CN107974069A - A kind of carbon nanotubes base absorbing meta-material base material and preparation method thereof - Google Patents
A kind of carbon nanotubes base absorbing meta-material base material and preparation method thereof Download PDFInfo
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- CN107974069A CN107974069A CN201610919172.8A CN201610919172A CN107974069A CN 107974069 A CN107974069 A CN 107974069A CN 201610919172 A CN201610919172 A CN 201610919172A CN 107974069 A CN107974069 A CN 107974069A
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- 239000000463 material Substances 0.000 title claims abstract description 109
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 239000002041 carbon nanotube Substances 0.000 title claims abstract description 64
- 229910021393 carbon nanotube Inorganic materials 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 24
- 229920001971 elastomer Polymers 0.000 claims abstract description 22
- 239000005060 rubber Substances 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- 239000002270 dispersing agent Substances 0.000 claims abstract description 10
- 239000012752 auxiliary agent Substances 0.000 claims description 14
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- 235000021355 Stearic acid Nutrition 0.000 claims description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 7
- 239000008117 stearic acid Substances 0.000 claims description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 6
- 239000005864 Sulphur Substances 0.000 claims description 6
- 229920002379 silicone rubber Polymers 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 229920002943 EPDM rubber Polymers 0.000 claims description 4
- 229920005549 butyl rubber Polymers 0.000 claims description 4
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000004073 vulcanization Methods 0.000 abstract description 4
- 240000008042 Zea mays Species 0.000 abstract description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 abstract description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 abstract description 2
- 235000005822 corn Nutrition 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 229910052711 selenium Inorganic materials 0.000 abstract description 2
- 239000011669 selenium Substances 0.000 abstract description 2
- 239000000843 powder Substances 0.000 description 14
- 238000007731 hot pressing Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 150000002978 peroxides Chemical class 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical group [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- RWGFKTVRMDUZSP-UHFFFAOYSA-N cumene Chemical compound CC(C)C1=CC=CC=C1 RWGFKTVRMDUZSP-UHFFFAOYSA-N 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/06—Sulfur
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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- Carbon And Carbon Compounds (AREA)
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Abstract
The present invention provides a kind of carbon nanotubes base absorbing meta-material base material and preparation method thereof, this method includes：Carbon nanotubes is added in raw rubber, adds vulcanizing agent and dispersant；It is put into mixer and is uniformly mixed, obtains mixture；Mixture is put into hot-forming in hot press, dries, obtain carbon nanotubes base absorbing meta-material base material.The carbon nanotubes base absorbing meta-material base material has regulated and controled the electromagnetic parameter of absorbing meta-material base material, the wide-band high-selenium corn of Meta Materials base material can be achieved, and the carbon nanotubes passes through the mechanical property of the carbon nanotubes base absorbing meta-material base material prepared with raw rubber generation vulcanization reaction raising.
Description
Technical field
The present invention relates to Material Field, more particularly, to a kind of carbon nanotubes base absorbing meta-material base material and its preparation
Method.
Background technology
In recent years, absorbing meta-material is realizing the radar invisible of military equipment, is preventing electromagnetic pollution etc. from having played weight
The effect wanted.Good absorbing material, which can be effectively absorbed and decayed, incides the energy on its surface, is effectively reduced electromagnetic wave
In the reflection, scattering and transmission of body surface, so as to fulfill stealthy purpose.
Carbon nanotubes has peculiar conduction property, rolled fashion when it can form carbon nanotubes because of graphene it is different and
Metallicity and semiconductive are showed, can be converted between metallicity and semiconductive.Carbon nanotubes has itself uniqueness
Mechanics, electrical and optical properties.As diameter is different with configuration, its conductive capability is different.It is special due to carbon nanotubes
Structure and dielectric property, it possesses stronger wide-band microwave absorbent properties, and the electromagnetic wave for being transmitted to the material surface is absorbed, no
Produce reflection.Have that light-weight, thickness is thin, the flexible and excellent mechanical property such as compressible plus carbon nanotubes, therefore,
Available for stealth material, electromagnetic shielding etc..
At present, in national defense and military fields, the research of stealth technology is most important, and new to carbon nanotubes, graphene etc.
The research and application of type stealth material are then the important foundation and key of stealth technology development.Due to traditional absorbing meta-material master
Using the material of the low-ks such as polytetrafluoroethylene (PTFE), electromagnetic parameter adjustable space is limited, causes suction ripple to surpass material as base material
The problems such as absorbing property optimization space of material is limited, and mechanical property needs to be further improved, thus it is new to carbon nanotubes etc.
The development and exploitation of absorbing meta-material become ever more important.
The content of the invention
The present invention has regulated and controled absorbing meta-material base material by adding the relatively low carbon nanotube powder of surface energy in raw rubber
Electromagnetic parameter, and can should as following the potential of Stealth weapons equipment, it can be achieved that the wide-band high-selenium corn of Meta Materials base material
Use material.
Raw rubber provides necessary flexibility, HI high impact modulus etc. for base material.The use of auxiliary agent improves carbon nanotube powder
Dispersiveness in raw rubber, and improve the carbon nanotubes base absorbing meta-material base material prepared by the way that vulcanization reaction occurs with raw rubber
Mechanical property.Therefore, auxiliary agent is added, after mixing the hot-forming absorbing meta-material base that can obtain that there is stealthy effect
Material.At the same time by adjusting the proportioning of each component, the lightweight carbon nanotubes base absorbing meta-material base material that can be attached can be prepared.This
The carbon nanotubes base absorbing meta-material of invention improves absorbing meta-material while traditional absorbing meta-material mechanical property is improved
The Stealth Fighter of base material.
The present invention provides a kind of method for preparing carbon nanotubes base absorbing meta-material base material, including：By carbon nanotubes plus
Enter into raw rubber, and add auxiliary agent, wherein, the auxiliary agent includes vulcanizing agent and dispersant；It is put into mixer and is uniformly mixed, obtains
To mixture；The mixture is put into hot-forming in hot press, dries, obtain the carbon nanotubes base absorbing meta-material base
Material.
In the above-mentioned methods, wherein, the raw rubber is included in polyurethane, ethylene propylene diene rubber, silicon rubber, butyl rubber
It is one or more.
In the above-mentioned methods, wherein, the vulcanizing agent includes one or both of cumyl peroxide and sulphur.
In the above-mentioned methods, wherein, the dispersant includes one or both of stearic acid and silane coupling agent.
In the above-mentioned methods, wherein, the mass ratio of the raw rubber, the carbon nanotubes and the auxiliary agent is 100：0.1~
5：1.5~13.
In the above-mentioned methods, wherein, the mass ratio of the vulcanizing agent and the dispersant is 1~5：0.5~8.
In the above-mentioned methods, wherein, the temperature of the mixer is 60~100 DEG C.
In the above-mentioned methods, wherein, the hot-forming temperature of the hot press is 150~200 DEG C.
In the above-mentioned methods, wherein, the hot-forming pressure of the hot press is 5~25MPa.
In the above-mentioned methods, wherein, the hot press hot-forming time is 10~60min.
Present invention also offers a kind of carbon nanotubes base absorbing meta-material base material prepared according to above method.
By the method for preparation carbon nanotubes base absorbing meta-material base material provided by the invention, obtain that there is stealthy effect
Absorbing meta-material base material, can be as the potential application material of following Stealth weapons equipment.Carbon nanotubes regulates and controls Meta Materials base material
Electromagnetic parameter, auxiliary agent improves dispersiveness of the carbon nanotubes in raw rubber matrix, and carbon nanotubes with raw rubber by occurring
Vulcanization reaction improves the mechanical property of the carbon nanotubes base absorbing meta-material base material of preparation.In addition, the carbon nanotubes of the present invention
The Stealth Fighter of base absorbing meta-material base material is better than the Stealth Fighter of traditional absorbing meta-material.
Brief description of the drawings
Fig. 1 is the preparation flow schematic diagram of carbon nanotubes base absorbing meta-material base material.
Embodiment
The following examples can make those skilled in the art that the present invention be more fully understood, but not limit in any way
The present invention.
The preparation method of the carbon nanotubes base absorbing meta-material base material of the present invention, selects carbon nanotube powder, raw rubber and helps
Agent mixes, and is uniformly mixed in mixer, and obtained mixture is put into hot-forming in hot press, dries, obtains carbon nanotubes
Base absorbing meta-material base material.By setting carbon nanotube powder, raw rubber and the ratio of auxiliary agent so that the relatively low carbon nanometer of surface energy
Pipe powder has good dispersion degree and excellent mechanical property in raw rubber base material, can prepare pasting for good mechanical performance
Attached lightweight carbon nanotubes base absorbing meta-material base material.
Carbon nanotube powder is added in raw rubber, and adds auxiliary agent, the mass ratio of raw rubber, carbon nanotube powder and auxiliary agent
For 100：0.1~5：1.5~13；Auxiliary agent includes vulcanizing agent and dispersant, wherein, the ratio of vulcanizing agent and dispersant is 1~5:0.5
~8；Raw rubber is polyurethane, the one or more in ethylene propylene diene rubber, silicon rubber, butyl rubber；Vulcanizing agent is peroxidating two
One or both of isopropylbenzene and sulphur；Dispersant is one or both of stearic acid, silane coupling agent.
It is put into 60~100 DEG C of mixer and is uniformly mixed, hot press is put into after obtaining mixture, in the pressure of 5~25MPa
Power, 10~60min of hot pressing is molded at a temperature of 150~200 DEG C, is dried, is obtained carbon nanotubes base absorbing meta-material base material.
Embodiment one
0.1g carbon nanotube powders are added in 100g polyurethane, and it is stearic to add 2g cumyl peroxides, 0.5g
Acid and 0.5g silane coupling agents；
It is put into 70 DEG C of mixer and is uniformly mixed, hot press is put into after obtaining mixture, pressure in 25MPa, 170 DEG C
At a temperature of hot pressing 10min be molded, dry, obtain carbon nanotubes base absorbing meta-material base material.
Embodiment two
1g carbon nanotube powders are added in 100g ethylene propylene diene rubbers, and add 3g cumyl peroxides, 1.5g
Stearic acid and 1.5g silane coupling agents；
It is put into 70 DEG C of mixer and is uniformly mixed, hot press is put into after obtaining mixture, pressure in 25MPa, 170 DEG C
At a temperature of hot pressing 10min be molded, dry, obtain carbon nanotubes base absorbing meta-material base material.
Embodiment three
3g carbon nanotube powders are added in 100g silicon rubber, and it is silane coupled to add 4g sulphur, 3g stearic acid and 3g
Agent；
It is put into 70 DEG C of mixer and is uniformly mixed, hot press is put into after obtaining mixture, pressure in 25MPa, 180 DEG C
At a temperature of hot pressing 40min be molded, dry, obtain carbon nanotubes base absorbing meta-material base material.
Example IV
5g carbon nanotube powders are added in 100g butyl rubbers, and add 5g cumyl peroxides, 4g stearic acid
With 4g silane coupling agents；
It is put into 70 DEG C of mixer and is uniformly mixed, hot press is put into after obtaining mixture, pressure in 25MPa, 190 DEG C
At a temperature of hot pressing 60min be molded, dry, obtain carbon nanotubes base absorbing meta-material base material.
Embodiment five
4g carbon nanotube powders are added in 100g polyurethane, and add 1g sulphur and 0.5g stearic acid；
It is put into 60 DEG C of mixer and is uniformly mixed, hot press is put into after obtaining mixture, pressure in 10MPa, 200 DEG C
At a temperature of hot pressing 60min be molded, obtain carbon nanotubes base absorbing meta-material base material.
Embodiment six
0.5g carbon nanotube powders are added in 100g silicon rubber, and add 1g cumyl peroxides and 8g silane idol
Join agent；
It is put into 100 DEG C of mixer and is uniformly mixed, hot press is put into after obtaining mixture, pressure in 15MPa, 150
Hot pressing 20min is molded at a temperature of DEG C, obtains carbon nanotubes base absorbing meta-material base material.
Embodiment seven
1g carbon nanotube powders are added in 100g silicon rubber, and add 5g sulphur and 0.5g silane coupling agents；
It is put into 100 DEG C of mixer and is uniformly mixed, hot press is put into after obtaining mixture, pressure in 15MPa, 180
Hot pressing 30min is molded at a temperature of DEG C, obtains carbon nanotubes base absorbing meta-material base material.
The carbon nanotubes base absorbing meta-material base material that embodiment one to seven obtains is cut into the specification of 300mm*300mm,
Reflectivity is tested in darkroom, and the result of obtained reflection loss is as follows：
Table 1, test result
| Test frequency | Reflection loss | |
| Embodiment one | 17-18Ghz | -2dB |
| Embodiment two | 10-14Ghz | -4dB |
| Embodiment three | 5-8Ghz | -7dB |
| Example IV | 3-5Ghz | -9dB |
| Embodiment five | 4-7Ghz | -8dB |
| Embodiment six | 12-15Ghz | -2dB |
| Embodiment seven | 15-16Ghz | -3dB |
By table 1 as it can be seen that the present invention obtains carbon nanotubes base absorbing meta-material base material in the specification of 300mm*300mm, 3-
Reflection loss in the range of the absorption frequency of 18Ghz is both less than -2dB, and uses the advanced low-k materials such as polytetrafluoroethylene (PTFE)
The reflection loss of traditional absorbing meta-material base material is generally more than -2dB.The reason for producing this property is the ratio table of carbon nanotubes
Area is stronger than general material, and the reflection loss of electromagnetic wave is low, and the use of auxiliary agent makes carbon nanotubes be evenly dispersed in raw rubber matrix
In, stealthy effect can be reached.In addition, by the way that vulcanization reaction occurs with raw rubber, the mechanical property of the base material of preparation is improved.
Therefore, the absorbing property of carbon nanotubes base absorbing meta-material base material of the invention is better than traditional absorbing meta-material base material.And 3
~18GHz is very important radar detection wave band, and the emphasis of stealth technology research, therefore carbon nanometer prepared by the present invention
Pipe base absorbing meta-material base material has good stealthy effect.
It will be understood by those skilled in the art that above example is only exemplary embodiment, in the spirit without departing substantially from the present invention
In the case of scope, a variety of changes can be carried out, replaces and changes.
Claims (11)
- A kind of 1. method for preparing carbon nanotubes base absorbing meta-material base material, it is characterised in that including：Carbon nanotubes is added in raw rubber, and adds auxiliary agent, wherein, the auxiliary agent includes vulcanizing agent and dispersant；It is put into mixer and is uniformly mixed, obtains mixture；The mixture is put into hot-forming in hot press, dries, obtain the carbon nanotubes base absorbing meta-material base material.
- 2. according to the method described in claim 1, it is characterized in that, the raw rubber includes polyurethane, ethylene propylene diene rubber, silicon rubber One or more in glue, butyl rubber.
- 3. according to the method described in claim 1, it is characterized in that, the vulcanizing agent is included in cumyl peroxide and sulphur One or two.
- 4. according to the method described in claim 1, it is characterized in that, the dispersant is included in stearic acid and silane coupling agent It is one or two kinds of.
- 5. the according to the method described in claim 1, it is characterized in that, matter of the raw rubber, the carbon nanotubes and the auxiliary agent Amount is than being 100：0.1~5：1.5~13.
- 6. according to the method described in claim 1, it is characterized in that, the mass ratio of the vulcanizing agent and the dispersant for 1~ 5：0.5~8.
- 7. according to the method described in claim 1, it is characterized in that, the temperature of the mixer is 60~100 DEG C.
- 8. according to the method described in claim 1, it is characterized in that, the hot-forming temperature of the hot press is 150~200 ℃。
- 9. according to the method described in claim 1, it is characterized in that, the hot-forming pressure of the hot press is 5~25MPa.
- 10. according to the method described in claim 1, it is characterized in that, the hot press hot-forming time for 10~ 60min。
- A kind of 11. carbon nanotubes base absorbing meta-material base material prepared by method according to any one of claim 1-10.
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| CN116333499A (en) * | 2023-02-28 | 2023-06-27 | 南京航空航天大学 | Wave-absorbing low-shrinkage methyl vinyl silicone rubber and preparation method thereof |
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Application publication date: 20180501 |