EP4148165B1 - Method for preparing heat dissipation component with high flexibility made of graphite or graphene material - Google Patents

Method for preparing heat dissipation component with high flexibility made of graphite or graphene material Download PDF

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Publication number
EP4148165B1
EP4148165B1 EP21199008.0A EP21199008A EP4148165B1 EP 4148165 B1 EP4148165 B1 EP 4148165B1 EP 21199008 A EP21199008 A EP 21199008A EP 4148165 B1 EP4148165 B1 EP 4148165B1
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EP
European Patent Office
Prior art keywords
graphite
graphene
raw material
heat dissipation
graphene raw
Prior art date
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EP21199008.0A
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German (de)
English (en)
French (fr)
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EP4148165C0 (en
EP4148165A1 (en
Inventor
Meixing Pang
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Shenzhen Ruixi New Material Technology Co Ltd
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Shenzhen Ruixi New Material Technology Co Ltd
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/02Constructions of heat-exchange apparatus characterised by the selection of particular materials of carbon, e.g. graphite
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/54Electroplating of non-metallic surfaces
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00Electroplating: Baths therefor
    • C25D3/02Electroplating: Baths therefor from solutions
    • C25D3/38Electroplating: Baths therefor from solutions of copper
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/10Electroplating with more than one layer of the same or of different metals
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48After-treatment of electroplated surfaces

Definitions

  • the present disclosure belong to the field of preparation of parts made of a graphite or graphene material, and relates to a method for preparing a heat dissipation component with high flexibility made of a graphite or graphene material.
  • Graphite is a two-dimensional carbon nanomaterial presented with hexagonal honeycomb lattices and composed of carbon atoms in sp2 hybrid orbitals. Graphite has a very good thermal conduction performance.
  • the pure and defect-free single-layer graphite has thermal conductivity up to 5300 W/mK, and is the carbon material with the highest thermal conductivity so far, and its thermal conductivity is higher than those of a single-walled carbon nanotube (3500 W/mK) and a multi-walled carbon nanotube (3000 W/mK). When it is used as a carrier, the thermal conductivity can also reach 600 W/MK.
  • the ballistic thermal conductivity of graphite can lower the lower limit of the ballistic thermal conductivity of a carbon nanotube of unit circumference and length.
  • CN109748267 discloses a multi-pass cleaning based preparation method of a graphene heat-dissipating component.
  • the preparation method comprises the following processing steps: 1), cleaning a grapheneraw material by using ultrasonic; 2), continuing cleaning the graphene raw material by using an activator, wherein the activator comprises 10-20% of sulfuric acid, 0.05-1% of a surfactant and the balance of water; 3), continuing cleaning the graphene raw material by using deionized water; 4), electroplating the graphene raw material to form a copper layer on the surface of graphene raw material;5), continuing cleaning the copper layer-electroplated graphene raw material by using deionized water; 6), continuing to dry the copper layer-electroplated graphene raw material.
  • CN108823615 discloses a preparation method of a high-heat-conductivity nanometer copper-graphite film composite material.
  • the preparation method comprises the specific steps of: (1) chemical roughening of graphite films; (2) plasma treatment of the roughened graphite films; (3) copper electroplating of the plasma-treated graphite films; and (4) passivation of the graphite film after copper electroplating; and the high-heat-conductivity nanometer copper-graphite film composite material product is obtained through cleaning and drying after passivation.
  • CN103943281 describes a preparation method of an electric wire and cable with a copper-graphene complex phase conductive wire core.
  • the preparation method includes the steps: preparing copper sulfate, sulfuric acid, surface active agents and hydrochloric acid into copper plating liquid; adding graphene nano-sheets into the copper plating liquid to obtain electroplating liquid containing graphene; taking a phosphor copper sheet as an anode, taking a washed substrate as a cathode, placing the phosphor copper sheet and the substrate into the electroplating liquid for electroplating to obtain a plate with a copper-graphene complex phase plating layer, and rolling and drawing the plate to form the conductive wire core.
  • the conductive wire core is prepared by the aid of a copper-graphene complex phase, so that the obtained electric wire and cable is light in weight, high in mechanical strength, fine in conductivity and excellent in oxidation resistance and corrosion resistance.
  • the preparation process is simple, the performances of the conductive wire core can be controlled by adjusting an electroplating process, and controllability of the process is high.
  • An objective of the present disclosure is to provide a method for preparing a heat dissipation component with high flexibility made of a graphite or graphene material, which includes the following steps: firstly, plasma cleaning a surface of graphite or graphene, and then treating the surface of graphite or graphene with an activator compounded by sulfuric acid, an OP-10 surfactant and sodium dodecyl sulfate, so that the surface of the material has good smoothness, and it ensures a copper film layer electroplated on the surface of graphite or graphene has good binding quality and uniform, and enhances the flexibility of the prepared heat dissipation component, and the surface of the heat dissipation component is not easy to generate creases.
  • a method for preparing a heat dissipation component with high flexibility made of a graphite or graphene material including the following steps:
  • the graphite or graphene raw material is placed in a plasma cleaning machine for cleaning.
  • the activator includes the following components in percentage by weight: 12-16% of sulfuric acid, 0.05-0.5% of an OP-10 surfactant, 0.05-0.5% of sodium dodecyl sulfate, and the balance being water.
  • the activator includes the following components in percentage by weight: 15% sulfuric acid, 0.1% of the OP-10 surfactant, 0.1% of sodium dodecyl sulfate, and the balance being water.
  • the graphite or graphene raw material is subjected to the electroplating process twice with an electroplating solution, and the electroplating solution includes the following components in percentage by weight: 5% of copper ions; 14% of sulfuric acid; 0.8% of a brightener; 0.06% of an adjuvant; 0.06% of a leveling agent; and the balance being water.
  • the temperature when the graphite or graphene raw material is electroplated with the electroplating solution for the first time, the temperature is 40 celsius degrees and the time is 20 minutes; and when the graphite or graphene raw material is electroplated with the electroplating solution for the second time, the temperature is 40 celsius degrees and the time is 15 minutes.
  • the present disclosure has the following beneficial effects.
  • This example of the present disclosure provided a method for preparing a heat dissipation component with high flexibility made of a graphite or graphene material, including the following steps:
  • the step 5 it included two electroplating procedures: firstly, the graphite or graphene raw material was subjected to primary electroplating with an electroplating solution; and secondly, the graphite or graphene raw material was subjected to secondary electroplating with the electroplating solution.
  • the electroplating solution included the following components in percentage by weight: 5% of copper ions; 14% of sulfuric acid; 0.8% of a brightener; 0.06% of an adjuvant; 0.06% of a leveling agent; and the balance being water.
  • pickling could be carried out at the same time, so that the flatness of the heat dissipation component was good.
  • Example 1 Various process parameters of Example 1 were shown in the table below: Electroplating process Component name Solution concentration Temperature Time Activation sulfuric acid 15% 25°C 3 minutes Surfactant A (OP-10) 0.10% sodium dodecyl sulfate 0.10% Washing with pure water deionized water 25°C 20 seconds Pre-plating of copper Copper ions 50 g/l 40°C 20 minutes sulfuric acid 14% Additive A (brightener) 0.80% Additive B (adjuvant) 0.06% Additive C (leveling agent) 0.06% Electroplating of copper Copper ions 50 g/l 40°C 15 minutes sulfuric acid 14% Additive A (brightener) 0.80% Additive B (adjuvant) 0.06% Additive C 0.06% (leveling agent) Cleaning with pure water deionized water 25°C 20 seconds Protection 1 methyl benzotriazole 5g/l 25°C 20 seconds Protection 2 cetylpyridinium bromide 0.5g/l 25°C 20
  • This example of the present disclosure provided a method for preparing a heat dissipation component with high flexibility made of a graphite or graphene material, including the following steps:
  • the method for preparing a heat dissipation component with high flexibility made of a graphite or graphene material as provided by the aforementioned examples has the following advantages.
  • the graphite or graphene raw material is firstly placed in a plasma cleaning machine for plasma cleaning, and then the surface of graphite or graphene is treated with an activator compounded by sulfuric acid, the OP-10 surfactant and sodium dodecyl sulfate.
  • Sulphuric acid can wash away oil stains from the graphite or graphene raw material
  • the OP-10 surfactant improves the smoothness of the surface of the graphite or graphene raw material
  • sodium dodecyl sulfate increases the dispersibility of graphite or graphene and further increases the smoothness of the surface of the graphite or graphene raw material, so that the electroplated copper film layer has good binding quality and is uniform, which enhances the flexibility of the prepared heat dissipation component, and the surface of the heat dissipation component is not easy to generate creases, and the heat dissipation and acid and alkali resistance performances of the heat dissipation component are improved.
  • the graphite or graphene raw material electroplated with the copper film layer is first soaked in a 5 g/L methyl benzotriazole solution for 20-30 seconds to form a first layer of protective film on the copper film layer, and then put into a 0.5 g/L cetylpyridinium bromide solution for 20-30 seconds to form a second layer of protective film on the copper film layer, which effectively prevents the copper film layer from color changing.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Inorganic Chemistry (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Nanotechnology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
EP21199008.0A 2021-09-08 2021-09-24 Method for preparing heat dissipation component with high flexibility made of graphite or graphene material Active EP4148165B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111020365.7A CN113622007A (zh) 2021-09-08 2021-09-08 一种高柔韧性石墨材质或石墨烯材质散热部件制备方法

Publications (3)

Publication Number Publication Date
EP4148165A1 EP4148165A1 (en) 2023-03-15
EP4148165C0 EP4148165C0 (en) 2024-04-17
EP4148165B1 true EP4148165B1 (en) 2024-04-17

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EP21199008.0A Active EP4148165B1 (en) 2021-09-08 2021-09-24 Method for preparing heat dissipation component with high flexibility made of graphite or graphene material

Country Status (6)

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US (1) US20230070481A1 (ja)
EP (1) EP4148165B1 (ja)
JP (1) JP7187069B1 (ja)
KR (1) KR102631465B1 (ja)
CN (1) CN113622007A (ja)
TW (1) TWI777783B (ja)

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KR102647347B1 (ko) * 2023-05-08 2024-03-15 가드넥(주) 표면 활성화된 그라파이트 구리 도금방법

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TW201035513A (en) * 2009-03-25 2010-10-01 Wah Hong Ind Corp Method for manufacturing heat dissipation interface device and product thereof
CN102719866A (zh) * 2012-06-12 2012-10-10 河南科技学院 一种不锈钢件镀前清洗活化复合剂及其生产工艺
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Also Published As

Publication number Publication date
JP7187069B1 (ja) 2022-12-12
KR102631465B1 (ko) 2024-01-31
EP4148165C0 (en) 2024-04-17
EP4148165A1 (en) 2023-03-15
TWI777783B (zh) 2022-09-11
CN113622007A (zh) 2021-11-09
TW202311157A (zh) 2023-03-16
KR20230036941A (ko) 2023-03-15
US20230070481A1 (en) 2023-03-09
JP2023039376A (ja) 2023-03-20

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