Patent · US10421863B2 · B2 · US

Composite reinforcing material and molding material

(11) Publication number

US10421863B2

(21) Application number

15/823,126

(22) Filing date

2017-11-27

(30) Priority date

2014-09-09

(43) Publication date

2019-09-24

(45) Date of grant

2019-09-24

(51) IPC

C01B 32/19; C01B 32/20; C01B 32/225; C04B 14/02; C04B 28/14; C04B 35/56; C04B 35/63; C04B 35/83; C08K 3/04; C08L 101/00; C09C 1/46; C09C 3/04; C09D 11/03; C09D 11/037; C09D 11/52; C09D 5/24; C09D 7/61; C10M 125/02; C10M 169/04; H01M 10/0525; H01M 4/02; H01M 4/36; H01M 4/587; H01M 4/62

(52) CPC

C01B Non-metallic elements; compounds thereof; {metalloids or compounds thereof not covered by subclass C01C}: 32/19, 32/182, 32/20, 32/205, 32/225
B82Y Specific uses or applications of nanostructures; measurement or analysis of nanostructures; manufacture or treatment of nanostructures: 30/00
C01P Indexing scheme relating to structural and physical aspects of solid inorganic compounds: 2002/72, 2002/74, 2002/77, 2004/54, 2004/61
C04B Lime, magnesia; slag; cements; compositions thereof, e.g. mortars, concrete or like building materials; artificial stone {}; ceramics; refractories; treatment of natural stone: 14/024, 2235/425, 28/14, 35/5611, 35/6303, 35/83
C08K Use of inorganic or non-macromolecular organic substances as compounding ingredients: 2201/003, 2201/004, 3/04
C08L Compositions of macromolecular compounds: 101/00, 2205/025, 2205/03, 23/12, 77/06
C09C Treatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties; preparation of carbon black {; preparation of inorganic materials which are no single chemical compounds and which are mainly used as pigments or fillers}: 1/46, 3/04
C09D Coating compositions, e.g. paints, varnishes or lacquers; filling pastes; chemical paint or ink removers; inks; correcting fluids; woodstains; pastes or solids for colouring or printing; use of materials therefor: 11/03, 11/037, 11/52, 5/24, 7/61
C10M Lubricating compositions; use of chemical substances either alone or as lubricating ingredients in a lubricating composition: 125/02, 169/04, 2201/041, 2203/003, 2203/022, 2207/401
C10N Indexing scheme associated with subclass C10M relating to lubricating compositions: 2020/06, 2030/06, 2030/10, 2040/02, 2040/04, 2040/25, 2050/10, 2230/10, 2240/10, 2250/10
H01G Capacitors; capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices of the electrolytic type: 11/22
H01M Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy: 10/052, 10/0525, 4/02, 4/366, 4/587, 4/625
Y02E Reduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution: 60/10

(73) Assignee

Graphene Platform Corp

(72) Inventors

Shoji Hasegawa; Nagisa Kamiya

(54) Title

Composite reinforcing material and molding material

(57) Abstract

A method of producing the composite reinforcing material includes a step of kneading at least a graphite-based carbon material and a reinforcing material into a base material. The graphite-based carbon material is characterized by having a rhombohedral graphite layer (3R) and a hexagonal graphite layer (2H), wherein a Rate (3R) of the rhombohedral graphite layer (3R) and the hexagonal graphite layer (2H), based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate(3 R)= P 3/(P 3+ P 4)×100 (Equation 1) wherein P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.

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Claims (10)

A composite reinforcing material comprising at least a graphene exfoliated from a graphite-based carbon material and a reinforcing material dispersed in an inorganic or metallic base material, the graphite-based carbon material having a rhombohedral graphite layer (3R) and a hexagonal graphite layer (2H), wherein a Rate (3R) of the rhombohedral graphite layer (3R) and the hexagonal graphite layer (2H), based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate(3 R)= P 3/(P 3+ P 4)×100 (Equation 1) wherein P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.
The composite reinforcing material according to claim 1, wherein the reinforcing material is a microparticle having a string-like, linear, or flake-like shape.
The composite reinforcing material according to claim 2, wherein the microparticle has an aspect ratio of 5 or more.
The composite reinforcing material according to claim 1, wherein a weight ratio of the graphite-based carbon material to the reinforcing material is 1/100 or more and less than 10.
The composite reinforcing material according to claim 2, wherein a weight ratio of the graphite-based carbon material to the reinforcing material is 1/100 or more and less than 10.
A method of producing a composite reinforcing material, comprising a step of kneading at least graphite-based carbon material and a reinforcing material into an inorganic or metallic base material, the graphite-based carbon material having a rhombohedral graphite layer (3R) and a hexagonal graphite layer (2H), wherein a Rate (3R) of the rhombohedral graphite layer (3R) and the hexagonal graphite layer (2H), based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate(3 R)= P 3/(P 3+ P 4)×100 (Equation 1) wherein P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.
The method of producing the composite reinforcing material according to claim 6, wherein the reinforcing material is a microparticle having a string-like, linear, or flake-like shape.
The method of producing the composite reinforcing material according to claim 7, wherein the microparticle has an aspect ratio of 5 or more.
The method of producing the composite reinforcing material according to claim 6, wherein a weight ratio of the graphite-based carbon material to the reinforcing material is 1/100 or more and less than 10.
The method of producing the composite reinforcing material according to claim 7, wherein a weight ratio of the graphite-based carbon material to the reinforcing material is 1/100 or more and less than 10.

Description

The present invention relates to a composite reinforcing material and a method of producing a composite reinforcing material.

In recent years, addition of various nanomaterials has been studied for purposes of downsizing and weight saving in various fields. In particular, for environmental or resource problems, carbon materials such as graphene, CNT (carbon nanotube) and fullerene have attracted attention as nonmetal nanomaterials, and a resin composite reinforcing material in which a reinforcing material (a filler) is dispersed in a resin for a purpose of improving physical properties of the resin (tensile strength, elastic modulus, etc.) has been proposed.

For example, a resin composite reinforcing material in which a carbon material such as flaked graphite is added to a thermoplastic resin such as polyolefin has been disclosed (Patent Literature 1). Further, a composite reinforcing material having flaked graphite and an inorganic filler added thereto for a purpose of improving physical properties (tensile elastic modulus, rigidity, and impact resistance) has been disclosed (Patent Literature 2 and Patent Literature 3).

Of these, graphene is superior to other carbon materials in aspect of mass productivity, handleability, etc., as well as performance, and expectations have been placed on graphene in various fields. However, when a reinforcing material such as graphene is kneaded into a resin, the reinforcing material needs to be dispersed uniformly in order to sufficiently exhibit an improvement effect of physical properties.

Citations (26)

JP2000348727A
US7071258B1
JP2009114435A
CN102015529A
WO2009147415A1
US8900486B2
JP2011522920A
JP2010254822A
CN102224623A
US20110245378A1
WO2011120008A1
JP2013533892A
WO2011162727A1
US20130102084A1
JP2013536141A
US9023308B2
JP2013079348A
US20150073082A1
WO2013146213A1
US20140378599A1
JP2013233790A
WO2014064432A1
WO2014087992A1
JP2014201676A
JP2014210916A
CN103834235A

Record as JSON

{
  "publication_number": "US10421863B2",
  "country": "US",
  "kind": "B2",
  "title": "Composite reinforcing material and molding material",
  "abstract": "A method of producing the composite reinforcing material includes a step of kneading at least a graphite-based carbon material and a reinforcing material into a base material. The graphite-based carbon material is characterized by having a rhombohedral graphite layer (3R) and a hexagonal graphite layer (2H), wherein a Rate (3R) of the rhombohedral graphite layer (3R) and the hexagonal graphite layer (2H), based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate(3 R)= P 3/(P 3+ P 4)×100 (Equation 1) wherein P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.",
  "claims": [
    "1. A composite reinforcing material comprising at least a graphene exfoliated from a graphite-based carbon material and a reinforcing material dispersed in an inorganic or metallic base material, the graphite-based carbon material having a rhombohedral graphite layer (3R) and a hexagonal graphite layer (2H), wherein a Rate (3R) of the rhombohedral graphite layer (3R) and the hexagonal graphite layer (2H), based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate(3 R)= P 3/(P 3+ P 4)×100 (Equation 1) wherein P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.",
    "2. The composite reinforcing material according to claim 1, wherein the reinforcing material is a microparticle having a string-like, linear, or flake-like shape.",
    "3. The composite reinforcing material according to claim 2, wherein the microparticle has an aspect ratio of 5 or more.",
    "4. The composite reinforcing material according to claim 1, wherein a weight ratio of the graphite-based carbon material to the reinforcing material is 1/100 or more and less than 10.",
    "5. The composite reinforcing material according to claim 2, wherein a weight ratio of the graphite-based carbon material to the reinforcing material is 1/100 or more and less than 10.",
    "6. A method of producing a composite reinforcing material, comprising a step of kneading at least graphite-based carbon material and a reinforcing material into an inorganic or metallic base material, the graphite-based carbon material having a rhombohedral graphite layer (3R) and a hexagonal graphite layer (2H), wherein a Rate (3R) of the rhombohedral graphite layer (3R) and the hexagonal graphite layer (2H), based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate(3 R)= P 3/(P 3+ P 4)×100 (Equation 1) wherein P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.",
    "7. The method of producing the composite reinforcing material according to claim 6, wherein the reinforcing material is a microparticle having a string-like, linear, or flake-like shape.",
    "8. The method of producing the composite reinforcing material according to claim 7, wherein the microparticle has an aspect ratio of 5 or more.",
    "9. The method of producing the composite reinforcing material according to claim 6, wherein a weight ratio of the graphite-based carbon material to the reinforcing material is 1/100 or more and less than 10.",
    "10. The method of producing the composite reinforcing material according to claim 7, wherein a weight ratio of the graphite-based carbon material to the reinforcing material is 1/100 or more and less than 10."
  ],
  "description_excerpt": "The present invention relates to a composite reinforcing material and a method of producing a composite reinforcing material.\n\nIn recent years, addition of various nanomaterials has been studied for purposes of downsizing and weight saving in various fields. In particular, for environmental or resource problems, carbon materials such as graphene, CNT (carbon nanotube) and fullerene have attracted attention as nonmetal nanomaterials, and a resin composite reinforcing material in which a reinforcing material (a filler) is dispersed in a resin for a purpose of improving physical properties of the resin (tensile strength, elastic modulus, etc.) has been proposed.\n\nFor example, a resin composite reinforcing material in which a carbon material such as flaked graphite is added to a thermoplastic resin such as polyolefin has been disclosed (Patent Literature 1). Further, a composite reinforcing material having flaked graphite and an inorganic filler added thereto for a purpose of improving physical properties (tensile elastic modulus, rigidity, and impact resistance) has been disclosed (Patent Literature 2 and Patent Literature 3).\n\nOf these, graphene is superior to other carbon materials in aspect of mass productivity, handleability, etc., as well as performance, and expectations have been placed on graphene in various fields. However, when a reinforcing material such as graphene is kneaded into a resin, the reinforcing material needs to be dispersed uniformly in order to sufficiently exhibit an improvement effect of physical properties.",
  "cpc": [
    "C01B 32/19",
    "B82Y 30/00",
    "C01B 32/182",
    "C01B 32/20",
    "C01B 32/205",
    "C01B 32/225",
    "C01P 2002/72",
    "C01P 2002/74",
    "C01P 2002/77",
    "C01P 2004/54",
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    "C04B 14/024",
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    "C08K 2201/003",
    "C08K 2201/004",
    "C08K 3/04",
    "C08L 101/00",
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    "C08L 2205/03",
    "C08L 23/12",
    "C08L 77/06",
    "C09C 1/46",
    "C09C 3/04",
    "C09D 11/03",
    "C09D 11/037",
    "C09D 11/52",
    "C09D 5/24",
    "C09D 7/61",
    "C10M 125/02",
    "C10M 169/04",
    "C10M 2201/041",
    "C10M 2203/003",
    "C10M 2203/022",
    "C10M 2207/401",
    "C10N 2020/06",
    "C10N 2030/06",
    "C10N 2030/10",
    "C10N 2040/02",
    "C10N 2040/04",
    "C10N 2040/25",
    "C10N 2050/10",
    "C10N 2230/10",
    "C10N 2240/10",
    "C10N 2250/10",
    "H01G 11/22",
    "H01M 10/052",
    "H01M 10/0525",
    "H01M 4/02",
    "H01M 4/366",
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    "C01B 32/19",
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    "C04B 14/02",
    "C04B 28/14",
    "C04B 35/56",
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  ],
  "assignees": [
    "Graphene Platform Corp"
  ],
  "inventors": [
    "Shoji Hasegawa",
    "Nagisa Kamiya"
  ],
  "filing_date": "2017-11-27",
  "publication_date": "2019-09-24",
  "grant_date": "2019-09-24",
  "priority_date": "2014-09-09",
  "application_number": "US-201715823126-A",
  "family_id": "52823288",
  "cited_by_count": 112,
  "citations": [
    "JP2000348727A",
    "US7071258B1",
    "JP2009114435A",
    "CN102015529A",
    "WO2009147415A1",
    "US8900486B2",
    "JP2011522920A",
    "JP2010254822A",
    "CN102224623A",
    "US20110245378A1",
    "WO2011120008A1",
    "JP2013533892A",
    "WO2011162727A1",
    "US20130102084A1",
    "JP2013536141A",
    "US9023308B2",
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    "US20150073082A1",
    "WO2013146213A1",
    "US20140378599A1",
    "JP2013233790A",
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    "WO2014087992A1",
    "JP2014201676A",
    "JP2014210916A",
    "CN103834235A"
  ]
}

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