CN102493204A - Preparation method of hanging wave absorbing composite material - Google Patents
Preparation method of hanging wave absorbing composite material Download PDFInfo
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- CN102493204A CN102493204A CN2011104025038A CN201110402503A CN102493204A CN 102493204 A CN102493204 A CN 102493204A CN 2011104025038 A CN2011104025038 A CN 2011104025038A CN 201110402503 A CN201110402503 A CN 201110402503A CN 102493204 A CN102493204 A CN 102493204A
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Abstract
The invention discloses a preparation method of a hanging wave absorbing composite material, which relates to the preparation method of the wave absorbing composite material, and aims to solve the technical problems that the existing wave absorbing fabric which is produced from wave absorbing fibers has a complicated production technology, is higher in cost and has bad wave absorbing performance of the wave absorbing fabric which utilizes electromagnetic power to fill textile gaps. The method comprises the steps that: a wave absorbing body and a liquid organic polymer are mixed to obtain a sizing agent, the surface modification fabric is soaked in the sizing agent to be spread with the sizing agent, after frictioning, rolling or extruding operation, the hanging wave absorbing composite material can be obtained after solidifying and drying. The lowest reflectivity of the hanging wave absorbing composite material is in a range of -10 dB to -80dB, the absorbing bandwidth which is less than -10dB is in a range of 1-10GH, and the preparation technology is simple. The material can be used for military aircrafts, ships, missiles and other hiding military fields.
Description
Technical field
The present invention relates to the preparation method of Wave suction composite material.
Background technology
In the modern war, the technical development of radar absorbing is to improve one of key technology of stealth technology.The principle of work and power of absorbing material is that the energy with incident electromagnetic wave changes into heat energy loss and falls, thereby avoids electromagnetic reflection.Must satisfy two conditions if will realize this electromagnetic high efficiency is absorbed: at first electromagnetic wave can enter into absorbing material inside and can strong reflection not take place at incidence surface; Next electromagnetic wave that enters into material internal is changed into heat energy expeditiously.Common wave-absorbing and camouflage material is for to be dispersed in wave-absorber in the resin, and brushing realizes absorption of electromagnetic wave at aircraft surface.Compare with being coated with brush wave-absorbing and camouflage material, inhale the ripple fabric and have characteristics such as easy to use, repeatable use and excellent performance.Existing suction ripple fabric has two kinds: the one, become textiles with having the fiber process of inhaling wave energy, like metal fibre, carbon fiber and metallized fibre etc.The material of this method manufacturing has absorbing property preferably, but complicated process of preparation, and cost is higher.The 2nd, on fabric, apply functional material with absorbing property.Promptly, form suction ripple fabric with certain bearing capacity with space with electromagnetic powder filling fabric of inhaling wave energy.But in the present research, because employed filler is dusty raw materials, this powder is filled in the space of fabric, and is isolated by textile fabric between the powder, does not constitute continuous electromagnetic powder passage, is difficult to obtain good absorbing property.
Summary of the invention
The present invention be to solve existing suction ripple preparation process of textile with wave-absorption fibre preparation complicated and cost is higher, with the technical problem of the suction ripple fabric absorbing property difference in electromagnetic powder filling fabric space, and a kind of preparation method who puts on a suit of armour the formula Wave suction composite material is provided.
A kind of preparation method who puts on a suit of armour the formula Wave suction composite material of the present invention carries out according to the following steps:
One, wave-absorber and liquid organic polymer are mixed, add the curing agent of organic polymer then, mix again, obtain having mobile slurry; Wave-absorber in the step 1 is hollow carbon fiber and ferritic mixture, or the mixture of hollow carbon fiber and metal magnetic powder, or the mixture of hollow carbon fiber and carbon-based powder;
Two, textiles is immersed after surface modification in the slurry of step 1 preparation flood 0.5h～5h, obtain the hanging textiles; Wherein textiles has the hole of 10 μ m～1mm;
Three, the hanging textile surface that step 3 is obtained behind frictioning, roll extrusion or extrusion operation, oven dry obtains putting on a suit of armour the formula Wave suction composite material.
The present invention elder generation mainly soaks the surface modification of textiles through bases (NaOH etc.), remove the greasy dirt on surface, the surface of alligatoring textiles, the good combination of assurance textiles and wave absorbing agent.Use the further textiless that soak such as surface modifier (stearic acid, butyl titanate and Span80 etc.) then, change the polarity of textile surface, realize good binding with inhaling the ripple substrate macromolecule material, thus effective dispersion of realization wave-absorber.
Utilize liquid organic polymer matrix and wave-absorbing powder, mix earlier, the curing agent that adds matrix material then is mixed into slurry; To put into slurry as the textiles of carrier again and flood, after frictioning, roll extrusion or extruding are clamp-oned fibre bundle inside with slurry on the one hand; Another side is removed redundant sizing agent; Through oven dry matrix material and its curing agent are reacted then, wave-absorbing powder and textiles are combined with each other, obtain to put on a suit of armour the formula Wave suction composite material; Through method of the present invention, after liquid organic polymer solidified, for having elasticity and good flexible material, and wave-absorbing powder can be punished cloth with the fold of textile surface uniformly in the aperture of hollow carbon fiber.This distribution mode can make the composite magnetic powder in compound with fabric, still keeps continuous passage, realizes good absorbing property.The formula Wave suction composite material performance of putting on a suit of armour of the present invention is following: a, wave-absorber evenly disperse in passing through the ripple matrix; B, prepared composite materials microstructure are even; The minimum reflectivity (dB) of c, Wave suction composite material-10～-80dB, less than the absorption frequency range of-10dB at 1-10GH.Preparation technology of the present invention is simple simultaneously.
The put on a suit of armour formula Wave suction composite material of the present invention's preparation can carry out cutting by the profile of aircraft, makes, and the invisible clothes that can be used as aircraft is reused.Be used for military fields such as military spacecraft, naval vessel, guided missile.
The specific embodiment
The specific embodiment one: a kind of preparation method who puts on a suit of armour the formula Wave suction composite material of this embodiment carries out according to the following steps:
One, wave-absorber and liquid organic polymer are mixed, add the curing agent of organic polymer then, mix again, obtain having mobile slurry; Wave-absorber in the step 1 is hollow carbon fiber and ferritic mixture, or the mixture of hollow carbon fiber and metal magnetic powder, or the mixture of hollow carbon fiber and carbon-based powder;
Two, textiles is immersed after surface modification in the slurry of step 1 preparation flood 0.5h～5h, obtain the hanging textiles; Wherein textiles has the hole of 10 μ m～1mm;
Three, the hanging textile surface that step 3 is obtained behind frictioning, roll extrusion or extrusion operation, oven dry obtains putting on a suit of armour the formula Wave suction composite material.
The organic polymer of the liquid state of step 1 in this embodiment after the adding curing agent solidifies, at room temperature has pliability and elasticity.
The method of this embodiment, wave-absorbing powder can be punished cloth with the fold of textile surface uniformly in the aperture of hollow carbon fiber.This distribution mode can make the composite magnetic powder in compound with fabric, still keeps continuous passage, realizes good absorbing property.The formula Wave suction composite material performance of putting on a suit of armour of the present invention is following: a, wave-absorber evenly disperse in passing through the ripple matrix; B, prepared composite materials microstructure are even; The minimum reflectivity (dB) of c, Wave suction composite material-10～-80dB, less than the absorption frequency range of-10dB at 1-10GH.The preparation technology of this embodiment is simple simultaneously.
The specific embodiment two: this embodiment and the specific embodiment one are different is that organic polymer in the step 1 is liquid rubber, liquid-state silicon gel or liquid polyurethane.Other is identical with the specific embodiment one.
Liquid rubber, liquid-state silicon gel or liquid polyurethane are to have mobile liquid in this embodiment, are the commercially available prod.
The specific embodiment three: this embodiment is different with the specific embodiment one or two is that hollow carbon fiber and ferritic mass ratio are 1: 1～10 in hollow carbon fiber and the ferritic mixture in the step 1.Other is identical with the specific embodiment one or two.
The specific embodiment four: this embodiment is different with the specific embodiment one or two is that the mass ratio of hollow carbon fiber and metal magnetic powder is 1: 1～10 in the mixture of hollow carbon fiber and metal magnetic powder in the step 1.Other is identical with the specific embodiment one or two.
The specific embodiment five: what this embodiment was different with the specific embodiment one or two is in the step 1; In the step 1 in the mixture of hollow carbon fiber and carbon-based powder the mass ratio of hollow carbon fiber and carbon-based powder be 1: 1～10.Other is identical with the specific embodiment one or two.
The specific embodiment six: this embodiment is different with one of specific embodiment one to five is that textiles in the step 2 is linen, cotton or chemical fiber cloth etc.Other is identical with one of specific embodiment one to five.
The specific embodiment seven: this embodiment is different with one of specific embodiment one to six is that textile surface modification method in the step 2 is: earlier textiles is immersed in aqueous slkali 0.5h～10h; And then be immersed in the surface modification agent solution and soak 0.5h～10h, accomplish the surface modification of textiles.Other is identical with one of specific embodiment one to six.
The specific embodiment eight: this embodiment and the specific embodiment seven are different is that alkali in the textile surface modification method in the step 2 is meant NaOH, potassium hydroxide or ammoniacal liquor etc.Other is identical with one of specific embodiment seven.
The specific embodiment nine: this embodiment and the specific embodiment eight are different is that surface modifier in the textile surface modification method in the step 2 is meant stearic acid, butyl titanate or Span80 etc.Other is identical with one of specific embodiment eight.
The specific embodiment ten: this embodiment is different with one of specific embodiment one to nine is that the mass ratio of wave-absorber and rubber-like organic polymer is 0.5～20: 100 in the step 1.Other is identical with one of specific embodiment one to nine.
The specific embodiment 11: what this embodiment was different with one of specific embodiment one to ten is that the hollow carbon fiber described in the step 1 is by the said method preparation of the patent No.: ZL201010152182.6; Concrete preparation method carries out according to the following steps: one, carbon source material is put into graphite crucible; And graphite crucible placed atmosphere sintering furnace; With the atmosphere sintering stove evacuation, make the interior pressure of stove reach 0.1Pa～1Pa then; Two, in atmosphere sintering furnace, charge into high pure nitrogen or argon gas, make the interior gas pressure intensity of atmosphere sintering furnace reach 0.2MPa～2.5MPa; Three, be incubated 1h～4h after making temperature in the atmosphere sintering furnace rise to 900 ℃～1500 ℃ with the speed of 5 ℃/min～30 ℃/min,, promptly get hollow carbon fiber then with the stove cool to room temperature; Wherein the carbon source described in the step 1 is urea or is the mixture of polyvinyl alcohol and urea, wherein polyvinyl alcohol: the mass ratio of urea is 1: 50～100; The purity of high pure nitrogen is >=99.999% (quality) in the step 2; The purity of argon gas is >=99.999% (quality).Other is identical with the specific embodiment one.
The hollow carbon fiber for preparing in this embodiment is that caliber is 0.2 μ m～1 μ m, and length reaches the hollow carbon fiber of Centimeter Level.
The present invention is with following verification experimental verification beneficial effect of the present invention:
Test one: a kind of preparation method who puts on a suit of armour the formula Wave suction composite material of this test carries out according to the following steps:
One, takes by weighing the Fe that 5g hollow carbon fiber and 5g particle diameter are 10nm～10 μ m
3O
4Powder, 100g mould silica gel and 3g silica gel curing agent are earlier with hollow carbon fiber and Fe
3O
4Powder is put into ultrasonic dispersion 10min in the ultrasonic disperser, and then mixed powder is joined in the neoprene after mixing, and ultrasonic again dispersion 10min adds curing agent at last, mixes again, obtains having mobile slurry;
Two, linen being immersed in mass concentration is to soak 5 hours in 10% the sodium hydroxide solution; And then to be immersed in mass concentration be to soak 5 hours in 10% the butyl titanate solution; Be under 100 ℃ the condition after the oven dry in temperature; Immerse again in the slurry of step 1 preparation and flood 3h, obtain the hanging textiles; Wherein linen has the hole that the aperture is 0.5mm;
Three, the hanging textile surface that step 3 is obtained behind frictioning, be placed on temperature and be in 100 ℃ the baking oven and dry 50min, obtain putting on a suit of armour the formula Wave suction composite material.
The hollow carbon fiber described in the step 1 is by the said method preparation of the patent No.: ZL201010152182.6 in this test one; Concrete preparation method carries out according to the following steps: one, carbon source material is put into graphite crucible; And graphite crucible placed atmosphere sintering furnace; With the atmosphere sintering stove evacuation, make the interior pressure of stove reach 0.1Pa then; Two, in atmosphere sintering furnace, charge into high pure nitrogen, make the interior gas pressure intensity of atmosphere sintering furnace reach 0.2MPa; Three, be incubated 2h after making temperature in the atmosphere sintering furnace rise to 1200 ℃ with the speed of 5 ℃/min,, promptly get hollow carbon fiber then with the stove cool to room temperature; Wherein the carbon source described in the step 1 is the mixture of polyvinyl alcohol and urea, wherein polyvinyl alcohol: the mass ratio of urea is 1: 80; The purity of high pure nitrogen is >=99.999% (quality) in the step 2.
The put on a suit of armour formula Wave suction composite material of this test one preparation is cut three samples, is designated as 1#, 2# and 3#, carry out performance test, occurrence such as table 1:
The put on a suit of armour formula Wave suction composite material of table 1 test one preparation carries out performance
| Sample | The maximum reflection decay (dB) | The highest absorption band width (＜-10dB) |
| 1# | 25.403 | 5.88 |
| 2# | 51.777 | 4.77 |
| 3# | 37.324 | 7.28 |
Claims (10)
1. preparation method that can put on a suit of armour the formula Wave suction composite material is characterized in that the preparation method that can put on a suit of armour the formula Wave suction composite material carries out according to the following steps:
One, wave-absorber and liquid organic polymer are mixed, add the curing agent of organic polymer then, mix again, obtain having mobile slurry; Wave-absorber in the step 1 is hollow carbon fiber and ferritic mixture, or the mixture of hollow carbon fiber and metal magnetic powder, or the mixture of hollow carbon fiber and carbon-based powder;
Two, textiles is immersed after surface modification in the slurry of step 1 preparation flood 0.5h～10h, obtain the hanging textiles; Wherein textiles has the hole of 10 μ m～1mm;
Three, the hanging textile surface that step 3 is obtained behind frictioning, roll extrusion or extrusion operation, oven dry obtains putting on a suit of armour the formula Wave suction composite material.
2. a kind of preparation method who puts on a suit of armour the formula Wave suction composite material according to claim 1, the organic polymer that it is characterized in that the liquid state in the step 1 is liquid rubber, liquid-state silicon gel or liquid polyurethane.
3. a kind of preparation method who puts on a suit of armour the formula Wave suction composite material according to claim 1 and 2 is characterized in that hollow carbon fiber and ferritic mass ratio are 1: 1～10 in hollow carbon fiber and the ferritic mixture in the step 1.
4. a kind of preparation method who puts on a suit of armour the formula Wave suction composite material according to claim 1 and 2 is characterized in that the mass ratio of hollow carbon fiber and metal magnetic powder is 1: 1～10 in the mixture of hollow carbon fiber and metal magnetic powder in the step 1.
5. a kind of preparation method who puts on a suit of armour the formula Wave suction composite material according to claim 1 and 2 is characterized in that the mass ratio of hollow carbon fiber and carbon-based powder is 1: 1～10 in the mixture of hollow carbon fiber and carbon-based powder in the step 1.
6. a kind of preparation method who puts on a suit of armour the formula Wave suction composite material according to claim 1 and 2 is characterized in that the textiles in the step 2 is linen, cotton or chemical fiber cloth.
7. a kind of preparation method who puts on a suit of armour the formula Wave suction composite material according to claim 1 and 2; It is characterized in that the textile surface modification method in the step 2 is: earlier textiles is immersed in 0.5h～10h in the aqueous slkali; And then be immersed in the surface modification agent solution and soak 0.5h～10h, accomplish the surface modification of textiles.
8. a kind of preparation method who puts on a suit of armour the formula Wave suction composite material according to claim 7 is characterized in that the alkali of the textile surface modification method in the step 2 is meant NaOH, potassium hydroxide or ammoniacal liquor etc.
9. a kind of preparation method who puts on a suit of armour the formula Wave suction composite material according to claim 7 is characterized in that the surface modifier of the textile surface modification method in the step 2 is meant stearic acid, butyl titanate or Span80 etc.
10. a kind of preparation method who puts on a suit of armour the formula Wave suction composite material according to claim 1 and 2 is characterized in that the mass ratio of wave-absorber and rubber-like organic polymer is 0.5～20: 100 in the step 1.
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| CN201110402503.8A CN102493204B (en) | 2011-12-07 | 2011-12-07 | Preparation method of hanging wave absorbing composite material |
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| CN201110402503.8A CN102493204B (en) | 2011-12-07 | 2011-12-07 | Preparation method of hanging wave absorbing composite material |
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| CN105568664A (en) * | 2015-12-30 | 2016-05-11 | 浙江博尼锦纶科技有限公司 | Preparation method of polyamide textile material with good electromagnetic wave absorption ability in ultra-wide frequency spectrum range |
| CN105714553A (en) * | 2015-09-18 | 2016-06-29 | 安徽义林塑业有限公司 | Preparation method of wave-absorbing non-woven fabrics |
| CN107118559A (en) * | 2017-06-13 | 2017-09-01 | 安徽中研辐射防护有限公司 | A kind of enhanced Wave suction composite material and preparation method thereof |
| CN107123500A (en) * | 2017-06-13 | 2017-09-01 | 安徽中研辐射防护有限公司 | A kind of composite wave-suction material |
| CN107365135A (en) * | 2017-07-21 | 2017-11-21 | 无锡博轩电磁材料科技有限公司 | W types barium ferrite/carbonyl iron composite wave-absorbing silica gel piece and preparation method thereof |
| CN112941905A (en) * | 2021-02-22 | 2021-06-11 | 南通纺织丝绸产业技术研究院 | Carbon fiber radar wave-absorbing material |
| CN114481635A (en) * | 2022-02-10 | 2022-05-13 | 安徽隆润高分子材料有限公司 | Production method, device and application of equipment invisible cloth |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714553A (en) * | 2015-09-18 | 2016-06-29 | 安徽义林塑业有限公司 | Preparation method of wave-absorbing non-woven fabrics |
| CN105568664A (en) * | 2015-12-30 | 2016-05-11 | 浙江博尼锦纶科技有限公司 | Preparation method of polyamide textile material with good electromagnetic wave absorption ability in ultra-wide frequency spectrum range |
| CN105568664B (en) * | 2015-12-30 | 2017-08-01 | 浙江博尼锦纶科技有限公司 | A kind of preparation method of the polyamide-based textile material with good electro-magnetic wave absorption ability in ultra-wide spectral range |
| CN107118559A (en) * | 2017-06-13 | 2017-09-01 | 安徽中研辐射防护有限公司 | A kind of enhanced Wave suction composite material and preparation method thereof |
| CN107123500A (en) * | 2017-06-13 | 2017-09-01 | 安徽中研辐射防护有限公司 | A kind of composite wave-suction material |
| CN107365135A (en) * | 2017-07-21 | 2017-11-21 | 无锡博轩电磁材料科技有限公司 | W types barium ferrite/carbonyl iron composite wave-absorbing silica gel piece and preparation method thereof |
| CN112941905A (en) * | 2021-02-22 | 2021-06-11 | 南通纺织丝绸产业技术研究院 | Carbon fiber radar wave-absorbing material |
| CN114481635A (en) * | 2022-02-10 | 2022-05-13 | 安徽隆润高分子材料有限公司 | Production method, device and application of equipment invisible cloth |
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