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公开(公告)号：US20210079282A1
公开(公告)日：2021-03-18
申请号：US16574634
申请日：2019-09-18
Applicant: Nanotek Instruments, Inc.
Inventor： Yi-jun Lin , Bor Z. Jang
Abstract: Provided is an elastic heat spreader film comprising: a) a graphitic film prepared from graphitization of a polymer film or pitch film, wherein the graphitic film has graphitic crystals parallel to one another and parallel to a film plane, having an inter-graphene spacing less than 0.34 nm, and wherein the graphitic film alone, after compression, has a thermal conductivity at least 600 W/mK, an electrical conductivity no less than 4,000 S/cm, and a physical density greater than 1.7 g/cm3; and b) an elastomer or rubber that permeates into the graphitic film from at least a surface of the film; wherein the elastomer or rubber is in an amount from 0.001% to 30% by weight based on the total heat spreader film weight. The elastic heat spreader film has a fully recoverable tensile elastic strain from 2% to 100% and an in-plane thermal conductivity from 100 W/mK to 1,750 W/mK.
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公开(公告)号：US20210060876A1
公开(公告)日：2021-03-04
申请号：US16559004
申请日：2019-09-03
Applicant: Nanotek Instruments, Inc.
Inventor： Yi-jun Lin , Bor Z. Jang
Abstract: Provided is a process for producing an elastic heat spreader film, the process comprising: (a) providing a layer of an aggregate or cluster of multiple graphene sheets; (b) impregnating an elastomer or rubber into the aggregate or cluster as a binder material or a matrix material to produce an impregnated aggregate or cluster, wherein the multiple graphene sheets are bonded by the binder material or dispersed in the matrix material and the elastomer or rubber is in an amount from 0.001% to 20% by weight based on the total heat spreader film weight; and (c) compressing the impregnated aggregate or cluster to produce the heat spreader film wherein the multiple graphene sheets are substantially aligned to be parallel to one another 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.
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公开(公告)号：US10730070B2
公开(公告)日：2020-08-04
申请号：US15914224
申请日：2018-03-07
Applicant: Nanotek Instruments, Inc.
Inventor： Yi-jun Lin , Shaio-yen Lee , Yao-de Jhong , Aruna Zhamu , Bor Z. Jang
IPC: B32B9/00 , B05D1/18 , B05D3/12 , B05D3/02 , C23C18/32 , C23C18/16 , C01B32/198 , C01B32/192 , C09D1/00 , C01B32/19 , C23C18/24 , C25D5/56 , C09D7/40 , C23C18/20 , C09D7/61 , B05D3/10 , B05D7/02 , C25D3/12 , B82Y30/00
Abstract: A continuous process for producing a surface-metalized polymer article, comprising: (a) continuously immersing a polymer article into a graphene dispersion comprising multiple graphene sheets dispersed in a liquid medium for a period of immersion time and then retreating the polymer article from the dispersion, enabling deposition of graphene sheets onto a surface of the polymer article to form a graphene-attached polymer article; (b) continuously moving the graphene-attached polymer article into a drying or heating zone to enable bonding of graphene sheets to said surface to form a graphene-covered polymer article; and (c) continuously moving the graphene-covered polymer article into a metallization zone where a layer of a metal is chemically, physically, electrochemically or electrolytically deposited onto a surface of the graphene-covered polymer article to form the surface-metalized polymer article. Step (a) may be preceded by a surface treatment of the polymer article.
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公开(公告)号：US10468152B2
公开(公告)日：2019-11-05
申请号：US13815316
申请日：2013-02-21
Applicant: Nanotek Instruments, Inc.
Inventor： Yi-jun Lin , Aruna Zhamu , Bor Z. Jang
Abstract: An optically transparent and electrically conductive film composed of metal nanowires or carbon nanotubes combined with pristine graphene with a metal nanowire-to-graphene or carbon nanotube-to-graphene weight ratio from 1/99 to 99/1, wherein the pristine graphene is single-crystalline and contains no oxygen and no hydrogen, and the film exhibits an optical transparence no less than 80% and sheet resistance no higher than 300 ohm/square. This film can be used as a transparent conductive electrode in an electro-optic device, such as a photovoltaic or solar cell, light-emitting diode, photo-detector, touch screen, electro-wetting display, liquid crystal display, plasma display, LED display, a TV screen, a computer screen, or a mobile phone screen.
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公开(公告)号：US20190292676A1
公开(公告)日：2019-09-26
申请号：US15943081
申请日：2018-04-02
Applicant: Nanotek instruments, Inc.
Inventor： Yi-jun Lin , Shaio-yen Lee , Yao-de Jhong , Aruna Zhamu , Bor Z. Jang
Abstract: Provided is process for producing a surface-metalized polymer film, the process comprising: (a) preparing a graphene dispersion comprising multiple graphene sheets and an optional conducive filler dispersed in a first liquid medium, which is an adhesive monomer/oligomer or contains a liquid adhesive monomer/oligomer/polymer dissolved in a solvent; (b) feeding a continuous polymer film from a feeder roller into a deposition zone, wherein the graphene dispersion is dispensed to deposit the graphene sheets to a surface of the polymer film; (c) moving the graphene-coated polymer film into a metallization chamber which accommodates a plating solution therein 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.
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Patent Agency Ranking
公开(公告)号：US20190210345A1
公开(公告)日：2019-07-11
申请号：US15864991
申请日：2018-01-08
Applicant: Nanotek Instruments, Inc.
Inventor： Yi-jun Lin , Aruna Zhamu , Bor Z. Jang
IPC: B32B37/00 , H01M4/66 , H01M8/0245 , B32B7/14 , H01M8/0234 , H01M8/0232 , B32B9/00 , C01B32/194 , F28F21/02
CPC classification number: B32B37/0084 , B32B7/14 , B32B9/007 , B32B2307/202 , B32B2307/302 , B32B2313/04 , B32B2457/10 , B32B2457/18 , C01B32/194 , C01B2204/22 , C01B2204/24 , F28F21/02 , H01M4/661 , H01M4/663 , H01M4/667 , H01M8/0232 , H01M8/0234 , H01M8/0245
Abstract: A process for producing a graphene paper product of metal-bonded graphene sheets, comprising: (a) preparing a graphene dispersion having discrete graphene sheets dispersed in a fluid medium, wherein the graphene sheets contain single-layer or few-layer graphene sheets selected from a pristine graphene material or a non-pristine graphene material, wherein the non-pristine graphene is selected from 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; (b) assembling the graphene sheets into a paper product containing a sheet or a roll of graphene paper; and (c) depositing a metal on surfaces of graphene sheets to bond graphene sheets together for forming the graphene paper product, which contains off-plane graphene sheets.
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公开(公告)号：US20190143656A1
公开(公告)日：2019-05-16
申请号：US15924633
申请日：2018-03-19
Applicant: Nanotek Instruments, Inc.
Inventor： Yi-jun Lin , Shaio-yen Lee , Yao-de Jhong , Aruna Zhamu , Bor Z. Jang
Abstract: Provided is a surface-metalized polymer article comprising a polymer component having a surface, a first layer of combined multiple graphene sheets and an optional conductive filler (e.g. metal nanowires or carbon nanofibers) coated on the polymer component surface, and a second layer of a plated metal deposited on the first layer, wherein the multiple graphene sheets contain single-layer or few-layer graphene, and wherein the multiple graphene sheets and conductive filler are bonded to the polymer component surface with or without an adhesive resin. In certain embodiments, this article is selected from a vehicle component, an electronic appliance, an electronic device, a food packaging film or bag, a protective clothing, an antistatic film or bag, a susceptor in microwave cooking, a blanket, an anti-reflection accessary, a toy, a product label, a mailer, a sports card, a greeting card, a solar control window film, or a stamping foil.
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公开(公告)号：US20180058782A1
公开(公告)日：2018-03-01
申请号：US15789580
申请日：2017-10-20
Applicant: Nanotek Instruments, Inc.
Inventor： Aruna Zhamu , Wei Xiong , Bor Z. Jang , Yi-jun Lin
CPC classification number: F28F21/02 , C09K5/14 , F28D2021/0029 , F28F21/00
Abstract: A unitary graphene-based integrated heat sink comprising a heat collection member (base) and at least one heat dissipation member (e.g. fins) integral to the baser, wherein the base is configured to be in thermal contact with a heat source, collects heat therefrom, and dissipates heat through the fins. The unitary graphene material is obtained from heat-treating a graphene oxide gel at a temperature higher than 100° C., 500° C., 1,250° C., or 2,000° C., and contains chemically bonded graphene molecules having inter-graphene distance of 0.3354-0.4 nm (preferably mm or cm), exhibiting a degree of graphitization preferably from 1% to 100% and a Mosaic spread value less than 0.7 (preferably no greater than 0.4). The finned heat sink may also be made from a filler-reinforced graphene matrix composite.
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公开(公告)号：US11945971B2
公开(公告)日：2024-04-02
申请号：US15973651
申请日：2018-05-08
Applicant: Nanotek Instruments, Inc.
Inventor： Fan-Chun Meng , Yi-jun Lin , Shaio-yen Lee , Wen Y. Chiu , Aruna Zhamu , Bor Z. Jang
IPC: B32B9/00 , C09D5/08 , C09D149/00 , C09D163/00 , C09D175/02 , C09D175/04 , C23F11/18 , B82Y30/00 , C08K3/04 , C08K3/08 , C08K9/04
CPC classification number: C09D5/084 , C09D149/00 , C09D163/00 , C09D175/02 , C09D175/04 , C23F11/184 , B82Y30/00 , C08K3/042 , C08K2003/0812 , C08K2003/0893 , C08K9/04 , C08K2201/011 , Y10T428/30
Abstract: Provided is a graphene-based coating suspension comprising multiple graphene sheets, thin film coating of an anti-corrosive pigment or sacrificial metal deposited on graphene sheets, and a binder resin dissolved or dispersed in a liquid medium, wherein the multiple graphene sheets contain single-layer or few-layer graphene sheets selected from a pristine graphene material having essentially zero % of non-carbon elements, or a non-pristine graphene material having 0.001% to 47% by weight of non-carbon elements wherein the non-pristine graphene is selected from 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. The invention also provides a process for producing this coating suspension. Also provided is an object or structure coated at least in part with such a coating.
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公开(公告)号：US11566852B2
公开(公告)日：2023-01-31
申请号：US16395800
申请日：2019-04-26
Applicant: Nanotek Instruments, Inc.
Inventor： Yi-jun Lin , Bor Z. Jang
Abstract: Provided is a vapor-based heat transfer apparatus (e.g. a vapor chamber or a heat pipe), comprising: a hollow structure having a hollow chamber enclosed inside a sealed envelope or container made of a thermally conductive material, a wick structure in contact with one or a plurality of walls of the hollow structure, and a working liquid within the hollow structure and in contact with the wick structure, wherein the wick structure comprises a graphene material.
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