CN102427713B - Wave adsorption sheet formed by carbon fiber endless tows in flexural arrangement form and preparation method thereof - Google Patents
Wave adsorption sheet formed by carbon fiber endless tows in flexural arrangement form and preparation method thereof Download PDFInfo
- Publication number
- CN102427713B CN102427713B CN201110288292.XA CN201110288292A CN102427713B CN 102427713 B CN102427713 B CN 102427713B CN 201110288292 A CN201110288292 A CN 201110288292A CN 102427713 B CN102427713 B CN 102427713B
- Authority
- CN
- China
- Prior art keywords
- carbon fiber
- fiber filament
- filament bundle
- wave
- flexural
- 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.)
- Expired - Fee Related
Links
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention provides a wave adsorption sheet formed by carbon fiber endless tows in a flexural arrangement form and a preparation method thereof. The wave adsorption sheet formed by the carbon fiber endless tows in the flexural arrangement form is characterized by comprising at least one layer of wave adsorption slices; and each wave adsorption slice comprises a substrate and the carbon fiber endless tows in the flexural wave form. The preparation method of the wave adsorption sheet is characterized by comprising the following steps of: drawing grid lines on high polymer foamed sheets by a marking pen; slantingly punching holes according to the grid lines; and inserting the carbon fiber endless tows into the high polymer foamed sheets in the flexural wave form according to the holes punched in the high polymer foamed sheets. Compared with the prior art, the wave adsorption sheet formed by the carbon fiber endless tows in the flexural arrangement form and the preparation method thereof have the advantages that carbon fibers exist in the flexural wave form, the electromagnetic wave shielding effect is obvious, few materials are used, and the shielding efficiency is high; the preparation method is simple and convenient and can be directly used for preparing a large-area sheet; and the wave adsorption sheet is light and can be used for a lining material of an electromagnetic wave radiation protective clothing and a decorative shielding material with a light structure.
Description
Technical field
The present invention relates to suction wave plate material of a kind of carbon fiber filament bundle flexing arrangement and preparation method thereof, belong to electromagnetic shielding material technical field.
Background technology
Due to the made rapid progress of science and technology and widely using of computer equipment, radio telephone, communication equipment, network and high-frequency device, the problems demand of the Environmental security caused thus solves.The health of the electromagnetic pollution meeting serious harm mankind and other biology, and serious harm is caused to the normal operation of communication apparatus and electric/electronic device, this all needs protection.To the protection of human body, the improvement of the wave absorbtion especially carried out for object with fabric has numerous report, but is mostly the selection of material building form and proportioning thereof.As patent: adopt the conductive fiber mixing different proportion to make woven, weft-knitted and three-dimensional Electromagnetically shielding fabrics in the U.S.Pat. 4684762 of Harry F. Glatfelter.
The absorbing property of the composite material that carbon fiber and carbon nanomaterial mix as component is existing to be discussed, both at home and abroad about the patent of invention of absorbing material mostly is the composite material or the individual layer of rigidity, the composite material of multilayer that extraordinary carbon fiber mixes.As a kind of electro-magnetic wave absorption device in patent U.S.Pat. 7471233B2, bottom inhales ripple effect magnetic loss material for having, and is that a top has aperture and electric conducting material in hollow taper on this; Electromagnetic wave darkroom ceiling and wall adopt this kind of absorbing material, proves that its suction wave number in 30MHz ~ 18GHz frequency range reaches 20dB in the place from darkroom 10m through site attenuation experiment.Patent EP 1912487A1 is using ultrafine carbon fiber as negative magnetoresistance material with the ratio filled composite materials of 0.1% ~ 20%, and result carbon fiber lay thickness 0.105mm, when frequency is 5GHz, reaches-13dB to electromagnetic pad value; When carbon fiber or carbon nano-fiber with stepped construction lay thickness for 0.8mm, when frequency is 2.1GHz, reach-20 ~-29dB to electromagnetic decay, when lay thickness reaches 9mm, it has the decay of-20 ~-35dB under 60GHz.The multilayer materials of patent US 0148626A1, its unique distinction be to comprise in composite material a laminar structure to be mixed with 0.3% ~ 3% diameter be 8 μm of length is that the carbon fiber non-woven (similar carbon felt) of 40mm metallic fiber adopts iron, aluminium, copper or their alloy as suction ripple layer and bottom metal layers, material is up to-46dB at 9.5GHz place to electromagnetic decay.Patent CN 1730555A by the short activated carbon fiber filled composite materials of the 5 ~ 50mm of 0.5% ~ 3%, it is up to-14dB at 8GHz place to electromagnetic decay.Patent 201544500U adopts Multilayer Microwave Absorption Materials to prepare the flexible flat cable FFC of a kind of characteristic impedance control.There is no in prior art and the existing forms of carbon fiber filament bundle and arrangement mode are studied.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of suction wave plate material with special carbon fiber existing forms and preparation method thereof, and described special carbon fiber filament bundle existing forms can make the shielding electromagnetic waves usefulness of low-frequency range and high band be improved.
In order to solve the problems of the technologies described above, the invention provides the suction wave plate material of a kind of carbon fiber filament bundle flexing arrangement, comprise at least one deck and inhaling wave plate, it is characterized in that, the carbon fiber filament bundle that described suction wave plate comprises base material and exists with flexural wave form.
Preferably, the described carbon fiber filament bundle existed with flexural wave form interts in described base material.
Preferably, described multiple carbon fiber filament bundles existed with flexural wave form equidistantly arrange in the substrate, and the plane orthogonal at each carbon fiber filament bundle place is in base material.
Preferably, the spacing d of described carbon fiber filament bundle is 0.5:1 ~ 4:0.5 with the ratio of needle gage λ.
Preferably, the wave amplitude of described carbon fiber filament bundle
hequal the total thickness t of base material.
Preferably, described base material is high polymer foamed sheet, is preferably one or more the laminated sheet in polystyrene (PS) foamed sheet, polypropylene (PP) foamed sheet and polyvinyl chloride (PVC) foamed sheet.
Present invention also offers the preparation method of the suction wave plate material of above-mentioned carbon fiber filament bundle flexing arrangement, it is characterized in that, be included on base material with the grid line that marking pen draws, and tilt to punch by this grid line, according to the eyelet that base material is accomplished fluently, carbon fiber filament bundle is punctured in base material with flexural wave form.
Preferably, the ratio between the line space of described grid line and column pitch is 0.1:2 ~ 10:0.1.
Preferably, the angle of described punching is identical with sinusoidal wave inclination angle.
Preferably, described carbon fiber filament bundle, before interting, carries out starching process with epoxy resin, to improve its resistance to wear.
Compared with prior art, the invention has the advantages that:
(1) carbon fiber is to exist with flexural wave form, and the electromagnetic shielding effect of low-frequency range and high band is remarkable, and materials are few, and shield effectiveness is high;
(2) method for making is easy, can be directly used in the preparation of large area sheet material;
(3) lightweight, can be used for the decoration barrier material of anti-electromagnetic radiation protective garment lining material and light structure.
The present invention can also replace carbon fiber filament bundle with metallic fiber and other conductive fibers, because these fibers are more easily shaped, can expand its application thus.
Accompanying drawing explanation
Fig. 1 is the suction wave plate material 3 d effect graph of carbon fiber filament bundle flexing arrangement;
Fig. 2 is the electromagnetic shielding effectiveness curve of the complex structure body of carbon filament/PS foamed sheet;
Fig. 3 is the electromagnetic shielding effectiveness curve of the complex structure body of carbon filament/PVC foam sheet.
In figure:
n---the number of plies of foamed sheet;
t---the gross thickness of foamed sheet;
h---the wave amplitude of flexural wave;
The thickness of H---foamed sheet;
d---the spacing of carbon fiber filament bundle;
λ---needle gage, i.e. flexural wave wavelength.
Embodiment
Further illustrate the present invention below in conjunction with embodiment, but do not limit content of the present invention.
Embodiment 1
Raw materials used is commercial polypropylene nitrile (PAN) base carbon fibre endless tow, 200tex/3000F; Commercially available PS foamed sheet.
As shown in Figure 1, for the suction wave plate material 3 d effect graph of carbon fiber filament bundle flexing arrangement, the suction wave plate material of described carbon fiber filament bundle flexing arrangement comprises 2 layers of PS foamed sheet 1, multiple carbon fiber filament bundle 2 existed with flexural wave form is interspersed with in PS foamed sheet 1, described multiple carbon fiber filament bundles 2 existed with flexural wave form are in the arrangement of PS foamed sheet 1 intermediate reach, and the plane orthogonal at each carbon fiber filament bundle 2 place is in PS foamed sheet 1.
The PS foamed sheet of purchase is cut into and is of a size of 30cm ' 30cm specification, get two panels naturally align and be stacked together (
n=2), the gross thickness of two-layer PS foamed sheet 1
tbe equal to the wave amplitude of flexural wave
hbe equal to 2H, wherein H is the thickness of PS foamed sheet 1, H=1.66mm.The spacing d getting carbon fiber filament bundle 2 is 2mm; Needle gage is
λ=2
d=4mm.Carbon fiber is without the need to pre-treatment, PS foamed sheet 1 finishes grid line with marking pen, ratio between the line space of grid line and column pitch is 1:1, tilt to punch by this grid line, the angle of punching is identical with sinusoidal wave inclination angle, adopt wire needle to be punctured in PS foamed sheet 1 along the direction of the row of grid line with form one on the other with carbon fiber filament bundle 2, carbon fiber filament bundle 2 exists with flexural wave form.For the wavelength of the flexural wave form and flexural wave that ensure carbon fiber filament bundle 2 and wave amplitude are uniformities at PS foamed sheet 1, now tension force wants consistent.
As shown in Figure 2, be electromagnetic shielding effectiveness (EMSE, the electro-magnetic shielding efficiency) curve of the complex structure body of carbon filament/PS foamed sheet, it is when 1900MHz, and EMSE value is up to 18.02dB.And the EMSE-frequency curve of PS foamed sheet is almost horizontal line, and be in low level.
Embodiment 2
Raw materials used is commercial polypropylene nitrile (PAN) base carbon fibre endless tow, 200tex/3000F; Commercially available PVC foam sheet.The suction wave plate material of carbon fiber filament bundle flexing arrangement comprises 3 layers of PVC foam sheet, multiple carbon fiber filament bundle existed with flexural wave form is interspersed with in PVC foam sheet, described multiple carbon fiber filament bundles existed with flexural wave form are in the arrangement of PVC foam sheet intermediate reach, and the plane orthogonal at each carbon fiber filament bundle place is in PVC foam sheet.
The PVC foam sheet of purchase is cut into and is of a size of 30cm ' 30cm specification, get three naturally alignment be stacked together (
n=3), the gross thickness of two-layer PVC foam sheet
tbe equal to the wave amplitude of flexural wave
hbe equal to 3H, wherein H is the thickness of PVC foam sheet.The spacing d getting carbon fiber filament bundle is 2mm, is a needle gage longitudinally getting three little lattice of pros
, make
d=6mm,
=12mm.To the surface-coated epoxy resin sizing agent of carbon fiber filament bundle to improve its resistance to wear, PVC foam sheet finishes grid line with marking pen, ratio between the line space of grid line and column pitch is 1:1, tilt to punch by this grid line, the angle of punching is identical with sinusoidal wave inclination angle, adopt wire needle to be punctured in PVC foam sheet along the direction of the row of grid line with form one on the other with carbon fiber filament bundle, carbon fiber filament bundle exists with flexural wave form.
As shown in Figure 3, be electromagnetic shielding effectiveness (EMSE, the electromagnetic shielding efficiency) curve of the complex structure body of carbon filament/PVC foam sheet, it is when 400MHz, and EMSE value is up to 10.89dB.And the EMSE-frequency curve of PVC foam sheet is almost horizontal line, and be in low level.
Claims (7)
1. a suction wave plate material for carbon fiber filament bundle flexing arrangement, comprises at least one deck and inhales wave plate, it is characterized in that, the carbon fiber filament bundle that described suction wave plate comprises base material and exists with flexural wave form; Described interts in described base material with the carbon fiber filament bundle of flexural wave form existence; Described base material is high polymer foamed sheet, and described high polymer foamed sheet is one or more the laminated sheet in foamed polystyrene sheet, polypropylene expanded and foam polyvinyl chloride sheet; Described multiple carbon fiber filament bundles existed with flexural wave form equidistantly arrange in the substrate, and the plane orthogonal at each carbon fiber filament bundle place is in base material.
2. the suction wave plate material of carbon fiber filament bundle flexing arrangement as claimed in claim 1, it is characterized in that, the spacing d of described carbon fiber filament bundle is 0.5:1 ~ 4:0.5 with the ratio of needle gage λ.
3. the suction wave plate material of carbon fiber filament bundle flexing arrangement as claimed in claim 1, it is characterized in that, the wave amplitude h of described carbon fiber filament bundle equals the total thickness t of base material.
4. the preparation method of the suction wave plate material of the carbon fiber filament bundle flexing arrangement according to any one of claim 1-3, it is characterized in that, be included on base material with the grid line that marking pen draws, and tilt to punch by this grid line, according to the eyelet that base material is accomplished fluently, carbon fiber filament bundle is punctured in base material with flexural wave form.
5. the suction wave plate material of carbon fiber filament bundle flexing arrangement as claimed in claim 4, it is characterized in that, the ratio between the line space of described grid line and column pitch is 0.1:2 ~ 10:0.1.
6. the suction wave plate material of carbon fiber filament bundle flexing arrangement as claimed in claim 4, is characterized in that, the angle of described punching is identical with sinusoidal wave inclination angle.
7. the suction wave plate material of carbon fiber filament bundle flexing arrangement as claimed in claim 4, it is characterized in that, described carbon fiber filament bundle, before interting, carries out starching process with epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110288292.XA CN102427713B (en) | 2011-09-27 | 2011-09-27 | Wave adsorption sheet formed by carbon fiber endless tows in flexural arrangement form and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110288292.XA CN102427713B (en) | 2011-09-27 | 2011-09-27 | Wave adsorption sheet formed by carbon fiber endless tows in flexural arrangement form and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102427713A CN102427713A (en) | 2012-04-25 |
| CN102427713B true CN102427713B (en) | 2015-02-25 |
Family
ID=45961641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110288292.XA Expired - Fee Related CN102427713B (en) | 2011-09-27 | 2011-09-27 | Wave adsorption sheet formed by carbon fiber endless tows in flexural arrangement form and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102427713B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105476137A (en) * | 2015-11-08 | 2016-04-13 | 襄阳精鑫电子设备制造有限公司 | Carbon-fiber-based mesh-cored anti-radiation flexible composite fabric |
| CN114340294B (en) * | 2022-01-14 | 2023-09-12 | 中国电子科技集团公司第十研究所 | Lightweight electromagnetic shielding rack resistant to severe environment |
| CN115500067B (en) * | 2022-09-02 | 2023-08-29 | 苏州申赛新材料有限公司 | Electromagnetic shielding composite material with low-reflection magneto-electric dual-functional gradient structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1732083A (en) * | 2002-12-27 | 2006-02-08 | 东丽株式会社 | Laminate, electromagnetic-shielding molded product and manufacture method thereof |
| CN101531804A (en) * | 2009-04-13 | 2009-09-16 | 天津大学 | Electromagnetic shielding compound material made from three-dimensional braided nickel-plated carbon fiber and epoxy resin and method for preparing same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002111279A (en) * | 2000-10-04 | 2002-04-12 | Japan Wavelock Co Ltd | Electromagnetic wave shield material and its manufacturing method |
-
2011
- 2011-09-27 CN CN201110288292.XA patent/CN102427713B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1732083A (en) * | 2002-12-27 | 2006-02-08 | 东丽株式会社 | Laminate, electromagnetic-shielding molded product and manufacture method thereof |
| CN101531804A (en) * | 2009-04-13 | 2009-09-16 | 天津大学 | Electromagnetic shielding compound material made from three-dimensional braided nickel-plated carbon fiber and epoxy resin and method for preparing same |
Non-Patent Citations (1)
| Title |
|---|
| 碳纤维集合体材料吸波性能研究进展;吴瑜等;《扬州职业大学学报》;20101231;第14卷(第4期);第37-41页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102427713A (en) | 2012-04-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Jagatheesan et al. | Electromagnetic shielding behaviour of conductive filler composites and conductive fabrics–A review | |
| EP1850651A2 (en) | Article including sheet-like electromagnetic shielding structure | |
| Su et al. | Effect of stainless steel-containing fabrics on electromagnetic shielding effectiveness | |
| CN102427713B (en) | Wave adsorption sheet formed by carbon fiber endless tows in flexural arrangement form and preparation method thereof | |
| Jagatheesan et al. | Fabrics and their composites for electromagnetic shielding applications | |
| Li et al. | In situ fabrication of magnetic and hierarchically porous carbon films for efficient electromagnetic wave shielding and absorption | |
| CN113195215B (en) | Fiber reinforced composite lay-up | |
| Safdar et al. | Polymeric textile-based electromagnetic interference shielding materials, their synthesis, mechanism and applications–A review | |
| KR20150047558A (en) | Magnetic field-shielding electromagnetic shielding material | |
| JP2003309395A (en) | Radio wave absorption material | |
| CN205194345U (en) | Electromagenetic wave radiation surface fabric is prevented to bilayer | |
| CN102418232B (en) | Wave-absorbing weaving piece of compound bar with carbon filaments arranged in buckling and extending manner and preparation method thereof | |
| CN103295704A (en) | Nanometer semi-conductive non-woven fabric and processing technology thereof | |
| CN109575832B (en) | Electromagnetic radiation resistant isolation board for electric working room | |
| CN210537247U (en) | Electromagnetic shielding structure | |
| CN102427712B (en) | Mosaic-spiced electromagnetic shielding sheet and preparation method thereof | |
| CN102320179B (en) | Electro-magnetic shielding sheet with long carbon fiber tows inlaid and arranged into strip grid and preparation method | |
| CN102625647A (en) | Carbon filament bundle looped pile and extension arranged compound wave-absorbing shielding sheet, as well as processing technology and usage thereof | |
| CN102427711B (en) | Electromagnetic shielding sheet with flexural and unbent composite arrangement of carbon fiber endless tow and preparation thereof | |
| CN205272743U (en) | A inhale ripples membrane for communication product | |
| JP2006002429A (en) | Radio wave-sound wave absorbing thermal insulation body | |
| JP4357955B2 (en) | Radio wave absorber | |
| CN112300598A (en) | Carbon fiber electromagnetic wave inhibiting material | |
| JPH0544149A (en) | Non-oriented nonwoven fabric and its production | |
| JP4226140B2 (en) | Non-combustible radio wave absorbing felt and felt with composite panel and metal foil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20200927 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |