EP1954495A1 - Materiau composite plastique-metal a treillis metallique - Google Patents

Materiau composite plastique-metal a treillis metallique

Info

Publication number
EP1954495A1
EP1954495A1 EP06792357A EP06792357A EP1954495A1 EP 1954495 A1 EP1954495 A1 EP 1954495A1 EP 06792357 A EP06792357 A EP 06792357A EP 06792357 A EP06792357 A EP 06792357A EP 1954495 A1 EP1954495 A1 EP 1954495A1
Authority
EP
European Patent Office
Prior art keywords
plastic
composite material
metal composite
material according
metal
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Withdrawn
Application number
EP06792357A
Other languages
German (de)
English (en)
Inventor
Christian Farhumand
Georgios Tziovaras
Matthias Boll
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.)
Covestro Deutschland AG
Original Assignee
Bayer MaterialScience AG
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
Application filed by Bayer MaterialScience AG filed Critical Bayer MaterialScience AG
Publication of EP1954495A1 publication Critical patent/EP1954495A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/082—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising vinyl resins; comprising acrylic resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073—Shielding materials
    • H05K9/0094—Shielding materials being light-transmitting, e.g. transparent, translucent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2369/00—Polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2398/00—Unspecified macromolecular compounds
    • B32B2398/20—Thermoplastics
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y10T428/31681—Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]

Definitions

  • the invention relates to a particularly transparent plastic-metal composite material based on a thermoplastic polymer with a metal wire mesh made of superfine wire, in particular for use for electromagnetic shielding or for the mechanical reinforcement of components with high optical quality.
  • plastic components could not be used due to their low electrical conductivity.
  • Plastics doped with conductive materials for example conductive carbon black
  • conductive materials for example conductive carbon black
  • They are used to avoid electrostatic charge.
  • the object of electromagnetic shielding or reflection at present is solved by the use of metallic lattices, metallic sheets or metallic paints which have optically disturbing properties (i.e., are only partially transparent or completely non-transparent).
  • glass is currently used substantially, is incorporated into the perforated plate or applied to the strip or other pattern with a conductive paste and baked.
  • Parabolic antennas which are used, for example, for the transmission and reception in the microwave range for radio and television in the home, are currently almost exclusively produced using metal sheets that are bent or punched into the appropriate shapes.
  • sheet metal has optical disadvantages: The built-in satellite dishes disturb the visual impression of the buildings on or on which they are attached quite considerably. It should be possible to combine an extremely high transparency and excellent functionality (reflection of microwaves) as well as high impact resistance and good weather resistance by the plastic used. The visually disturbing impression of the parabolic mirror should be able to be reduced.
  • the object of the present invention is therefore to provide a composite material, in particular for reflexia or mechanically reinforced viewing windows or for the electromagnetic shielding of optically transparent components, which can be produced in a simple manner and combines good mechanical properties with a light weight and in particular optical transparency ,
  • the object is achieved in that conventional plastic material, in particular transparent plastic films, plastic moldings or film laminates are provided with a visually hardly noticeable Drahtnetifaus Feinstdraht.
  • the invention relates to a plastic-metal composite material based on a thermoplastic polymer with a metal wire mesh made of very fine wire, wherein the composite material is at least partially optically transparent.
  • the wire mesh may be a woven or knitted fabric of superfine or a crossed composite of at least two layers of parallel to each other arranged fine wires, wherein the layers are glued, welded or sintered at the intersection points of the wires.
  • the solution of the weight problem is achieved by the use of e.g. Polycarbonate instead of glass realized.
  • a fine, thin fabric made of a metal or a metal alloy is used for mechanical reinforcement.
  • the mesh size is z. B. about lOO ⁇ m
  • the wire thickness is z. B. at about 20 ⁇ m. This results in one for the human
  • the wire net is applied to a polycarbonate sheet by being fixed by an adhesive or by softening the underlying PC sheet by solvents that can dissolve polycarbonate.
  • the plastic-metal composite material comprises at least one plastic film.
  • the metal wire net is embedded in the polymer or adhered to the surface of the polymer, in particular the plastic film.
  • the wire mesh can also be by lamination z. B. between two PC films, even at elevated temperature, are fixed. After fixing the wires, the film thus obtained can still be mechanically deformed within certain limits (eg by deep drawing).
  • plastic-metal composite material which is characterized in that the plastic-metal composite material is multilayered with at least two plastic films and the metal wire mesh between two plastic films enclosed, in particular laminated.
  • Another variation of the ⁇ plastic-metal composite material is characterized in that the plastic-metal composite material as a whole is deep-drawable through one or more plastic sheets is formed and that the plastic-metal composite material.
  • the film thus obtained can be further treated by an injection molding process ("injection molding", preferably on the side facing away from the plastic film).
  • injection molding preferably on the side facing away from the plastic film.
  • the back injection process can even be carried out without the wire mesh being directly connected to the film.
  • plates or profiles may also be laminated to the wire net by means of extrusion extrusion techniques.
  • the plastic By using a fine wire mesh of metal or a metal alloy and incorporation of the same in plastic, such as polycarbonate or another, preferably optically transparent plastic, the plastic can be strengthened mechanically. Depending on the mesh size and wire thickness, the effect is different pronounced.
  • the plastic-metal composite material therefore additionally has at least one section of injection-molded plastic.
  • plastic-metal composite material has both injection-molded sections of transparent and non-transparent plastic.
  • thermoplastic polymer for the plastic film and / or the injection-molded plastic a polymer is preferably selected from the series: polycarbonate, polyacrylate, in particular Polymethyl methacrylate, polyester, especially Pqlyethylenterephthalat, polyalkylene, in particular polypropylene used.
  • Iron wire in particular steel wire, or tungsten wire is preferably used as the material for the ultrafine wire.
  • the ultrafine wire preferably has a diameter of at most 100 ⁇ m, preferably 5 to 50 ⁇ m, particularly preferably 10 to 30 ⁇ m.
  • the mesh size of the wire mesh is preferably from 50 .mu.m to 20 mm, more preferably from 80 .mu.m to 5 mm, most preferably from 80 .mu.m to 1 mm.
  • the metal wire net is preferably sintered prior to bonding to the polymer.
  • binding forms for the wire mesh all known binding forms in question, in particular the known types of fabric, preferably the canvas weave, tress, armor, twill and Köpertresse.
  • the metal wire to be incorporated should first be matted. This can be achieved in various ways, for example by an etching process, which precedes the actual incorporation into the plastic or the injection molding process, or else by thermal treatment of the wire mesh under air, so that forms a thin layer of metal oxide on the wire, which scatters the incoming light diffused and not directed.
  • a particularly well-suited preferred arrangement is the wave-shaped, in particular regularly wavy or meandering arrangement of the wires in the wire composite. This arrangement can be realized by the use of special, programmable wire laying machines.
  • the invention also provides for the use of the plastic-metal composite material according to the invention as a mechanically reinforced viewing window, in particular for vehicle windows, safety helmets and protective shields or as a mechanically reinforced insert, in particular for equipping safety clothing.
  • a fine electrically conductive wire mesh for example made of metal or a metal alloy and incorporation into the plastic
  • the plastic-metal composite material can also be used for shielding or for reflecting electromagnetic radiation.
  • the mesh size should be of the order of magnitude or below the desired wavelength in order to ensure the most effective reflection of the electromagnetic radiation.
  • a fine, thin fabric made of a metal or a metal alloy is preferably used, preferably made of stainless steel or tungsten.
  • Another object of the invention is the use of the plastic-metal composite material according to the invention as an optically transparent, electromagnetic shielding or as an electromagnetic reflector, in particular for household appliances, eg. As microwave ovens and for Parabo lantennen.
  • a stainless steel mesh (stainless steel type 1.4306) is inserted with a wire thickness of 20 microns and a mesh size of lOO ⁇ m and at 185 0 C for 10 minutes at a pressure of 300 N / cm 2 laminated.
  • the film composite thus obtained is back-injected with polycarbonate, so that 2 mm thick plates were obtained.
  • the plates show an improvement in puncture resistance compared to the unmodified PC plate of the same density.
  • wires of tungsten are arranged in parallel in two mutually perpendicular layers.
  • the wires lying on the film are first fixed on the film by applying small drops of dioxalane to the intersections of the individual wires.
  • the dioxalane initially dissolves the polycarbonate on the surface of the film, but then evaporates again, so that a thin layer of polycarbonate remains on the wires, which ensures a sufficiently stable bond to the film.
  • a UV-curing polyurethane-based paint was used to fix the wires to the film while providing mechanical protection of the wires.
  • the wires showed a good adhesion to the surface, which was sufficient to insert the film in a back injection mold and back-injected with polycarbonate.
  • the wires were so completely enclosed by polycarbonate and the workpiece shows little distortion of the background in the see-through.
  • the back molding can also be done without previous painting.
  • the film can, as described above, either back directly on the wire-coated side or on the side facing away from the wire or treated with different paint systems.
  • the wires are only very difficult to see and are hardly perceived by the human eye. Even the, by using the Fine wires only small, disturbing optical influence when viewing omitted due to the wavy arrangement practically completely.
  • Example 1 A composite of two films with a wire mesh as shown in Example 1 was examined for its properties and compared with a wireless film and a composite with a wider meshed wire mesh.
  • the foils were installed in a waveguide section and the material-dependent attenuation of microwave radiation was determined.
  • the transmission through the foils is in the considered frequency range (microwaves of the frequency 2,2 to 2,7 GHz) independent of the frequency (within the measuring accuracy of + - 5%)
  • a film laminate of two films with a coarse mesh (mesh size 5 mm) of tungsten wire (20 ⁇ m) between the two films showed a transmission of averaged 25%.
  • Example 1 A sample prepared according to Example 1 and then back-injected, as well as two samples made according to Example 2 and then back-injected, were examined for reflectance at higher microwave frequencies, which correspond approximately to the commercial satellite emission frequency.
  • the signal of a microwave wave detector was recorded with a change in distance between sensor and sample (measurement of the standing wave)
  • the signal curves of the samples to be examined were compared with the reflection on metal and on a blank sample. Samples and blank are sealed on the back with absorber material to provide optimal measurement conditions. The frequencies used were 12.5 GHz and 15 GHz. The reproducibility was investigated for all samples at 15 GHz.
  • the location and polarization direction of the microwaves were varied.
  • the first pattern with an inserted metal wire mesh with a mesh size of 200 ⁇ m and a wire thickness of 20 ⁇ m showed a reflection that is directly comparable with the reflection on a metal sheet in the wavelength range used.
  • the wires used were made of stainless steel. Both patterns showed very good reflective properties, suggesting suitability as starting material for the use of transparent satellite dishes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Laminated Bodies (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

L'invention concerne un matériau composite plastique-métal, notamment transparent, à base d'un polymère thermoplastique et comportant un treillis métallique à fils très fins, ce matériau étant en particulier destiné au blindage électromagnétique ou à la réalisation de baies mécaniquement renforcées.
EP06792357A 2005-10-15 2006-10-04 Materiau composite plastique-metal a treillis metallique Withdrawn EP1954495A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510049447 DE102005049447A1 (de) 2005-10-15 2005-10-15 Kunststoff-Metall-Verbundmaterial mit Metalldrahtnetz
PCT/EP2006/009574 WO2007045354A1 (fr) 2005-10-15 2006-10-04 Materiau composite plastique-metal a treillis metallique

Publications (1)

Publication Number Publication Date
EP1954495A1 true EP1954495A1 (fr) 2008-08-13

Family

ID=37349362

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06792357A Withdrawn EP1954495A1 (fr) 2005-10-15 2006-10-04 Materiau composite plastique-metal a treillis metallique

Country Status (7)

Country Link
US (1) US20070087209A1 (fr)
EP (1) EP1954495A1 (fr)
JP (1) JP2009511299A (fr)
KR (1) KR20080050613A (fr)
CN (1) CN101287600A (fr)
DE (1) DE102005049447A1 (fr)
WO (1) WO2007045354A1 (fr)

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KR101038032B1 (ko) * 2008-09-02 2011-05-31 주식회사 에스폴리텍 방탄패널
DE102009013397A1 (de) * 2009-03-16 2010-09-23 Dr.Ing.H.C.F.Porsche Aktiengesellschaft Faserverbund-Anbauteil für ein Kraftfahrzeug
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CN102848610A (zh) * 2011-06-29 2013-01-02 鸿富锦精密工业（深圳）有限公司 电磁屏蔽材料
DE102011107444A1 (de) * 2011-07-08 2013-01-10 Institut Für Verbundwerkstoffe Gmbh Verbundwerkstoff, sowie Bauteil aus einem solchen Verbundwerkstoff
CN102291971B (zh) * 2011-08-16 2013-12-25 中国人民解放军总后勤部建筑工程研究所 柔性采光电磁屏蔽窗
CN102514290B (zh) * 2011-12-04 2014-06-25 西北有色金属研究院 一种金属纤维/聚合物复合电磁屏蔽材料及其制备方法
CN103369939A (zh) * 2013-06-26 2013-10-23 中国科学院上海光学精密机械研究所 电磁屏蔽光窗
CN104085136A (zh) * 2014-06-12 2014-10-08 东莞市正升手袋辅料有限公司 一种环保复合板及其制作工艺
CN104787427B (zh) * 2015-02-09 2017-06-13 喜悦(宁波)塑料包装品有限公司 一种物流容器
CN105619947A (zh) * 2015-12-25 2016-06-01 江苏烁石焊接科技有限公司 一种高氮钢丝网与聚碳酸酯复合材料及其制备工艺
CN107776001B (zh) * 2016-08-31 2023-11-03 厦门新技术集成有限公司 一种金属网加强塑料板
KR20180062676A (ko) * 2016-12-01 2018-06-11 박정길 재사용 메쉬망을 이용한 플라스틱패널
JP6823805B2 (ja) * 2016-12-06 2021-02-03 パナソニックＩｐマネジメント株式会社 被覆部材及び被覆方法
CN107310230A (zh) * 2017-04-27 2017-11-03 柳州市够旺贸易有限公司 抗冲击塑料制品
CN109094125A (zh) * 2017-06-20 2018-12-28 伊利诺斯工具制品有限公司 一种绝缘复合板材
CN108943952A (zh) * 2018-06-12 2018-12-07 中国电子科技集团公司第三十三研究所 一种耐高温柔性屏蔽玻璃及其制备方法
WO2020111298A1 (fr) * 2018-11-26 2020-06-04 전주대학교산학협력단 Composite hybride constitué de treillis de fils métalliques et de plastique renforcé par des fibres de carbone et ayant des propriétés de blindage électromagnétique améliorées
CN109574479A (zh) * 2018-12-20 2019-04-05 中国电子科技集团公司第三十研究所 电磁屏蔽玻璃激光焊接结构及制作工艺
WO2021016524A1 (fr) * 2019-07-25 2021-01-28 Virginia Tech Intellectual Properties Inc. Fibres triboélectriques, générateurs et capteurs

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Also Published As

Publication number Publication date
KR20080050613A (ko) 2008-06-09
DE102005049447A1 (de) 2007-04-26
CN101287600A (zh) 2008-10-15
US20070087209A1 (en) 2007-04-19
WO2007045354A1 (fr) 2007-04-26
JP2009511299A (ja) 2009-03-19

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