[go: up one dir, main page]

WO2017171512A1 - Procédé d'impression 3d - Google Patents

Procédé d'impression 3d Download PDF

Info

Publication number
WO2017171512A1
WO2017171512A1 PCT/KR2017/003615 KR2017003615W WO2017171512A1 WO 2017171512 A1 WO2017171512 A1 WO 2017171512A1 KR 2017003615 W KR2017003615 W KR 2017003615W WO 2017171512 A1 WO2017171512 A1 WO 2017171512A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal powder
electromagnetic field
metal
dimensional shape
slurry
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2017/003615
Other languages
English (en)
Korean (ko)
Inventor
유동우
이진규
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Chem Ltd
Original Assignee
LG Chem Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020170040973A external-priority patent/KR102056100B1/ko
Application filed by LG Chem Ltd filed Critical LG Chem Ltd
Priority to US16/089,164 priority Critical patent/US11577315B2/en
Priority to EP17775936.2A priority patent/EP3437842B1/fr
Priority to CN201780022412.7A priority patent/CN109070210B/zh
Priority to JP2018551758A priority patent/JP2019512612A/ja
Publication of WO2017171512A1 publication Critical patent/WO2017171512A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • B33Y40/10—Pre-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • B33Y40/20—Post-treatment, e.g. curing, coating or polishing

Definitions

  • the present application relates to a 3D printing method.
  • Three-dimensional (3D) printing is a variety of manufacturing processes that typically form 3D objects by stacking a series of layers of material.
  • 3D printing methods generally include stereo lithography employing ultraviolet (UV) lasers for processing photosensitive resins, inkjet printers using ultraviolet lamps for processing photosensitive resins, plastic extrusion, and liquid binder deposition.
  • UV ultraviolet
  • 3D printing can be applied to fields such as product development, data visualization, and manufacturing and manufacturing of specialized fields.
  • Applicable fields include architecture, architecture (AEC), industrial design, automotive, aerospace, engineering, dental and medical industries, biotechnology (human replenishment), fashion, footwear, jewelry, eyewear, education, geographic information. It is versatile, including systems, food or many other fields.
  • an object of the present invention is to provide a 3D printing method capable of forming a precise three-dimensional shape to have various properties.
  • the 3D printing method of the present application includes applying an electromagnetic field to a three-dimensional shape formed by using a metal powder containing a specific conductive metal or a slurry containing the conductive metal or metal powder.
  • the formation of the three-dimensional shape and the application of the electromagnetic field to the three-dimensional shape may be performed simultaneously or may be performed with a time difference.
  • the three-dimensional shaping using the metal powder or slurry proceeds in the electromagnetic field, or the three-dimensional shape is formed after the metal powder or slurry is at least via the electromagnetic field, or once the three-dimensional shape is formed.
  • the electromagnetic field can then be applied to the three-dimensional shape.
  • the conductive metal may generate heat by induction heating in an electromagnetic field.
  • the metal powder when the particle diameter or form of the metal powder, the intensity of the electromagnetic field, the formation method of the three-dimensional shape, etc. are controlled, the metal powder may be melted in a state suitable for maintaining the three-dimensional shape, and thus melted to be the three-dimensional shape. It can be sintered in the state maintained.
  • a metal powder or a slurry containing the same as the material of the three-dimensional embodiment it is possible to implement a more precise, fine form as desired, it is possible to proceed quickly to form the three-dimensional shape.
  • the method of forming the three-dimensional shape using the metal powder or the slurry in the above is not particularly limited, and, for example, injection or discharge method may be applied.
  • the metal powder used in the present application may be in powder form and contain metal as a main component.
  • the main component of the metal is that the proportion of the metal is 55% by weight, 60% by weight, 65% by weight, 70% by weight, 75% by weight, 80% by weight, 85% by weight based on the total weight. It refers to the case of at least%, at least 90% by weight or at least 95% by weight.
  • the upper limit of the ratio of the metal contained as the main component is not particularly limited, and may be, for example, about 100% by weight, 99% by weight or 98% by weight.
  • the metal powder may include at least a metal having a predetermined relative permeability and conductivity. Through the application of these metals, the metal powder or slurry in the electromagnetic field can be melted and sintered to an appropriate level.
  • the relative permeability ( ⁇ r ) is the ratio ( ⁇ / ⁇ 0 ) of the permeability ( ⁇ ) of the material to the permeability ( ⁇ 0 ) in the vacuum.
  • the metal has relative permeability of 95 or more, 100 or more, 110 or more, 120 or more, 130 or more, 140 or more, 150 or more, 160 or more, 170 or more, 180 or more, 190 or more, 200 or more, 210 or more, 220 or more, 230 or more Over 240, over 250, over 260, over 270, over 280, over 290, over 300, over 310, over 320, over 330, over 340, over 350, over 360, over 370, over 380, over 390, over 400 410 or more, 420 or more, 430 or more, 440 or more, 450 or more, 460 or more, 470 or more, 480 or more, 490 or more, 500 or more, 510 or more, 520 or more, 530 or more, 540 or more, 550 or more, 560 or more, At least 570, at least 580, or at least 590.
  • the upper limit of the relative permeability may be, for example, about 300,000 or less.
  • the metal may be a conductive metal.
  • the term conductive metal has a conductivity at 20 ° C. of at least about 8 MS / m, at least 9 MS / m, at least 10 MS / m, at least 11 MS / m, at least 12 MS / m, at least 13 MS / m or 14.5 MS / It may mean a metal that is m or more or such an alloy.
  • the upper limit of the conductivity is not particularly limited, but the conductivity may be, for example, about 30 MS / m or less, 25 MS / m or less, or 20 MS / m or less for controlling the degree of heat generation in the electromagnetic field. .
  • the metal having the relative permeability and conductivity as described above may simply be referred to as a conductive magnetic metal.
  • the conductive magnetic metal By applying the conductive magnetic metal, melting and sintering under an electromagnetic field can be effectively performed.
  • a metal nickel, iron or cobalt may be exemplified, but is not limited thereto.
  • the shape of the conductive magnetic metal may also be variously controlled and may be selected to be suitable for the implementation of the three-dimensional shape.
  • the conductive magnetic metal may be a particle, and the particle may have a spherical shape, a flake shape, an ellipsoidal shape, a needle type, or a dendrite type. In this form, while melting and sintering effectively in the electromagnetic field, it is possible to form the desired three-dimensional shape well.
  • the metal powder may include a second metal different from the metal with the conductive magnetic metal, if necessary.
  • the three-dimensional shape may be formed of a metal alloy.
  • the second metal a metal having a relative permeability and / or conductivity in the same range as the above-mentioned conductive magnetic metal may be used, and a metal having a relative permeability and / or conductivity outside such range may be used.
  • 1 type may be included in a 2nd metal and 2 or more types may be included.
  • the kind of the second metal is not particularly limited as long as it is different from the conductive magnetic metal to which it is applied.
  • metals other than the conductive magnetic metal may be applied in magnesium, but the present invention is not limited thereto.
  • the metal powder may include components other than the metal, if necessary, in addition to the metal components such as the conductive magnetic metal and the second metal.
  • a component various ceramic materials or Si-based polymers may be exemplified, but is not limited thereto.
  • the proportion of the conductive magnetic metal in the metal powder is not particularly limited.
  • the ratio can be adjusted to generate adequate Joule heat in the electromagnetic field.
  • the metal powder may include 30 wt% or more of the conductive magnetic metal based on the weight of the entire metal powder.
  • the ratio of the conductive magnetic metal in the metal powder is at least about 35 wt%, at least about 40 wt%, at least about 45 wt%, at least about 50 wt%, at least about 55 wt%, at least 60 wt%, Or at least 65 weight percent, at least 70 weight percent, at least 75 weight percent, at least 80 weight percent, at least 85 weight percent, or at least 90 weight percent.
  • the upper limit of the ratio of the conductive magnetic metal is not particularly limited.
  • the ratio of the conductive magnetic metal in the metal powder may be less than about 100 wt% or less than 95 wt%.
  • the ratio is an exemplary ratio.
  • the ratio since the heat generated by induction heating by the application of the electromagnetic field can be adjusted according to the strength of the applied electromagnetic field, the electrical conductivity and resistance of the metal, the ratio may be changed according to specific conditions.
  • the metal powder may also be selected in consideration of the melting and sintering efficiency and the formation efficiency of the three-dimensional shape, for example, may have a shape described in the conductive magnetic metal particles.
  • the metal powder may have a particle size in a suitable range.
  • the metal powder may have a Particle Size Distribution 50% particle size (D50) in the range of about 100 nm to about 100 ⁇ m.
  • the 50% particle size (D50) is, in another example, about 200 nm or more, about 400 nm or more, about 600 nm or more, about 800 nm or more, about 1,000 nm or more, about 1,500 nm or more, about 2,000 nm or more, about 2,500 nm At least about 3,000 nm, at least about 3,500 nm, at least about 4,000 nm, at least about 4,500 nm, at least about 5,000 nm or at least about 5,500 nm.
  • the average particle diameter may be about 90 ⁇ m or less, 80 ⁇ m or less, 70 ⁇ m or less, 60 ⁇ m or less, 50 ⁇ m or less, 40 ⁇ m or less, 30 ⁇ m or less, 20 ⁇ m or less, 15 ⁇ m or less, or 10 ⁇ m or less.
  • D50 50% particle size
  • the three-dimensional shape may be formed using the metal powder or, if necessary, the metal powder may be prepared in the form of a slurry, and may be formed using this slurry. It is possible to form a three-dimensional shape by spraying such a metal powder or slurry using, for example, an inkjet printer or other spraying means.
  • the metal powder may be mixed with a binder to prepare as a slurry. Therefore, the slurry may include a binder together with the metal powder.
  • the kind of binder that can be applied in the present application is not particularly limited.
  • the binder for example, alkyl cellulose, polyalkylene carbonate, polyalkylene oxide, lignin or polyvinyl alcohol-based binder can be used.
  • the alkyl cellulose for example, an alkyl cellulose having an alkyl group having 1 to 20 carbon atoms, 1 to 16 carbon atoms, 1 to 12 carbon atoms, 1 to 8 carbon atoms or 1 to 4 carbon atoms such as methyl cellulose or ethyl cellulose may be used.
  • polyalkylene oxide examples include an alkylene group having 1 to 20 carbon atoms, 1 to 16 carbon atoms, 1 to 12 carbon atoms, 1 to 8 carbon atoms or 1 to 4 carbon atoms such as polyethylene oxide or polypropylene oxide.
  • the polyalkylene oxide may be exemplified.
  • polyalkylene carbonate examples include an alkylene group having 1 to 20 carbon atoms, 1 to 16 carbon atoms, 1 to 12 carbon atoms, 1 to 8 carbon atoms, or 1 to 4 carbon atoms such as polyethylene carbonate.
  • Polyalkylene carbonate and the like can be exemplified, polyvinyl alcohol-based binder, polyvinyl alcohol or polyvinylacetate and the like This may be illustrated, but is not limited thereto.
  • the slurry may include the binder in a ratio of about 5 to 200 parts by weight based on 100 parts by weight of the metal powder.
  • the binder is about 190 parts by weight or less, 180 parts by weight or less, 170 parts by weight or less, 160 parts by weight or less, 150 parts by weight or less, 140 parts by weight or less, 130 parts by weight or less, 120 parts by weight or less It may be up to 100 parts by weight, up to 90 parts by weight, up to 80 parts by weight, up to 70 parts by weight, up to 60 parts by weight, up to 50 parts by weight, up to 40 parts by weight or up to 30 parts by weight. In this range, the physical properties such as the viscosity of the slurry and the degree of dispersion of the metal powder can be controlled to be suitable for 3D printing.
  • the slurry may contain known additives which are additionally required in addition to the above-mentioned components.
  • additives may include, but are not limited to, a solvent or a dispersant.
  • the three-dimensional shape may be formed in the electromagnetic field using the slurry or the metal powder as described above, or the three-dimensional shape may be formed after passing the metal powder or slurry in the electromagnetic field.
  • the conductive magnetic metal generates heat under an electromagnetic field, whereby a three-dimensional shape can be formed by sintering.
  • the manner can be advanced only by induction heating by the electromagnetic field or by applying appropriate heat.
  • the conductive magnetic metal When the conductive magnetic metal is maintained in the electromagnetic field, eddy currents are generated in the metal, and joule heating is generated by the resistance of the metal.
  • this phenomenon can be applied to 3D printing.
  • the above-mentioned metal powder or slurry may be used to implement a three-dimensional shape in an electromagnetic field to melt and sinter it, or a three-dimensional shape may be formed using a metal powder or slurry properly melted through the electromagnetic field. have. In the present application, such a method may be applied to form a precise three-dimensional shape in a short time.
  • a method of spraying the metal powder or the like on an area where an electromagnetic field is formed by a coil or the like using an appropriate jet nozzle such as an inkjet nozzle, or the method of spraying the metal powder under an electromagnetic field by winding a coil or the like on the spray nozzle, etc. can be applied.
  • the electromagnetic field may be formed by applying a current of about 100A to about 1,000A, for example.
  • the magnitude of the applied current may be 900 A or less, 800 A or less, 700 A or less, 600 A or less, 500 A or less, or 400 A or less.
  • the magnitude of the current may be about 150 A or more, about 200 A or more, or about 250 A or more.
  • the electromagnetic field may be formed, for example, at a frequency of about 100 kHz to 1,000 kHz.
  • the frequency may be 900 kHz or less, 800 kHz or less, 700 kHz or less, 600 kHz or less, 500 kHz or less, or 450 kHz or less.
  • the frequency may, in another example, be at least about 150 kHz, at least about 200 kHz, or at least about 250 kHz.
  • the holding time of the metal powder or slurry under the electromagnetic field formed in the above manner is not particularly limited, and may be selected in consideration of melting to sintering efficiency and holding ability of three-dimensional shape.
  • the holding time can be adjusted within the range of about 1 minute to 10 hours.
  • the holding time is, in another example, about 9 hours or less, about 8 hours or less, about 7 hours or less, about 6 hours or less, about 5 hours or less, about 4 hours or less, about 3 hours or less, about 2 hours or less, about Up to 1 hour or up to about 30 minutes.
  • induction heating conditions i.e., electromagnetic field forming conditions or holding time therein, may be changed in consideration of the particle diameter or form of the metal powder, the composition of the slurry including the same, and the like.
  • Melting or sintering of the metal powder or the like in the 3D printing may be performed only by the above-described induction heating, or, if necessary, while applying appropriate heat with the induction heating, that is, application of an electromagnetic field.
  • FIG. 1 is a photograph of a three-dimensional shape obtained in Example 1.
  • a slurry was prepared by dispersing 2 g of nickel powder (spherical, particle size 50% particle size (D50): about 7 to 8 ⁇ m) and 0.2 g of ethyl cellulose in 5 g of methylene chloride.
  • the nickel powder has a conductivity of about 14.5 MS / m at 20 ° C. and a relative permeability of about 600.
  • the slurry was discharged using a dispenser to form a three-dimensional shape (linear shape), and the three-dimensional shape was fired by applying an electromagnetic field to the three-dimensional shape.
  • the electromagnetic field was formed by applying a current of 200 A at a frequency of about 350 kHz, and maintained a three-dimensional shape in the electromagnetic field for about 30 seconds.
  • a solid shape was formed in the same manner as in Example 1 except that a nickel powder having a needle shape instead of a spherical nickel powder and having a major axis length of about 10 ⁇ m was used, and an electromagnetic field was applied.
  • a dendrite was used in place of the spherical nickel powder, and a three-dimensional shape was formed in the same manner as in Example 1 except that a nickel powder having a long axis of about 8 ⁇ m was used and the amount of ethyl cellulose was changed to 1 g. And an electromagnetic field was applied.
  • the iron powder has a conductivity of about 13 MS / m and a relative permeability of about 100,000 at 20 ° C.
  • a slurry was prepared by dispersing 2 g of iron (Fe) powder (spherical, particle size 50% particle size (D50): about 6 to 8 ⁇ m) and 0.5 g of methyl cellulose in 5 g of water. Formed. Thereafter, an electromagnetic field was applied to the three-dimensional shape step by step to fire. In the three-dimensional shape, an electromagnetic field formed by applying a current of 100 A at a frequency of 200 kHz is applied for 10 seconds and an electromagnetic field formed by applying a 300 A current at a frequency of 350 kHz for 30 seconds, and a current of 500 A is applied at a frequency of 380 kHz for 30 seconds. And the applied electromagnetic fields were sequentially applied for 10 seconds.
  • Fe iron
  • D50 particle size 50% particle size
  • the cobalt (Co) powder Particle Size Distribution 50% particle size (D50): about 10 to 14 ⁇ m
  • a three-dimensional shape was formed in the same manner as in Example 6, and an electromagnetic field was applied.
  • the cobalt powder has a relative permeability of about 280 at 20 ° C.
  • Nickel wire (diameter: about 0.15 mm) was repeatedly discharged onto the substrate while passing through the solenoid coils 300A and 370 kHz to form a three-dimensional shape (linear shape) in the same manner as in Example 1.
  • the nickel wire passing through the solenoid coil was laminated in multiple layers, the adhesion between the layers was not sufficiently secured, and the portions not attached were also confirmed, and the distinction between the layers was reliably recognized.
  • Example 1 Can be formed up to 10 ⁇ m width Passed Passed Passed Passed Passed Passed Example 2 Failed Passed Passed Passed Example 3 Failed Passed Passed Passed Example 4 Failed Passed Passed Passed Example 5 Failed Passed Passed Passed Example 6 Passed Passed Passed Passed Example 7 Failed Passed Passed Passed Example 8 Failed Failed Passed Passed Passed Comparative Example 1 It is impossible to form with 10 ⁇ m width and 50 ⁇ m width Not measurable Not measurable Passed Passed

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)

Abstract

La présente invention concerne un procédé d'impression 3D. La présente invention, qui est un procédé d'impression 3D efficace, peut fournir un procédé d'impression 3D qui peut, par exemple, produire plus rapidement et plus efficacement une forme tridimensionnelle ayant un rendu précis même de parties minuscules.
PCT/KR2017/003615 2016-04-01 2017-04-03 Procédé d'impression 3d Ceased WO2017171512A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US16/089,164 US11577315B2 (en) 2016-04-01 2017-04-03 3D printing method
EP17775936.2A EP3437842B1 (fr) 2016-04-01 2017-04-03 Procédé d'impression 3d
CN201780022412.7A CN109070210B (zh) 2016-04-01 2017-04-03 3d打印方法
JP2018551758A JP2019512612A (ja) 2016-04-01 2017-04-03 ３ｄプリンティング方法

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20160040360 2016-04-01
KR10-2016-0040360 2016-04-01
KR1020170040973A KR102056100B1 (ko) 2016-04-01 2017-03-30 3d 프린팅 방법
KR10-2017-0040973 2017-03-30

Publications (1)

Publication Number Publication Date
WO2017171512A1 true WO2017171512A1 (fr) 2017-10-05

Family

ID=59966179

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2017/003615 Ceased WO2017171512A1 (fr) 2016-04-01 2017-04-03 Procédé d'impression 3d

Country Status (1)

Country Link
WO (1) WO2017171512A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070241482A1 (en) * 2006-04-06 2007-10-18 Z Corporation Production of three-dimensional objects by use of electromagnetic radiation
US20090302029A1 (en) * 2006-12-05 2009-12-10 University Of Florida Research Foundation, Inc. Systems and methods based on radiation induced heating or ignition of functionalized fullerenes
KR20140038483A (ko) * 2011-07-13 2014-03-28 누보트로닉스, 엘.엘.씨 전자 및 기계 구조체들을 제조하는 방법들
JP2015133416A (ja) * 2014-01-14 2015-07-23 大同特殊鋼株式会社 電磁波吸収体及びその製造方法
US20150352785A1 (en) * 2013-03-15 2015-12-10 3D Systems, Inc. Direct Writing For Additive Manufacturing Systems

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070241482A1 (en) * 2006-04-06 2007-10-18 Z Corporation Production of three-dimensional objects by use of electromagnetic radiation
US20090302029A1 (en) * 2006-12-05 2009-12-10 University Of Florida Research Foundation, Inc. Systems and methods based on radiation induced heating or ignition of functionalized fullerenes
KR20140038483A (ko) * 2011-07-13 2014-03-28 누보트로닉스, 엘.엘.씨 전자 및 기계 구조체들을 제조하는 방법들
US20150352785A1 (en) * 2013-03-15 2015-12-10 3D Systems, Inc. Direct Writing For Additive Manufacturing Systems
JP2015133416A (ja) * 2014-01-14 2015-07-23 大同特殊鋼株式会社 電磁波吸収体及びその製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3437842A4 *

Similar Documents

Publication Publication Date Title
KR102056100B1 (ko) 3d 프린팅 방법
US7771627B2 (en) Conductive composition
DE69516252T2 (de) Schmiermittel enthaltende ferromagnetische Teilchen
CA2216683C (fr) Poudre metallique et procede de fabrication correspondant
WO2018101712A1 (fr) Procédé de production de mousse métallique
JP7194909B2 (ja) 磁性樹脂粉末、磁性プリプレグ及び磁性樹脂ペースト
TW201511034A (zh) 銅微粒子分散液、導電膜形成方法及電路板
TW201542684A (zh) 聚合物組成物、該聚合物組成物之物件及用於製備該聚合物組成物的方法
WO2018212555A1 (fr) Procédé de fabrication de caloduc
CN111755199A (zh) 复合磁性体及使用该复合磁性体的电感器
WO2014185101A1 (fr) Liquide de dispersion de fines particules de cuivre, procédé de formation de film conducteur, et carte de circuit imprimé
KR20140139015A (ko) 전도성 물질에 관한 혼합물, 방법 및 조성물
KR20140121883A (ko) 투명 도전 패턴의 제조 방법
WO2018101714A1 (fr) Procédé de production de mousse métallique
CN108687345B (zh) 一种3d打印方法
WO2018212554A1 (fr) Procédé de fabrication de mousse métallique
WO2019009672A1 (fr) Procédé de préparation de mousse métallique
WO2016178545A1 (fr) Imprimante 3d
WO2021006602A1 (fr) Procédé de préparation d'un matériau composite métal-polymère présentant des performances de dissipation thermique et d'isolation électrique élevées et matériau composite préparé par ce procédé
TW201639988A (zh) 銅粉及使用其之銅糊、導電性塗料、導電性片、以及銅粉之製造方法
WO2019059731A1 (fr) Méthode de préparation de film
WO2017171512A1 (fr) Procédé d'impression 3d
DE69120445T2 (de) Verfahren zur Erzeugung eines Wärme-Plasmas und Beschichtungsapparat unter Verwendung dieses Verfahrens
WO2018043995A1 (fr) Procédé de préparation de poudre d'argent disposant d'une surface spécifique accrue
WO2019151730A1 (fr) Noyau de ferrite et composant de bobine le comprenant

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2018551758

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2017775936

Country of ref document: EP

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17775936

Country of ref document: EP

Kind code of ref document: A1