CN104404814B - Inhale ripple paper and its preparation method and application - Google Patents
Inhale ripple paper and its preparation method and application Download PDFInfo
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- CN104404814B CN104404814B CN201410459537.4A CN201410459537A CN104404814B CN 104404814 B CN104404814 B CN 104404814B CN 201410459537 A CN201410459537 A CN 201410459537A CN 104404814 B CN104404814 B CN 104404814B
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Abstract
The present invention provides a kind of suction ripple paper and its preparation method and application.The wave transparent fiber of fiber-like wave absorbing agent and 5 99.9wt%s of the suction ripple paper bag containing 0.1 95wt%.The present invention by paper technology after fiber-like wave absorbing agent is mixed with wave transparent fiber by being made the paper with absorbing property, inhale ripple paper, it is made up again of above-mentioned suction ripple paper as lattice wall material and inhales ripple sandwich, then ripple sandwich will be inhaled as made from the different suction ripple paper of fiber-like wave absorbing agent content to be separated with wave permeation layer, finally total is impregnated, solidified, that is, obtains absorbing material.The absorbing material wave absorbing efficiency of the present invention is high, absorbing property is stable, absorbs wide frequency range, light weight and excellent strength.
Description
Technical field
The present invention relates to pulp technology for making paper, and in particular to it is a kind of have suction ripple paper and preparation method thereof for inhaling wave energy and
Using.
Background technology
As high frequency electromagnetic radiation is used in radar and communication field more and more widely, pass of the people to electromagnetic shielding
Note is subsisted benefit lifting, requirement to absorbing material also more and more higher.Generally to the composite request of absorbing material for absorption efficiency it is high,
It is high to absorb wide frequency range, light weight, intensity.How to be made while realize the absorbing material of above-mentioned requirements is always area research person
Goal in research.
Absorbing material is divided to by application form can be divided into parastic absorbing material and the major class of structural absorbing mater ials two, wherein posting
Raw type absorbing material is divided into the types such as coating material, adhesive type sheet material, plated film again；And structural absorbing mater ials are divided into laminate type
And sandwiched, they, which have, inhales ripple and carrying dual-use function.Divide radar absorbing to be divided into absorption-type again by absorption mechanism to inhale
Wave material and interference absorbing material, wherein absorption-type absorbing material are that the loss to radar wave absorbs in itself using material, are made
A part of electromagnetic energy is obtained into heat energy loss to fall；And interference absorbing material is using inhaling ripple layer surface back wave and bottom is anti-
The amplitude equal amplitudes of ejected wave conversely carry out interference counteracting, and its thickness need to meet d=λ/4+n λ/2 (wherein n >=0, n are integer),
The absorption band of this kind of absorbing material is narrow.
Microwave absorbing coating refers to using Polymer Solution, emulsion or liquid high polymer as matrix, and wave absorbing agent is added into other
It is distributed to absorbing material prepared by wherein.Traditional microwave absorbing coating generally using the particle with electromagnetic consumable as wave absorbing agent, its
Have the shortcomings that absorption band is narrow, weight is big, adhesion strength is low, weatherability is poor.Other several parastic absorbing materials also have
The shortcomings that similar.And structure Wave suction composite material particularly inhales ripple sandwich material that to have good structural-load-carrying capacity, density concurrently small
The advantages that, Multiple Scattering absorption can be carried out by sandwich absorbent structure to incident electromagnetic wave by inhaling ripple sandwich material in addition, so as to most
Decay to limits and radar wave energy and be derived from excellent broadband absorbing effect, therefore structure, work(can be met well
Energy integral requirement, therefore had broad application prospects in Aeronautics and Astronautics field.
However, traditional suction ripple sandwich material, if cellular sandwich material is mainly using paper honeycomb as matrix, by dipping mixed with
The glue of wave absorbing agent is prepared, and the preparation method complex process, is dispersed in if desired for by wave absorbing agent in glue, and glue
In when containing wave absorbing agent be often difficult to homogeneous impregnation, therefore the gradient control of electromagnetic parameter relatively difficult to achieve is unfavorable for impedance
Optimization with characteristic, thus broadband absorbing effect is unsatisfactory.In addition, suction ripple sandwich material prepared by this method makes for a long time
Easily there is absorbent peeling phenomenon with lower, pollute periphery electromagnetic environment, influence the stability of its absorbing property.
The content of the invention
The shortcomings that it is an object of the invention to overcome prior art, there is provided a kind of that there is the suction ripple paper and its system for inhaling wave energy
Preparation Method and application.The absorbing material wave absorbing efficiency for inhaling ripple paper comprising the present invention is high, absorbing property is stable, it is wide to absorb frequency range,
Light weight and excellent strength.
The purpose of the present invention is achieved through the following technical solutions.
On the one hand, the present invention provides a kind of suction ripple paper, fiber-like wave absorbing agent and 5- of the suction ripple paper bag containing 0.1-95wt%
99.9wt% wave transparent fiber.
Preferably, the fiber-like wave absorbing agent is selected from the magnetic fibre with electromagnetic wave loss function, conductive fiber, dielectric
Fiber and doping fiber type, as polycrystalline iron fiber, nickel fiber, carbon fiber, copper fiber, silicon carbide fibre and SiC/Ti adulterate fiber
In one or more；Preferably, the fiber-like wave absorbing agent is polycrystalline iron fiber.
Preferably, the wave transparent fiber is selected from good inorfil, high-performance synthetic fibers and its pulp of wave, such as right
Position aramid fiber fibrillation dissolving pulp, p-aramid fiber precipitating pulp, meta-aramid fibrillation dissolving pulp, polyparaphenylene's Benzo-dioxazole (PBO)
One or more in fibrillation dissolving pulp and quartz fibre；Preferably, the wave transparent fiber is polyparaphenylene's Benzo-dioxazole
(PBO) fibrillation dissolving pulp.
Preferably, the suction ripple paper also includes granular or irregular shape wave absorbing agent, such as metal dust, carbon black, ceramics
Powder, ferrite powder, tiny balloon etc..
On the other hand, the present invention provides a kind of method for preparing above-mentioned suction ripple paper, and this method comprises the following steps：
(1) the wave transparent fiber of 0.1-95wt% fiber-like wave absorbing agent and 5-99.9wt% is mixed into obtained slurry；
(2) shape the approach flow；
(3) squeeze, dry；
(4) press polish, produce.
Preferably, in the method that ripple paper is inhaled in above-mentioned preparation, in step (1), the fiber-like wave absorbing agent may be selected from having
Have the magnetic fibre of electromagnetic wave loss function, conductive fiber, dielectric fibers and doping fiber type, as polycrystalline iron fiber, nickel fiber,
One or more in carbon fiber, copper fiber, silicon carbide fibre, SiC/Ti doping fibers.It is highly preferred that the fiber-like inhales ripple
Agent is polycrystalline iron fiber, and it has higher magnetic conductivity, and with good, bandwidth strong to electro-magnetic wave absorption of temperature stability etc.
Advantage.
Preferably, in the method that ripple paper is inhaled in above-mentioned preparation, in step (1), the wave transparent fiber may be selected from wave
Good inorfil, high-performance synthetic fibers and its pulp, as p-aramid fiber fibrillation dissolving pulp, p-aramid fiber precipitating pulp,
One or more in position aramid fiber precipitating pulp, polyparaphenylene's Benzo-dioxazole (PBO) fibrillation dissolving pulp, quartz fibre.
It is highly preferred that the wave transparent fiber is polyparaphenylene's Benzo-dioxazole (PBO) fibrillation dissolving pulp, it has excellent
High temperature resistant, resistant to chemical etching, fire resistance and mechanical property.
Preferably, in the method that ripple paper is inhaled in above-mentioned preparation, in step (1), the concentration of the slurry is 0.01-
0.1% (w/v), preferably 0.02-0.05% (w/v).It is unfavorable for the scattered of fiber when concentration is more than 0.1%, easily forms slurry
Group；When concentration is less than 0.01%, most counting machine is not enough to realize and is timely dehydrated；In addition in process of production, slurry is changed
Material concentration generally require to adjust jet-wire ratio simultaneously, excessive concentration or it is too low when need significantly to adjust jet-wire ratio, and when slurry net
The shaping evenness of page will be unfavorable for when speed is than deviateing its optimum value scope.
Preferably, above-mentioned preparation inhale ripple paper method in, in step (2), make the slurry by inclined wire, cylinder or
Long mesh paper making machine Top wire former, or manually handshcet former shapes；It is preferred that the slurry is set to pass through oblique net paper machine Top wire former.
Preferably, in the method that ripple paper is inhaled in above-mentioned preparation, in step (3), drying temperature is 90-120 DEG C, is preferably
105℃。
Preferably, in the method that ripple paper is inhaled in above-mentioned preparation, in step (4), using roll-type calender 50~
Press polish is carried out under the conditions of 300kg/cm line pressures, or press polish is carried out under 10~60MPa pressure conditions using flat-plate compressed ray machine, so as to
Sheet smoothness is improved, adjustment sheet thickness is in favor of the processing of follow-up sandwich.
On the other hand, the present invention provides a kind of suction ripple sandwich, and the suction ripple sandwich is prepared by above-mentioned suction ripple paper；It is preferred that
Ground, the suction ripple sandwich is chevron-shaped sandwich, rhombus sandwich, regular hexagon cellular sandwich or other special-shaped cellular sandwich.
Another aspect, the present invention provide a kind of method for preparing above-mentioned suction ripple sandwich, and this method comprises the following steps：
(1) by the suction ripple paper gluing of the foregoing preparation of the present invention, lamination, compacting, cutting, sandwich is made and folds block；
(2) sandwich for preparing step (1) folds block stretching, sizing, and sandwich block is made；
(3) by the sandwich block impregnating resin of step (2) preparation, solidification, wherein the resin is that thermosetting or thermoplasticity are high
Molecularly Imprinted Polymer, such as phenolic resin, epoxy resin, acrylic resin, polyimide resin；
(4) the sandwich block after step (3) dipping, solidification is cut into slices, produces and inhale ripple sandwich.
Another further aspect, the present invention provide a kind of absorbing material, the absorbing material by least one foregoing suction ripple sandwich or
Preceding method prepare inhale ripple sandwich and at least one wave permeation layer composition absorbing material constructed dip resin, solidification prepare and
Into.
Preferably, in the absorbing material structure, the suction ripple sandwich is alternately arranged with the wave permeation layer.
Preferably, in the absorbing material structure, the wave absorbing agent content of each suction ripple sandwich is identical or different；Preferably,
Each wave absorbing agent content for inhaling ripple sandwich is different, and the ripple sandwich of inhaling is according to wave absorbing agent content from low to high or from high to low suitable
Sequence is arranged, and the minimum suction ripple sandwich of wave absorbing agent content is disposed adjacent to electromagnetic wave incident side during use.Preferably, the suction ripple
At least one layer of material structure outermost layer is wave permeation layer, and the wave permeation layer is close to electromagnetic wave incident side during use；It is highly preferred that when each
It is different to inhale the wave absorbing agent content of ripple sandwich, and the order for inhaling ripple sandwich according to wave absorbing agent content from low to high or from high to low
When being arranged, at least there is a wave permeation layer on the outside of the minimum suction ripple sandwich of wave absorbing agent content.
Preferably, the wave permeation layer is prepared by electromagnetic wave transparent material；Preferably, the electromagnetic wave transparent material is selected from wave transparent paper base material
Material, wave transparent fabric, wave transparent fibre reinforced resin material etc., such as aramid paper, polyparaphenylene's Benzo-dioxazole (PBO) paper, glass
One or more in glass fiber cloth, quartz fiber cloth and glass fiber reinforced epoxy resin composite plate.
Preferably, the resin is thermosetting or thermoplastic polyester, such as phenolic resin, epoxy resin, propylene
Acid resin, polyimide resin etc..
In a specific embodiment, the absorbing material is formed by absorbing material constructed dip resin, solidification；
The absorbing material structure includes：
- foregoing suction ripple the sandwich inhaled ripple sandwich or preceding method and prepared, the suction ripple sandwich is according to wave absorbing agent content by as little as
High or order from high to low is arranged；
- the wave permeation layer being alternately arranged with the suction ripple sandwich, the wave permeation layer are prepared by electromagnetic wave transparent material, the wave transparent material
Material is selected from wave transparent paper base material, wave transparent fabric, wave transparent fibre reinforced resin material etc., such as aramid paper, polyparaphenylene's benzo
One or more in Er oxazoles (PBO) paper, glass fabric, quartz fiber cloth and glass fiber reinforced epoxy resin composite plate；
Wherein, at least one layer of the absorbing material structure outermost layer is wave permeation layer, it is preferable that the wave permeation layer is arranged on institute
State the outside of the minimum suction ripple sandwich of wave absorbing agent content in absorbing material structure；
The resin is thermosetting or thermoplastic polyester, as phenolic resin, epoxy resin, acrylic resin,
Polyimide resin etc..
The method that the present invention described in detail below prepares absorbing material.
The present invention is by will pass through after fiber-like wave absorbing agent and wave transparent fiber (that is, the fiber with wave transparent performance) mixing
The paper with absorbing property is made in paper technology, that is, inhales ripple paper, then is made up of above-mentioned suction ripple paper as lattice wall material and inhales ripple sandwich,
Then ripple sandwich will be inhaled as made from the different suction ripple paper of fiber-like wave absorbing agent content to be separated with wave permeation layer, finally will entirely tie
Structure carries out impregnation, solidification, that is, obtains absorbing material.
Specific preparation flow comprises the following steps：
(1) prepare and inhale ripple paper
(i) disperse 0.1~95wt% fiber-like wave absorbing agent and 5~99.9wt% wave transparent fiber in water, starched
Expect A；
(ii) Top wire former；
(iii) squeeze, dry；
(iv) press polish, obtain inhaling ripple paper A '；
(2) prepare and inhale ripple sandwich
(i) the different suction ripple paper A1 ' of fiber-like wave absorbing agent content, A2 ', A3 ' ... are respectively prepared inhale ripple sandwich A1 ",
A2”、A3”…；
(3) absorbing material is prepared
(i) ripple sandwich A1 ", A2 ", A3 " ... will be inhaled to be arranged according to the order of wave absorbing agent content from low to high, centre is used
Wave permeation layer B ' (being prepared by electromagnetic wave transparent material) is separated, and the outside of the minimum suction ripple sandwich of wave absorbing agent content also covers wave transparent
Layer (being prepared by electromagnetic wave transparent material)；
(ii) impregnating resin；
(iii) curing molding.
In ripple paper is inhaled in above-mentioned preparation, the fiber-like wave absorbing agent may be selected from having the magnetic of electromagnetic wave loss function fine
Dimension, conductive fiber, dielectric fibers and doping fiber type, as polycrystalline iron fiber, nickel fiber, carbon fiber, copper fiber, carborundum are fine
One or more in dimension, SiC/Ti doping fibers；The wave transparent fiber can be the good inorfil of wave, high-performance conjunction
Into fiber and its pulp, as p-aramid fiber fibrillation dissolving pulp, p-aramid fiber precipitating pulp, meta-aramid fibrillation dissolving pulp, PBO are former
One or more in fibrillation pulp, quartz fibre.The electromagnetic wave transparent material be selected from wave transparent paper base material, wave transparent fabric, thoroughly
Ripple fibre reinforced resin material etc., such as aramid paper, polyparaphenylene's Benzo-dioxazole (PBO) paper, glass fabric, quartz fiber cloth
With the one or more in glass fiber reinforced epoxy resin composite plate.
In ripple paper is inhaled in above-mentioned preparation, slurry passes through inclined wire, cylinder or long mesh paper making machine Top wire former；Or manually handsheet
Device shapes, and preferably slurry passes through titled net formation.
In ripple paper is inhaled in above-mentioned preparation, calendaring technology can specifically use roll-type calender in the bar of 50~300kg/cm line pressures
Under part or the press polish under 10~60MPa pressure conditions of flat-plate compressed ray machine is realized.
Wherein, it is as shown in Figure 1 to inhale ripple paper A ' preparation flows；It is as shown in Figure 2 to inhale ripple sandwich A " preparation flows.
In the method that ripple sandwich is inhaled in above-mentioned preparation, the sandwich can be chevron-shaped sandwich, rhombus sandwich, regular hexagon
One or more in cellular sandwich and other special-shaped cellular sandwich.
Absorbing material is prepared above-mentioned, is made respectively according to different wave absorbing agent contents after inhaling ripple paper A1 ', A2 ', A3 ' ...,
It is made according to flow shown in Fig. 2 and inhales ripple sandwich A1 ", A2 ", A3 " ..., wherein the content for inhaling wave absorbing agent in ripple paper is A1 '<A2’<
A3 ' ..., by taking the suction ripple sandwich of three kinds of different wave absorbing agent contents as an example, obtained absorbing material structure is as shown in Figure 3.
Absorbing material is prepared above-mentioned, the resin can be thermosetting or thermoplastic polyester, such as phenolic aldehyde
Resin, epoxy resin, acrylic resin, polyimide resin etc..
The mechanism of action of absorbing material of the present invention is：
For absorption-type absorbing material, want to reach and effectively absorb incident radar wave so that target-echo intensity significantly declines
The purpose subtracted need to solve two large problems：One is that incident wave energy enters material internal without being reflected by surface to greatest extent, i.e., full
Sufficient impedance matching condition；Two attenuate to be promptly absorbed by material into the electromagnetism wave energy of material internal, that is, meet decay bar
Part.Fiber-like wave absorbing agent not only has excellent electromagnetic attenuation effect, and has preferable mechanical property.Utilize paper technology
Fiber-like wave absorbing agent can be evenly dispersed in matrix material obtain inhale ripple paper, fiber-like wave absorbing agent in sandwich wall simultaneously
Contribute mechanical property and absorbing property.Inhaling ripple sandwich material compared to tradition, it is not required to additionally add wave absorbing agent, therefore greatly reduces
Inhale the gross mass of ripple sandwich material.When the present invention prepares suction ripple sandwich, wave absorbing agent is can be free of in resin matrix, therefore substantially change
The uniformity of resin dipping has been apt to it, so as to ensure that the uniformity of the mechanical property of final sandwich material and electromagnetic performance.The method
It can easily realize that the gradient of electromagnetic parameter controls, and is advantageous to when preparing absorbing material by changing the modes such as wave absorbing agent content
The optimization of impedance matching property, so as to reach the wave-absorbing effect of wideband.In addition wave absorbing agent and base in the absorbing material that prepared by the method
Body material is interweaved, it is not easy to absorbent peeling phenomenon occurs, so as to ensure the stability of its absorbing property.Meanwhile continue
The advantages of sandwiched absorbing material, that is, it is small to have good structural-load-carrying capacity, density concurrently, and incident electromagnetic wave can be carried out more
Secondary scattering is absorbed so as to radar wave energy of decaying to greatest extent.
Brief description of the drawings
Fig. 1 is the suction ripple paper A ' of present invention preparation flow；
Fig. 2 is the suction ripple sandwich A " of present invention preparation flow；
Fig. 3 is the absorbing material structure of the present invention；
Fig. 4 is the preparation flow of wave transparent paper C ' in comparative example；
Fig. 5 is the method that the resin containing wave absorbing agent is obtained in comparative example；
Fig. 6 is the preparation flow of the suction ripple sandwich E " in comparative example；
Fig. 7 is obtained absorbing material structure in comparative example.
Embodiment
With reference to embodiment, the present invention is described further.These embodiments are intended to help the content for illustrating invention
Rather than limitation the scope of the present invention.
In following examples, compressive strength and Modulus Test Method are referring to standard GB1453-2005 sandwiches or fuse
Flat crush resistance test method, shear strength and Modulus Test Method are sheared referring to standard GB1455-2005 sandwiches or fuse
Method for testing performance, absorbing property method of testing is referring to standard GJB2038-1994 radar absorbing reflectivity test methods
(arch method).
Embodiment 1
Carbon fiber 5wt% and p-aramid fiber fibrillation dissolving pulp 95wt% are mixed to prepare slurry A1, by carbon fiber 10wt%
Slurry A2 is mixed to prepare with p-aramid fiber fibrillation dissolving pulp 90wt%, by carbon fiber 15wt% and p-aramid fiber fibrillation dissolving pulp
85wt% is mixed to prepare slurry A3, and slurry A1, A2, A3 difference drainage shaping are made and inhale ripple paper A1 ', A2 ', A3 '.The fiber
Class wave absorbing agent is carbon fiber (domestic), and 10 μm of diameter, length 8mm, the wave transparent fiber is p-aramid fiber fibrillation dissolving pulp.
Preparation flow as shown in Figure 1, above-mentioned carbon fiber is dispersed in water with fluffer, with pulper by above-mentioned contraposition
Aramid fiber fibrillation dissolving pulp is dispersed in water, and respectively obtains two kinds of dispersed suspension, then two kinds of suspension are mixed, stirring
The slurry of concentration 0.03% is obtained after uniformly.Slurry A1, A2, A3 are made respectively according to aforementioned proportion with this kind of method.Make slurry
A1, A2, A3 distinguish Top wire former in slope screen former, dehydration, are dried at 105 DEG C.With roll-type calender in 200kg/cm
Line pressure press polish push Seterolithography, obtain inhaling ripple paper A1 ', A2 ', A3 ', be quantitatively 50g/m2。
According to the preparation flow shown in Fig. 2 with inhale ripple paper A1 ', A2 ', A3 ' impregnated phenolic resins be made inhale ripple sandwich A1 ",
A2 ", A3 ", spread 20%, the obtained cell length of side is 2.75mm, density 35.0kg/m3, highly be 10mm positive six side
Shape honeycomb core.Using thickness as 0.5mm p-aramid paper, as wave permeation layer B ', (preparation method of the wave permeation layer is as follows：A, in water
In disperse para-aramid fiber obtain slurry；B, approach flow is shaped；C, squeezing, drying；D, press polish；E, it is laminated；F, glue
Knot).Ripple sandwich A1 ", A2 ", A3 " and wave permeation layer B ' will be inhaled according to sequentially being arranged shown in Fig. 3, and described in impregnated phenolic resin obtains
Inhale ripple sandwich material.The resulting compressive strength for inhaling ripple sandwich material is 2.8MPa, and modulus of compressibility 1.96MPa, L are strong to shearing
Spend for 2.6MPa, L to modulus of shearing be 118.3MPa, W to shear strength 1.1MPa, L to modulus of shearing be 52.1MPa.Its
Reflectivity is satisfied by 2-18GHz frequency range and is less than -10dB, wherein meeting in 5.3-16.8GHz frequency range anti-
Penetrate rate and be less than -20dB, occur reflectivity minimum -42.6dB at 10.8GHz (under 2-18GHz frequency range).
Comparative example 1
Be made slurry C with wave transparent fiber, drainage shaping is made wave transparent paper C ', and by wave transparent paper be made with embodiment 1 just
Hexagonal honeycomb sandwich A " has the regular hexagon cellular sandwich C " of the identical cell length of side and height.The wave transparent fiber is contraposition
Aramid fiber fibrillation dissolving pulp.
Preparation flow as shown in Figure 4, above-mentioned p-aramid fiber fibrillation dissolving pulp is dispersed in water to obtain with pulper
Even scattered suspension, the slurry of concentration 0.03% is obtained after stirring.Slurry C is made with this kind of method.Make slurry C oblique
Top wire former is distinguished on net former, dehydration, is dried at 105 DEG C.With roll-type calender in 150 DEG C, 200kg/cm line pressure
Rolling condition pushes Seterolithography, obtains wave transparent paper C ', its quantification of 50g/m2。
According to shown in Fig. 5, by carbon fiber and phenolic resin in mass ratio 1：5 well mixed obtain the phenolic aldehyde tree of carbon fiber-containing
Fat D1, by carbon fiber and phenolic resin in mass ratio 2：5 it is well mixed obtain the phenolic resin D2 of carbon fiber-containing, by carbon fiber and
Phenolic resin in mass ratio 3：5 well mixed obtain the phenolic resin D3 of carbon fiber-containing.
Suction ripple sandwich is made in the phenolic resin D1 for impregnating carbon fiber-containing with wave transparent paper C ' according to the preparation flow shown in Fig. 6
E1 ", spread (carbon fiber-containing) are 23.1%, and its cell length of side is 2.75mm, density 36.4kg/m3, be highly 10mm.With
The phenolic resin D2 of wave transparent paper C ' dipping carbon fiber-containings, which is made, inhales ripple sandwich E2 ", and spread (carbon fiber-containing) is 25.9%, its hole
The lattice length of side is 2.75mm, density 37.8kg/m3, be highly 10mm.With the phenolic resin D3 of wave transparent paper C ' dipping carbon fiber-containings
It is made and inhales ripple sandwich E3 ", spread (carbon fiber-containing) is 28.6%, and its cell length of side is 2.75mm, density 39.2kg/m3、
Highly it is 10mm.P-aramid paper using thickness as 0.5mm is used as wave permeation layer.Ripple honeycomb core E1 ", E2 ", E3 " and wave transparent will be inhaled
Layer B ' shown in Fig. 7 according to sequentially arranging, and impregnated phenolic resin obtains the suction ripple sandwich material.Resulting suction ripple sandwich material
Compressive strength be 2.1MPa, modulus of compressibility 1.46MPa, L are 2.2MPa to shear strength, and L is to modulus of shearing
97.4MPa, W to shear strength 0.8MPa, L to modulus of shearing be 38.2MPa.It is full in 7.8-12.1GHz frequency range
Foot reflex rate is less than -10dB, does not occur the situation that reflectivity is less than -20dB in 2-18GHz frequency range, in 10.2GHz
There is reflectivity minimum -17.3dB in place (under 2-18GHz frequency range).As can be seen here, in carbon fiber and resin demand identical
In the case of, the absorbing material prepared according to the method for the present invention not only has less density and higher mechanical property, and
With more excellent absorbing property.
Embodiment 2
Silicon carbide fibre 40wt% and p-aramid fiber precipitating pulp 60wt% are mixed to prepare slurry A1, by silicon carbide fibre
50wt% and p-aramid fiber precipitating pulp 50wt% are mixed to prepare slurry A2, by silicon carbide fibre 60wt% and p-aramid fiber precipitating
Pulp 40wt% is mixed to prepare slurry A3, and slurry A1, A2, A3 difference drainage shaping are made and inhale ripple paper A1 ', A2 ', A3 '.It is described
Fiber-like wave absorbing agent is silicon carbide fibre (domestic), and 12 μm of diameter, length 6mm, the wave transparent fiber is p-aramid fiber precipitating slurry
The dregs of rice.
Preparation flow as shown in Figure 1, above-mentioned silicon carbide fibre is dispersed in water with fluffer, will be above-mentioned with pulper
P-aramid fiber precipitating pulp is dispersed in water, and respectively obtains two kinds of dispersed suspension, then two kinds of suspension are mixed, and is stirred
The slurry of concentration 0.05% is obtained after mixing uniformly.Slurry A1, A2, A3 are made respectively according to aforementioned proportion with this kind of method.Make slurry
Expect that A1, A2, A3 distinguish Top wire former in slope screen former, dehydration, dried at 110 DEG C.With roll-type calender in 220kg/
Cm line pressure rolling condition pushes Seterolithography, obtains inhaling ripple paper A1 ', A2 ', A3 ', is quantitatively 50g/m2。
It is made with ripple paper A1 ', A2 ', A3 ' dipping acrylic resins is inhaled according to the preparation flow shown in Fig. 2 and is inhaled ripple sandwich
A1 ", A2 ", A3 ", spread 25%, 60 ° of drift angle, density 37.4kg/m is made3, highly be 10mm corrugated plating clevis
Core.Using thickness as 0.7mm quartz textile, as wave permeation layer B ', (preparation method of the wave permeation layer is as follows：A, will be quartzy fine
Dimension precursor, which moves back, to be solved and twists with the fingers；B, warping, gait, quilling；C, weave；D, cut；E, in surface acrylic resins of painting；F, it is solid
Change).Ripple sandwich A1 ", A2 ", A3 " and wave permeation layer B ' will be inhaled according to sequentially being arranged shown in Fig. 3, and impregnate acrylic resin and obtain institute
State and inhale ripple sandwich material.The resulting suction cellular compressive strength of ripple sandwich material is 3.0MPa, modulus of compressibility 2.03MPa, L to
Shear strength is 2.8MPa, and L is 131.0MPa to modulus of shearing, and W is to modulus of shearing to shear strength 1.3MPa, L
57.2MPa.It is satisfied by reflectivity in 2-18GHz frequency range and is less than -10dB, wherein in 3.8-14.5GHz frequency
In the range of meet that reflectivity is less than -20dB, occur reflectivity minimum -33.7dB at 8.7GHz (under 2-18GHz frequency range).
Embodiment 3
Polycrystalline iron fiber 35wt%, carbon black 5wt% and PBO fibrillation dissolving pulp 60wt% are mixed to prepare slurry A1, will be more
Brilliant iron fiber 37.5, carbon black 6wt%wt% and PBO fibrillation dissolving pulp 56.5wt% is mixed to prepare slurry A2, by polycrystalline iron fiber
40wt%, carbon black 7wt% and PBO fibrillation dissolving pulp 53wt% are mixed to prepare slurry A3, by slurry A1, A2, A3 distinguish drainage into
Shape must inhale ripple paper A1 ', A2 ', A3 '.The fiber-like wave absorbing agent is polycrystalline iron fiber, 5 μm of diameter, length 1mm, described granular
Wave absorbing agent is carbon black, and 5~10 μm of particle diameter, the wave transparent fiber is PBO fibrillation dissolving pulps.
Preparation flow as shown in Figure 1, with fluffer by above-mentioned polycrystalline iron fiber and carbon black dispersion in water, use pulper
Above-mentioned PBO fibrillation dissolving pulps are dispersed in water, respectively obtain three kinds of dispersed suspension, then three kinds of suspension are mixed
Close, the slurry of concentration 0.08% is obtained after stirring.Slurry A1, A2, A3 are made respectively according to aforementioned proportion with this kind of method.
Slurry A1, A2, A3 is distinguished Top wire former in slope screen former, dehydration, dried at 110 DEG C.Existed with flat-plate compressed ray machine
Press polish is molded under the conditions of 20MPa calendering pressure, is obtained inhaling ripple paper A1 ', A2 ', A3 ', is quantitatively 50g/m2。
According to the preparation flow shown in Fig. 2 with inhale ripple paper A1 ', A2 ', A3 ' epoxy resin-impregnateds be made inhale ripple sandwich A1 ",
A2 ", A3 ", spread 18%, the obtained length of side is 2mm, density 31.3kg/m3, highly be 10mm rhombus sandwich.With thickness
(preparation method of the wave permeation layer is as follows as wave permeation layer B ' for the chopped glass fiber reinforced epoxy composite for spending for 0.3mm：a、
Curing agent and solvent are added in the epoxy, are uniformly mixing to obtain blend glue stuff；B, chopped glass fiber is added in blend glue stuff,
Stir；C, mixed liquor is poured into mould；D, decompression deaerates to bubble-free；E, solidify).To inhale ripple honeycomb core A1 ", A2 ",
A3 " and wave permeation layer B ' shown in Fig. 3 according to sequentially arranging, and epoxy resin-impregnated obtains the suction ripple sandwich material.Resulting suction
The compressive strength of ripple sandwich material is 3.3MPa, and modulus of compressibility 2.17MPa, L are 2.7MPa to shear strength, and L is to shearing mould
Measure as 129.4MPa, W to shear strength 1.2MPa, L to modulus of shearing be 55.8MPa.It is equal in 2-18GHz frequency range
Meet that reflectivity is less than -10dB, wherein meeting that reflectivity is less than -20dB in 2.5-15.9GHz frequency range, in 9.3GHz
There is reflectivity minimum -44.3dB in place (under 2-18GHz frequency range).
Embodiment 4
Nickel fiber 0.5wt%, ferrite 2wt% and quartz fibre 93.5wt% are mixed to prepare slurry A1, by nickel fiber
5wt%, ferrite 4wt% and quartz fibre 91wt% are mixed to prepare slurry A2, by nickel fiber 42wt%, ferrite 8wt% and
Quartz fibre 50wt% is mixed to prepare slurry A3, and slurry A1, A2, A3 difference drainage shaping are made and inhale ripple paper A1 ', A2 ', A3 '.
The fiber-like wave absorbing agent is nickel fiber, 8 μm of diameter, length 4mm, and the irregular shape wave absorbing agent is six square ferrites, institute
It is quartz fibre to state wave transparent fiber.
Preparation flow as shown in Figure 1, above-mentioned nickel fiber, ferrite and quartz fibre are dispersed in water respectively with fluffer
In, three kinds of dispersed suspension are respectively obtained, then three kinds of suspension are mixed, concentration 0.1% is obtained after stirring
Slurry.Slurry A1, A2, A3 are made respectively according to aforementioned proportion with this kind of method.Make slurry A1, A2, A3 in slope screen former
Top wire former respectively, dehydration, is dried at 108 DEG C.Seterolithography is pushed with rolling condition of the flat-plate compressed ray machine in 30MPa, is obtained
Ripple paper A1 ', A2 ', A3 ' are inhaled, is quantitatively 50g/m2。
It is made with ripple paper A1 ', A2 ', A3 ' dipping polyimide resins is inhaled according to the preparation flow shown in Fig. 2 and is inhaled ripple sandwich
A1 ", A2 ", A3 ", spread 30%, the obtained cell length of side is 1.83mm, density 60.1kg/m3, highly for 10mm just
Hexagonal honeycomb core.Using thickness as 0.3mm meta-position aramid fiber paper, as wave permeation layer B ', (preparation method of the wave permeation layer is as follows：a、
Disperse meta-aramid fibers in water and obtain slurry；B, approach flow is shaped；C, squeezing, drying；D, press polish；E, it is laminated；f、
Bond).Ripple sandwich A1 ", A2 ", A3 " and wave permeation layer B ' will be inhaled according to sequentially being arranged shown in Fig. 4, and impregnate polyimide resin and obtain
To the suction ripple sandwich material.The resulting compressive strength for inhaling ripple sandwich material is 2.5MPa, modulus of compressibility 1.74MPa, L to
Shear strength is 2.1MPa, and L is 101.2MPa to modulus of shearing, and W is to modulus of shearing to shear strength 0.9MPa, L
41.7MPa.It is satisfied by reflectivity in 2-18GHz frequency range and is less than -10dB, wherein in 3.2-15.7GHz frequency
In the range of meet that reflectivity is less than -20dB, occur reflectivity minimum -39.4dB at 7.1GH (under 2-18GHz frequency range).
Claims (4)
1. a kind of absorbing material, the absorbing material is formed by absorbing material constructed dip resin, solidification；
The absorbing material structure includes：
- three layers of suction ripple sandwich, the suction ripple paper that this three layers suction ripple sandwich are made include following component respectively：Polycrystalline iron fiber
35wt%, carbon black 5wt% and PBO fibrillation dissolving pulp 60wt%；Polycrystalline iron fiber 37.5wt%, carbon black 6wt% and PBO fibrillation
Pulp 56.5wt%；Polycrystalline iron fiber 40wt%, carbon black 7wt% and PBO fibrillation dissolving pulp 53wt%, the suction ripple sandwich is according to suction
The order of ripple agent content from low to high or from high to low is arranged；
- the wave permeation layer being alternately arranged with the suction ripple sandwich, the wave permeation layer are prepared by electromagnetic wave transparent material, the electromagnetic wave transparent material choosing
From wave transparent paper base material, wave transparent fabric and wave transparent fibre reinforced resin material；
Wherein, at least one layer of the absorbing material structure outermost layer is wave permeation layer；
The resin is thermosetting or thermoplastic polyester.
2. absorbing material according to claim 1, it is characterised in that the wave permeation layer is arranged on the absorbing material structure
The outside of the minimum suction ripple sandwich of middle wave absorbing agent content.
3. absorbing material according to claim 1 or 2, it is characterised in that the resin be phenolic resin, epoxy resin,
Acrylic resin or polyimide resin.
4. absorbing material according to claim 1 or 2, it is characterised in that the electromagnetic wave transparent material is selected from aramid paper, is poly- to benzene
Support the one or more in Benzo-dioxazole paper, glass fabric, quartz fiber cloth and glass fiber reinforced epoxy resin composite plate.
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| CN115891293A (en) * | 2022-12-15 | 2023-04-04 | 航天特种材料及工艺技术研究所 | Wave-absorbing honeycomb with impedance matching structure and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451989A (en) * | 2013-09-18 | 2013-12-18 | 烟台民士达特种纸业股份有限公司 | Electrothermal high-temperature-resistant carbon fiber paper and preparation method thereof |
| CN103587706A (en) * | 2013-11-14 | 2014-02-19 | 北京机电工程研究所 | Aircraft oil tank component with low radar echo scattering function and preparation method thereof |
| CN103726394A (en) * | 2013-04-22 | 2014-04-16 | 太仓派欧技术咨询服务有限公司 | High-strength carbon fiber shielding paper and preparation method thereof |
| CN103737988A (en) * | 2014-01-06 | 2014-04-23 | 苏州芳磊蜂窝复合材料有限公司 | Honeycomb core based on carbon fibre paper and preparation method for same |
-
2014
- 2014-09-10 CN CN201410459537.4A patent/CN104404814B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726394A (en) * | 2013-04-22 | 2014-04-16 | 太仓派欧技术咨询服务有限公司 | High-strength carbon fiber shielding paper and preparation method thereof |
| CN103451989A (en) * | 2013-09-18 | 2013-12-18 | 烟台民士达特种纸业股份有限公司 | Electrothermal high-temperature-resistant carbon fiber paper and preparation method thereof |
| CN103587706A (en) * | 2013-11-14 | 2014-02-19 | 北京机电工程研究所 | Aircraft oil tank component with low radar echo scattering function and preparation method thereof |
| CN103737988A (en) * | 2014-01-06 | 2014-04-23 | 苏州芳磊蜂窝复合材料有限公司 | Honeycomb core based on carbon fibre paper and preparation method for same |
Non-Patent Citations (1)
| Title |
|---|
| "胶原纤维-植物纤维复合屏蔽纸的制备及其微波屏蔽性能研究";刘一山等;《中国造纸》;20110831;第30卷(第8期);第18-21页 * |
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