase, are bonded by an adhesive and constitute a continuous 3-D network of electron- and phonon-conducting paths.

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