CN106626619A - Microwave-absorbing composite material loaded with round patch metamaterial - Google Patents

Microwave-absorbing composite material loaded with round patch metamaterial Download PDF

Info

Publication number
CN106626619A
CN106626619A CN201611117384.0A CN201611117384A CN106626619A CN 106626619 A CN106626619 A CN 106626619A CN 201611117384 A CN201611117384 A CN 201611117384A CN 106626619 A CN106626619 A CN 106626619A
Authority
CN
China
Prior art keywords
layer
composite material
wave
metamaterial
electrical loss
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.)
Granted
Application number
CN201611117384.0A
Other languages
Chinese (zh)
Other versions
CN106626619B (en
Inventor
黄大庆
程红飞
周卓辉
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.)
BEIJING INSTITUTE OF AERONAUTICAL MATERIALS CHINA AVIATION INDUSTRY GROUP Corp
Original Assignee
BEIJING INSTITUTE OF AERONAUTICAL MATERIALS CHINA AVIATION INDUSTRY GROUP Corp
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 BEIJING INSTITUTE OF AERONAUTICAL MATERIALS CHINA AVIATION INDUSTRY GROUP Corp filed Critical BEIJING INSTITUTE OF AERONAUTICAL MATERIALS CHINA AVIATION INDUSTRY GROUP Corp
Priority to CN201611117384.0A priority Critical patent/CN106626619B/en
Publication of CN106626619A publication Critical patent/CN106626619A/en
Application granted granted Critical
Publication of CN106626619B publication Critical patent/CN106626619B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered 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
    • B32B5/02Layered 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00Layered 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered 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
    • B32B5/22Layered 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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24Layered 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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26Layered 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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00Layers arrangement
    • B32B2250/20All layers being fibrous or filamentary
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00Coating on the layer surface
    • B32B2255/02Coating on the layer surface on fibrous or filamentary layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02Composition of the impregnated, bonded or embedded layer
    • B32B2260/021Fibrous or filamentary layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04Impregnation, embedding, or binder material
    • B32B2260/046Synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10Inorganic fibres
    • B32B2262/101Glass fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/20Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/212Electromagnetic interference shielding

Abstract

The invention belongs to the field of manufacturing of a composite material, a structural microwave-absorbing material and a metamaterial and relates to a microwave-absorbing composite material loaded with a round patch metamaterial. A four-layer discontinuous resistance gradual changing structure is adopted and an adopted absorbent is an electrical loss type absorbent composed of chopped carbon fibers; a resin matrix is epoxy resin; the chopped carbon fibers are uniformly distributed on each layer of glass fiber cloth by adopting a spraying process; the round patch metamaterial is loaded into a wave-transparent layer of a composite material bottom layer, so as to form a metamaterial + wave absorbing layer; the diameter of metamaterial round patches is 24mm to 28mm and the distance between the metamaterial round patches is 3.5mm to 4.5mm. The round patch metamaterial is added into an electrical loss microwave-absorbing laminate composite material to prepare the microwave-absorbing material with a high frequency and low frequency combination performance; the electrical loss microwave-absorbing composite material adopts a multilayered structural design comprising the wave-transparent layer and an electrical loss layer; optimization of impedance matching and absorption can be realized and an absorption frequency band is effectively widened.

Description

A kind of Wave suction composite material of loading circular patch Meta Materials
Technical field
The invention belongs to manufacture with composite and structural wave-absorbing material and Meta Materials field, it is related to a kind of loading circle The Wave suction composite material of shape paster Meta Materials.
Background technology
Wave suction composite material is mainly made up of absorbent, resin matrix, cloth of reinforcement fibers.Absorbent mainly includes electrical loss Class absorbent and magnetic loss class absorbent.Electrical loss absorbing material is often good in the performance of high band absorbing property, compared with low-frequency range Absorbing property performance is poor, and this is determined by its electromagnetic parameter feature.Research of the past researchers to electrical loss absorbent It is main to concentrate 8~18GHz band limits.In order that material reaches preferable low frequency absorbing property, past researchers' energy master In concentrating on the research to absorbent.
The content of the invention
The purpose of the present invention is to propose to a kind of design of wideband electrical loss Wave suction composite material for being loaded with Meta Materials and system Standby scheme.
The purpose of the present invention is achieved through the following technical solutions:It is used using the disconnected resistance gradual changing structure of four interlayers Absorbent is electrical loss class absorbent chopped carbon fiber, and its manufacture method is fine with the chopped carbon of T700 types of 3.5~4.5mm of length Tie up as absorbent, wave permeation layer, electrical loss layer, wave permeation layer, the thickness degree ratio of metamaterial layer four are 2.4~2.8:0.3~0.5:0.5~ 0.7:0.2~0.4, resin matrix is epoxy resin, and cloth of reinforcement fibers adopts quartz glass fibre cloth QW220F, chopped carbon fiber Mixed liquor is formed in the epoxy with the dispersion of ratio 0.03~0.04%, using spraying coating process chopped carbon fiber is uniformly distributed On every layer of glass fabric, the fiber cloth number of plies used is 18~22, the 3.8~4.2mm of thickness of composite material for being formed, and is answered Circular patch Meta Materials are loaded with the wave permeation layer of condensation material bottom and form Meta Materials+wave permeation layer, Meta Materials circular patch diameter For 24~28mm, 3.5~4.5mm of spacing.
Absorbent used is electrical loss class absorbent T700 chopped carbon fibers, and its length is 4mm.
Described Wave suction composite material structure is wave permeation layer, electrical loss layer, wave permeation layer, metamaterial layer, four layers of knot of wave permeation layer Structure, thickness ratio is 2.6:0.4:0.6:0.3.
The paster thickness 0.1mm of the circular patch Meta Materials in the middle of composite bottom wave permeation layer, a diameter of 26mm of paster, Spacing 4mm.
Wave suction composite material resin matrix is modified epoxy H603, and cloth of reinforcement fibers is quartz glass fibre cloth QW220F, fiber cloth thickness is 0.22mm, chopped carbon fiber is uniformly distributed on every layer of glass fabric using spraying coating process. The fiber cloth number of plies used is 20, the thickness of composite material 4mm for being formed.
The advantage of technical solution of the present invention is:Circular patch type Meta Materials are added electrical loss to inhale ripple laminate and are combined by the present invention In material, a kind of Wave suction composite material that performance is taken into account with certain low-and high-frequency is obtained, has been had an advantage in that,
1st, electrical loss Wave suction composite material can realize resistance using wave permeation layer, the multi-layer structure design of electrical loss layer is included Anti- matching and the optimization for absorbing, effectively widen absorption band.
2nd, chopped carbon fiber, with light weight, loss mechanism diversification, does not increase suction ripple as a kind of electrical loss absorbent Composite weight, with stronger electromagnetic wave loss ability.
3rd, the structure of Wave suction composite material proposed by the present invention has good wave-sucking performance in S, C, X, KU wave band.
Description of the drawings
Four layer Wave suction composite material structural representations of the Fig. 1 containing Meta Materials.
The schematic diagram of Fig. 2 circular patch Meta Materials.
Four layers of Wave suction composite material reflectance curve of a diameter of 26mm of Fig. 3 pasters.
Four layers of Wave suction composite material reflectance curve of a diameter of 22.3mm of Fig. 4 pasters.
Specific embodiment
Technical solution of the present invention is described in further detail below with reference to example:
Using wave permeation layer 1, electrical loss layer 2, wave permeation layer 1, metamaterial layer 3, the four-layer structure of wave transparent 1 (see Fig. 1), suction used Receipts agent is electrical loss class absorbent chopped carbon fiber.It with chopped carbon fiber is absorbent that its manufacture method is, wave permeation layer, electrical loss Layer, wave permeation layer, the thickness degree ratio of metamaterial layer+wave permeation layer four are 2.6:0.4:0.6:0.3, resin matrix is epoxy resin, is strengthened Fiber cloth is quartz glass fibre cloth, chopped carbon fiber is uniformly distributed on every layer of glass fabric using spraying coating process.Institute The fiber cloth number of plies is 20, the thickness of composite material 4mm for being formed.The a diameter of 26mm of Meta Materials circular patch, spacing 4mm.
Described absorbent be electrical loss class absorbent chopped carbon fiber, length 4mm, model T700
Described composite interlayer structure be wave permeation layer, electrical loss layer, wave permeation layer, metamaterial layer four-layer structure, thickness Than for 2.6:0.4:0.6:0.3.
Described composite resin matrix is epoxy resin, and cloth of reinforcement fibers is quartz fiber cloth QW220F.
Described FSS is formed by the circular patch periodic arrangement of diameter 22mm~28mm.
Example 1
Using wave permeation layer, electrical loss layer, wave permeation layer, metamaterial layer four-layer structure, absorbent used is the suction of electrical loss class Receive agent chopped carbon fiber.It is absorbent with 4mm length, T700 type chopped carbon fibers, wave permeation layer is with electrical loss thickness degree ratio 2.6:0.4:0.6:0.3, resin matrix is epoxy resin, and cloth of reinforcement fibers is quartz glass fibre cloth QW220F, using spraying Technique makes chopped carbon fiber be uniformly distributed on every layer of glass fabric.The fiber cloth number of plies used is 20, and what is formed is compound Material thickness 4mm.The a diameter of 26mm of Meta Materials circular patch, spacing 4mm.Wave suction composite material structural representation such as Fig. 1, inhales ripple Performance curve such as Fig. 3.
Example 2
Using wave permeation layer, electrical loss layer, wave permeation layer, metamaterial layer four-layer structure, absorbent used is the suction of electrical loss class Receive agent chopped carbon fiber.It is absorbent with 4mm length, T700 type chopped carbon fibers, wave permeation layer is with electrical loss thickness degree ratio 2.6:0.4:0.6:0.3, resin matrix is epoxy resin H603, and cloth of reinforcement fibers is quartz glass fibre cloth QW220F, is adopted Spraying coating process makes chopped carbon fiber be uniformly distributed on every layer of glass fabric.The fiber cloth number of plies used is 20, is formed Thickness of composite material 4mm.The a diameter of 22.3mm of Meta Materials circular patch, spacing 3.4mm.Wave suction composite material structural representation is such as Fig. 1, Fig. 2, absorbing property curve such as Fig. 4.

Claims (5)

1. it is a kind of loading circular patch Meta Materials Wave suction composite material, it is characterised in that:Using wave permeation layer, electrical loss layer, thoroughly Ripple layer, metamaterial layer four-layer structure, absorbent used is electrical loss class absorbent chopped carbon fiber, and its manufacture method is with length The chopped carbon fiber of 3.5~4.5mm of degree is absorbent, and four thickness degree ratios are 2.4~2.8:0.3~0.5:0.5~0.7:0.2~ 0.4, resin matrix is epoxy resin, and cloth of reinforcement fibers adopts quartz glass fibre cloth, chopped carbon fiber with ratio 0.03~ 0.04% dispersion forms in the epoxy mixed liquor, makes chopped carbon fiber be uniformly distributed in every layer of glass fibers using spraying coating process On Wei Bu, the fiber cloth number of plies used is 18~22, the 3.8~4.2mm of thickness of composite material for being formed, composite bottom Circular patch Meta Materials are loaded with wave permeation layer and form metamaterial layer, a diameter of 24~28mm of Meta Materials circular patch, spacing 3.5 ~4.5mm.
2. it is according to claim 1 it is a kind of loading circular patch Meta Materials Wave suction composite material, it is characterised in that:It is used Absorbent be electrical loss class absorbent T700 chopped carbon fibers, its length be 4mm.
3. it is according to claim 1 it is a kind of loading circular patch Meta Materials Wave suction composite material, it is characterised in that:It is described Wave suction composite material structure be wave permeation layer, electrical loss layer, wave permeation layer, metamaterial layer four-layer structure, thickness ratio be 2.6:0.4: 0.6:0.3。
4. it is according to claim 1 it is a kind of loading circular patch Meta Materials Wave suction composite material, it is characterised in that:It is compound The paster thickness 0.1mm of the circular patch Meta Materials in the middle of material bottom layer wave permeation layer, a diameter of 26mm of paster, spacing 4mm.
5. it is according to claim 1 it is a kind of loading circular patch Meta Materials Wave suction composite material, it is characterised in that:Inhale ripple Composite resin matrix is modified epoxy H603, and cloth of reinforcement fibers is quartz glass fibre cloth QW220F, and fiber cloth is thick Spend for 0.22mm, chopped carbon fiber is uniformly distributed on every layer of glass fabric using spraying coating process.Scrim cloth used Number is 20, the thickness of composite material 4mm for being formed.
CN201611117384.0A 2016-12-07 2016-12-07 A kind of Wave suction composite material of load circular patch Meta Materials Active CN106626619B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611117384.0A CN106626619B (en) 2016-12-07 2016-12-07 A kind of Wave suction composite material of load circular patch Meta Materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611117384.0A CN106626619B (en) 2016-12-07 2016-12-07 A kind of Wave suction composite material of load circular patch Meta Materials

Publications (2)

Publication Number Publication Date
CN106626619A true CN106626619A (en) 2017-05-10
CN106626619B CN106626619B (en) 2018-08-03

Family

ID=58819112

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611117384.0A Active CN106626619B (en) 2016-12-07 2016-12-07 A kind of Wave suction composite material of load circular patch Meta Materials

Country Status (1)

Country Link
CN (1) CN106626619B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108134213A (en) * 2017-12-22 2018-06-08 航天科工武汉磁电有限责任公司 Wide-band composite wave-absorbing device and its application
CN109835010A (en) * 2017-11-29 2019-06-04 深圳光启岗达创新科技有限公司 A kind of Wave suction composite material and preparation method thereof
CN111854532A (en) * 2019-04-28 2020-10-30 东莞天卫电磁技术有限公司 Stealth bulletproof material and preparation method and application thereof
CN111854533A (en) * 2019-04-28 2020-10-30 东莞天卫电磁技术有限公司 Stealth bulletproof material and preparation method and application thereof
CN112920443A (en) * 2021-02-04 2021-06-08 吉林健特化工机械科技有限公司 Application of chopped strand carbon fiber PP composite material in manufacturing closed loop sampler

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101444979A (en) * 2008-12-30 2009-06-03 北京化工大学 Frequency selection surface wave-absorbing material and preparation method thereof
CN102316711A (en) * 2011-06-22 2012-01-11 东华大学 Wave-absorbing stealthy material with active carbon-fiber felt screen (ACFFS) structure and preparation method thereof
WO2014019514A1 (en) * 2012-07-31 2014-02-06 深圳光启创新技术有限公司 Wide-frequency wave-absorbing metamaterial, electronic device and method for obtaining wide-frequency wave-absorbing metamaterial
CN204796033U (en) * 2015-07-10 2015-11-18 深圳光启高等理工研究院 Inhale super material of ripples and inhale ripples device
US9390702B2 (en) * 2014-03-27 2016-07-12 Acoustic Metamaterials Inc. Acoustic metamaterial architectured composite layers, methods of manufacturing the same, and methods for noise control using the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101444979A (en) * 2008-12-30 2009-06-03 北京化工大学 Frequency selection surface wave-absorbing material and preparation method thereof
CN102316711A (en) * 2011-06-22 2012-01-11 东华大学 Wave-absorbing stealthy material with active carbon-fiber felt screen (ACFFS) structure and preparation method thereof
WO2014019514A1 (en) * 2012-07-31 2014-02-06 深圳光启创新技术有限公司 Wide-frequency wave-absorbing metamaterial, electronic device and method for obtaining wide-frequency wave-absorbing metamaterial
US9390702B2 (en) * 2014-03-27 2016-07-12 Acoustic Metamaterials Inc. Acoustic metamaterial architectured composite layers, methods of manufacturing the same, and methods for noise control using the same
CN204796033U (en) * 2015-07-10 2015-11-18 深圳光启高等理工研究院 Inhale super material of ripples and inhale ripples device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109835010A (en) * 2017-11-29 2019-06-04 深圳光启岗达创新科技有限公司 A kind of Wave suction composite material and preparation method thereof
CN109835010B (en) * 2017-11-29 2021-12-17 深圳光启岗达创新科技有限公司 Wave-absorbing composite material and preparation method thereof
CN108134213A (en) * 2017-12-22 2018-06-08 航天科工武汉磁电有限责任公司 Wide-band composite wave-absorbing device and its application
CN111854532A (en) * 2019-04-28 2020-10-30 东莞天卫电磁技术有限公司 Stealth bulletproof material and preparation method and application thereof
CN111854533A (en) * 2019-04-28 2020-10-30 东莞天卫电磁技术有限公司 Stealth bulletproof material and preparation method and application thereof
CN111854533B (en) * 2019-04-28 2024-01-02 东莞天卫电磁技术有限公司 Stealth bulletproof material and preparation method and application thereof
CN111854532B (en) * 2019-04-28 2024-01-02 东莞天卫电磁技术有限公司 Stealth bulletproof material and preparation method and application thereof
CN112920443A (en) * 2021-02-04 2021-06-08 吉林健特化工机械科技有限公司 Application of chopped strand carbon fiber PP composite material in manufacturing closed loop sampler
CN112920443B (en) * 2021-02-04 2021-11-02 吉林健特化工机械科技有限公司 Application of chopped strand carbon fiber PP composite material in manufacturing closed loop sampler

Also Published As

Publication number Publication date
CN106626619B (en) 2018-08-03

Similar Documents

Publication Publication Date Title
CN106626619A (en) Microwave-absorbing composite material loaded with round patch metamaterial
CN105196638B (en) A kind of broadband absorbing load composite and preparation method thereof
CN106671514B (en) A kind of interruption resistance gradual changing structure Wave suction composite material
CN104404814B (en) Inhale ripple paper and its preparation method and application
CN101364669B (en) Polyethylene reinforced radar cowl of ultra-high molecular weight, preparation and application thereof
CN109664577B (en) Electromagnetic shielding composite material and preparation method thereof
CN110920158A (en) Resin column reinforced broadband wave-absorbing/bearing composite material and preparation method thereof
CN111186186A (en) Double-layer skin wave-absorbing composite material sandwich structure and preparation method thereof
WO2016194671A1 (en) Resin composite material, curing method thereof, and resin molded product
CN111186201A (en) Double-skin wave-absorbing honeycomb sandwich structure and preparation method thereof
CN111186190A (en) Double-layer skin wave-absorbing foam sandwich structure and preparation method thereof
KR101578474B1 (en) Method of manufacturing customized radar absorbing structure having variable electromagnetic characteristics using single composite and Radar absorbing structure thereby
CN108819384A (en) A kind of electromagnetism fiber absorbing material of multilayered structure and preparation method thereof
CN111251673A (en) Chopped fiber reinforced thermoplastic prepreg fabric structure and preparation and application thereof
CN112644103A (en) Broadband wave-absorbing force-bearing composite material and preparation method thereof
CN104499149B (en) A kind of hollow sandwich revolving body fabric and application thereof
CN111086301A (en) Superstructure honeycomb composite wave-absorbing material
CN108189518B (en) Graphene electromagnetic shield cloth and its manufacturing method
CN114621728A (en) High-temperature-resistant broadband wave-absorbing structure composite material and preparation method thereof
CN115230269A (en) Composite heat-resistant foam radar wave-absorbing material and preparation method thereof
CN202463044U (en) Copper-clad plate
CN113696567A (en) High-temperature-resistant broadband wave-absorbing/bearing composite material and preparation method thereof
JP2007096014A (en) Radio wave absorber and its manufacturing method
CN106519579A (en) Fiber felt type wave-absorbing material
CN112880482A (en) Military shelter plate and manufacturing method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant