EP1963455A1 - Materiau composite, en particulier materiau multicouche, ainsi que materiau adhesif et materiau de liaison - Google Patents

Materiau composite, en particulier materiau multicouche, ainsi que materiau adhesif et materiau de liaison

Info

Publication number
EP1963455A1
EP1963455A1 EP06820829A EP06820829A EP1963455A1 EP 1963455 A1 EP1963455 A1 EP 1963455A1 EP 06820829 A EP06820829 A EP 06820829A EP 06820829 A EP06820829 A EP 06820829A EP 1963455 A1 EP1963455 A1 EP 1963455A1
Authority
EP
European Patent Office
Prior art keywords
material according
matrix
nanofiber
composite material
bonding
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Withdrawn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
EP06820829A
Other languages
German (de)
English (en)
Inventor
Xinhe Tang
Ka Chun Tse
Ernst Hammel
Ben Zhong Tang
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.)
Rogers Germany GmbH
Original Assignee
Electrovac 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 Electrovac AG filed Critical Electrovac AG
Publication of EP1963455A1 publication Critical patent/EP1963455A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • 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
    • B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/041—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
    • 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
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
    • H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
    • H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
    • H01L23/3735—Laminates or multilayers, e.g. direct bond copper ceramic substrates
    • 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
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/38—Improvement of the adhesion between the insulating substrate and the metal
    • H05K3/386—Improvement of the adhesion between the insulating substrate and the metal by the use of an organic polymeric bonding layer, e.g. adhesive
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/102—Oxide or hydroxide
    • 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
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/208—Magnetic, paramagnetic
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/302—Conductive
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
    • 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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/03—Use of materials for the substrate
    • H05K1/0306—Inorganic insulating substrates, e.g. ceramic, glass
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/02—Fillers; Particles; Fibers; Reinforcement materials
    • H05K2201/0203—Fillers and particles
    • H05K2201/0242—Shape of an individual particle
    • H05K2201/0251—Non-conductive microfibers
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/02—Fillers; Particles; Fibers; Reinforcement materials
    • H05K2201/0203—Fillers and particles
    • H05K2201/0242—Shape of an individual particle
    • H05K2201/026—Nanotubes or nanowires
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/03—Conductive materials
    • H05K2201/032—Materials
    • H05K2201/0323—Carbon
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/03—Conductive materials
    • H05K2201/0332—Structure of the conductor
    • H05K2201/0335—Layered conductors or foils
    • H05K2201/0355—Metal foils
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/08—Magnetic details
    • H05K2201/083—Magnetic materials
    • 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
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/10—Using electric, magnetic and electromagnetic fields; Using laser light
    • H05K2203/104—Using magnetic force, e.g. to align particles or for a temporary connection during processing
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24058—Structurally defined web or sheet [e.g., overall dimension, etc.] including grain, strips, or filamentary elements in respective layers or components in angular relation
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24132—Structurally defined web or sheet [e.g., overall dimension, etc.] including grain, strips, or filamentary elements in different layers or components parallel
    • 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
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
    • Y10T428/24994—Fiber embedded in or on the surface of a polymeric matrix
    • Y10T428/249942—Fibers are aligned substantially parallel
    • 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]
    • Y10T428/31511—Of epoxy ether
    • Y10T428/31515—As intermediate layer

Definitions

  • Composite material in particular multi-layer material and adhesive or
  • the invention relates to a composite material according to the preamble of claim 1 and in particular to a composite material consisting of a ceramic layer and at least one provided on this ceramic layer metallization or metal layer.
  • the invention further relates to an adhesive or bonding material according to the preamble of claim 18.
  • the production of composite materials is also known as printed circuit boards in the form of metal-ceramic substrates according to the so-called DCB process.
  • DCB direct copper-bond-technology
  • the metallization required for the formation of traces, terminals, etc., on a ceramic e.g. on an aluminum-oxide-ceramic by means of the so-called "direct copper-bond-technology" (DCB) applied, using the metallization forming metal or copper foils or metal or copper sheets having on their surface sides a Layer or a coating (reflow layer) of a chemical compound of the metal and a reactive gas, preferably oxygen.
  • DCB direct copper-bond-technology
  • this layer or coating forms a eutectic with a melting temperature below the melting temperature of the metal (eg copper), so that by laying the film on the ceramic and by heating all the layers they can be joined together, by melting the metal or copper substantially only in the region of the reflow layer or oxide layer.
  • the metal eg copper
  • This DCB method then has, for example, the following method steps: > Oxidizing a copper foil so that a uniform copper oxide layer results;
  • Ceramic material In this method, which is used especially for the production of metal-ceramic substrates, at a temperature between about 800 - 1000 0 C, a connection between a metal foil, such as copper foil, and a ceramic substrate, such as aluminum nitride ceramic, using a Brazing produced, which in addition to a main component such as copper, silver and / or gold also contains an active metal.
  • This active metal which is, for example, at least one element of the group Hf, Ti, Zr, Nb, Ce, establishes a chemical bond between the solder and the ceramic, while the bond between the solder and the metal is a metallic braze joint ,
  • Object of the present invention is to show a composite material which can be made particularly simple and inexpensive, while maintaining the best possible thermal properties.
  • a composite material according to claim 1 is formed.
  • An adhesive or bonding material is the subject of patent claim 18.
  • the composite material according to the invention is preferably a multilayer material and preferably a circuit board for electrical circuits, modules, etc. suitable multilayer material consisting of a plate-shaped on at least one surface side of an electrically insulating material consisting of support or substrate and at least one of a metal or copper plate or metal or copper foil formed metallization, which is connected via the composite material to the substrate.
  • the composite material according to the invention has the advantage of a simple and inexpensive production. Furthermore, a compensation of different coefficients of thermal expansion of the materials of the metallization and of the substrate is achieved via the layer formed by the adhesive or bonding agent. In particular, with appropriate orientation of at least part of the nanofiber material in the bonding layer parallel or approximately parallel to the joined surfaces, an effect compensating the thermal expansion of the metallization can be achieved.
  • Multi-layer material according to the invention 3 is a schematic representation of a measuring arrangement for determining the thermal behavior of a thermal paste formed as an adhesive or a thermal adhesive according to the invention; 4 schematically shows an arrangement for preparing different samples; Fig. 5 shows the thermal resistance measured on different samples; FIG. 6 shows a comparison of the thermal resistance measured with the device of FIG. 3 for different material connections or multilayer materials.
  • 1 is a multilayer material which is suitable, for example, as a printed circuit board for electrical circuits or modules.
  • the multi-layer material consists of a plate-shaped carrier or substrate 2, which in this embodiment is made entirely of an electrically insulating material, for. B. from a
  • Ceramics such as As alumina ceramic, aluminum nitride ceramic, silicon nitride ceramic, etc.
  • Other materials are conceivable for the substrate 2, for example, plastic, for. B. epoxy-based, etc.
  • This metallization 3 is connected in a planar manner to the substrate 2 via an adhesive or bonding layer 4 formed by an adhesive or a bonding material.
  • the substrate 2 is provided on both surface sides with the metallization 3.
  • multilayer material 1 is symmetrical, at least as regards the type and sequence of the individual layers, relative to a center plane of substrate 2.
  • metallization 3 it is possible to provide metallization 3 only on one surface side of substrate 2.
  • the metallization 3 is then structured correspondingly on one side of the substrate 2 using the customary known etching and masking techniques.
  • the substrate 2 itself multi-layered, consisting of a metallic support layer 2.1 z. B. of aluminum and an insulating layer 2.2 on the surface sides of the plate-shaped substrate 2, specifically where a metallization 3 is connected via a bonding layer 4.
  • a peculiarity of the multi-layer product 1 is that the bonding layer 4 contains in a matrix suitable as an adhesive, for example in an epoxy resin matrix, carbon nanofiber material or carbon nanofiber or nanotube, so that an extremely low thermal resistance Rth (.degree. W) or vice versa, a high thermal conductivity 1 / Rth result, so a
  • Multilayer material 1 with a substrate 2 of an alumina ceramic with respect to the thermal conductivity or the thermal resistance between the upper and lower metallization 3 is quite comparable to a multilayer material, in which the metallizations are applied to the ceramic substrate using the so-called DCB method , as will be explained in more detail below.
  • the matrix contains about 5 to 30% by weight of nanofiber material based on the total weight of the adhesive or bonding material.
  • a nanofiber material is one under the
  • Polyrograf III commercially available carbon nanofiber used, which is also baked before being mixed into the matrix, if appropriate, also before a pretreatment at 3000 ° C.
  • the matrix used is an epoxy-based, for example polyester A solvent is used to obtain an optimum incorporation of the nanofiber material into the matrix material, triethylene glycol monobutyl ether being particularly suitable for this purpose.
  • FIG. 3 shows a schematic representation of an arrangement for measuring the thermal resistance caused by the bonding layer 4.
  • the arrangement consists of an upper heating plate 5, from a subsequent to this heating plate and with this for heat transfer optimally connected measuring plate 6 and from a lower measuring plate 7.
  • temperature sensors or sensors 6.1 and 7.1 are provided with the aid of which the temperature of these plates is accurately recorded and as measured values to a measuring or evaluation electronics can be forwarded.
  • the heating plate 5 is electrically operated, for example, with a heating voltage of 60 volts and with a constant heating current of, for example, 2.7 amps, so that during the measurement of the hot plate 5, a well-defined, constant amount of heat is generated.
  • the respective test piece 8 is arranged, which consists of two copper plates 9 and 10, which are connected to each other via the cured bonding layer 4.
  • the measuring plates 6 and 7 and the adjacent plates 9 and 10 each have a layer 1 1 or 12 of a conventional, in particular also known in terms of their properties Thermal compound provided.
  • FIG. 5 shows in a graph the thermal resistance Rth determined in the measurement in ° K / W for various samples, namely:
  • Position A when lying on one another, not connected by the bonding layer 4
  • Position B - E in each case with plates 9 and 10 connected to one another via the bonding layer 4, however: Position B: without further temperature treatment;
  • Position C when treating sample 8 for 2.8 days at one
  • Position D when treating the sample 8 for 6 days at a temperature of 120 0 C;
  • Position E when treating Sample 8 for 1 day at 160 ° C.
  • FIG. 5 shows that the thermal conductivity of the bonding layer 4 improves with a longer temperature influence, obviously by further hardening of this layer.
  • the measurements also showed that the thermal resistance Rth measured at each sample 8 was only initial, i. slightly decreases in an initial phase of each measurement, obviously due to inertia of the measuring system, but then remains constant at the end of this initial phase.
  • FIG. 6 shows in comparison the thermal resistance of a copper-ceramic multilayer material.
  • the thermal resistance Rth ( 0 KfW) of a sample in which the upper plate 9 made of copper rests without connection against the lower plate 10 made of ceramic (alumina ceramic).
  • the positions B and D relate to measurements in which the upper plate 9 made of copper through the bonding layer 4 with the lower plate 10 made of ceramic, namely position B - at a treatment of the sample 8 for 3 days at a temperature of 150 0 C and
  • the position C shows in comparison the thermal resistance of a DCB substrate.
  • the position E is the thermal resistance measured with the measuring device of FIG. 3, which results without the sample 8, ie. H. at immediately above the layers
  • the thermal conductivity of the bonding layer 4 can be substantially increased by the fact that the nanofibers of the nanofiber material used are optimally chosen with respect to their length, ie these fibers or at least a majority of these fibers have a length between 1 and 100 ⁇ , preferably 10 ⁇ and / or thereby in that the nanofiber material is pretreated and then optimally integrated into the matrix forming the bonding material by this pretreatment.
  • This length corresponds to the surface irregularities which are usually present in the case of ceramic substrates and / or copper foils, so that these irregularities can be bridged optimally with nanofibers of these lengths.
  • a further improvement in the thermal conductivity of the bonding layers 4 and thus an improvement in the thermal properties of the multilayer material 1 is achieved by orienting the nanofibers or nanotubes at least for the most part in the direction of the heat flow, for example by virtue of the nanofibers or nanotubes being introduced into the substrate before introduction the matrix is ferromagnetic, d. H.
  • the nanofibers or nanotubes being introduced into the substrate before introduction the matrix is ferromagnetic, d. H.
  • an optimal alignment of the nonofibers or nanotubes takes place by an external magnetic field (arrow H) in such a way that these nanofibers or nanotubes with their longitudinal extent are perpendicular or at least approximately perpendicular to the surface sides of the substrate 2 and the adjacent ones Metallization 3 are oriented in the bonding layer 4. After the bonding layer 4 has cured, the nanofibres or nanotubes are fixed in this orientation.
  • the application of the ferromagnetic material or the nanoparticles of this material to the nanofiber material or the nanofibers or nanotubes takes place by using a suitable surface-adhesion-layer-forming polymer, for example using polyanilines.
  • a further improvement of the thermal properties of the multilayer material 1 can be achieved by a compression of the bonding layer 4 after curing, for example by hooking (HI P method) or by a treatment in a vacuum, so possibly present in the respective bonding layer 4 bubbles or to close cavities.
  • the heat-conducting adhesive or the bonding material can be used not only for the production of multilayer materials or substrates, but also generally for all applications in which an adhesive bond between two components is required with simultaneous optimal heat transfer.
  • the bonding material is also electrically conductive, so it can be used optimally as an electrically conductive adhesive, ie everywhere where an electrical connection is required or required by gluing, for example, when assembling printed circuit boards with components, etc.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Nanotechnology (AREA)
  • General Physics & Mathematics (AREA)
  • Ceramic Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Materials Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Composite Materials (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Laminated Bodies (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

L'invention concerne un matériau multicouche dans lequel au moins deux composants sont liés entre eux au moyen d'un composé adhésif. L'invention est caractérisée en ce que le composé adhésif est formé d'une couche adhésive ou de liaison renfermant un matériau nanofibreux, et en ce que ladite couche renferme le matériau nanofibreux dans une matrice appropriée comme adhésif.
EP06820829A 2005-12-23 2006-08-10 Materiau composite, en particulier materiau multicouche, ainsi que materiau adhesif et materiau de liaison Withdrawn EP1963455A1 (fr)

Applications Claiming Priority (2)

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DE200510062181 DE102005062181A1 (de) 2005-12-23 2005-12-23 Verbundmaterial
PCT/IB2006/003030 WO2007072126A1 (fr) 2005-12-23 2006-08-10 Materiau composite, en particulier materiau multicouche, ainsi que materiau adhesif et materiau de liaison

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EP1963455A1 true EP1963455A1 (fr) 2008-09-03

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US (2) US8119220B2 (fr)
EP (1) EP1963455A1 (fr)
JP (1) JP5343283B2 (fr)
CN (1) CN101341225B (fr)
DE (2) DE102005063403A1 (fr)
WO (1) WO2007072126A1 (fr)

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Publication number Publication date
JP5343283B2 (ja) 2013-11-13
DE102005062181A1 (de) 2007-07-05
JP2009520612A (ja) 2009-05-28
DE102005063403A1 (de) 2007-09-06
US20120031653A1 (en) 2012-02-09
US8304054B2 (en) 2012-11-06
WO2007072126A1 (fr) 2007-06-28
US20100227114A1 (en) 2010-09-09
CN101341225A (zh) 2009-01-07
US8119220B2 (en) 2012-02-21
CN101341225B (zh) 2013-05-15

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