公开(公告)号：US11629420B2

公开(公告)日：2023-04-18

申请号：US15935636

申请日：2018-03-26

Applicant: Nanotek Instruments, Inc.

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

IPC: C25D1/00 ,  C23C18/16 ,  C22C26/00 ,  C22C19/03 ,  F28F21/08 ,  C25D3/12 ,  C25D3/38 ,  B82B3/00 ,  F28F21/02 ,  C22C9/00 ,  C25D5/56 ,  C25D5/54

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.

公开(公告)号：US11420872B2

公开(公告)日：2022-08-23

申请号：US15994061

申请日：2018-05-31

Applicant: Nanotek Instruments, Inc.

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

IPC: C01B32/184 ,  C01B32/225 ,  B82Y30/00 ,  F16J15/3284 ,  B82Y40/00

Abstract: Provided is a graphene foam-based sealing material comprising: (a) a graphene foam framework comprising pores and pore walls, wherein the pore walls comprise a 3D network of interconnected graphene planes or graphene sheets; and (b) a permeation-resistant binder or matrix material that coats and embraces the exterior surfaces of the graphene foam framework and/or infiltrates into pores of the graphene foam, occupying from 10% to 100% (preferably from 10% to 98% and more preferably from 20% to 90%) of the pore volume of the graphene foam framework.

公开(公告)号：US20210114880A1

公开(公告)日：2021-04-22

申请号：US16654638

申请日：2019-10-16

Applicant: Nanotek Instruments, Inc.

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

IPC: C01B32/192 ,  C01B32/198

Abstract: Provided is a process for manufacturing a graphene material, the process comprising (a) injecting a rust stock into a first end of a continuous reactor having a toroidal vortex flow, wherein the first stock comprises graphite and a non-oxidizing liquid (or, alternatively, graphite, an acid, and an optional oxidizer) and the continuous flow reactor is configured to produce the toroidal vortex flow, enabling the formation of a reaction product suspension or slurry at the second end, downstream from the first end, of the continuous reactor; and (b) introducing the reaction product suspension/slurry from the second end back to enter the continuous reactor at or near the first end, allowing the reaction product suspension/slurry to form a toroidal vortex flow and move down to or near the second end to produce a graphene suspension or graphene oxide slurry. The process may further comprise repeating step (b) for at least one time.

公开(公告)号：US20210063098A1

公开(公告)日：2021-03-04

申请号：US16559000

申请日：2019-09-03

Applicant: Nanotek Instruments, Inc.

Inventor： Yi-jun Lin ,  Bor Z. Jang

IPC: F28F21/02

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.

公开(公告)号：US20200340756A1

公开(公告)日：2020-10-29

申请号：US16395800

申请日：2019-04-26

Applicant: Nanotek Instruments, Inc.

Inventor： Yi-jun Lin ,  Bor Z. Jang

IPC: F28D15/04 ,  H05K7/20

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.

公开(公告)号：US20200339423A1

公开(公告)日：2020-10-29

申请号：US16397295

申请日：2019-04-29

Applicant: Nanotek Instruments, Inc.

Inventor： Yi-jun Lin ,  Bor Z. Jang

IPC: C01B32/184 ,  C01B32/198 ,  C01B32/225 ,  C01B32/23 ,  H04B1/04 ,  H04B1/08

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 and the hollow structure walls comprise an evaporator wall having a first surface plane and a condenser wall having a second surface plane, wherein multiple sheets of the graphene material in the wick structure are aligned to be substantially parallel to one another and perpendicular to at least one of the first surface plane and the second surface plane. Also provided is a process for producing this apparatus.

公开(公告)号：US20200009846A1

公开(公告)日：2020-01-09

申请号：US16030221

申请日：2018-07-09

Applicant: Nanotek Instruments, Inc.

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

IPC: B32B37/18 ,  B32B5/18 ,  B32B27/06 ,  B32B38/00

Abstract: Provided is a process for producing a graphene foam laminate for use as a sealing material, the process comprising (a) providing a layer of graphene foam; and (b) laminating the layer of graphene foam with one layer of permeation-resistant polymer to form a two-layer laminate or with two layers of permeation-resistant polymer to form a three-layer laminate wherein the graphene foam layer is sandwiched between the two permeation-resistant polymer layers. The two permeation-resistant polymer layers can be the same or different in composition. The product is a new, novel, unexpected, and patently distinct class of highly conducting, elastic, thermally stable, and strong sealing materials.

公开(公告)号：US20190338146A1

公开(公告)日：2019-11-07

申请号：US15973045

申请日：2018-05-07

Applicant: Nanotek Instruments, Inc.

Inventor： Fan-Chun Meng ,  Yi-jun Lin ,  Shaio-yen Lee ,  Wen Y. Chiu ,  Aruna Zhamu ,  Bor Z. Jang

IPC: C09D5/08 ,  C09D175/04 ,  C09D175/02 ,  C09D149/00 ,  C09D163/00 ,  C23F11/173

Abstract: Provided is a graphene-based aqueous coating suspension comprising multiple graphene sheets, particles of an anti-corrosive pigment or sacrificial metal, and a waterborne binder resin dissolved or dispersed in water, 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 and wherein the coating suspension does not contain a silicate binder or microspheres dispersed therein. Also provided is an object or structure coated at least in part with such a coating.

公开(公告)号：US20190292722A1

公开(公告)日：2019-09-26

申请号：US15943044

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

IPC: D06M11/83 ,  C25D5/54 ,  C25D5/34 ,  C25D5/48 ,  D06M11/74 ,  D06M23/00 ,  C03C25/44 ,  C03C25/46

Abstract: Provided is process for producing a surface-metalized fiber, yarn, or fabric, the process comprising: (a) preparing a graphene dispersion comprising multiple graphene sheets and an optional conductive filler dispersed in a first liquid medium, which is an adhesive monomer or contains a liquid adhesive monomer or oligomer dissolved in a solvent; (b) feeding a continuous fiber, yarn, or fabric from a feeder roller into a deposition zone, wherein the graphene dispersion is dispensed to deposit the graphene sheets to a surface of the fiber, yarn, or fabric; (c) moving the graphene-coated fiber, yarn, or fabric into a metallization chamber which accommodates a plating solution therein for plating a layer of a desired metal onto the graphene-coated fiber, yarn, or fabric to obtain a surface-metalized fiber, yarn, or fabric; and (d) operating a winding roller to collect the surface-metalized fiber, yarn, or fabric.

公开(公告)号：US20190292720A1

公开(公告)日：2019-09-26

申请号：US15926474

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: D06M11/83 ,  D06M11/74 ,  D06M15/356 ,  D06M17/06 ,  D06M17/10 ,  C23C14/14 ,  C01B32/194

Abstract: Provided is surface-metalized fiber, yarn, or fabric comprising: (a) a fiber, yarn, or fabric having a surface; (b) a graphene layer having a thickness from 0.34 nm to 20 μm and comprising multiple graphene sheets and an optional conducive filler coated on or bonded to the surface, with or without using an adhesive resin, to form a graphene-coated fiber, yarn, or fabric; and (c) a metal layer comprising a plated metal deposited on the graphene-coated fiber, yarn, or fabric; wherein the graphene sheets contain single-layer or few-layer graphene sheets selected from a 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. This film exhibits a high scratch resistance, strength, hardness, electrical conductivity, thermal conductivity, light reflectivity, gloss, etc.