TW200800606A - Multi-layered composite capable of conducting heat and absorbing electromagnetic wave and manufacturing method thereof - Google Patents

Abstract

A multi-layered composite capable of conducting heat and absorbing electromagnetic wave and manufacturing method thereof, wherein the multi-layered composite comprises one or plural heat conducting layers and one or plural electromagnetic wave absorbing layers, and the above mentioned layers are laminated onto each other; the manufacturing method thereof includes: 10% to 70% of a gluing material and 90% to 30% of a heat conducting powder are selected; after being kneaded, a first heat conducting layer with 0.02 to 15mm thickness is formed by a fashion of coating, spraying, screen printing or thermal pressing, then 10% to 70% of the gluing material and 90% to 30% of an electromagnetic wave absorbing powder are selected and after being kneaded, a first electromagnetic wave absorbing layer with 0.02 to 15mm thickness is formed on a surface of the first heat conducting layer by a fashion of coating, spraying, screen printing and thermal pressing; the above mentioned manufacturing method are repeatedly operated so that other heat conducting layers and other electromagnetic wave absorbing layers can be laminated onto each other; thus, a multi-layered composite is therefore obtained.

Description

200800606 " IX. Invention: [Technical Field] The present invention relates to a multilayer composite material having heat conduction and absorbing electromagnetic waves and a manufacturing method thereof, and particularly, a method suitable for being disposed on a surface of an electronic component and a heat sink A multilayer composite material for conducting heat generation for excluding electronic components, and electromagnetic waves for absorbing or isolating electronic components, and a method of manufacturing the same. [Prior Art] According to 'many electronic parts', especially large integrated circuits, microprocessors, etc., it is inevitably accompanied by high heat in operation, and this high heat can not only be degraded if it is not eliminated in time. The operating efficiency and service life of electronic components, even more so will lead to the failure of electronic components and loss of function, especially in today's electronic products in order to meet the trend of light and thin, the relevant microprocessors are gradually adopting a high degree of integration (degree of Integration) is designed to double the amount of heat released per unit area of the component, so the adverse effects or damage caused by insufficient cooling will also be severe. As is known, the general electrical components are driven by the current, and the flow of the private flow is not perfect because of impedance matching, so that electromagnetic radiation is generated, and the current flow is Along with the generation of electromagnetic radiation, the electrical components in operation generate electromagnetic waves of varying strengths, which not only affect themselves or interfere with the operation of other electronic components, especially for some sophisticated integrated circuits or microprocessors. External electromagnetic interference (Electr〇Magnetic Interference (EMI)) may lead to erroneous calculations, derivation of unpredictable after 5 200800606 ·; In addition, when electrical components operate, a large amount of electromagnetic spills into the towel, may also It will harm human health. Therefore, how to maintain the operation of precision electronic components without external electromagnetic interference and to prevent those electronic components from operating in the external environment: shooting; magnetic waves to maintain human health are all actively sought after in the industry. .

It is not possible to effectively use the Wei or Wei Cai, so it is impossible to avoid the malfunction or abnormality caused by the aforementioned electromagnetic waves. Conventionally, a means for promoting the electric product, Lai Wei, is provided with a heat dissipating medium between the electric component that generates heat and the heat dissipating n, such as a heat conducting material such as heat conduction f and phase change = material, so as to effectively heat The transfer of electronic components to the heat sink for the purpose of cooling electrical equipment; however, this hybrid technology, whether its age or radiator, is otherwise known to absorb electromagnetic waves or suppress noise, the most common _In the housing of electrical products, various conductive materials, such as metal sheets, metal powders or wires made of copper, copper, zinc and other metal compounds, some are coated on the plastic casing - conductive Paint or metal plate, metal mesh, etc. as a structure to reflect electromagnetic waves; however, these methods not only make the cost of the process flow 'in the performance of mussels but also negatively block the electromagnetic radiation'. The degree (4), the true light energy generated by electromagnetic waves is not removed by these __, so the damage caused by the electromagnetic radiation is still present. Some of the more advanced methods of absorbing electromagnetic waves or suppressing noise are to use electromagnetic waves in the substrate of the barrier lion, such as the Japanese special AH 』 系 由 由 有 有 有 有 有 有 有 有 有 有 有 有Lai salt and other electromagnetic wave absorption 6 200800606 " Receiving materials, although it can be Wei or _ electromagnetic waves, but sometimes only the range of the low frequency zone 'also _ acid grading material caused by raw __, fine use and material stability will cause _; For example, China Patent Announcement No. 69 discloses the use of barium titanate (threat 03) powder as an electromagnetic wave absorber, but the substrate (usually flap or tow) from titanate lock and barrier material Qian Shu, 峨 难以 难以 难以 难以 难以 难以 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The cost is not too high, and the heavy (four) quantity is not in line with the current lightweight of the product. In addition, the barium titanate (BaTi03) powder has electromagnetic wave absorption effect, but the heat transfer material does not have a good heat transfer effect, so Not suitable for use as thermal cum A composite material that absorbs electromagnetic waves. SUMMARY OF THE INVENTION The present invention aims to solve the above problems and provide a "thermal composite and absorbing electric _ magnetic wave eve layer composite material and a manufacturing method thereof", which can simultaneously remove heat and electromagnetic waves generated by the operation of electrical components. Bad effects. In order to solve the above problems, the multilayer composite material for absorbing electromagnetic waves provided by the present invention comprises at least a heat conducting layer and an electromagnetic wave absorbing layer, and each material layer is densely formed with each other to form a multi-layer composite material; In the case of the appropriate $ 财 财 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , And electromagnetic wave absorption properties of the material; There are 材 材 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四The Wei absorption layer will absorb and absorb the electromagnetic radiation into a small amount of heat energy. At the same time, the thermal conductivity layer of the multilayer composite material is placed on the surface of the launching material, and the planting rate can be transferred to the tree. To avoid the accumulation of heat on the electronic components, causing malfunctions; thus solving the heat dissipation of the electrical components during operation. According to the present invention, the heat conductive layer of the multilayer composite material towel comprises a heat conductive powder and a rubber material which is combined with the hot material powder fine particles, and the scaly powder is self-distributed to the rags by a kneading process. Then it is finer (as shown in the first figure and Figure 1). Wherein, the heat conductive powder may be selected, for example, oxidized, nitrided, nitrided, graphite, scale, copper powder, etc., the thermally conductive powder may be one of the foregoing materials or may be mixed by two or more materials. The thermal conductive powder material is an irregular type of granule, and a suitable average particle size is selected to be about (~(1)^❿. And the glue 贞] can be _ _ _ epoxy resin, acrylic, acid resin, polyester resin, polyacetic acid B (PVAC), (10)) difficult or synthetic rubber ..., etc., X, the glue The material may be one of the foregoing materials or a mixture of two or more materials. The heat conducting layer is usually made into a surface layer of aG2~15mm thickness, and because of the material texture of the heat conducting layer, it has the characteristics of flexibility and deformation of the dragon, so that it can be closely and conformally disposed on the surface of the heat-generating electronic component. In order to reduce the contact thermal resistance of the interface, (4) quickly remove the hot material generated by the electronic components.

S 200800606

Furthermore, the heat conducting layer can be mixed by different ratios of the rubber material and the heat conducting powder to obtain the desired heat transfer property and other material properties. The general principle is that the proportion of the heat conducting powder in the mixed material is higher. The heat transfer performance is younger. However, the flexibility and plasticity of the material are poor. On the contrary, the more the _ is occupied by the ride, the better the heat transfer performance, and the physical properties such as flexibility and plasticity of the material are better. Usually, between 10% and 70% of the rubber material is used in combination with 90% to 30% of the heat conductive powder to obtain a heat conductive material layer having a heat transfer coefficient of about 0.5 W/mk to 7 W/mk (see the second Figure). According to the present invention, the electromagnetic wave absorbing layer in the multilayer composite material comprises a ytterbium magnetic wave absorbing powder and a rubber material for combining the electromagnetic wave absorbing powder particles, and the electromagnetic wave absorbing powder is uniformly distributed in the rubber by a kneading process. In the material, then fixed molding (as shown in Figure 3 and Figure 2). The electromagnetic wave absorbing powder may be one of the following types of materials or a mixture of two or more materials: (1) Dielectric absorbing material · Adding an electrically lossy substance such as carbon fiber and conductive in a polymer medium Carbon black, tantalum carbide, carbon nanotubes of carbon grade, carbon fiber, conductive carbon black, tantalum carbide, etc., which are used to reduce the incident electromagnetic wave energy by reactance; preferably, the resistivity of the dielectric absorbent material (7 is Between 1〇_3 s/cm~1 s/cm (2) Electromagnetic absorption material: a powder material made of a magnetic alloy material, such as polycrystalline ferrite, hexagonal ferrite, nano Grade ferrite, metal powder (hydroxy iron powder, several base iron powder, carbonyl iron-nickel alloy), magnetic ultrafine powder, etc., which use magnetic material to generate electromagnetic loss under the action of high frequency electromagnetic field. The material has the effect of absorbing electromagnetic wave energy. (3) Composite absorbing material: it is a composite powder material having both dielectric and electromagnetic absorption properties, such as: (iron nickel) silver alloy (Fe Ni-Ag Alloy), Silver-nickel alloy (Ni-Ag Alloy), silver-iron alloy ( Fre_Ag Alloy), iron-nickel indium _ silver alloy (FeNiMo-Ag Alloy) or iron-nickel-cobalt _ silver alloy (FeNiC〇-Ag

Alloy), Fe-Sic, etc.; such composite absorbing material has higher electromagnetic wave absorption performance and wider electromagnetic wave absorption bandwidth than the above-mentioned dielectric absorbing material or electromagnetic absorbing material. The electromagnetic wave absorbing powder material is irregular particles, and preferably has an average particle size of about 0.03 to 150 μm. Furthermore, the aforementioned rubber materials may be selected from epoxy resin, acrylic resin, _ resin, propylene glycol, polyvinyl acetate resin (pVAC), silicone resin or synthetic rubber. ···etc., and Na Na may be the above-mentioned materials - or a mixture of two or more materials. The electromagnetic wave absorbing layer is usually disposed on one surface of the heat conductive layer to form a planar thin layer having a thickness of 2 to 15 mm, which is laminated with the heat conductive layer, and the texture of the two layers is soft. _, with flexible and plastic deformation characteristics, 匕 easy to cover the periphery of electronic components that generate electromagnetic waves, effective for electromagnetic light source, that is, the shaft will stimulate the electromagnetic radiation pure Wei, and also prevent Sensitive electronic components are subject to (external) (four) magnetic noise interference. μ electromagnetic wave and layer can be mixed by different ratios of glue and electromagnetic wave absorbing powder to obtain the desired amount of electromagnetic radiation attenuation and other material properties; generally, 200800606, electromagnetic wave absorbing powder in mixed materials occupies The more the proportion, the better the political energy to absorb electromagnetic radiation, but the physical properties such as flexibility and plasticity of the material are worse. Conversely, the more the proportion of the rubber material is occupied, the lower the electromagnetic absorption efficiency, and the plasticity and plasticity of the material. The physical properties are preferred. Preferably, a glue between 1G% and 7G% is used in combination with 90% to 30% of the electromagnetic wave absorbing powder to obtain an electromagnetic wave absorbing layer of about 6 to 2 electromagnetic radiation attenuation values (see the fourth figure). Show)

Further, the electromagnetic wave absorbing layer can also be turned over by the aforementioned electromagnetic waves

The amount of electromagnetic compensation required to absorb the powder material or Nasaki domain and other material properties, such as: _ dielectric Wei material after the powder acid ride: when the substrate, the grease is an electrical insulator, the volume resistivity is in, ~ 1〇16ω ·Between coffee, carbon two-dimensional is a good conductor of electricity, the volume resistivity is between H _·3Ω · the composite material composed of it ^ is a constant conductivity, between the conductor and the insulator Of course, not all carbon fiber varieties can be selected as absorbing materials, and only n-dimensional composites treated with L have higher absorption characteristics; when different dielectric absorbing materials and rubber materials After the mixing, the impedance value of the volume resistivity is between 1〇3~ω66Ω.em, and the electromagnetic radiation attenuation value can be obtained. For example: _ electromagnetic absorption material powder and rubber material after mixing: general volume resistivity between (10) ~ coffee, according to the electromagnetic field theory generally use complex dielectric constant ❿ complex permeability "to describe the electromagnetic material of the absorbing material Performance; when the coffin used maintains the dielectric constant of the turns and uses (iv) the real and imaginary parts of the complex magnetic permeability of the magnetically absorptive powder are respectively equal, and the recording and the free are as impedance matching or close matching, the incident The electromagnetic wave energy can be transmitted through the material or more through the reading radiation. In 200800606, the reflection coefficient of the incident wave can be reduced and the absorbing property of the material can be improved. When the thickness of the molding is thicker, the electromagnetic light attenuation of the absorbing wave is higher. And the wider the bandwidth. For example, after the composite powder material having both dielectric absorption properties and electromagnetic absorption properties is mixed with the rubber material, the powder has a good electrical conductivity and electromagnetic properties, so that the powder is mixed with the rubber material. The volume resistivity obtained afterwards is about 1〇_3~1〇6 Ω·cm. When the thickness is above o.oimm, the bandwidth is on the 1st side of 2~12 (} with the attenuation value of electromagnetic radiation of 6dB~70dB. Based on the foregoing disclosure, it can be seen that by arranging the multilayer composite material with heat conduction and electromagnetic wave absorption of the present invention on an electromagnetic wave emitting source, it is possible to simultaneously improve the adverse effects of heat and electromagnetic waves generated when the electrical components operate. According to the present invention, there is provided a method for manufacturing a multilayer composite material having heat conduction and absorbing electromagnetic waves, which comprises: (1) an operation of forming a first heat conduction layer: A, a heat conductive powder and a rubber material are required as required The ratio is placed in a mixing tank. 'Set the mixing conditions according to different types of rubber materials, and perform 15~30 minutes of mixing operation on the mixed materials' to make the materials uniform. B' is applied by means of coating, spraying or spraying or screen printing or hot press forming, and the mixed material is fixedly formed into a planar thin layer having a thickness of about 0.03 to 12 mm, and as a second As shown in the figure, the uniform distribution of the thermally conductive powder microparticles can be positioned by the molecular structure of the rubber material, so that the thermal conductive layer has stable thermal conductivity. 12 200800606 ^ (2) Forming the first electromagnetic wave Operation of the absorption layer: A. The electromagnetic wave absorbing powder and the rubber material are placed in a mixing tank according to the required ratio, and the different mixing materials are set according to different types of rubber materials. I5~3 minutes of mixing operation, so that the materials are uniformly mixed and used. B. When the rubber material and the first heat conductive layer are made of the same material, the mixed material may be coated or The technical means of spraying or screen printing or hot press forming is directly applied to one surface of the first heat conducting layer, and the mixed material is fixedly formed into a planar thin layer having a thickness of about 2 to 15 mm. Due to the electromagnetic The absorbing layer has the same properties as the rubber material of the first heat conducting layer, so that the two layers are very tight and stable. However, when the rubber material used in the first heat conducting layer is different from the material, First, the above-mentioned mixed material is applied by a coating or spray coating or screen printing or hot press forming technique to be fixedly formed into a planar thin layer having a thickness of about 0. 02 to 15 mm, and then the electromagnetic wave is absorbed and thinly laminated. The same is applied to one surface of the first heat conducting layer. Similarly, in the subsequent manufacture of the plurality of laminated layers, the heat conducting layer and the electromagnetic wave are sequentially absorbed according to the operation method of the above-mentioned thin layer fixed forming. The layer is in the interactive layer 4: configuration 'according to obtain the desired multilayer composite material. In the foregoing process, in order to promote the fixed molding efficiency of the mixed material, an appropriate amount of organic peroxide may be added during the process of the material, for example: 7 (leg hidden) resin can use dialkyl organic peroxide as a bridging agent (cmsslinker, or aging 13 200800606, agent); and the ratio of the organic peroxide blended in α 1 ~ 5% It It is more suitable; in addition, the mixed material of organic peroxide mixed in the heat-conducting layer sizing operation, can be tempered by the high temperature and low green color, and the speed is adjusted when the temperature is adjusted to about 250 〇C. The fastest. Tian Zheng* was born in the form of the non-ship Yushe, (4) Explicitly, as far as the skilled person is concerned, after referring to the above description, there can be more improvements and changes, so that /L is the same. Any modifications or variations of the present invention made in the spirit of the present invention should still be included in the scope of the present invention. Immediately afterwards, the characteristics of the mine of the present invention will be determined by - specific compensation _, money - step. [Embodiment] Hereinafter, two types of multilayer absorbing electromagnetic wave materials will be described as an embodiment of the present invention. The first-implementation--two-layer composite acid-adsorbing electromagnetic wave material, as shown in the fifth drawing, the heat-conducting and absorbing electromagnetic wave material comprises a first heat-conducting layer ι and an electromagnetic wave absorbing layer 2, wherein the electromagnetic wave absorbing layer 2 The surface of the first heat conductive layer i is attached to the surface by lamination to form a multi-layer composite planar sheet material. The double-layer double-layer composite guide material Wei-electric hybrid material is heard by the money-making yarn: (1) First, the first heat-conducting layer is formed: A is about oxidized powder of Wo (turning transmissive powder) and About Shi Xisu (Si-resin (optional rubber)' and with about 1% of the dialkyl-based organic peroxide as the cooked side of the shelf __), placed in the mixing tank under the phoenix (about 25 实施The mixed materials are mixed for 3 minutes. 200800606 is inserted into the 'mixing materials.' B. The hot material is turned into a turning target. The forming is made into a thickness of about 0.02~15mm. The planar thin layer, and by the molecular structure of the rubber material, the uniformly distributed thermal conductive powder can be bonded to the s-position to make the thermally conductive layer have stable thermal conductivity. (2) Again, the electromagnetic wave is The absorbing layer is formed on one surface of the first heat conducting layer · A, about 70% of the iron H silver alloy powder (optional electromagnetic wave absorbing powder) and about 骂 骂 ) ) (Silicon resin) (optional glue) Material) with about 1% dialkyl organic peroxide as a bridging agent (optional curing agent), placed in the mixing tank 'At normal temperature (about 25. 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 The same material can be directly applied to one surface of the first heat conducting layer by spraying or screen printing or hot press forming, and the mixed material is fixedly formed into a thickness of about 〇. The planar thin layer of 〇2~15 is formed by the electromagnetic wave absorbing layer 2 having the same properties as the rubber material of the first heat conducting layer ,, so that the direct molding can be very tightly formed and stabilized. - When the rubber material used in the heat conductive layer i is of different nature or the same property, the above-mentioned mixed material is first applied by means of coating or spraying or screen printing or hot press forming to be fixedly formed into a thickness of about After a planar thin layer of 0.02 to 15 mm, the electromagnetic wave absorbing layer 2 is then laminated or directly formed on one surface of the first thermal conductive layer ι 15 200800606. The second embodiment is a three-layer composite Guide wire absorbing electromagnetic wave material, the guide The absorbing electromagnetic wave material comprises a first heat conductive layer electromagnetic wave absorbing layer 2 and a second heat conductive layer 3 'where the electromagnetic wave absorbing layer 2 is ablatedly bonded to the first heat conductive layer 1 and the second heat conductive layer by the upper and lower surfaces thereof 3, to form a multi-layer composite planar sheet material. The method for manufacturing the multilayer heat conduction and absorption electromagnetic wave material is as follows: (1) First, the first heat conduction layer 1 is formed: A, about 70% of alumina Powder (optional heat-conducting powder) and about 3% of acrylic resin (optional rubber), with about 1% bridging agent (optional curing agent), placed in the mixing tank, at room temperature The lower (about 25. 〇) the mixing materials were subjected to a 30-minute mixing operation to uniformly mix the materials. B. The kneaded material is coated on the release paper p by a coating technique, and the mixed material is gradually fixed to a thickness of about 0·02 to 0.5 mm at a temperature of about 80 to 200 ° C. The layer, according to which a heat transfer layer having a heat transfer coefficient of about UW/mk is obtained. (2) Secondly, the electromagnetic wave absorbing layer 2 is formed: A. About 70% of the iron-nickel-silver alloy powder (the selected electromagnetic wave absorbing powder) is mixed with about 30% of the acrylic resin (the selected rubber material). 1% of the aging agent (the selected curing agent) is placed in the mixing tank, and the mixture is subjected to a 30-minute mixing operation at room temperature (about 25. 均匀 to uniformly mix the materials. B. The kneaded material is coated on the release paper P by a coating technique, and the mixed material is gradually fixed into a planar thin layer having a thickness of about 0Ό2 to 0.5 mm at a temperature of 200800606 and a force of 80 200 C, and is formed. It has an electromagnetic wave absorption attenuation value of about 25 db. (3) Then, a second heat conduction layer 2 is formed: A, about 70% of the alumina powder (optional heat conductive powder) and an acrylic force of about 30 〇/〇. Resin (optional rubber), with about 1% bridging agent (optional curing agent), placed in the mixing tank, and subjected to 30 minutes of mixing operation at room temperature (about 25 ° C). The materials are uniformly mixed. B. The kneaded material is coated by a coating technique. On the paper p, at a temperature of about 80-20 (TC), the mixed material is gradually fixed into a thin layer having a thickness of about 0.02 to 5·5ιηιη, thereby obtaining a heat transfer coefficient of about 1.8 W/mk. (4) Finally, the heat conducting layer and the electromagnetic wave absorbing layer are laminated and integrated with each other: firstly, the first heat conducting layer 1 and the electromagnetic wave absorbing layer 2 are laminated and bonded, and then the electromagnetic wave absorbing layer 2 is peeled off. The release paper p on the top and the second heat conduction layer 3 are laminated and bonded to form a multilayer composite material having heat conduction and absorbing electromagnetic waves (refer to the sixth figure). The multilayer composite material of the present invention is disposed on the electronic component. Between the heat sink or the metal machine member, wherein the double-layer composite heat-conducting and absorbing electromagnetic wave material as shown in FIG. 7 is such that the surface under the first heat-conducting layer is in close contact with the surface of the electronic component 5. And the surface of the electromagnetic wave absorbing layer 2 is closely attached to the heat sink or the metal machine member 6, and the three-layer composite heat conduction and absorption as shown in the eighth figure is transmitted. - the lower surface of the heat conducting layer 1 is in close contact with the The surface of the electronic component 5 and the upper surface of the second heat conducting layer 3 are in close contact with the heat sink or the metal member 6, whereby the heat generated during operation of the electronic component can be transmitted through the heat conducting layer and the electromagnetic wave absorbing layer. Conducting and rapidly transferring heat to the heat sink or metal machine component, and absorbing and suppressing electromagnetic radiation generated by the electronic component itself by the electromagnetic wave absorbing layer of the multilayer composite material and blocking external electromagnetic interference; BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a cross section of a thermally conductive layer showing the bonding state of the rubber and the thermally conductive powder in the material; /Second_thermal conduction riding and heat conduction of the present invention The table shows the variation of the powder mixing ratio and the heat transfer coefficient; the third figure is the indication of the electromagnetic absorption layer: t®, the age in the material • the combination of the coffin and the electromagnetically absorbing powder; Figure 5 is a side view of a first embodiment of the present invention; Second reality Schematic diagram of the side view of the embodiment; ^7 is a schematic diagram of the structure of the double-layer composite material of the first embodiment of the present invention disposed between the electron elements and the heat sink; and the *K diagram of the strain is implemented in the fourth day (four) The structural layer of the layer composite material is disposed between the electron element fins. 18 200800606 Referring to Figure 1, the electron micrograph and molecular structure of the cross section of the thermally conductive layer of the present invention are not intended. Referring to Fig. 2, there is shown an electron microscope image and a molecular structure diagram of a cross section of an electromagnetic wave absorbing layer of the present invention. [Description of main component symbols] First heat conducting layer 1 Electromagnetic wave absorbing layer 2 Second heat conducting layer 3 Release paper P Electronic component 5 Heat sink or metal machine member 6

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Claims (1)

200800606 - X. Patent application scope: 1. A multi-layer composite material with a guide bell for absorbing electromagnetic waves, comprising one or several heat conducting layers and/or a plurality of electromagnetic wave absorbing layers, and the layers are mutually superposed and closely combined to form a Multi-layer composite. 2. The multi-layer composite material with heat conduction and electromagnetic wave absorption mentioned in Item 1 of the patent application scope, and the layer containing the heat conductive powder and the combination of the conductive powder particles. And thoroughly mixing the process to make the heat conduction body evenly distributed in the rubber towel, and then set the mold. The invention relates to a multi-layer composite material with thermal conduction and electromagnetic wave absorption according to the two items mentioned in (4), wherein the thermal conductive powder is alumina powder, aluminum nitride powder, tantalum nitride graphite, Ming powder or copper powder. One of them is a mixture of two or more materials. In the multi-layer complex φ-material/, which has heat conduction and electromagnetic wave absorption according to item 2 of the patent scope, the heat conductive powder is irregular type particles and has an average particle size of about 0.1 to 50 μm. The multi-layer composite material with heat conduction and electromagnetic wave absorption mentioned in Item 2 of the patent scope is as follows: 'The adhesive material is epoxy resin, acrylic resin, acid resin, eucalyptus ♦ urethane resin ( Among them, pVAC), Smc〇n resin or synthetic rubber – or a mixture of two or more materials. [6] The multi-layer composite material having heat conduction and absorbing electromagnetic waves as described in claim 2 of the patent scope of the invention, wherein the heat conductive layer is a planar thin layer having a thickness of 2 to 15 mm. Rj, as described in claim 2, the multi-layer composite of heat conduction and electromagnetic absorption absorption. The material of the heat conduction layer accounts for about 10% by weight of the emblem. 8. The multi-layer composite material having heat conduction and electromagnetic wave absorption according to item 2 of the patent application scope, wherein the rubber material of the heat conduction layer accounts for about 10% to 70% by weight. 9. The multi-layer composite material having heat conduction and absorbing electromagnetic waves according to item J of the patent application scope, wherein the electromagnetic wave absorption layer comprises electromagnetic wave absorbing powder and Xiao Lai, σ sec. electromagnetic; The rubber material and the side mixing process 'make the electromagnetic wave absorbing powder evenly distributed in the rubber material, and then fix the molded person. [10] The multi-layer composite & material having heat conduction and absorbing electromagnetic waves according to claim 9 of the patent scope, wherein the thermal electromagnetic wave absorbing powder system is a dielectric absorbing material, an electromagnetic absorbing material or both dielectric and electromagnetic absorbing properties. A single type of composite powder material or a mixture of two or more materials. (1) The multi-layer complex with heat conduction and electromagnetic wave absorption mentioned in the first paragraph of the patent application scope:; /, the medium-sized electro-absorption material refers to a powder material prepared by adding an electric loss-loss substance to a 13⁄4 molecular medium. . 12: The multi-layer composite of the heat conduction and electromagnetic absorption wave mentioned in the U.S. patent application is a carbon fiber, a conductive carbon black, a carbon carbide, a nano-scale slave, a carbon fiber, a conductive carbon black or Carbide. I3. The multi-layer composite material having heat conduction and absorbing electromagnetic waves according to the invention of claim 5, wherein the dielectric absorbing material has a resistivity σ of between 10 and 3 s/cmM s/cm. 14. A multilayer composite having heat conduction and absorbing electromagnetic waves as described in the first application of the patent application No. 1 (). The electromagnetic absorbing material refers to a powder material made of a magnetic alloy material. 15. A multi-layer composite material having heat conduction and absorbing electromagnetic waves as described in the application scope of the invention, wherein the electromagnetic absorption material is polycrystalline ferrite, hexagonal ferrite, nano-sized ferrite, metal powder. (Hydroxy iron powder, carbonyl iron powder, carbonyl iron-nickel alloy) or magnetic ultrafine powder. 16. A multilayer composite material having heat conduction and absorbing electromagnetic waves as described in claim 1 wherein the composite absorbing material is (Fe-Ni), Fe Ni-Ag Alloy, and silver-nickel alloy Qs^ Ag A11〇y), silver-iron alloy (Fe-Ag AU〇y), iron-alloy-silver alloy (FeNiMo-Ag Alloy) or iron-nickel-cobalt-silver alloy (FeNiCo-Ag Alloy) or iron-based niobium carbide (Fe- Sic). 17. The multilayer composite material having heat conduction and electromagnetic wave absorption according to the first aspect of the invention, wherein the electromagnetic wave absorbing powder is irregular particles and has an average particle size of about 0·03 to 150 μm. Lu 18, the multi-layer composite material with heat conduction and electromagnetic wave absorption as described in claim 9 of the patent scope, wherein the glue material is epoxy resin, acrylic resin, phenolic resin, acrylic acid resin, polyacetate One of resin (PVAC), dicin (8Xun (;11) resin or synthetic rubber or a mixture of two or more materials. 19. Heat transfer cum as described in claim 9 a multilayer composite material that absorbs electromagnetic waves, wherein the electromagnetic wave absorbing layer is a planar thin layer having a thickness of 2 to 15 mm. 20. A multilayering layer having heat conduction and absorbing electromagnetic waves as described in claim 9 of the patent application scope 22 200800606 The electromagnetic wave absorbing powder of the ytterbium and wave absorbing layer accounts for about 21, as described in item 9 of the patent application scope. (4) Gans--the heat and absorption of electromagnetic waves of multi-layer complex 5 material shakes, 'in the '% magnetic wave absorption The layer of squama is about 22 years old, a kind of Keneuwei electric micro (four) money combined with the reading of green 'its contain · the operation of forming the first heat conduction layer A. Put the heat conductive powder and the rubber material into a mixing tank according to the required ratio. According to the _ not _ tearing type _ set under the operating conditions of the 砰, the mixed materials are implemented 15~3 〇 minute kneading operation; B, time cloth or spray or screen printing or hot press forming technology is applied to fix the aforementioned mixed material into a planar thin layer having a thickness of about 〜3~i2mm; The operation of an electromagnetic wave absorbing layer: Materials, of which 30% to 90% by weight. A. The rubber material of the same material as the first heat-conducting layer is selected, and the electromagnetic wave absorbing powder and the rubber material are placed in a mixing tank according to the required ratio, according to different types of rubber materials. Set the mixing material to perform the mixing operation of 15~3〇 minutes under different operating temperature conditions; B. Apply the mixed material directly to the coating or spraying or screen printing or hot press forming technology. On the surface of one of the first heat conducting layers, the mixed material is fixedly formed into a planar thin layer having a thickness of about 0 02 15 mm; and 23 200800606 is further the same as the foregoing using the other plural laminated layers of (10) The forming operation method of the heat conducting layer or the electromagnetic wave absorbing layer, and sequentially, the heat conducting layer and the electromagnetic wave absorbing layer are alternately laminated to obtain a desired multilayer composite material. 23. The method for cracking a multi-layered reed material having heat conduction and absorbing electromagnetic waves according to item 22 of the patent application scope, which further comprises: a glue material used in the first electromagnetic wave absorbing layer and a rubber material used in the first thermal layer In the case of different materials, the electromagnetic wave absorbing body and the age of the rubber material shall be fixed by a technique of coating or tilting or screen printing or hot press forming to form a surface having a thickness of about 0.02 to 15 mm. The thin layer is then attached to the surface of one of the first thermally conductive layers. The method for producing a multilayer composite material for absorbing electromagnetic waves as described in claim 22, which further comprises adding an organic peroxide as a bridging agent to the scale contact of (4). twenty four