CN114771045A - Wave-absorbing composite carbon fiber plate - Google Patents

Wave-absorbing composite carbon fiber plate Download PDF

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Publication number
CN114771045A
CN114771045A CN202210542338.4A CN202210542338A CN114771045A CN 114771045 A CN114771045 A CN 114771045A CN 202210542338 A CN202210542338 A CN 202210542338A CN 114771045 A CN114771045 A CN 114771045A
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China
Prior art keywords
carbon fiber
layer
wave
composite carbon
stirring
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Pending
Application number
CN202210542338.4A
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Chinese (zh)
Inventor
康伟
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Chengdu Sanhong Gaoke Technology Co ltd
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Chengdu Sanhong Gaoke Technology Co ltd
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Priority to CN202210542338.4A priority Critical patent/CN114771045A/en
Publication of CN114771045A publication Critical patent/CN114771045A/en
Pending legal-status Critical Current

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    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B32B37/1018—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure using only vacuum
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284—Application of 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
    • 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
    • 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
    • C09J1/00—Adhesives based on inorganic constituents
    • 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
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/008—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with a particular shape
    • 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
    • H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • H05K9/0088—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material structure
    • 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
    • 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
    • B32B2307/212—Electromagnetic interference shielding
    • 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
    • B32B2307/306—Resistant to heat
    • 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
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion

Abstract

The invention provides a wave-absorbing composite carbon fiber plate, which relates to the technical field of high and new materials and comprises a plate body, wherein a carbon fiber layer is arranged on the outer surface of the plate body, a high-temperature layer is arranged on the outer surface of the carbon fiber layer, an adhesive surface layer is arranged on the outer surface of the high-temperature layer, a lossy reflecting layer is arranged on the outer surface of the adhesive surface layer, and a main anti-once loss layer is arranged on the outer surface of the lossy reflecting layer The carbon fiber composite board with wave performance is formed by carbonization, which is beneficial to practical use.

Description

Wave-absorbing composite carbon fiber plate
Technical Field
The invention relates to the technical field of high-tech materials, in particular to a wave-absorbing composite carbon fiber plate.
Background
Along with the development of modern science and technology, the influence of electromagnetic wave radiation on the environment is increasingly increased, in airports, flights cannot take off due to electromagnetic wave interference, in hospitals, mobile communication can interfere the normal work of various electronic diagnostic instruments, meanwhile, the application of the electromagnetic wave guide control in special industries is more important, in order to find a wave-absorbing material which can resist and weaken and eliminate the electromagnetic wave radiation, the wave-absorbing material becomes a big subject of material science, the wave-absorbing material is a functional material which can absorb and attenuate the electromagnetic wave energy projected to the surface of an object, and the electromagnetic wave energy is converted into energy loss in other forms such as heat energy through the medium loss in the modified material, and the wave-absorbing material is composed of an absorbent, an adhesive, a high-temperature assistant and the like, wherein the absorbed electromagnetic property determines the quality of the performance of an absorption coating, and plays a key role in product application, research proves that the carbonyl material iron oxide material has the best performance, has the characteristics of wide absorption frequency band, high absorption frequency and the like, can absorb electromagnetic wave radiation when being applied to electronic equipment, and achieves the functions of eliminating electromagnetic wave interference and eliminating bond magnetic wave reflection.
However, the existing market does not have similar products for absorbing the waves of the carbon fiber plate, and the method for solving the problem of the wave absorption performance of the carbon fiber plate is to spray a layer of paint or coating with the wave absorption performance on the surface of the carbon fiber plate, which has the disadvantages of difficult construction, thin thickness, strong adhesive force, salt mist resistance, corrosion resistance and high impact force requirement on the surface coating of the carbon fiber plate, and the carbon fiber plate cannot be hidden by painting only.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a wave-absorbing composite carbon fiber plate.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a inhale ripples combined material carbon fiber plate, the package rubbing board body, the surface of plate body is provided with the carbon fiber layer, the surface of carbon fiber layer is provided with the high temperature layer, the surface on high temperature layer is provided with the adhesive surface layer, the surface on adhesive surface layer sets up to be had the loss reflection stratum, the surface of loss reflection stratum is provided with the main anti loss layer of once.
The preparation steps of the wave-absorbing composite carbon fiber plate are as follows:
s1: adding n-hexane liquid after flaking carbonyl iron powder, stirring into paste, and then standing for natural defoaming;
s2: adding 2% of tetraethoxysilane and strontium carbonate into the slurry, and stirring in a stirrer under the protection of nitrogen;
s3: standing, naturally defoaming, adding a coupling agent accounting for 3% of the slurry, and stirring at a low speed under the protection of nitrogen while stirring;
s4: under the protection of nitrogen, putting the slurry into an oven for baking;
s5: adding a mixing agent into the prepared modified flaky carbonyl iron powder, stirring, uniformly stirring and curing to form a prepreg adhesive;
s6: and (3) bonding the prepreg layer by layer through an adhesive, and carbonizing the prepreg layer by vacuum pressurization to produce the composite carbon fiber material plate with the wave absorption performance.
In order to mix the slurry, the present invention is improved in that, in step S1, the n-hexane liquid is added in an amount of 99%.
In order to stir the slurry, the invention improves that in step S2, the temperature of the stirrer is controlled at 30 ℃ and the stirring time is 1 h.
In order to fully stir the slurry, the invention improves that in step S3, the low-speed stirring time is 1-2h, and the temperature of the stirrer is controlled at 30 ℃.
In order to age the slurry, the invention improves that in step S4, the baking time is 2-3h, and the oven temperature is 120 ℃.
In order to form the prepreg adhesive, the invention improves that in step S5, the mixing agent is formed by combining a resin coupling agent, a curing agent and a flushing agent.
In order to produce the composite carbon fiber material plate, the invention improves that in step S6, the maximum absorption rate of electromagnetic waves of the composite carbon fiber material plate is-8 dB.
Compared with the prior art, the invention has the advantages and positive effects that,
in the invention, when in actual use, the plate body, the carbon fiber layer, the high-temperature layer, the bonding surface layer, the loss reflecting layer and the main anti-abrasion layer are arranged, so that the surface of the carbonyl iron composite absorption wave powder is crystallized by a crystallization preparation method, and the temperature resistance, the adhesive force, the corrosion resistance and the salt mist resistance of the carbonyl iron composite absorption wave powder are enhanced, thereby preparing the special high-strength colloid composite adhesive material, and the carbon fiber cloth or the prepreg is bonded by the adhesive, one layer is bonded, and the carbon fiber composite plate with wave performance is formed by vacuum pressure baking and carbonization, which is beneficial to actual use.
Drawings
FIG. 1 is a schematic view of the overall structure of a wave-absorbing composite carbon fiber plate provided by the invention;
FIG. 2 is a schematic structural diagram of a plate body in a wave-absorbing composite carbon fiber plate provided by the invention;
FIG. 3 is a flow chart of the preparation steps of the wave-absorbing composite carbon fiber plate provided by the invention.
Illustration of the drawings:
1. a plate body; 2. a carbon fiber layer; 3. a high temperature layer; 4. an adhesive surface layer; 5. a lossy reflective layer; 6. a primary anti-once layer.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
In a first embodiment, please refer to fig. 1-3, the present invention provides a technical solution: the utility model provides a inhale ripples combined material carbon fiber plate, which comprises a plate body 1, the surface of plate body 1 is provided with carbon fiber layer 2, carbon fiber layer 2's surface is provided with high temperature layer 3, high temperature layer 3's surface is provided with adhesive surface layer 4, adhesive surface layer 4's surface sets up to be had and loses reflector layer 5, the surface of loss reflector layer 5 is provided with main anti-once loss layer 6, through in current carbon fiber prepreg, adopt to add and use carbonyl iron powder modified composite material as absorbing the main part material, and through normal atmospheric temperature binder, high temperature binder, laminate prepreg layer upon layer, heat the pressurization carbomorphism and form the novel material of carbon fiber composite sheet that has wave absorption performance, make the maximum absorption rate be close to-15 dB.
In a second embodiment, referring to fig. 1-3, the preparation steps of the wave-absorbing composite carbon fiber plate are as follows:
s1: adding n-hexane liquid after flaking carbonyl iron powder, stirring into paste, and then standing for natural defoaming;
s2: adding 2% of tetraethoxysilane and strontium carbonate into the slurry, and stirring in a stirrer under the protection of nitrogen;
s3: standing for natural defoaming, adding a coupling agent accounting for 3% of the slurry, and stirring at a low speed under the protection of nitrogen gas during stirring;
s4: under the protection of nitrogen, placing the slurry into an oven for baking;
s5: adding a mixing agent into the prepared modified flaky carbonyl iron powder, stirring, uniformly stirring and curing to form a prepreg adhesive;
s6: and (3) bonding the prepreg layer by layer through an adhesive, and carbonizing the prepreg layer by vacuum pressurization to produce the composite carbon fiber material plate with the wave absorption performance.
In step S1, the n-hexane liquid was added in an amount of 99%.
In step S2, the temperature of the stirrer was controlled at 30 ℃ and the stirring time was 1 hour.
In step S3, the low-speed stirring was continued for 1.5 hours while the temperature of the stirrer was controlled at 30 ℃.
In step S4, the baking time is 3h and the oven temperature is 120 ℃.
In step S5, the mixture is a combination of a resin coupling agent, a curing agent, and a flushing agent.
In step S6, the maximum absorption rate of electromagnetic waves of the composite carbon fiber material plate is-8 dB.
In the third embodiment, referring to fig. 1-3, the preparation steps of the wave-absorbing composite carbon fiber plate are as follows:
s1: adding n-hexane liquid after flaking carbonyl iron powder, stirring into paste, and then standing for natural defoaming;
s2: adding 2% of tetraethoxysilane and strontium carbonate into the slurry, and stirring in a stirrer under the protection of nitrogen;
s3: standing, naturally defoaming, adding a coupling agent accounting for 3% of the slurry, and stirring at a low speed under the protection of nitrogen while stirring;
s4: under the protection of nitrogen, putting the slurry into an oven for baking;
s5: adding a mixing agent into the prepared modified flaky carbonyl iron powder, stirring, uniformly stirring and curing to form a prepreg adhesive;
s6: and (3) bonding the prepreg layer by layer through an adhesive, and carbonizing the prepreg layer by vacuum pressurization to produce the composite carbon fiber material plate with the wave absorption performance.
In step S1, the n-hexane liquid was added in an amount of 99%.
In step S2, the temperature of the stirrer was controlled at 30 ℃ and the stirring time was 1 hour.
In step S3, the low-speed stirring was continued for 2 hours, and the temperature of the stirrer was controlled to 30 ℃.
In step S4, the baking time was 2.8h and the oven temperature was 120 ℃.
In step S5, the mixture is a combination of a resin coupling agent, a curing agent, and a flushing agent.
In step S6, the maximum absorption rate of the electromagnetic wave of the composite carbon fiber material sheet is-8 dB.
The working principle is as follows: by arranging the plate body 1, the carbon fiber layer 2, the high-temperature layer 3, the adhesive surface layer 4, the loss reflecting layer 5 and the main anti-abrasion layer 6, carbonyl iron powder modified composite materials are added into the existing carbon fiber prepreg as wave-absorbing main body materials, the carbon fiber prepreg is adhered layer by layer through normal-temperature adhesive and high-temperature adhesive, and finally the novel carbon fiber composite plate material with the wave-absorbing performance is formed through heating, pressurizing and carbonizing, the maximum absorption rate is close to-15 dB, and the carbon plate adhesive is replaced, so that the wave-absorbing function of a new product is increased under the condition that the original process route, process procedure and product weight of an old product are not increased.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.

Claims (8)

1. The utility model provides a inhale ripples combined material carbon fiber plate, includes plate body (1), its characterized in that: the outer surface of the plate body (1) is provided with a carbon fiber layer (2), the outer surface of the carbon fiber layer (2) is provided with a high-temperature layer (3), the outer surface of the high-temperature layer (3) is provided with an adhesive surface layer (4), the outer surface of the adhesive surface layer (4) is provided with a loss reflection layer (5), and the outer surface of the loss reflection layer (5) is provided with a main anti-loss layer (6).
2. The wave-absorbing composite carbon fiber plate according to claim 1, which is prepared by the following steps:
s1: the carbonyl iron powder is flaked and then added with n-hexane liquid, stirred into paste, and then is subjected to static natural defoaming;
s2: adding 2% of tetraethoxysilane and strontium carbonate into the slurry, and stirring in a stirrer under the protection of nitrogen;
s3: standing, naturally defoaming, adding a coupling agent accounting for 3% of the slurry, and stirring at a low speed under the protection of nitrogen while stirring;
s4: under the protection of nitrogen, putting the slurry into an oven for baking;
s5: adding a mixing agent into the prepared modified flaky carbonyl iron powder, stirring, uniformly stirring and curing to form a prepreg adhesive;
s6: and (3) bonding the prepreg layer by layer through an adhesive, and carbonizing the prepreg layer by vacuum pressurization to produce the composite carbon fiber material plate with the wave absorption performance.
3. The wave-absorbing composite carbon fiber plate according to claim 2, characterized in that: in step S1, the n-hexane liquid was added in an amount of 99%.
4. The wave-absorbing composite carbon fiber plate according to claim 2, characterized in that: in step S2, the temperature of the stirrer is controlled at 30 ℃ and the stirring time is 1 h.
5. The wave-absorbing composite carbon fiber plate according to claim 2, characterized in that: in step S3, the low-speed stirring time is 1-2h, and the temperature of the stirrer is controlled at 30 ℃.
6. The wave-absorbing composite carbon fiber plate according to claim 2, characterized in that: in step S4, the baking time is 2-3h, and the oven temperature is 120 ℃.
7. The wave-absorbing composite carbon fiber plate according to claim 2, characterized in that: in step S5, the mixture is a combination of a resin coupling agent, a curing agent, and a flushing agent.
8. The wave-absorbing composite carbon fiber plate according to claim 2, characterized in that: in step S6, the maximum absorption rate of the electromagnetic wave of the composite carbon fiber material plate is-8 dB.
CN202210542338.4A 2022-05-18 2022-05-18 Wave-absorbing composite carbon fiber plate Pending CN114771045A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN202210542338.4A CN114771045A (en) 2022-05-18 2022-05-18 Wave-absorbing composite carbon fiber plate

Publications (1)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101913854A (en) * 2010-08-18 2010-12-15 重庆大学 Preparation method of nanometer strontium ferrite magnetic powder
CN108101530A (en) * 2017-12-29 2018-06-01 无锡天宝电机有限公司 A kind of motor magnetic material and preparation method thereof
CN109526192A (en) * 2018-11-07 2019-03-26 中国航发北京航空材料研究院 Wave suction composite material
CN110819971A (en) * 2019-11-18 2020-02-21 哈尔滨工业大学（威海） Based on SiO2Preparation method of coated carbonyl iron powder composite wave-absorbing material
US20200376798A1 (en) * 2019-05-29 2020-12-03 Qingdao university of technology Embedded co-cured composite material with large-damping and electromagnetic wave absorbing properties and preparation method and application thereof
CN113388231A (en) * 2021-06-30 2021-09-14 航天特种材料及工艺技术研究所 Anti-rust carbonyl iron powder wave-absorbing material and preparation method thereof
CN113681942A (en) * 2021-08-24 2021-11-23 航天特种材料及工艺技术研究所 Co-curing wave-absorbing composite material and preparation method thereof
CN113696567A (en) * 2021-08-20 2021-11-26 航天科工武汉磁电有限责任公司 High-temperature-resistant broadband wave-absorbing/bearing composite material and preparation method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101913854A (en) * 2010-08-18 2010-12-15 重庆大学 Preparation method of nanometer strontium ferrite magnetic powder
CN108101530A (en) * 2017-12-29 2018-06-01 无锡天宝电机有限公司 A kind of motor magnetic material and preparation method thereof
CN109526192A (en) * 2018-11-07 2019-03-26 中国航发北京航空材料研究院 Wave suction composite material
US20200376798A1 (en) * 2019-05-29 2020-12-03 Qingdao university of technology Embedded co-cured composite material with large-damping and electromagnetic wave absorbing properties and preparation method and application thereof
CN110819971A (en) * 2019-11-18 2020-02-21 哈尔滨工业大学（威海） Based on SiO2Preparation method of coated carbonyl iron powder composite wave-absorbing material
CN113388231A (en) * 2021-06-30 2021-09-14 航天特种材料及工艺技术研究所 Anti-rust carbonyl iron powder wave-absorbing material and preparation method thereof
CN113696567A (en) * 2021-08-20 2021-11-26 航天科工武汉磁电有限责任公司 High-temperature-resistant broadband wave-absorbing/bearing composite material and preparation method thereof
CN113681942A (en) * 2021-08-24 2021-11-23 航天特种材料及工艺技术研究所 Co-curing wave-absorbing composite material and preparation method thereof

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