CN101769058A - Multilayer microwave unreflected chamber absorbing material filled by loose foam blocks - Google Patents
Multilayer microwave unreflected chamber absorbing material filled by loose foam blocks Download PDFInfo
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- CN101769058A CN101769058A CN 201010122024 CN201010122024A CN101769058A CN 101769058 A CN101769058 A CN 101769058A CN 201010122024 CN201010122024 CN 201010122024 CN 201010122024 A CN201010122024 A CN 201010122024A CN 101769058 A CN101769058 A CN 101769058A
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Abstract
The invention discloses a multilayer microwave unreflected chamber absorbing material filled by loose foam blocks. The absorbing material comprises a hollow cone single body and a hollow box, wherein the hollow box is arranged at the cone bottom of the hollow cone single body, and the cross section of the hollow box is the same as the cone bottom. The hollow cone single body is of an integral structure or a multilayer split-type structure. The conical inner chamber of the integral hollow cone single body is filled with one layer or multilayer of loose microwave absorbing foam blocks to enable the conical inner chamber to be filled with the loose microwave absorbing foam blocks. The inner chamber of the split-type structure at each layer of the multilayer split-type hollow cone single body is respectively filled with the loose microwave absorbing foam blocks. The inner chamber of the hollow box is filled with the loose microwave absorbing foam blocks. Since the same or different loose foam materials are filled in the inner chamber combined by the hollow cone single bodies or multiple bodies layer by layer, the invention has the advantages that the manufacturing of the loose foam materials is convenient, the production cost is low, the microwave absorbency is high because electromagnetic impedance interfaces are formed among layers of different loose foam materials, the dustproof, moisture-proof and mildew-proof effects of the absorbing materials are good and the service life is long.
Description
Technical field
The present invention relates to the microwave absorbing material field, is the sandwich construction type microwave dark room absorbing material that the diffusing piece of a kind of foam is filled specifically.
Background technology
In microwave dark room, absorbing material is installed on metope, ceiling, the ground, when electromagnetic wave incides absorbing material, the overwhelming majority is absorbed, and transmission, reflection are few, do the test of radio communication product such as antenna, radar and electronic product and can avoid noise jamming, improve the precision and the efficient of test.Microwave dark room absorbing material kind is very many, solid foam pyramid absorbing material is the material that the application time the earliest in the absorbing material, range of application is the widest, be widely used in and build anechoic chamber, (no echo chamber, microwave dark room), electric wave camera bellows, inhale the ripple screen and inhale ripple wall etc., the reverberation that is used for the coverage test environment, reduce background noise, eliminate noise jamming, improve measuring accuracy.
Solid foam pyramid absorbing material generally adopts high-quality polyurethane foams material, forms through serial processing and fabricatings such as cutting, dipping carbon black, flame treatment, oven dry.Common solid foam pyramid type microwave dark room absorbing material materials are big, the cost of manufacture height, dipping absorbing material difficulty, PYR foam pyramid inner core in aggregates is difficult to soak into, drying time is long, power consumption consuming time, processing technology complexity and easily aging, cracked is after long-time the use, easily pile up dust between the pyramid foam wave-suction material, be difficult to cleaning, moistureproof, anti-mold effect is poor, influences wave-absorbing effect.
Summary of the invention
Whole PYR foam wave-suction material inner core is difficult to soak into, makes difficulty in the prior art, cost of production is high in order to solve, and it is easily aging, cracked, moistureproof, anti-mold effect is poor, the inconvenience of cleaning dust, deficiencies such as wave-absorbing effect difference, the purpose of this invention is to provide that a kind of processing technology is simple, easy to make, cost of production is low, and dustproof, moistureproof, anti-mold effect is good, the foam that wave-absorbing effect the is good sandwich construction type microwave dark room absorbing material that piece is filled that looses.
In order to achieve the above object, the technical solution used in the present invention is: the sandwich construction type microwave dark room absorbing material that the diffusing piece of a kind of foam is filled, absorbing material comprises the conulite monomer and is arranged at the conulite monomer awl end and cross section and the identical hollow box in the awl end, its technical characterstic is that described conulite monomer is that overall structure or multilayer are divided body structure, integrally-built conulite monomer conical internal cavity is filled the diffusing piece of one or more layers suction ripple foam makes the diffusing piece of suction ripple foam be full of conical internal cavity, every layer of split structure inner chamber of multilayer split structure of hollow cone monomer filled the diffusing piece of full suction ripple foam respectively, and hollow box inner chamber is filled and completely inhaled the diffusing piece of ripple foam; The foam bulk cargo that described multilayer divides body structure to fill is one or more foam bulk cargos.
Described overall structure or multilayer split structure of hollow cone monomer and hollow box are conjoined structure or divide body structure.
Described conulite monomer is hollow pyramid or hollow butt pyramid.
Be provided with dividing plate between the multi-layered foamed diffusing piece of described overall structure conulite monomer inner chamber, every layer of branch intracoelomic cavity mouth of multilayer split structure of hollow cone monomer is equipped with the movable buckle plate of the diffusing piece of encapsulation foam.
Described a plurality of integrally-built conulite monomer is formed the absorbing material group, and absorbing material group disjunctor has the ripple outer cover; A plurality of multilayer split structure of hollow cone monomers are formed the absorbing material group, and the branch body structure of the one deck that exists together of each conulite monomer links into an integrated entity and disjunctor has the ripple outer cover.
During making, at first adopt igelite to make the shell of conulite monomer or many bodies, hollow box, saturating ripple outer cover and base plate; Then high-quality flexible polyurethane particle is processed into the fritter foam bulk cargo less than 1cm, different microwave absorbing materials are flooded in dipping carbon black or layering, make foam bulk cargo drying after the flame treatment; Again dried foam bulk cargo is filled into the inner chamber and the hollow box inner chamber of igelite conulite monomer or many bodies, can fills single dipping carbon black foam bulk cargo or need not absorb the foam bulk cargo that base-material floods by the index request filling; Shell and hollow box with populated cone monomer or many bodies adopts the ripple outer cover to cooperate the base plate encapsulation at last.
After adopting above technical scheme, the invention has the beneficial effects as follows:
1, adopt the flexible polyurethane particle to make the foam bulk cargo, the resource utilization height, cost of production is low; Be processed into the fritter foam bulk cargo less than 1cm, be convenient to flood different microwave absorbing materials such as carbon black, dipping fully easily dries or dries, and processing technology is simple;
2, adopt igelite to make conulite monomer or many body case, saturating ripple outer cover and base plate, conulite monomer shell inner cavity is filled absorbing material and is cooperated the base plate encapsulation by saturating ripple outer cover, again base plate is fixed on roof, metope and the ground of microwave dark room, easy to assembly, the microwave dark room neat appearance; Plastic casing environmental-protecting performance height, dustproof, moistureproof, mildew-resistant, the absorbing material of enclosure is difficult for aging, long service life;
3, filled and process bulk cargo in the shell of conulite monomer or many bodies, has repeatedly reflection-absorption performance between a plurality of close mutually conulite pyramid type, also have repeatedly reflection-absorption performance between the foam bulk cargo of Tian Chonging itself simultaneously, improved microwave absorbing property greatly;
4, in the sandwich construction shell of conulite monomer or many bodies, adopt layering to fill the different carbon dust dipping foam bulk cargo of concentration, between each layer of foam bulk cargo of variable concentrations carbon dust dipping, reach electromagnetic impedance match, further improve microwave absorbing property;
5, in the sandwich construction shell of conulite monomer or many bodies, adopt the foam bulk cargo of filling the different substrate materials dipping, with three layers of hierarchy of conulite is example, the upper strata is the foam bulk cargo of ferrite dipping, the middle level is the foam bulk cargo of Metal Substrate absorbent dipping, lower floor is the foam bulk cargo of carbon dust dipping, last, in, reach electromagnetic impedance match between following three layers, and utilize the higher magnetic conductivity of ferrite, the characteristic of magnetic loss and low-k, and the high magnetic permeability of Metal Substrate absorbent and high magnetic loss characteristic, help improving microwave absorbing property, widen the microwave absorption band, the scope of application is more extensive.
Absorbing material of the present invention is made by the inner chamber filled and process bulk cargo of conulite monomer or the combination of many bodies, utilize the inner chamber layering of conulite monomer or many bodies combination to fill the different foam bulk cargo, each interlayer at the different foam bulk cargo forms the electromagnetic resistivity interface, improved microwave absorbing property greatly, its foam bulk cargo processing technology is simple, easy to make, cost of production is low, absorbing material is dustproof, moistureproof, anti-mold effect is good, long service life.
Description of drawings
Fig. 1 is the structural representation of a kind of conulite monomer of the present invention;
Fig. 2 is the structural representation of absorbing material group embodiment one of the present invention;
Fig. 3 is the structural representation of the another kind of conulite monomer of the present invention;
Fig. 4 is the structural representation of absorbing material group embodiment two of the present invention;
Fig. 5 is the stereochemical structure exploded view of Fig. 4;
Fig. 6 is the structural representation of absorbing material group embodiment three of the present invention.
Among the figure: conulite monomer 1,11, conulite monomer split 111,112,113, absorbing material group 2,21, absorbing material component layers 211,212,213, hollow box 3,31,32, dividing plate 4,41, saturating ripple outer cover 5,51,52,53,54, base plate 6,61, foam bulk cargo 7.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
The sandwich construction type microwave dark room absorbing material that the diffusing piece of foam shown in Figure 1 is filled is an overall structure, mainly comprise conulite monomer 1, hollow box 3, dividing plate 4,41, saturating ripple outer cover 5, base plate 6 and foam bulk cargo 7, conulite monomer 1 is hollow pyramidal structure, conulite monomer 1 bottom is provided with the hollow box 3 in aggregates with conulite monomer 1, conulite monomer 1 inner chamber is by dividing plate 4,41 are separated into three layers of inner chamber, difference filled and process bulk cargo 7 in three layers of inner chamber, be filled with foam bulk cargo 7 in the hollow box 3, foam bulk cargo 7 adopts flexible polyurethane particles dipping carbon blacks or floods different microwave absorbing materials and makes, and fills the identical foam bulk cargo 7 of absorbing property in three layers of inner chamber and the hollow box or fill the different foam bulk cargo 7 of absorbing property respectively in three layers of inner chamber and hollow box; Be filled with the plastics bayonet socket butt joint encapsulation by saturating ripple outer cover 5 and base plate 6 of the conulite monomer of foam bulk cargo and hollow box, base plate can be installed on roof, metope and the ground of microwave dark room through screw.
First embodiment of absorbing material group shown in Figure 2, main absorbing material group 2, hollow box 32, saturating ripple outer cover 51 and base plate 61, absorbing material group 2 is square uniform by nine conulite monomers 1, the bottom of absorbing material group 2 connects hollow box 32, difference filled and process bulk cargo in each conulite monomer of absorbing material group and the hollow box, fill identical foam bulk cargo or the different foam bulk cargo of absorbing property of absorbing property in absorbing material group conulite monomer inner chamber and the hollow box, absorbing material group 2 and hollow box 32 are by saturating ripple outer cover 51 and base plate 61 plastics bayonet socket butt joint encapsulation separately, and base plate can be installed on the roof of microwave dark room through screw, metope and ground.For large-area microwave dark room, absorbing material is installed is adopted absorbing material composition group to install, it is convenient to install, and profile is neat.
The sandwich construction type microwave dark room absorbing material that the diffusing piece of foam shown in Figure 3 is filled is for dividing body structure, mainly comprise conulite monomer 11, hollow box 31, saturating ripple outer cover 5 and base plate 6, conulite monomer 11 is by three conulite monomers split 111,112,113 pyramidal structures of forming, conulite monomer split 113 bottoms of conulite monomer 11 are provided with hollow box 31, three conulite monomers split 111,112,113 and hollow box 31 filled and process bulk cargos respectively, the foam bulk cargo adopts flexible polyurethane particle dipping carbon black or floods different microwave absorbing materials and makes, fill the identical foam bulk cargo of absorbing property in the split of three conulite monomers and the hollow box or in the split of three conulite monomers and hollow box, fill the different foam bulk cargo of absorbing property, the conulite monomer 11 and the hollow box 31 that are filled with the foam bulk cargo are encapsulated by saturating ripple outer cover 5 and base plate 6 plastics bayonet socket butt joint separately, and base plate can be installed on the roof of microwave dark room through screw, metope and ground.
Fig. 4, second embodiment of the group of absorbing material shown in 5, mainly comprise absorbing material group 21, hollow box 32, saturating ripple outer cover 51 and base plate 61, three layers of absorbing material component layers 211 that absorbing material group 2 is made by igelite, 212,213 form, nine conjuncted structures of hollow pyramid that absorbing material component layers 211 is arranged for matrix, absorbing material component layers 212,213 are nine conjuncted structures of hollow truncated pyramid that matrix is arranged, three layers of absorbing material component layers 211,212, the hollow pyramid bottom nozzle that 213 from top to bottom superpose successively makes absorbing material component layers 211 matches and corresponding the setting respectively at the upper port of absorbing material component layers 212 hollow truncated pyramids, the lower port of absorbing material component layers 212 hollow truncated pyramids matches with the upper port of absorbing material component layers 213 hollow truncated pyramids and corresponding the setting formed nine hollow pyramid combinations that matrix is arranged, hollow box 32 is connected in the lower end of absorbing material component layers 213 hollow truncated pyramids, three layers of absorbing material component layers 211,212,213 and hollow box 32 in filled and process bulk cargo respectively, fill the identical foam bulk cargo of absorbing property in three layers of absorbing material component layers inner chamber and the hollow box or in three layers of absorbing material component layers inner chamber and hollow box, fill the different foam bulk cargo of absorbing property respectively, the absorbing material group 21 and the hollow box 32 that are filled with the foam bulk cargo are encapsulated by saturating ripple outer cover 51 and base plate 61 plastics bayonet socket butt joint separately, and base plate can be installed on the roof of microwave dark room through screw, metope and ground.
The 3rd embodiment of absorbing material group shown in Figure 6, mainly comprise absorbing material group 21, hollow box 32, saturating ripple outer cover 52,53,54 and base plate 61, the structure of absorbing material group 21, hollow box 32 is identical with the foregoing description one, absorbing material group 21 is set with ripple outer cover 52,53,54 by three layers of absorbing material component layers 211,212,213 to be formed, and saturating ripple outer cover 54 and base plate 61 are through plastics bayonet socket butt joint encapsulation.
In foam pyramid type microwave dark room material, when material thickness (L) and wavelength (λ) reach 1,2.5,6 than L/ λ the time, the normal-incidence reflection rate just can reach-30dB ,-40dB,-50dB, for the good microwave dark room of the low frequency that requires material (comprising metric wave) absorbent properties, the thickness of material generally will surpass 1 meter, even 2 meters, 3 meters, material soaking is saturating, oven dry is difficult, transport and install inconvenience.The piece filling multilayer textural association that adopt the to loose ripple darkroom absorbing material (see figure 6) that declines has not only solved the saturating and difficult problem of oven dry of dipping, and transportation and install very convenient.
Claims (5)
1. the foam sandwich construction type microwave dark room absorbing material that piece is filled that looses, absorbing material comprises conulite monomer (1) and is arranged at the conulite monomer awl end and cross section and the identical hollow box (3) in the awl end, it is characterized in that: described conulite monomer (1) divides body structure for overall structure or multilayer, integrally-built conulite monomer conical internal cavity is filled the diffusing piece (7) of one or more layers suction ripple foam makes the diffusing piece of suction ripple foam be full of conical internal cavity, every layer of split structure inner chamber of multilayer split structure of hollow cone monomer filled respectively and inhaled the diffusing piece of ripple foam, and hollow box inner chamber is filled and inhaled the diffusing piece of ripple foam.
2. the sandwich construction type microwave dark room absorbing material that the diffusing piece of foam according to claim 1 is filled is characterized in that: described overall structure or multilayer split structure of hollow cone monomer (1) are conjoined structure or branch body structure with hollow box (3).
3. the sandwich construction type microwave dark room absorbing material that the diffusing piece of foam according to claim 1 is filled, it is characterized in that: described conulite monomer (1) is hollow pyramid or hollow butt pyramid.
4. the sandwich construction type microwave dark room absorbing material that the diffusing piece of foam according to claim 1 is filled, it is characterized in that: the multi-layered foamed diffusing interblock of described overall structure conulite monomer (1) inner chamber is provided with dividing plate (4).
5. according to the sandwich construction type microwave dark room absorbing material of the diffusing piece filling of the arbitrary described foam of claim 1 to 4, it is characterized in that: described a plurality of integrally-built conulite monomers are formed the absorbing material groups, and absorbing material group disjunctor has the ripple outer cover; A plurality of multilayer split structure of hollow cone monomers are formed the absorbing material group, and the branch body structure of the one deck that exists together of each conulite monomer links into an integrated entity and disjunctor has the ripple outer cover.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010122024 CN101769058A (en) | 2010-02-12 | 2010-02-12 | Multilayer microwave unreflected chamber absorbing material filled by loose foam blocks |
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| CN 201010122024 CN101769058A (en) | 2010-02-12 | 2010-02-12 | Multilayer microwave unreflected chamber absorbing material filled by loose foam blocks |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995863A (en) * | 2012-12-26 | 2013-03-27 | 东南大学 | Thin composite multiple-layer band gap microwave dark chamber wall body liner |
| CN104901018A (en) * | 2015-06-10 | 2015-09-09 | 张继斌 | Panel with anti-radar detection function |
| CN108016099A (en) * | 2017-12-05 | 2018-05-11 | 大连东信微波技术有限公司 | Absorbing material applied to microwave absorption test darkroom aisle region 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 |
| CN108966619A (en) * | 2018-06-12 | 2018-12-07 | 中国电子科技集团公司第三十三研究所 | A kind of high-performance environment-friendly wave-absorber and preparation method thereof for electromagnetic compatible dark chamber |
| CN109057050A (en) * | 2018-09-18 | 2018-12-21 | 南京波平电子科技有限公司 | A kind of low reflection aisle absorbing material |
| CN109208770A (en) * | 2017-06-30 | 2019-01-15 | 北新集团建材股份有限公司 | A kind of radiation protection sound absorbing plate |
| CN109208772A (en) * | 2017-06-30 | 2019-01-15 | 北新集团建材股份有限公司 | A kind of preparation method of radiation protection sound absorbing plate |
| CN112701492A (en) * | 2020-12-16 | 2021-04-23 | 航天长屏科技有限公司 | Wave-absorbing pyramid made of multilayer hard wave-absorbing material and preparation method thereof |
| CN113488779A (en) * | 2021-06-29 | 2021-10-08 | 电子科技大学 | Thermoplastic filler wave-absorbing cone structure and manufacturing method thereof |
| CN113839220A (en) * | 2020-06-24 | 2021-12-24 | 河南兄弟科技发展有限公司 | Electromagnetic wave reflection structure |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995863A (en) * | 2012-12-26 | 2013-03-27 | 东南大学 | Thin composite multiple-layer band gap microwave dark chamber wall body liner |
| CN104901018A (en) * | 2015-06-10 | 2015-09-09 | 张继斌 | Panel with anti-radar detection function |
| CN104901018B (en) * | 2015-06-10 | 2017-09-26 | 张继斌 | A kind of panel with counter radar detecting function |
| CN109208770A (en) * | 2017-06-30 | 2019-01-15 | 北新集团建材股份有限公司 | A kind of radiation protection sound absorbing plate |
| CN109208772A (en) * | 2017-06-30 | 2019-01-15 | 北新集团建材股份有限公司 | A kind of preparation method of radiation protection sound absorbing plate |
| CN108016099A (en) * | 2017-12-05 | 2018-05-11 | 大连东信微波技术有限公司 | Absorbing material applied to microwave absorption test darkroom aisle region and preparation method thereof |
| CN108134213B (en) * | 2017-12-22 | 2020-09-11 | 航天科工武汉磁电有限责任公司 | Wide-frequency-band composite wave absorber and application 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 |
| CN108966619A (en) * | 2018-06-12 | 2018-12-07 | 中国电子科技集团公司第三十三研究所 | A kind of high-performance environment-friendly wave-absorber and preparation method thereof for electromagnetic compatible dark chamber |
| CN109057050A (en) * | 2018-09-18 | 2018-12-21 | 南京波平电子科技有限公司 | A kind of low reflection aisle absorbing material |
| CN113839220A (en) * | 2020-06-24 | 2021-12-24 | 河南兄弟科技发展有限公司 | Electromagnetic wave reflection structure |
| CN112701492A (en) * | 2020-12-16 | 2021-04-23 | 航天长屏科技有限公司 | Wave-absorbing pyramid made of multilayer hard wave-absorbing material and preparation method thereof |
| CN113488779A (en) * | 2021-06-29 | 2021-10-08 | 电子科技大学 | Thermoplastic filler wave-absorbing cone structure and manufacturing method thereof |
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Open date: 20100707 |