CN107415336A - A kind of multilayer high temperature resistant absorbent structure based on honeycomb - Google Patents

A kind of multilayer high temperature resistant absorbent structure based on honeycomb Download PDF

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Publication number
CN107415336A
CN107415336A CN201710633648.6A CN201710633648A CN107415336A CN 107415336 A CN107415336 A CN 107415336A CN 201710633648 A CN201710633648 A CN 201710633648A CN 107415336 A CN107415336 A CN 107415336A
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layer
composite
isocyanates
core shell
ripple
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韦德永
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/06—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/06—Coating on the layer surface on metal layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness

Abstract

The application is related to a kind of multilayer high temperature resistant absorbent structure based on honeycomb, the absorbent structure includes silicone rubber material and inhales ripple layer, aluminum alloy honeycomb structure layer and isocyanates composite layer, the aluminum alloy honeycomb structure layer is embedded in the silicone rubber material by isocyanate adhesive bonding and inhaled between ripple layer and isocyanates composite layer, the aluminum alloy honeycomb structure layer surface is sequentially provided with the first suction ripple layer, the second suction ripple layer, wherein, the first suction ripple layer is core shell structure carbonyl iron dust/Fe by 7% mass ratio3O4Composite and the configuration of the isocyanates of surplus form, and the second suction ripple layer is the core shell structure TiO by 22% mass ratio2Nano particle/Fe3O4Composite and the configuration of the isocyanates of surplus form.

Description

A kind of multilayer high temperature resistant absorbent structure based on honeycomb
Technical field
The application is related to absorbent structure technical field, more particularly to a kind of multilayer high temperature resistant based on honeycomb inhales ripple knot Structure.
Background technology
With the rapid development of microwave and mechanics of communication, particularly mobile communication, computer, household electrical appliance it is increasingly general And threat of the increasingly severe electromagnetic pollution to environment and bio-safety is increasingly taken seriously, electromagnetic radiation to household electrical appliance, The strong jammings such as Medical Devices, aviation even can cause catastrophic effect.
In wireless communication field, in order to increase data transmission bauds, the transmission frequency of signal is from former hundreds of megahertzs 1-3GHz of today is brought up to, frequency greatly improves, and electromagnetic pollution is more serious, in addition, on airport, flight is because of Electromagnetic Interference The situation that can not be taken off and be delayed gradually increases, and in hospital, mobile phone can disturb the normal work of various electronic instrument for diagnosing and curing diseases devices； Above-mentioned electromagnetic pollution can effectively be suppressed by reasonable employment absorbing material and its component.
Preferable absorbing material has that thickness of thin, density are low, inhale wave frequency bandwidth and advantage, metal and the magnetic such as performance can design Property traditional absorbing material such as material, although with good microwave absorbing property, its density is big, poor corrosion resistance etc. Shortcoming limits its application.
The content of the invention
The present invention is intended to provide a kind of multilayer high temperature resistant absorbent structure based on honeycomb, to solve set forth above ask Topic.
A kind of multilayer high temperature resistant absorbent structure based on honeycomb, the absorbent structure are provided in embodiments of the invention Ripple layer, aluminum alloy honeycomb structure layer and isocyanates composite layer, the aluminum alloy honeycomb structure are inhaled including silicone rubber material Layer is embedded in the silicone rubber material by isocyanate adhesive bonding and inhaled between ripple layer and isocyanates composite layer, institute State aluminum alloy honeycomb structure layer surface and be sequentially provided with the first suction ripple layer, the second suction ripple layer, wherein, the first suction ripple layer is by 7% Core shell structure carbonyl iron dust/Fe of mass ratio3O4Composite and the configuration of the isocyanates of surplus form, the second suction ripple layer It is the core shell structure TiO by 22% mass ratio2Nano particle/Fe3O4Composite and the configuration of the isocyanates of surplus form.
The technical scheme that embodiments of the invention provide can include the following benefits：
The multilayer high temperature resistant absorbent structure of the present invention includes silicone rubber material and inhales ripple layer, aluminum alloy honeycomb structure layer and isocyanide Acid esters composite layer, high temperature resistant, inhale that ripple, preferable pliability, impact resistance, density is small, light weight；The absorbent structure application Extensively, multiple fields, such as household electrical appliances, electronic equipment etc. be can be applied to；The absorbent structure is by metal material, elastomeric material and composite wood Material is formed, and has larger strength and stability；The aluminum alloy honeycomb structure layer is provided with first and inhales ripple layer, the second suction ripple layer, inhales Ripple layer includes core shell structure carbonyl iron dust/Fe3O4Composite, core shell structure TiO2Nano particle/Fe3O4Composite, point Not by Fe3O4With carbonyl iron dust, TiO2Nano-particles reinforcement so that the absorbing property of composite is improved.
The aspect and advantage that the application adds will be set forth in part in the description, and will partly become from the following description Obtain substantially, or recognized by the practice of the application.It should be appreciated that the general description and following detailed description of the above are only It is exemplary and explanatory, the application can not be limited.
Brief description of the drawings
Using accompanying drawing, the invention will be further described, but the embodiment in accompanying drawing does not form any limit to the present invention System, for one of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to the following drawings Other accompanying drawings.
Fig. 1 is the structural representation of multilayer high temperature resistant absorbent structure of the present invention；
Fig. 2 is the structural representation of aluminum alloy honeycomb structure layer of the present invention；
Wherein, 21- silicone rubber materials suction ripple layer, 22- aluminum alloy honeycomb structure layers, 23- isocyanates composite layers, 24- first inhales ripple layer, and 25- second inhales ripple layer.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended The example of the consistent apparatus and method of some aspects being described in detail in claims, of the invention.
The technical scheme of the application is related to a kind of multilayer high temperature resistant absorbent structure based on honeycomb, as shown in figure 1, should Absorbent structure includes silicone rubber material and inhales ripple layer 21, aluminum alloy honeycomb structure layer 22 and isocyanates composite layer 23, wherein, The aluminum alloy honeycomb structure layer is embedded in the silicone rubber material by isocyanate adhesive bonding and inhales ripple layer and isocyanic acid Between ester composite layer, the aluminum alloy honeycomb structure layer surface is sequentially provided with the first suction ripple layer 24, second and inhales ripple layer 25, tool Body is as shown in Figure 2.
Absorbing material can utilize a variety of loss mechanisms that the electromagnetic wave of incidence is converted into heat energy or other energy Form and reach and inhale ripple purpose, absorbing material has structural type and an application type, and application type is mainly compound by binding agent, adsorbent etc. Form.In the prior art, the single structural type of generally use or coating-type absorbing materials, ripple purpose is inhaled to reach, however, root It is theoretical according to ripple is inhaled, using Multilayer Microwave Absorption Materials, the different frequency range of electromagnetic wave can effectively be absorbed, extend the frequency for inhaling ripple Width, the technical scheme that structural type and coating-type absorbing materials are combined is few, in the technical scheme of the application, by using silicon rubber Glue material matter inhales ripple layer, aluminum alloy honeycomb structure layer and isocyanates composite layer and constructs a kind of multilayer absorbent structure, then In multilayer absorbent structure, the aluminum alloy honeycomb structure layer is provided with first and inhales ripple layer, the second suction ripple layer, and this is for the anti-of electromagnetic wave Penetrate loss and absorption loss all greatly enhances, so as to reach wave-absorbing effect as much as possible.
Preferably, the preparation formula of above-mentioned silicone rubber material suction ripple layer 21 includes ceramic-like wave absorbing agent, carborundum and boron Alumina silicate；The thickness that the silicone rubber material inhales ripple layer 21 is 0.5mm.
The silicone rubber material, which inhales ripple layer, has the advantages that pliability is good, impact resistance is strong, heat-resisting quantity is good.
Preferably, the preparation formula of above-mentioned isocyanates composite layer 23 includes isocyanates, glass steel fibre, nanometer Aluminum oxide and nano zine oxide；The thickness of the isocyanates composite layer 23 is 0.7mm.
The above-mentioned surface of aluminum alloy honeycomb structure layer 22 is sequentially provided with the first suction ripple layer 24, second and inhales ripple layer 25, and the aluminium closes The thickness of golden honeycomb layer 22 is 2mm.
In technical scheme, the first suction ripple layer 24 is core shell structure carbonyl iron dust/Fe by 7% mass ratio3O4 Composite and the configuration of the isocyanates of surplus form, and the thickness of the first suction ripple layer 24 is 0.1~0.3mm.
Ferrite is a kind of absorbing material that cost is minimum, most widely used, its advantage be raw material sources it is cheap extensively, Manufacture craft is simple, resistance is higher, wherein Fe3O4It is simplest representative in ferrite, it is double losses, to the damage of electromagnetic wave Consumption includes magnetic loss, ion and electron resonance loss, polarization loss etc., but traditional single Fe3O4As absorbing material, it is difficult to Meet thin absorbing material thickness bottom, bandwidth, absorb strong composite request, in the application, by carbonyl iron dust and Fe3O4It is compound, pass through One layer of Fe is covered on carbonyl iron dust surface3O4As magnetic oxide, on the one hand, the resistance of composite can increase, impedance matching Performance is improved, and can effectively suppress the generation of Kelvin effect and eddy current effect, on the other hand, the saturated magnetization of composite Intensity decreases will not be very big, and magnetic loss will not reduce much in GHz range, so that the absorbing property of composite obtains Improve.
In technical scheme, the second suction ripple layer 25 is the core shell structure TiO by 22% mass ratio2Nanometer Grain/Fe3O4Composite and the configuration of the isocyanates of surplus form, and the thickness of the second suction ripple layer 25 is 0.2~0.5mm.
Titanium dioxide is a kind of stable semi-conducting material of chemical property, normally behaves as photocatalysis performance, is urged for light Change self-cleaning material, or in the products such as papermaking, rubber, being used as filler, colouring agent, and in the application, pass through In TiO2Nano grain surface covers one layer of Fe3O4As magnetic oxide, by TiO2Nano particle and Fe3O4It is compound, improve Traditional single Fe3O4The defects of as absorbing material so that inhale wave frequency bandwidth and increased.
The technical scheme of the application further relates to the preparation process of above-mentioned multilayer high temperature resistant absorbent structure：
Step 1, prepare silicone rubber material and inhale ripple layer
Rubber is used as substrate, addition ceramic-like wave absorbing agent, carborundum and boron sikicate aluminum prepare silicone rubber material and inhale ripple layer, Thickness is 0.5mm；
Step 2, isocyanates composite layer is prepared
Isocyanates is used as substrate, addition glass steel fibre, nano aluminium oxide and nano zine oxide prepare isocyanates and answered Condensation material layer, thickness 0.7mm；
Step 3, aluminum alloy honeycomb structure layer is prepared
A) core shell structure carbonyl iron dust/Fe is prepared3O4Composite
The granularity of carbonyl iron dust is 1~2 μm, and purity is pure for chemistry, takes 40g carbonyl iron dusts, 50ml distilled water to be added to In 250ml stainless steel cauldrons, it is 13 to add appropriate solid NaOH and control the pH value of solution, in the case of sealing, 400rpm is stirred, and 180 DEG C of reaction 4h, is then naturally cooled to room temperature, is washed respectively 3 times with water and ethanol, collected and obtained with magnet Final product is obtained, 60 DEG C of dry 8h, obtains core shell structure carbonyl iron dust/Fe3O4Composite；
B) core shell structure TiO is prepared2Nano particle/Fe3O4Composite
Take 9.5g TiO2Nano particle, 0.7g NaOH, 12ml Fe (CO)5, 180ml monoethanolamine, 10ml 85% Hydrazine hydrate be added in 250ml stainless steel cauldrons, in 160 DEG C be incubated 8h, naturally cool to room temperature, obtain black precipitate Thing, washed 3 times with distilled water and absolute ethyl alcohol respectively, collected with magnet and obtain final product, 80 DEG C of dry 8h, obtain nucleocapsid knot Structure TiO2Nano particle/Fe3O4Composite；
C) first, by above-mentioned core shell structure carbonyl iron dust/Fe3O4Composite and isocyanates are configured to coating, coating On aluminum alloy honeycomb structure surface, form first and inhale ripple layer, then, by above-mentioned core shell structure TiO2Nano particle/Fe3O4It is multiple Condensation material and isocyanates are configured to coating, again coated in aluminum alloy honeycomb structure surface, form second and inhale ripple layer, obtain aluminium Alloy cellular structure sheaf；Wherein, first inhales in ripple layer, core shell structure carbonyl iron dust/Fe3O4Composite content is 7% mass ratio Example, the first suction ripple thickness degree is 0.1~0.3mm, and second inhales in ripple layer, core shell structure TiO2Nano particle/Fe3O4Composite Content is 22% mass ratio, and the second suction ripple thickness degree is 0.2~0.5mm；
Step 4, assemble
Silicone rubber material obtained above is inhaled into ripple layer, aluminum alloy honeycomb structure layer and isocyanic acid with isocyanate adhesive The bonding of ester composite layer is inlayed together, forms multilayer high temperature resistant absorbent structure described herein.
Embodiment 1
Step 1, prepare silicone rubber material and inhale ripple layer
Rubber is used as substrate, addition ceramic-like wave absorbing agent, carborundum and boron sikicate aluminum prepare silicone rubber material and inhale ripple layer, Thickness is 0.5mm；
Step 2, isocyanates composite layer is prepared
Isocyanates is used as substrate, addition glass steel fibre, nano aluminium oxide and nano zine oxide prepare isocyanates and answered Condensation material layer, thickness 0.7mm；
Step 3, aluminum alloy honeycomb structure layer is prepared
A) core shell structure carbonyl iron dust/Fe is prepared3O4Composite
The granularity of carbonyl iron dust is 1~2 μm, and purity is pure for chemistry, takes 40g carbonyl iron dusts, 50ml distilled water to be added to In 250ml stainless steel cauldrons, it is 13 to add appropriate solid NaOH and control the pH value of solution, in the case of sealing, 400rpm is stirred, and 180 DEG C of reaction 4h, is then naturally cooled to room temperature, is washed respectively 3 times with water and ethanol, collected and obtained with magnet Final product is obtained, 60 DEG C of dry 8h, obtains core shell structure carbonyl iron dust/Fe3O4Composite；
B) core shell structure TiO is prepared2Nano particle/Fe3O4Composite
Take 9.5g TiO2Nano particle, 0.7g NaOH, 12ml Fe (CO)5, 180ml monoethanolamine, 10ml 85% Hydrazine hydrate be added in 250ml stainless steel cauldrons, in 160 DEG C be incubated 8h, naturally cool to room temperature, obtain black precipitate Thing, washed 3 times with distilled water and absolute ethyl alcohol respectively, collected with magnet and obtain final product, 80 DEG C of dry 8h, obtain nucleocapsid knot Structure TiO2Nano particle/Fe3O4Composite；
C) first, by above-mentioned core shell structure carbonyl iron dust/Fe3O4Composite and isocyanates are configured to coating, coating On aluminum alloy honeycomb structure surface, form first and inhale ripple layer, then, by above-mentioned core shell structure TiO2Nano particle/Fe3O4It is multiple Condensation material and isocyanates are configured to coating, again coated in aluminum alloy honeycomb structure surface, form second and inhale ripple layer, obtain aluminium Alloy cellular structure sheaf；Wherein, first inhales in ripple layer, core shell structure carbonyl iron dust/Fe3O4Composite content is 7% mass ratio Example, the first suction ripple thickness degree is 0.1mm, and second inhales in ripple layer, core shell structure TiO2Nano particle/Fe3O4Composite content is 22% mass ratio, the second suction ripple thickness degree is 0.2mm；
Step 4, assemble
Silicone rubber material obtained above is inhaled into ripple layer, aluminum alloy honeycomb structure layer and isocyanic acid with isocyanate adhesive The bonding of ester composite layer is inlayed together, forms multilayer high temperature resistant absorbent structure described herein.
Test obtains, and the multilayer high temperature resistant absorbent structure electromagnetic wave absorption ability of the application is strong, and maximum reflection loss exists It is -35.8dB, frequency bandwidth of the reflection loss better than 10dB is 12.9GHz at 13.7GHz.
Embodiment 2
Step 1, prepare silicone rubber material and inhale ripple layer
Rubber is used as substrate, addition ceramic-like wave absorbing agent, carborundum and boron sikicate aluminum prepare silicone rubber material and inhale ripple layer, Thickness is 0.5mm；
Step 2, isocyanates composite layer is prepared
Isocyanates is used as substrate, addition glass steel fibre, nano aluminium oxide and nano zine oxide prepare isocyanates and answered Condensation material layer, thickness 0.7mm；
Step 3, aluminum alloy honeycomb structure layer is prepared
A) core shell structure carbonyl iron dust/Fe is prepared3O4Composite
The granularity of carbonyl iron dust is 1~2 μm, and purity is pure for chemistry, takes 40g carbonyl iron dusts, 50ml distilled water to be added to In 250ml stainless steel cauldrons, it is 13 to add appropriate solid NaOH and control the pH value of solution, in the case of sealing, 400rpm is stirred, and 180 DEG C of reaction 4h, is then naturally cooled to room temperature, is washed respectively 3 times with water and ethanol, collected and obtained with magnet Final product is obtained, 60 DEG C of dry 8h, obtains core shell structure carbonyl iron dust/Fe3O4Composite；
B) core shell structure TiO is prepared2Nano particle/Fe3O4Composite
Take 9.5g TiO2Nano particle, 0.7g NaOH, 12ml Fe (CO)5, 180ml monoethanolamine, 10ml 85% Hydrazine hydrate be added in 250ml stainless steel cauldrons, in 160 DEG C be incubated 8h, naturally cool to room temperature, obtain black precipitate Thing, washed 3 times with distilled water and absolute ethyl alcohol respectively, collected with magnet and obtain final product, 80 DEG C of dry 8h, obtain nucleocapsid knot Structure TiO2Nano particle/Fe3O4Composite；
C) first, by above-mentioned core shell structure carbonyl iron dust/Fe3O4Composite and isocyanates are configured to coating, coating On aluminum alloy honeycomb structure surface, form first and inhale ripple layer, then, by above-mentioned core shell structure TiO2Nano particle/Fe3O4It is multiple Condensation material and isocyanates are configured to coating, again coated in aluminum alloy honeycomb structure surface, form second and inhale ripple layer, obtain aluminium Alloy cellular structure sheaf；Wherein, first inhales in ripple layer, core shell structure carbonyl iron dust/Fe3O4Composite content is 7% mass ratio Example, the first suction ripple thickness degree is 0.2mm, and second inhales in ripple layer, core shell structure TiO2Nano particle/Fe3O4Composite content is 22% mass ratio, the second suction ripple thickness degree is 0.3mm；
Step 4, assemble
Silicone rubber material obtained above is inhaled into ripple layer, aluminum alloy honeycomb structure layer and isocyanic acid with isocyanate adhesive The bonding of ester composite layer is inlayed together, forms multilayer high temperature resistant absorbent structure described herein.
Test obtains, and the multilayer high temperature resistant absorbent structure electromagnetic wave absorption ability of the application is strong, and maximum reflection loss exists It is -34.3dB, frequency bandwidth of the reflection loss better than 10dB is 12.6GHz at 14.1GHz.
Embodiment 3
Step 1, prepare silicone rubber material and inhale ripple layer
Rubber is used as substrate, addition ceramic-like wave absorbing agent, carborundum and boron sikicate aluminum prepare silicone rubber material and inhale ripple layer, Thickness is 0.5mm；
Step 2, isocyanates composite layer is prepared
Isocyanates is used as substrate, addition glass steel fibre, nano aluminium oxide and nano zine oxide prepare isocyanates and answered Condensation material layer, thickness 0.7mm；
Step 3, aluminum alloy honeycomb structure layer is prepared
A) core shell structure carbonyl iron dust/Fe is prepared3O4Composite
The granularity of carbonyl iron dust is 1~2 μm, and purity is pure for chemistry, takes 40g carbonyl iron dusts, 50ml distilled water to be added to In 250ml stainless steel cauldrons, it is 13 to add appropriate solid NaOH and control the pH value of solution, in the case of sealing, 400rpm is stirred, and 180 DEG C of reaction 4h, is then naturally cooled to room temperature, is washed respectively 3 times with water and ethanol, collected and obtained with magnet Final product is obtained, 60 DEG C of dry 8h, obtains core shell structure carbonyl iron dust/Fe3O4Composite；
B) core shell structure TiO is prepared2Nano particle/Fe3O4Composite
Take 9.5g TiO2Nano particle, 0.7g NaOH, 12ml Fe (CO)5, 180ml monoethanolamine, 10ml 85% Hydrazine hydrate be added in 250ml stainless steel cauldrons, in 160 DEG C be incubated 8h, naturally cool to room temperature, obtain black precipitate Thing, washed 3 times with distilled water and absolute ethyl alcohol respectively, collected with magnet and obtain final product, 80 DEG C of dry 8h, obtain nucleocapsid knot Structure TiO2Nano particle/Fe3O4Composite；
C) first, by above-mentioned core shell structure carbonyl iron dust/Fe3O4Composite and isocyanates are configured to coating, coating On aluminum alloy honeycomb structure surface, form first and inhale ripple layer, then, by above-mentioned core shell structure TiO2Nano particle/Fe3O4It is multiple Condensation material and isocyanates are configured to coating, again coated in aluminum alloy honeycomb structure surface, form second and inhale ripple layer, obtain aluminium Alloy cellular structure sheaf；Wherein, first inhales in ripple layer, core shell structure carbonyl iron dust/Fe3O4Composite content is 7% mass ratio Example, the first suction ripple thickness degree is 0.3mm, and second inhales in ripple layer, core shell structure TiO2Nano particle/Fe3O4Composite content is 22% mass ratio, the second suction ripple thickness degree is 0.5mm；
Step 4, assemble
Silicone rubber material obtained above is inhaled into ripple layer, aluminum alloy honeycomb structure layer and isocyanic acid with isocyanate adhesive The bonding of ester composite layer is inlayed together, forms multilayer high temperature resistant absorbent structure described herein.
Test obtains, and the multilayer high temperature resistant absorbent structure electromagnetic wave absorption ability of the application is strong, and maximum reflection loss exists It is -32.5dB, frequency bandwidth of the reflection loss better than 10dB is 13.7GHz at 16.5GHz.
The preferred mode of the present invention is the foregoing is only, is not intended to limit the invention, it is all in the spiritual and former of the present invention Within then, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.

Claims (7)

1. a kind of multilayer high temperature resistant absorbent structure based on honeycomb, it is characterised in that the absorbent structure includes silicon rubber material Matter inhales ripple layer, aluminum alloy honeycomb structure layer and isocyanates composite layer, the aluminum alloy honeycomb structure layer and passes through isocyanic acid Ester adhesive bond is embedded in the silicone rubber material and inhaled between ripple layer and isocyanates composite layer, the aluminum alloy honeycomb Structure layer surface is sequentially provided with the first suction ripple layer, the second suction ripple layer, wherein, the first suction ripple layer is by core shell structure carbonyl iron Powder/Fe3O4Composite and isocyanates configuration form, and the second suction ripple layer is by core shell structure TiO2Nano particle/Fe3O4It is multiple Condensation material and isocyanates configuration form.
2. a kind of multilayer high temperature resistant absorbent structure based on honeycomb according to claim 1, it is characterised in that described The preparation formula that silicone rubber material inhales ripple layer includes ceramic-like wave absorbing agent, carborundum and boron sikicate aluminum.
3. a kind of multilayer high temperature resistant absorbent structure based on honeycomb according to claim 2, it is characterised in that described The thickness that silicone rubber material inhales ripple layer is 0.5mm.
4. a kind of multilayer high temperature resistant absorbent structure based on honeycomb according to claim 1, it is characterised in that described The preparation formula of isocyanates composite layer includes isocyanates, glass steel fibre, nano aluminium oxide and nano zine oxide.
5. a kind of multilayer high temperature resistant absorbent structure based on honeycomb according to claim 4, it is characterised in that described The thickness of isocyanates composite layer is 0.7mm.
A kind of 6. multilayer high temperature resistant absorbent structure based on honeycomb according to claim 1, it is characterised in that the aluminium The thickness of alloy cellular structure sheaf is 2mm, and the first suction ripple thickness degree is 0.1~0.3mm, and first inhales in ripple layer, the nucleocapsid knot Structure carbonyl iron dust/Fe3O4The mass percent of composite is 7%；The second suction ripple thickness degree is 0.2~0.5mm, and second inhales In ripple layer, core shell structure TiO2Nano particle/Fe3O4The mass percent of composite is 22%.
7. a kind of multilayer high temperature resistant absorbent structure based on honeycomb according to claim 1, it is characterised in that above-mentioned The preparation process of multilayer high temperature resistant absorbent structure is：
Step 1, prepare silicone rubber material and inhale ripple layer
Rubber is used as substrate, addition ceramic-like wave absorbing agent, carborundum and boron sikicate aluminum prepare silicone rubber material and inhale ripple layer, thickness For 0.5mm；
Step 2, isocyanates composite layer is prepared
Isocyanates is used as substrate, addition glass steel fibre, nano aluminium oxide and nano zine oxide prepare isocyanates composite wood The bed of material, thickness 0.7mm；
Step 3, aluminum alloy honeycomb structure layer is prepared
A) core shell structure carbonyl iron dust/Fe is prepared3O4Composite
The granularity of carbonyl iron dust is 1~2 μm, and purity is pure for chemistry, takes 40g carbonyl iron dusts, 50ml distilled water to be added to 250ml not Become rusty in steel reactor, it is 13 to add appropriate solid NaOH and control the pH value of solution, in the case of sealing, 400rpm stirrings, 180 DEG C of reaction 4h, then naturally cool to room temperature, are washed respectively 3 times with water and ethanol, collected with magnet and obtain final product, 60 DEG C of dry 8h, obtain core shell structure carbonyl iron dust/Fe3O4Composite；
B) core shell structure TiO is prepared2Nano particle/Fe3O4Composite
Take 9.5g TiO2Nano particle, 0.7g NaOH, 12ml Fe (CO)5, 180ml monoethanolamine, 10ml 85% water Close hydrazine to be added in 250ml stainless steel cauldrons, be incubated 8h in 160 DEG C, naturally cool to room temperature, obtain black precipitate, point Do not washed 3 times with distilled water and absolute ethyl alcohol, collected with magnet and obtain final product, 80 DEG C of dry 8h, obtain core shell structure TiO2Nano particle/Fe3O4Composite；
C) first, by above-mentioned core shell structure carbonyl iron dust/Fe3O4Composite and isocyanates are configured to coating, coated in aluminium Alloy cellular body structure surface, form first and inhale ripple layer, then, by above-mentioned core shell structure TiO2Nano particle/Fe3O4Composite wood Material and isocyanates are configured to coating, again coated in aluminum alloy honeycomb structure surface, form second and inhale ripple layer, obtain aluminium alloy Honeycomb layer；Wherein, first inhales in ripple layer, core shell structure carbonyl iron dust/Fe3O4Composite content is 7% mass ratio, First suction ripple thickness degree is 0.1~0.3mm, and second inhales in ripple layer, core shell structure TiO2Nano particle/Fe3O4Composite content For 22% mass ratio, the second suction ripple thickness degree is 0.2~0.5mm；
Step 4, assemble
Silicone rubber material obtained above is inhaled into ripple layer, aluminum alloy honeycomb structure layer and isocyanates with isocyanate adhesive to answer The bonding of condensation material layer is inlayed together, forms multilayer high temperature resistant absorbent structure described herein.
CN201710633648.6A 2017-07-28 2017-07-28 A kind of multilayer high temperature resistant absorbent structure based on honeycomb Pending CN107415336A (en)

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Application publication date: 20171201