CN110499027A - A kind of anti-radiation wave absorbing material and preparation method thereof - Google Patents
A kind of anti-radiation wave absorbing material and preparation method thereof Download PDFInfo
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- CN110499027A CN110499027A CN201810483252.2A CN201810483252A CN110499027A CN 110499027 A CN110499027 A CN 110499027A CN 201810483252 A CN201810483252 A CN 201810483252A CN 110499027 A CN110499027 A CN 110499027A
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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
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding 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
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- C08K3/042—Graphene or derivatives, e.g. graphene oxides
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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- C08K3/22—Oxides; Hydroxides of metals
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K7/04—Fibres or whiskers inorganic
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0083—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive non-fibrous particles embedded in an electrically insulating supporting structure, e.g. powder, flakes, whiskers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/009—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive fibres, e.g. metal fibres, carbon fibres, metallised textile fibres, electro-conductive mesh, woven, non-woven mat, fleece, cross-linked
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
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Abstract
The invention discloses a kind of anti-radiation wave absorbing materials, by weight percentage, it is grouped as by the following raw material group: silica gel 70-85%, graphite 3-10%, graphene 1-5%, carbon fiber 0.1-6%, carbon nanometer 0.1-5%, ferrite 1-3%, metal oxide 0.1-3%, solvent 0.1-2%.The present invention protects frequency range broad, and electro-magnetic wave absorption effect is strong, while radiation protection and will not obstruct and influence the normal communications signal of electronic equipment.
Description
Technical field
The present invention relates to a kind of radiation proof material and preparation method thereof, more particularly to a kind of anti-radiation wave absorbing material
Material and preparation method thereof, belongs to radiation protection technology field.
Background technique
Household electrical appliance are more and more, and whens all electronic device works requires to release a large amount of electromagnetic field, these electricity
The radiation that magnetic field generates has become our natural enemy.We are at every moment companion therewith, from the bigger harm of nearlyr radiation
It is bigger.Especially portable mobile phone has become the indispensable communication converter tools of the people, and radiation becomes
The theme of world today's common concern, many documents also record radiation be easy it is carcinogenic, radiation easily cause people nervous centralis and
The dysfunction of psychiatric system is mainly manifested in dizzy tired power, memory loss, appetite stimulator, the inferior healths disease such as insomnia, amnesia
Shape will affect the circulatory system, immune system, reproductive system and the metabolic function of human body, also so as to cause a variety of diseases when serious
Appearance, such as: leukemia of children, senile dementia, infertility, pregnant woman miscarriage and fetal anomaly hypoplasia, children
The diseases such as dysnoesia.Therefore, radiation proof material becomes people for an anti-radiation focus on research direction.
Anti-radiation wave absorbing material currently on the market generally uses metal oxide shielded layer to constitute as radiation protective layer, prevents
It is low to protect frequency range, shielding assimilation effect is poor, and is easy the normal signal of communication of barrier.Such as the high-frequency signal of mobile phone, wireless network
The transmitting signal of network is easy to be shielded by metal radiation protective layer, to seriously affect the speech quality of mobile phone and the letter of network
Number.
China Patent No. is CN201010559087.8, and the applying date is a patent application on November 25th, 2010, open
A kind of radiation proof material, radiation proof material are multilayered structure, and include at least one layer of light metal layers and one layer of heavy metal layer, gently
Metal layer is kneaded to obtain by thermoplastic elastomer with light metal, and heavy metal layer is by thermoplastic elastomer and the not weight including lead, cadmium
Metal powder is kneaded to obtain.It belongs to a kind of material of metallic shield, and such material is to mask the same of electronic equipment radiation
When can also mask the signal, such as mobile phone signal, wireless network signal etc. of electronic equipment, to seriously affect the call of mobile phone
The signal of quality and network.And heavy metal is expensive, and processing pollution is serious.
Therefore, how to provide a kind of electro-magnetic wave absorption effect it is strong and do not influence the anti-radiation wave absorbing material of normal communication and
Preparation method becomes the problem of those skilled in the art's urgent need to resolve.
Summary of the invention
In view of this, protection frequency range is broad, electromagnetism the present invention provides a kind of anti-radiation wave absorbing material and preparation method thereof
Wave assimilation effect is strong, while radiation protection and will not obstruct and influence the normal communications signal of electronic equipment.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of anti-radiation wave absorbing material is grouped as by the following raw material group by weight percentage: silica gel 70-85%, graphite
3-10%, graphene 1-5%, carbon fiber 0.1-6%, carbon nanometer 0.1-5%, ferrite 1-3%, metal oxide 0.1-3%
With solvent 0.1-2%.
Preferably, by weight percentage, be grouped as by the following raw material group: silica gel 80%, graphite 7%, graphene 3%,
Carbon fiber 3%, carbon nanometer 3%, ferrite 2%, metal oxide 1% and solvent 1%.
Preferably, the ferrite is one of permanent-magnet ferrite, soft magnetic ferrite and gyromagnetic ferrite or any group
Match.
Preferably, the metal oxide includes PbO, BaO, La2O3、Bi2O3And WO3One of or a variety of mixing.
Preferably, the solvent is one of methanol, acetone, methylene chloride, n-hexane, benzene and toluene or a variety of mixed
It closes.
A kind of preparation method of anti-radiation wave absorbing material, includes the following steps:
(1) the following raw material, silica gel 70-85%, graphite 3-10%, graphene 1-5%, carbon are mixed in proportion at normal temperature
Fiber 0.1-6%, carbon nanometer 0.1-5%, ferrite 1-3%, metal oxide 0.1-3% and solvent 0.1-2%；
(2) after the material that step (1) mixes being carried out baking filtering, broken stirring is carried out；
(3) mixing material for stirring evenly step (2) high-temperature digestion in extruder is molded slabbing by squeezing,
Then cooling, demoulding.
Preferably, the step further include: the material after demoulding is subjected to cutting process.
Preferably, baking condition described in step (2) is to toast 3-5 hours at 95-105 DEG C.
Preferably, solution temperature is 165-235 DEG C in step (3), injection pressure 90-120MPa.
It can be seen via above technical scheme that compared with prior art, the present disclosure provides a kind of anti-radiation wave absorbings
Material and preparation method thereof is mainly used for the shielding of the radiation of IT product and electronic equipment and the absorption of electromagnetic wave, it
The electromagnetic wave that electronic equipment releases can preferably be absorbed.
Radiation proof material of the present invention has the function of weakening electromagnetic radiation, and electromagnetic wave is converted into thermal energy by electromagnetic wave absorption
It discharges.And rebecca detection can be effectively prevented, it prevents from releasing when information communication device and electronic device works
Electromagnetic radiation to the interference of other electronic equipments, prevent the harm of Radiation On Human body health.
It can according to need and be cut into shape of different sizes to meet the needs of different industries different product, also can be used
Different die cavitys is directly molded into shape required for client and product is facilitated directly to process work using to save subsequent cross cutting
Sequence.
The present invention protects frequency range broad, and electro-magnetic wave absorption effect is strong, within the scope of frequency range 1MHz -18GHz, using difference
Material rate configure can be achieved optimal absorption radiation effect, electromagnetic wave attenuation 6-28dB can be made by electromagnetic absorption.And
The normal communications signal of electronic equipment will not be obstructed and influenced while radiation protection.Thickness is thin, light-weight, heatproof, moisture-proof, resistance to
The various excellent performances such as corrosion, facilitate and apply the electronic equipment big in radiation such as portable computers, in order to radiate to electronic equipment
Protection.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The embodiment of the invention discloses a kind of anti-radiation wave absorbing material, has the function of weakening electromagnetic radiation, absorb electromagnetism
Electromagnetic wave is converted into thermal energy and discharged by wave.And rebecca detection can be effectively prevented, prevent information communication device and electricity
When sub- equipment works the electromagnetic radiation that releases to the interference of other electronic equipments, prevent the harm of Radiation On Human body health.
Embodiment 1
A kind of anti-radiation wave absorbing material is grouped as by the following raw material group by weight percentage: silica gel 70%, graphite
10%, graphene 5%, carbon fiber 6%, carbon nanometer 5%, soft magnetic ferrite 0.9%, PbO3% and methanol 0.1%.
A kind of preparation method of anti-radiation wave absorbing material, includes the following steps:
(1) mixing of each raw material is carried out according to the above ratio at normal temperature.
(2) 3 hours the screen to filtrates again are toasted at 95 DEG C in the material progress that step (1) mixes, removes the water in raw material
Point and residue and particle, then carry out it is broken stir evenly, make grain graininess in 15 μ ms.
(3) mixing material for being stirred evenly step (2) high-temperature digestion in extruder, solution temperature are 165 DEG C, so
Dissolved matter injection is entered in die cavity by squeezing injection molding slabbing, injection pressure 90MPa, after natural cooling by nozzle afterwards
Carry out demoulding processing.
(4) it can according to need and be cut into shape of different sizes to meet the needs of different industries different product, it can also be with
Directly being molded into shape required for client using different die cavitys facilitates product directly to add using to save subsequent cross cutting
Work process.
Radiation proof material of the present invention has the function of weakening electromagnetic radiation, and electromagnetic wave is converted into thermal energy by electromagnetic wave absorption
It discharges.And rebecca detection can be effectively prevented, it prevents from releasing when information communication device and electronic device works
Electromagnetic radiation to the interference of other electronic equipments, prevent the harm of Radiation On Human body health.Be mainly used for IT product and
The shielding of the radiation of electronic equipment and the absorption of electromagnetic wave, it can preferably absorb the electromagnetic wave that electronic equipment releases.
Embodiment 2
A kind of anti-radiation wave absorbing material is grouped as by the following raw material group by weight percentage: by weight percentage,
It is grouped as by the following raw material group: silica gel 80%, graphite 7%, graphene 3%, carbon fiber 3%, carbon nanometer 3%, gyromagnetic ferrite
2%, BaO1% and methanol 0.5%, acetone 0.5%.
A kind of preparation method of anti-radiation wave absorbing material, includes the following steps:
(1) mixing of each raw material is carried out according to the above ratio at normal temperature.
(2) 4 hours the screen to filtrates again are toasted at 100 DEG C in the material progress that step (1) mixes, removes the water in raw material
Point and residue and particle, then carry out it is broken stir evenly, make grain graininess in 20 μ ms.
(3) mixing material for being stirred evenly step (2) high-temperature digestion in extruder, solution temperature are 200 DEG C, so
Dissolved matter injection is entered in die cavity by squeezing injection molding slabbing, injection pressure 105MPa, in natural cooling by nozzle afterwards
After carry out demoulding processing.
(4) it can according to need and be cut into shape of different sizes to meet the needs of different industries different product, it can also be with
Directly being molded into shape required for client using different die cavitys facilitates product directly to add using to save subsequent cross cutting
Work process.
Embodiment 3
A kind of anti-radiation wave absorbing material is grouped as by the following raw material group by weight percentage: by weight percentage,
It is grouped as by the following raw material group: silica gel 85%, graphite 3%, graphene 0.8%, carbon fiber 6%, carbon nanometer 0.1%, permanent magnet
Oxysome 3%, La2O30.1% and methylene chloride 1%, n-hexane 1%.
A kind of preparation method of anti-radiation wave absorbing material, includes the following steps:
(1) mixing of each raw material is carried out according to the above ratio at normal temperature.
(2) 5 hours the screen to filtrates again are toasted at 105 DEG C in the material progress that step (1) mixes, removes the water in raw material
Point and residue and particle, then carry out it is broken stir evenly, make grain graininess in 30 μ ms.
(3) mixing material for being stirred evenly step (2) high-temperature digestion in extruder, solution temperature are 235 DEG C, so
Dissolved matter injection is entered in die cavity by squeezing injection molding slabbing, injection pressure 120MPa, in natural cooling by nozzle afterwards
After carry out demoulding processing.
(4) it can according to need and be cut into shape of different sizes to meet the needs of different industries different product, it can also be with
Directly being molded into shape required for client using different die cavitys facilitates product directly to add using to save subsequent cross cutting
Work process.
Embodiment 4
A kind of anti-radiation wave absorbing material is grouped as by the following raw material group by weight percentage: by weight percentage,
It is grouped as by the following raw material group: silica gel 83%, graphite 5%, graphene 0.8%, carbon fiber 0.1%, carbon nanometer 5%, ferrite
3%, Bi2O31.5%, WO31.5% and benzene 0.05%, toluene 0.05%.
A kind of preparation method of anti-radiation wave absorbing material, includes the following steps:
(1) mixing of each raw material is carried out according to the above ratio at normal temperature.
(2) 3 hours the screen to filtrates again are toasted at 100 DEG C in the material progress that step (1) mixes, removes the water in raw material
Point and residue and particle, then carry out it is broken stir evenly, make grain graininess in 25 μ ms.
(3) mixing material for being stirred evenly step (2) high-temperature digestion in extruder, solution temperature are 210 DEG C, so
Dissolved matter injection is entered in die cavity by squeezing injection molding slabbing, injection pressure 100MPa, in natural cooling by nozzle afterwards
After carry out demoulding processing.
(4) it can according to need and be cut into shape of different sizes to meet the needs of different industries different product, it can also be with
Directly being molded into shape required for client using different die cavitys facilitates product directly to add using to save subsequent cross cutting
Work process.
Comparative example 1
A kind of anti-radiation wave absorbing material is grouped as by the following raw material group by weight percentage: by weight percentage,
It is grouped as by the following raw material group: silica gel 60%, graphite 15%, graphene 10%, carbon fiber 3%, carbon nanometer 3%, permanent magnet oxygen
Body 5%, PbO3%, methanol 1%.
Preparation method is the same as embodiment 2.
Comparative example 2
A kind of radiation proof material, including following components: smart iron powder 1.5%, the grain of graphite powder 2%, granularity at 20~40 μm
Spend calcium carbonate 5-10%, the nano-graphene/bismuth molybdate 1%, nanometer two more than 20~40 μm of ferrite powders 1.5%, 500 mesh
Titanium oxide 1%, granularity are in 20~40 μm of pigment preparations 0.1-0.5%, antiaging agent 2.5%, dispersing agent 0.5%, engineering plastic
Expect 80-85%.
A kind of preparation method of above-mentioned radiation proof material, technical process specifically include that raw material drying-melting filling-guarantor
Press cooling-demoulding；
The specific steps of which are as follows:
(1) raw material drying
It is mixed in proportion raw materials used, 4-5 hours dry under the conditions of 90-105 DEG C of nitrogen protection, moisture content control
System is in 200ppm or less；
(2) mould filling is melted
Raw material after will be dry in step (1), melts at 160-180-190-230 DEG C through screw extruder, nozzle temperature
It is 170-190 DEG C, die head temperature is 20-70 DEG C, in 5 seconds in injection fillers to mold cavity, injection pressure 80-
100MPa；
(3) pressure maintaining and cooling
Dwell pressure is 30-85MPa, dwell time 20-90 second；Cooling temperature be 25-60 DEG C, cooling time 30-80
Second；
(4) demould: moulding first toasts 10 minutes in 100~105 DEG C of baking oven, then at 120~125 DEG C again
Baking 30 minutes, naturally cools to room temperature finally to get radiation protection injecting products.
Table 1 is the anti-radiation wave absorbing material absorption property table of embodiment 1-4 and comparative example 1-2.
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative example 1 | Comparative example 2 | |
| Absorptivity | 85% | 92% | 86% | 89% | 30% | 35% |
By table 1 can obtain material of the present invention to the absorptivity of electromagnetic wave up to 85% or more, absorption property is far more than pair
The absorbing material of ratio 1-2.
The present invention protects frequency range broad, and electro-magnetic wave absorption effect is strong, and ratio is different, and the product radiation protection frequency range being made into is not
Together, within the scope of frequency range 1MHz -18GHz, being configured using different material rates can be achieved optimal absorption radiation effect, lead to
Electromagnetic wave attenuation 6-28dB can be made by crossing electromagnetic absorption.And the normal of electronic equipment will not be obstructed and influenced while radiation protection
Signal of communication.Thickness is thin, light-weight, heatproof, moisture-proof, the various excellent performances such as corrosion-resistant, facilitates and applies in spokes such as portable computers
Big electronic equipment is penetrated, in order to the protection radiated to electronic equipment.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. a kind of anti-radiation wave absorbing material, which is characterized in that by weight percentage, be grouped as by the following raw material group: silica gel 70-
85%, graphite 3-10%, graphene 1-5%, carbon fiber 0.1-6%, carbon nanometer 0.1-5%, ferrite 1-3%, metal oxidation
Object 0.1-3% and solvent 0.1-2%.
2. a kind of anti-radiation wave absorbing material according to claim 1, which is characterized in that by weight percentage, by as follows
Raw material components composition: silica gel 80%, graphite 7%, graphene 3%, carbon fiber 3%, carbon nanometer 3%, ferrite 2%, metal oxygen
Compound 1% and solvent 1%.
3. a kind of anti-radiation wave absorbing material according to claim 1 or 2, which is characterized in that the ferrite is permanent magnet
One of oxysome, soft magnetic ferrite and gyromagnetic ferrite arbitrarily assemble.
4. a kind of anti-radiation wave absorbing material according to claim 1 or 2, which is characterized in that the metal oxide includes
PbO、BaO、La2O3、Bi2O3And WO3One of or a variety of mixing.
5. a kind of anti-radiation wave absorbing material according to claim 1 or 2, which is characterized in that the solvent is methanol, third
One of ketone, methylene chloride, n-hexane, benzene and toluene or a variety of mixing.
6. a kind of preparation method of anti-radiation wave absorbing material, which comprises the steps of:
(1) the following raw material, silica gel 70-85%, graphite 3-10%, graphene 1-5%, carbon fiber are mixed in proportion at normal temperature
0.1-6%, carbon nanometer 0.1-5%, ferrite 1-3%, metal oxide 0.1-3%, solvent 0.1-2%；
(2) after the material that step (1) mixes being carried out baking filtering, broken stirring is carried out；
(3) mixing material for stirring evenly step (2) high-temperature digestion in extruder is molded slabbing by squeezing, then
Cooling, demoulding.
7. a kind of preparation method of anti-radiation wave absorbing material according to claim 6, which is characterized in that the step is also wrapped
It includes: the material after demoulding is subjected to cutting process.
8. a kind of preparation method of anti-radiation wave absorbing material according to claim 6, which is characterized in that institute in step (2)
Stating baking condition is to toast 3-5 hours at 95-105 DEG C.
9. a kind of preparation method of anti-radiation wave absorbing material according to claim 6, which is characterized in that molten in step (3)
Solving temperature is 165-235 DEG C, injection pressure 90-120MPa.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880482A (en) * | 2021-01-26 | 2021-06-01 | 中国人民解放军陆军工程大学 | Military shelter plate and manufacturing method thereof |
| CN114561727A (en) * | 2022-02-28 | 2022-05-31 | 青铜峡市仁和纺织科技有限公司 | Radiation-proof yarn combining wave-absorbing technology and shielding technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105086472A (en) * | 2015-09-24 | 2015-11-25 | 中国工程物理研究院核物理与化学研究所 | Carbon-based porous flexible composite wave-absorbing material and preparation method thereof |
| CN107936480A (en) * | 2017-12-08 | 2018-04-20 | 梁金凤 | A kind of broadband composite wave-suction material containing thermal expansion graphene |
-
2018
- 2018-05-18 CN CN201810483252.2A patent/CN110499027A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105086472A (en) * | 2015-09-24 | 2015-11-25 | 中国工程物理研究院核物理与化学研究所 | Carbon-based porous flexible composite wave-absorbing material and preparation method thereof |
| CN107936480A (en) * | 2017-12-08 | 2018-04-20 | 梁金凤 | A kind of broadband composite wave-suction material containing thermal expansion graphene |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880482A (en) * | 2021-01-26 | 2021-06-01 | 中国人民解放军陆军工程大学 | Military shelter plate and manufacturing method thereof |
| CN112880482B (en) * | 2021-01-26 | 2023-02-21 | 中国人民解放军陆军工程大学 | Military shelter plate and manufacturing method thereof |
| CN114561727A (en) * | 2022-02-28 | 2022-05-31 | 青铜峡市仁和纺织科技有限公司 | Radiation-proof yarn combining wave-absorbing technology and shielding technology |
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