EP2252732A1 - Strand-like material composite with cnt yarns and method for the manufacture thereof - Google Patents
Strand-like material composite with cnt yarns and method for the manufacture thereofInfo
- Publication number
- EP2252732A1 EP2252732A1 EP09717586A EP09717586A EP2252732A1 EP 2252732 A1 EP2252732 A1 EP 2252732A1 EP 09717586 A EP09717586 A EP 09717586A EP 09717586 A EP09717586 A EP 09717586A EP 2252732 A1 EP2252732 A1 EP 2252732A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cnt
- yarns
- cnt yarns
- larger diameter
- strand
- 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.)
- Withdrawn
Links
Classifications
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/441—Yarns or threads with antistatic, conductive or radiation-shielding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/02—Pretreatment of the fibres or filaments
- C22C47/025—Aligning or orienting the fibres
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/02—Pretreatment of the fibres or filaments
- C22C47/04—Pretreatment of the fibres or filaments by coating, e.g. with a protective or activated covering
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/04—Coating on selected surface areas, e.g. using masks
- C23C14/046—Coating cavities or hollow spaces, e.g. interior of tubes; Infiltration of porous substrates
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/18—Metallic material, boron or silicon on other inorganic substrates
- C23C14/185—Metallic material, boron or silicon on other inorganic substrates by cathodic sputtering
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/56—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks
- C23C14/562—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks for coating elongated substrates
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/54—Electroplating of non-metallic surfaces
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/006—Nanoparticles
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/06—Wires; Strips; Foils
- C25D7/0607—Wires
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/16—Yarns or threads made from mineral substances
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
- C22C2026/002—Carbon nanotubes
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2101/00—Inorganic fibres
- D10B2101/10—Inorganic fibres based on non-oxides other than metals
- D10B2101/12—Carbon; Pitch
- D10B2101/122—Nanocarbons
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2918—Rod, strand, filament or fiber including free carbon or carbide or therewith [not as steel]
Definitions
- the invention relates to a strand-like composite material, consisting of CNT yarns, which are coated with a metallic component.
- a strand-like composite material of the type mentioned is known from WO 2007/015710 A2.
- This string-shaped material composite is obtained as a CNT yarn in that to ⁇ next on a suitable substrate carbon nanotubes (in the To ⁇ connection referred to with this invention, briefly referred to as CNT) egg be prepared ner certain length, they are by their one end to the Substrate connected and protrude with its opposite end of this substrate, so that there is a forest-like structure.
- the CNT yarn can now be obtained by breaking off the substrate at the edge of the substrate CNT and pulling it away from the latter .
- CNT yarns are based on the properties of CNT are electrically conductive. This makes it possible to overheat the CNT yarns under by ⁇ conducting an electric current to up to 2000 K to he ⁇ other hand, it is known from US 2007/0036978 Al be ⁇ recognized that CNT electrodeposited in a. Me tall slaughter can lead to an improvement in conductivity.
- the CNT are disordered built into the electrochemical ⁇ mixed layer produced when they are dispersed in the electrolyte. the maximum achievable incorporation rates of CNT are process-related case sets limits overall.
- the object of the invention is to provide a strand-like composite material with CNT yarns and a metallic compo ⁇ nent, which has a high electrical conductivity in relation to the content of CNT in the composite material.
- the metallic component connects the adjacent CNT yarns electrically, in which case a single metallic matrix is available.
- CNT in the context of this invention is to be understood in a broader sense, all forms of carbon nanotubes. These include both the single wall carbon nanotubes (SWNT) and the so-called multiwall carbon nanotubes (MWNT), which are constructed in multiple layers.
- SWNT single wall carbon nanotubes
- MWNT multiwall carbon nanotubes
- the matrix of the metallic component is to be understood as meaning a metallic structure which represents a uniform material-technical composite. This composite can ever ⁇ but consist of several grains, the matrix is to be considered uniform over the entire cross-section through the cohesion of the metallic structure at the grain boundaries as well.
- the influence of the grain boundaries on the electrical Leitfä ⁇ ability of the matrix is in fact negligible, because the electrons, which cause a current flow migration is hardly inhibited by the grain boundaries.
- CNT yarns in the context of the invention CNT strands are ver ⁇ stand, which consist of at least one CNT fiber.
- the individual CNT adhere to each other at their ends, so that the CNT fiber can have a multiple length of the individual CNT.
- multiple CNT fibers may be joined together to form a CNT yarn. In this case, a contact may also take place between the individual CNT fibers of a yarn.
- the CNT yarns are aligned in the matrix substantially in the direction of its strand-like course.
- this has advantages in terms of production since the CNT yarns can be guided in the direction of the resulting strand-like material composite.
- the strand parallel alignment of CNT yarns also improves the electrical conductivity of the produced strand-like Mate ⁇ rialverbundes, since the paths formed by the CNT with ver ⁇ Patched electrical conductivity being aligned along the expected current flow substantially.
- the proportion of CNT yarns of the matrix is in a range of 2 to 20% by volume, preferably 4 to 10% by volume. Within this range a relatively high gain in Leitfä ⁇ ability can in fact advantageously carried out at a comparatively low use of the relatively expensive raw material for the CNT achieve in the composite conductor. In addition, when designing the composite material according to the invention, it must be taken into account that by adding the CNT into the metal
- Matrix a negative influence on the mechanical properties can be excluded or at least kept within an acceptable level.
- a material composite with a maximum of 20% by volume of CNT yarns will essentially still have the behavior of a metallic material in the case of a matrix of metallic material that is measured through the composite. This means that voltages, which occurs in particular ⁇ due to the much higher stiffness of CNT in comparison to metallic materials, by the metallic Structure can still be compensated. Also with regard to the different coefficients of thermal expansion of CNT and metallic materials arise stresses that can be compensated by the mechanism described by the metallic matrix. Here is the main difference from the strand-like material composite according to WO 2007/015710 A2 to see where the natural sheep ⁇ th are mainly determined by the subject in the composite CNT.
- the metallic component has in fact a substantially klei ⁇ Neren volume fraction of the composite, so that it can be adapted to the mechanical properties of the CNT, which determine the mechanical properties of the overall composite.
- the low volume fraction of metallic material also limits the improvement in the electrical conductivity of the composite material formed according to WO 2007/015710 A2, which is therefore only conditionally available to electrical applications.
- a particular embodiment of the invention is obtained when the CNT yarns in the matrix each comprise only one to ten fibers.
- Ver ⁇ processing of CNT yarns with only one fiber an increased manufacturing expenses, which makes the product expensive.
- This variant is therefore playing primarily in applications a role in which the optimization of the electrical characteristics in comparison to the costs is paramount (for example in the aerospace industry, which is benefiting by ⁇ average by a weight saving).
- the yarn is only or at least consists of fibers which form part of the outer circumference of the yarn concerned. This ensures that an exchange of electrons with fibers of an adjacent yarn is ensured via the intervening metallic matrix.
- the invention also relates to a method for producing a strand-like composite material, in which first CNT yarns are produced or provided and these are then surrounded with a metallic component.
- This method is described in the already mentioned WO 2007/015710 A2.
- the variant according to this document involves both the production of the CNT yarns and the subsequent coating of the same with a metallic material.
- the yarns coated in the prior art process have a very high volume fraction of CNT. The electrical conductivity of the strand-like composite materials thus produced is limited.
- Essential for the desired greatest possible increase in the conductivity of the strand-shaped composite material is that the fibers are present in the smallest possible mergers of preferably less than 10 fibers in the metallic matrix.
- a ratio can be thereby ⁇ excessively low proportion of CNT yarns in the composite material 2-20% by volume, preferably from 4 to 10% by volume, generate.
- the mechanical properties of the strand-shaped material composite can be adjusted such that they largely correspond to those of metallic microstructures.
- An advantageous embodiment of the method according to the invention is obtained when the CNT yarns and / or the CNT yarns of larger diameter are surrounded by a vacuum coating process with the metallic component.
- a vacuum coating method such as CVD or PVD, has the advantage that these coatings can be applied directly to the CNT.
- CVD or PVD has the advantage that these coatings can be applied directly to the CNT.
- CVD or PVD has the advantage that these coatings can be applied directly to the CNT.
- the CNT yarns and / or the CNT yarns size ⁇ ren diameter process by an electrochemical coating are surrounded with the metallic component.
- Electrochemical coating processes have the significant advantage over vacuum coating processes that a larger amount of material can be applied cost-effectively. Be ⁇ Sonders, when the CNT yarns and / or the CNT yarns of larger diameter be galvanically coated with the metalli ⁇ rule component, the CNT yarns and / or the CNT yarns of larger diameter ge ⁇ switched as a cathode is advantageous become.
- the electrochemical coating is generally applying an electric potential to support the coating process not ⁇ manoeuvrable (electroplating in general can also be carried out without current).
- By applying a potential to the deposition of the metallic matrix he ⁇ heights can be advantageous.
- a greater variety of metallic materials can be deposited because the deposition potential may be affected by Va ⁇ riation the applied voltage.
- the method proceeds kontinuier Lich ⁇ , wherein as many CNT yarns produced simultaneously is or to be provided as to how the strand-like composite material to be produced should contain. To ensure that all CNT yarns can be treated simultaneously and gradually merged into the after ⁇ following production steps to the desired strand-like material composite.
- the combination of the CNT yarns and / or the CNT yarns of larger diameter takes place by stranding.
- the CNT fibers of the resulting material composite are each given a helical shape by rotation about the center axis of the strand, which leads to a better cohesion, in particular during the manufacturing process.
- a particular embodiment of the method according to the invention is obtained by adjusting the volume fraction of CNT yarns in the metallic matrix by varying the duration of the manufacturing steps of surrounding the CNT yarns and the larger diameter CNT yarns with the matrix material.
- the process time of coating with the metalli ⁇ rule matrix is crucial for the layer thickness on the CNT yarns and / or the CNT yarns of larger diameter. This allows the volume fraction of the metallic
- the volume fraction of CNT yarns necessary for a desired conductivity increase or reduction of the electrical resistance is to be determined by way of example for the matrix material Cu.
- the calculation ⁇ voltage shown can of course perform equally to other matrix materials.
- the resistance of the Cu cuboid without CNT is the resistance of the Cu cuboid without CNT.
- the resistance of the square with embedded CNT results as a parallel connection of two resistors, that of the CNT, and that of the remaining Cu-cuboid (from which the cross-sectional area of the CNT-filament is subtracted)
- Such a cuboid has the CNT volume l cnt - d] nt
- the volume ratio is and is about 5- ⁇
- Figure 1 shows an embodiment of the method according to the invention as a plan view of a partially cut open production plant
- FIG. 2 to 7 different embodiments of the inventions ⁇ to the invention strand-like composite material in each case as a cross section, wherein the dargestell ⁇ th embodiments simultaneously represent different stages of production in the method of Figure 1.
- the Inventive ⁇ proper process can be performed.
- These substrates are provided on the front side shown with grown CNT.
- elementary CNT yarns 16 are removed from this CNT layer in the form of a forest, whereby a front 14 results on the substrates 11 at which the withdrawing CNT yarn is fed with new CNT.
- the CNT yarns 16 span a plurality of sputter tags 15 where they are steamed with copper. Subsequently, these are combined to form a CNT yarn of larger diameter 16a, where ⁇ this is Ki67. This CNT yarns larger diameter ⁇ 16a are rerouted via rollers 17 and is guided parallel by not shown locks 18 from the chamber vacuum 12th
- a first electrochemical bath 19a is arranged, into which the CNT yarns of larger diameter 16a enter via deflection rollers (not shown). to be led.
- a further coating of the CNT yarns of larger diameter 16a with copper takes place, wherein the amount of copper applied can be controlled by the deposition parameters in the electrochemical bath and the dimensions (double break line in FIG. 1) thereof.
- the CNT yarns of larger diameter 16a are led out of the electrochemical bath 19a and gene to two Strän- by means of further rollers 17 which form CNT yarns of greater diameter 16b, together ⁇ quantitative results.
- This CNT yarns of larger diameter 16a are introduced into a further electrochemical bath 19b where further electroplating with copper he ⁇ follows, so that the gaps between the CNT yarns of larger diameter 16a to be filled and so a the two strands respectively through metered metallic matrix in which the CNT yarns of larger diameter 16a run.
- rollers 17 are arranged, which make it possible to perform the CNT yarns of larger diameter 16b within the electrochemical ⁇ mix bath 19b.
- the CNT yarn of larger diameter 16c in the embodiment according to FIG. 1 is the end product and thus forms the strand-like material composite 21.
- This can, for example, still be provided in an unillustrated manner with an electrical connection. see insulation be provided.
- CNT yarn of larger diameter 16c to connect with other CNT yarns, in which case the diameter of the strand-shaped composite material to be produced continues to increase.
- the larger diameter CNT yarns 16a, 16b, 16c have to be switched as the cathode on which the copper is deposited.
- a roller-shaped electrode 20 is provided, through which the strand-shaped material composite 21 is guided.
- the CNT yarn is already greater diam ⁇ sers 16a sufficiently electrically conductive to transmit in the first electrochemical bath 19 to flow from the roll-shaped electrode 20th
- 19b and anodes in the electrochemical bath 19 may be provided 22 to the electrolytic coating with copper to made ⁇ lichen (electrical contacting is indicated in Figure 1).
- Figures 2 to 7 show different stages in the production of the strand-like composite material 21, wherein these are indicated in Figure 1 by the sections II-II to VII-VII ⁇ . It is clear how expectant each thicker from the CNT yarns 16 through multiple coating and combining CNT yarns 16a, 16b (16c not shown) are formed and 25 with this kom ⁇ pletely by measured matrix 25 by a last-time coating step, the strand-like material composite Copper and in this running CNT 23 arises. The individual copper layers can no longer be seen in the strand-like composite material 21 (cf., FIG. 7), since these are replaced by the repetition of the electrochemical coating steps have grown together into a single matrix 25. However, the stepwise formation of the matrix 25 can be easily recognized by the intermediate electrochemical coating steps with reference to a comparison of FIGS. 3 and 4 and FIGS. 5 and 6.
- the elementary CNT yarn 16 according to FIG. 2 consists of a strand of CNT 23, wherein a sputtering layer 24 made of copper can also be seen. Seven of these elementary CNT yarns are combined according to Figure 3 into a yarn 16a larger diameter, which can take place by an indicated rotation 26 of the resulting CNT yarn of larger diameter 16a stranding, ie that the elementary CNT yarns 16 are twisted together and helical run. Because of the engagement in Figure 4 subsequent further coating with copper, which gives rise to the 25 matrix, stranding is not absolutely necessary, however, because a cohesion of CNT yarns 16 is warranty by the tet ge ⁇ my same matrix.
- any voids 27 remain in the subsequent electroplating in the matrix 25 that are not filled with Kup ⁇ fer in Figure 4 in other respects.
- this phenomenon can be tolerated because despite these cavities, bridges 28 between the adjacent elementary yarns 16 (see FIG.
- the described phenomenon can also occur during further production during subsequent coating steps with copper, even if this is not shown in the following figures.
- FIG. 5 shows how three of the larger diameter yarns 16a according to FIG. 4 are combined and in a further electrochemical coating step according to FIG Figure 6 are combined in such manner that the unit ⁇ Liche matrix 25 is formed. Not shown is a next step of merging two larger diameter CNT yarns 16b to another larger diameter CNT yarn 16c as described in FIG. After coating this
- the coating step by sputtering according to FIG. 1 can also take place in a manner not shown after a first merging of the CNT yarns 16.
- the sputtering target should be 15 relocated only to a point after the reunification together ⁇ .
- the yarns were 16 consist according to figure 2 only from the CNT 23 and so when the CNT yarn of larger diameter 16a according to FIG 3, the CNT di ⁇ rectly come to lie on one another (according to the claim word ⁇ loud would be the elementary CNT yarn which undergoes the first Be ⁇ coating with the matrix material, composed of the yarns 16, forming the fibers of the elementary yarn CNT).
- the subsequent step according to FIG. 4 in which an electrochemical coating leads to the formation of the matrix 25 (possibly after a first coating by sputtering), the formation of bridges 28 between adjacent CNTs is nevertheless made possible.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008013518A DE102008013518A1 (en) | 2008-03-07 | 2008-03-07 | Strand-like composite material with CNT yarns and process for its production |
PCT/EP2009/052173 WO2009109485A1 (en) | 2008-03-07 | 2009-02-24 | Strand-like material composite with cnt yarns and method for the manufacture thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2252732A1 true EP2252732A1 (en) | 2010-11-24 |
Family
ID=40875019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09717586A Withdrawn EP2252732A1 (en) | 2008-03-07 | 2009-02-24 | Strand-like material composite with cnt yarns and method for the manufacture thereof |
Country Status (5)
Country | Link |
---|---|
US (1) | US20100330365A1 (en) |
EP (1) | EP2252732A1 (en) |
CN (1) | CN101960061B (en) |
DE (1) | DE102008013518A1 (en) |
WO (1) | WO2009109485A1 (en) |
Families Citing this family (11)
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US9233492B2 (en) * | 2010-10-12 | 2016-01-12 | Florida State University Research Foundation, Inc. | Composite materials reinforced with carbon nanotube yarns |
EP2773810B1 (en) * | 2011-10-31 | 2015-12-30 | Redaelli Tecna S.p.A. | Composite wire with protective external metallic mantle and internal fibre |
JP6015861B2 (en) * | 2013-07-22 | 2016-10-26 | 村田機械株式会社 | Yarn manufacturing equipment |
KR101800304B1 (en) * | 2013-07-22 | 2017-11-22 | 무라다기카이가부시끼가이샤 | Yarn manufacturing device |
JP6675610B2 (en) * | 2015-01-23 | 2020-04-01 | 国立大学法人静岡大学 | Open substrate |
JP6667848B2 (en) * | 2015-01-23 | 2020-03-18 | 国立大学法人静岡大学 | Structure, CNT forest manufacturing method, and structure manufacturing method |
GB201602653D0 (en) * | 2016-02-15 | 2016-03-30 | Grant Duncan A | An arrangement for the electro-deposition of metal on carbon nanotube fibre |
JP7097165B2 (en) * | 2017-10-03 | 2022-07-07 | 古河電気工業株式会社 | Method for manufacturing carbon nanotube wire rod, carbon nanotube wire rod connection structure and carbon nanotube wire rod |
US10128022B1 (en) * | 2017-10-24 | 2018-11-13 | Northrop Grumman Systems Corporation | Lightweight carbon nanotube cable comprising a pair of plated twisted wires |
JPWO2021145180A1 (en) * | 2020-01-15 | 2021-07-22 | ||
JP7105425B2 (en) * | 2020-02-13 | 2022-07-25 | 国立大学法人信州大学 | METHOD FOR MANUFACTURING METALLIC CNT WIRE AND METHOD FOR MANUFACTURING INSULATED METAL CNT WIRE |
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GB1215002A (en) * | 1967-02-02 | 1970-12-09 | Courtaulds Ltd | Coating carbon with metal |
JPS589822B2 (en) * | 1976-11-26 | 1983-02-23 | 東邦ベスロン株式会社 | Carbon fiber reinforced metal composite prepreg |
US4661403A (en) * | 1982-03-16 | 1987-04-28 | American Cyanamid Company | Yarns and tows comprising high strength metal coated fibers, process for their production, and articles made therefrom |
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-
2008
- 2008-03-07 DE DE102008013518A patent/DE102008013518A1/en not_active Withdrawn
-
2009
- 2009-02-24 EP EP09717586A patent/EP2252732A1/en not_active Withdrawn
- 2009-02-24 CN CN2009801079982A patent/CN101960061B/en not_active Expired - Fee Related
- 2009-02-24 US US12/736,068 patent/US20100330365A1/en not_active Abandoned
- 2009-02-24 WO PCT/EP2009/052173 patent/WO2009109485A1/en active Application Filing
Non-Patent Citations (1)
Title |
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See references of WO2009109485A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20100330365A1 (en) | 2010-12-30 |
CN101960061B (en) | 2013-03-06 |
WO2009109485A1 (en) | 2009-09-11 |
DE102008013518A1 (en) | 2009-09-17 |
CN101960061A (en) | 2011-01-26 |
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