CN106906641A - Inorganic ultra tiny conductive fiber of enhancing of electromagnetic shielding level and preparation method thereof - Google Patents
Inorganic ultra tiny conductive fiber of enhancing of electromagnetic shielding level and preparation method thereof Download PDFInfo
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- 239000000835 fiber Substances 0.000 title claims abstract description 62
- 230000002708 enhancing effect Effects 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 69
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims abstract description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000010439 graphite Substances 0.000 claims abstract description 21
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 21
- 239000001294 propane Substances 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 238000003763 carbonization Methods 0.000 claims abstract description 6
- 238000006356 dehydrogenation reaction Methods 0.000 claims abstract description 6
- 239000011159 matrix material Substances 0.000 claims abstract description 6
- 239000006229 carbon black Substances 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- 239000011261 inert gas Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 6
- 238000004062 sedimentation Methods 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- 239000010456 wollastonite Substances 0.000 claims description 5
- 229910052882 wollastonite Inorganic materials 0.000 claims description 5
- 229920002748 Basalt fiber Polymers 0.000 claims description 3
- 239000004113 Sepiolite Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 229910052624 sepiolite Inorganic materials 0.000 claims description 3
- 235000019355 sepiolite Nutrition 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 7
- 230000003712 anti-aging effect Effects 0.000 abstract description 4
- 238000003486 chemical etching Methods 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000011347 resin Substances 0.000 abstract description 4
- 229920005989 resin Polymers 0.000 abstract description 4
- 239000005060 rubber Substances 0.000 abstract description 4
- 239000004566 building material Substances 0.000 abstract description 3
- 239000003317 industrial substance Substances 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 abstract description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 abstract 1
- 235000011613 Pinus brutia Nutrition 0.000 abstract 1
- 241000018646 Pinus brutia Species 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000003483 aging Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
- D06M11/74—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Inorganic Fibers (AREA)
- Paints Or Removers (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The present invention relates to inorganic ultra tiny conductive fiber of enhancing of one kind electromagnetic shielding level and preparation method thereof.From natural high-quality inorganic fibrous nonmetallic ore as matrix, super-micro-fine fibres powder is processed into, mixed with conductive black, ultra micro fine graphite powders, propane, auxiliary chemicals.By pyrolytic, dehydrogenation, cyclisation, carbonization, in fiber powder surface one layer of conducting film of firm carbonized graphiteization, as particle diameter 0.5um~50um, draw ratio 2:1~100:1st, pine compares 0.1g/cm3~1.0g/cm3, the Ω .cm~10 Ω cm of specific insulation 0.3 conductive fiber powder.With the performance that enhancing, wear-resisting, high temperature resistant, anti-aging, resistant to chemical etching, electric conductivity are constant, while have the features such as specific surface area is big, lightweight, fiber overlap joint is intensive, conductance is high, can be combined with the industrial chemicals such as any resin.It is particularly well-suited to the various invisible coatings of production military equipment, the antistatic, product that capability of electromagnetic shielding requirement is high；It is also applied for Aero-Space, high ferro automobile, electronic apparatus, plastic, rubber, chemical building material field.
Description
Technical field
The present invention relates to conductive, antistatic, electromagnetic shielding material field, more particularly to a kind of inorganic enhancing of level of electromagnetic shielding
Ultra tiny conductive fiber and preparation method thereof.
Background technology
With the development of modern high technology, the need for military equipment stealth technique, and the electromagnetism that electromagnetic wave causes is done
Disturb (EMI) and electromagnetic compatibility (EMC) problem increasingly serious, not only electronic instrument, equipment are interfered with damage, influenceing it just
The international competitiveness of often work, serious restriction China's electronic product and equipment, and pollute the environment, human health is endangered,
The safety of other electromagnetic-wave leakage also entail dangers to national information safety and military vital strategic secrets.Therefore, environmental protection, Gao Xing are explored
Conductive, the anlistatig electromagnetic shielding stealth material of energy, prevents electromagnetic interference and electromagnetic compatibility problem that electromagnetic wave causes, for carrying
The security reliability of electronic product high and equipment, lifts international competitiveness, prevents the strike of electromagnetic pulse weapon, it is ensured that information is led to
Letter system, network system, Transmission system, weapon platform etc. it is safe and smooth, particularly with R＆D and production stealth military equipment tool
There is important meaning.
The conduction of domestic conductive, the antistatic, electromagnetic shielding material for being used, and existing civilian electricity heating product at present
Material, is used mostly price chopped carbon fiber higher, or use the powder such as various metal powders, chopped fine wire and silica
Body and Organic Chemicals are composited.Because the powders such as silica are non-conductive in itself, specific surface area is small, than great, makes
During easily there is chemical reaction and corrosion and ageing in metal powder, silk and Organic Chemicals, and then cause conductance, anti-quiet
Electricity, electromagnetic shielding effect decline.
The content of the invention
To overcome above-mentioned the deficiencies in the prior art, the invention provides the inorganic ultra tiny conduction of enhancing of one kind electromagnetic shielding level
Fiber and preparation method thereof.The present invention is with the constant property of enhancing, wear-resisting, high temperature resistant, anti-aging, resistant to chemical etching, conductance
Can, while there is the features such as specific surface area is big, lightweight, fiber overlap joint is intensive, conductance is high, can be former with any resin and chemical industry
Material is compound, it is adaptable to Aero-Space, high ferro automobile, electronic apparatus, household electrical appliance, environment protection solar civil heating product, modeling
The fields such as material rubber, chemical building material, are particularly suited for the various invisible coatings of production military equipment, antistatic, electromagnetic wave shielding
Product high can be required.
In order to achieve the above object, the present invention is realized using following technical scheme：
The inorganic ultra tiny conductive fiber of enhancing of one kind electromagnetic shielding level, its component weight percent matches and is：It is natural excellent
Super-micro-fine fibres powder 65%~95%, conductive black 4%~45%, the ultra micro microlith of matter inorganic fibrous nonmetallic ore processing
Ink powder 1%~1.5%, dehydrogenating agent 0.1%~1.0%, carbon black disperser 0.5%~3%；The conductive fiber particle diameter 0.5um
~50um, draw ratio 2：1~100：1st, Bulk Specific Gravity 0.1g/cm3~1.0g/cm3, Ω cm~10 Ω of specific insulation 0.3
cm。
A kind of preparation method for being electromagnetically shielded the level ultra tiny conductive fiber of inorganic enhancing, it is characterised in that specifically include as
Lower step：
(1) superfine fibre powder is prepared, from acicular wollastonite, fibrous sepiolite, ceramic fibre, basalt fibre etc.
Natural inorganic fibrous nonmetallic ore of the high-quality fusing point more than 1500 DEG C prepares particle diameter 0.5um~50um, major diameter as matrix
Than 2:1~100:1st, the super-micro-fine fibres powder of sedimentation value 30ml~150ml；
(2) conductive black, ultra micro fine graphite powders are mixed with dehydrogenating agent, carbon black disperser heating, and adds ultra tiny fibre
Dimension powder, mixed fiber powder is loaded in the storage bin of screw(-type) feeder；
(3) mixed fiber powder is delivered in gas-solid mixer by screw(-type) feeder, and with input propane with
Inert gas is mixed with；
(4) by the graphite-pipe of mixture input high temperature furnace revolving burner, propane is with dehydrogenating agent, carbon black disperser in indifferent gas
In 200 DEG C~1400 DEG C pyrolytics, dehydrogenation, cyclisation, carbonizations under body protection, and then by conductive black, ultra micro fine graphite powders,
Even firm carbonized graphite forms one layer of conducting film on fiber powder surface；
(5) said mixture is cooled down and is purified, be finally prepared into the inorganic ultra tiny conductive fiber of enhancing of electromagnetic shielding level.
It is 65%~95%, conductive black weight that step (2) the super-micro-fine fibres powder weight presses percentage proportioning
It is 4%~45% that amount presses percentage proportioning, and it is 1%~1.5%, dehydrogenating agent weight that ultra micro fine graphite powders weight presses percentage proportioning
It is 0.5%~3% to be matched by percentage and press percentage proportioning for 0.1%~1.0%, carbon black disperser weight.The step (3)
The propane flow is measured in litres, 20 liters~500 liters of flow per minute, and inert gas flow is measured in litres, flow per minute 30
Rise~550 liters.
Compared with prior art, the beneficial effects of the invention are as follows：
The invention provides inorganic ultra tiny conductive fiber of enhancing of one kind electromagnetic shielding level and preparation method thereof.Present invention choosing
With the processing of inorganic fibrous nonmetallic ore, particle diameter 0.5um~50um, draw ratio 2：1~100：1st, sedimentation value 30ml~150ml
Super-micro-fine fibres powder is matrix；The conductive fiber particle diameter 0.5um~50um, draw ratio 2：1~100：1st, Bulk Specific Gravity 0.1g/
cm3~1.0g/cm3, the Ω cm~10 Ω cm of specific insulation 0.3.500 DEG C of high temperature are resistant to, 1400 DEG C are resistant under anaerobic state
High temperature.The present invention has the constant performance of enhancing, wear-resisting, high temperature resistant, anti-aging, resistant to chemical etching, conductance, while having ratio
The features such as surface area is big, lightweight, fiber connection is intensive, conductance is high, can be compound with any resin and industrial chemicals, it is adaptable to
Aero-Space, high ferro automobile, electronic apparatus, household electrical appliance, environment protection solar civil heating product, plastic, rubber, chemical industry are built
The fields such as material, are particularly suited for the various invisible coatings of production military equipment, the antistatic, product that capability of electromagnetic shielding requirement is high
Product.
Specific embodiment
Specific embodiment of the invention is described further below：
The inorganic ultra tiny conductive fiber of enhancing of one kind electromagnetic shielding level, its component weight percent matches and is：It is natural excellent
Super-micro-fine fibres powder 65%~95%, conductive black 4%~45%, the ultra micro microlith of matter inorganic fibrous nonmetallic ore processing
Ink powder 1%~1.5%, dehydrogenating agent weight is 0.1%~1.0% by percentage proportioning, carbon black disperser weight is matched somebody with somebody by percentage
Than being 0.5%~3%；The conductive fiber particle diameter 0.5um~50um, draw ratio 2：1~100：1st, Bulk Specific Gravity 0.1g/cm3~
1.0g/cm3, the Ω cm~10 Ω cm of specific insulation 0.3.
A kind of preparation method for being electromagnetically shielded the inorganic ultra tiny conductive fiber of enhancing of level, specifically includes following steps：
(1) superfine fibre powder is prepared, from acicular wollastonite, fibrous sepiolite, ceramic fibre, basalt fibre etc.
Natural inorganic fibrous nonmetallic ore of the high-quality fusing point more than 1500 DEG C prepares particle diameter 0.5um~50um, major diameter as matrix
Than 2:1~100:1st, the super-micro-fine fibres powder of sedimentation value 30ml~150ml；
(2) conductive black, ultra micro fine graphite powders are mixed with dehydrogenating agent, carbon black disperser heating, and adds ultra tiny fibre
Dimension powder, mixed fiber powder is loaded in the storage bin of screw(-type) feeder；The super-micro-fine fibres powder weight presses hundred
Fraction proportioning is 65%~95%, and it is 4%~45% that conductive black weight presses percentage proportioning, and ultra micro fine graphite powders weight presses hundred
Fraction proportioning is 1%~1.5%, and dehydrogenating agent weight press that percentage proportioning is 0.1%~1.0%, carbon black disperser weight is by hundred
Fraction proportioning is 0.5%~3%.
(3) mixed fiber powder is delivered in gas-solid mixer by screw(-type) feeder, and with input propane with it is lazy
Property gas is mixed with；Propane flow is measured in litres, 20 liters~500 liters of flow per minute, and inert gas flow is measured in litres, often
30 liters~550 liters of flow of minute.
Gas-solid mixer profile is oblate type, and inner circle is provided with hybrid chamber, cylindrical to be provided with multiple air admission holes.Air inlet inn with
Hybrid chamber communicates collar extension and is connected with air inlet pipe.Gas-solid mixer end face is fixedly connected with screw(-type) feeder discharging end housing, separately
End face is tightly connected with high temperature furnace rotation boiler tube feed end.Screw(-type) feeder discharge end axle is provided with agitator arm, paddle
Mixing chamber is formed in wheel insertion gas-solid mixer hybrid chamber.
(4) mixed powder, propane, the inert gas entered in mixing chamber, is input into high temperature furnace revolving burner after agitated mixing
In graphite-pipe in pipe, special-purpose high temperature stove is electrical heating, and it is adjustable that rotation boiler tube is made rotating speed by exotic material, in rotation boiler tube
Stud with high temperature resistant graphite-pipe.Rotation boiler tube feed end is tightly connected with gas-solid mixer discharging opening, and discharge end and special cooling are filled
Import is put to be tightly connected.
Propane and dehydrogenating agent, carbon black disperser under inert gas shielding 200 DEG C~1400 DEG C pyrolytics, dehydrogenation,
Cyclisation, carbonization, and then by conductive black, ultra micro fine graphite powders, uniform firm carbonized graphite is formed on fiber powder surface
One layer of conducting film；
(5) said mixture is cooled down and is purified, be finally prepared into the inorganic ultra tiny conductive fiber of enhancing of electromagnetic shielding level.
Cooling device is vertical rectangular shape, circulating water, lower end water inlet upper end water outlet.Cooling device upper end is provided with sealing
Cover plate, side is provided with charging aperture.Rotation boiler tube discharging opening insertion cooling device charging aperture is tightly connected, and charging aperture side is provided with sight
Examine window.Lower end is provided with discharging opening, is connected with purifying plant blast pipe.
Embodiment 1：
The inorganic ultra tiny conductive fiber of enhancing of one kind electromagnetic shielding level, its component weight percent matches and is：It is natural excellent
Matter inorganic fibrous nonmetallic ore processing super-micro-fine fibres powder 70%, conductive black 30%, ultra micro fine graphite powders 1.5%,
Dehydrogenating agent 0.8%, carbon black disperser 2.5%；The conductive fiber particle diameter 10um, draw ratio 2:1~10：1st, Bulk Specific Gravity 0.14g/
cm3, the Ω cm of specific insulation 1.4, be resistant to 480 DEG C of high temperature, 1390 DEG C of high temperature are resistant under anaerobic state.
A kind of preparation method for being electromagnetically shielded the inorganic ultra tiny conductive fiber of enhancing of level, specifically includes following steps：
(1) prepare superfine fibre powder, from inorganic acicular wollastonite of the natural high-quality fusing point more than 1500 DEG C as
Matrix, prepares particle diameter 10um, draw ratio 2:1~10：1 super-micro-fine fibres powder.
(2) conductive black, ultra micro fine graphite powders are mixed with dehydrogenating agent, carbon black disperser heating, and adds ultra tiny fibre
Dimension powder, mixed fiber powder is loaded in the storage bin of screw(-type) feeder；The super-micro-fine fibres powder weight presses hundred
Fraction proportioning is 70%, and it is 30% that conductive black weight presses percentage proportioning, and ultra micro fine graphite powders weight is by percentage proportioning
1.5%, it is that 0.8%, carbon black disperser weight is 2.5% by percentage proportioning that dehydrogenating agent weight presses percentage proportioning.
(3) mixed fiber powder is delivered in gas-solid mixer by screw(-type) feeder, and with input propane with it is lazy
Property gas is mixed with；The propane flow is measured in litres, 250 liters of flow per minute, and inert gas flow is measured in litres, every point
300 liters of clock flow.
(4) by the graphite-pipe of mixture input high temperature furnace revolving burner, propane is with dehydrogenating agent, carbon black disperser in indifferent gas
In 200 DEG C~1400 DEG C pyrolytics, dehydrogenation, cyclisation, carbonizations under body protection, and then by conductive black, ultra micro fine graphite powders,
Even firm carbonized graphite forms one layer of conducting film on fiber powder surface.
(5) said mixture is cooled down and is purified, be finally prepared into the inorganic ultra tiny conductive fiber of enhancing of electromagnetic shielding level.
Embodiment 2：
The inorganic ultra tiny conductive fiber of enhancing of one kind electromagnetic shielding level, its component weight percent matches and is：It is natural excellent
Matter inorganic fibrous nonmetallic ore processing super-micro-fine fibres powder 80%, conductive black 20%, ultra micro fine graphite powders 0.5%,
Dehydrogenating agent 0.3%, carbon black disperser 1.5%；The conductive fiber draw ratio 30：1st, Bulk Specific Gravity 0.2g/cm3, specific insulation
0.6 Ω cm, are resistant to 490 DEG C of high temperature, and 1400 DEG C of high temperature are resistant under anaerobic state.
A kind of preparation method for being electromagnetically shielded the inorganic ultra tiny conductive fiber of enhancing of level, specifically includes following steps：
(1) superfine fibre powder is prepared, from inorganic fibrous nonmetallic ore of the natural high-quality fusing point more than 1500 DEG C
Acicular wollastonite, the draw ratio 30 of processing:1st, the super-micro-fine fibres powder of sedimentation value 90ml.
(2) conductive black, ultra micro fine graphite powders are mixed with dehydrogenating agent, carbon black disperser heating, and adds ultra tiny fibre
Dimension powder, mixed fiber powder is loaded in the storage bin of screw(-type) feeder；The super-micro-fine fibres powder weight presses hundred
Fraction proportioning is 80%, and it is 20% that conductive black weight presses percentage proportioning, and ultra micro fine graphite powders weight is by percentage proportioning
0.5%, it is that 0.3%, carbon black disperser weight is 1.5% by percentage proportioning that dehydrogenating agent weight presses percentage proportioning.
(3) mixed fiber powder is delivered in gas-solid mixer by screw(-type) feeder, and with input propane with it is lazy
Property gas is mixed with；The propane flow is measured in litres, 350 liters of flow per minute, and inert gas flow is measured in litres, every point
390 liters of clock flow.
(4) by the graphite-pipe of mixture input high temperature furnace revolving burner, propane is with dehydrogenating agent, carbon black disperser in indifferent gas
In 200 DEG C~1400 DEG C pyrolytics, dehydrogenation, cyclisation, carbonizations under body protection, and then by conductive black, ultra micro fine graphite powders,
Even firm carbonized graphite forms one layer of conducting film on fiber powder surface.
(5) said mixture is cooled down and is purified, be finally prepared into the inorganic ultra tiny conductive fiber of enhancing of electromagnetic shielding level.
The present invention is with the constant performance of enhancing, wear-resisting, high temperature resistant, anti-aging, resistant to chemical etching, conductance, while having
There is the features such as specific surface area is big, lightweight, fiber overlap joint is intensive, conductance is high, can be compound with any resin and industrial chemicals, fit
For Aero-Space, high ferro automobile, electronic apparatus, household electrical appliance, environment protection solar civil heating product, plastic, rubber, change
The fields such as work building materials, are particularly suited for producing various invisible coatings, antistatic, electromagnetic wave shielding performance requirement height in military equipment
Product.
The above, only lifts two specific embodiment of the invention, but protection scope of the present invention is not limited thereto, and appoints
What those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its hair
Bright design is subject to equivalent or change, should all be included within the scope of the present invention.
Claims (4)
1. a kind of electromagnetic shielding level is inorganic strengthens ultra tiny conductive fiber, it is characterised in that its component weight percent is matched
For：The super-micro-fine fibres powder 65%~95% of natural high-quality inorganic fibrous nonmetallic ore processing, conductive black 4%~
45%th, ultra micro fine graphite powders 1%~1.5%, dehydrogenating agent 0.1%~1.0%, carbon black disperser 0.5%~3.0%；It is described to lead
Electric fiber diameter 0.5um~50um, draw ratio 2：1~100：1st, Bulk Specific Gravity 0.1g/cm3~1.0g/cm3, specific insulation 0.3
Ω cm~10 Ω cm.
2. a kind of preparation method for being electromagnetically shielded the level ultra tiny conductive fiber of inorganic enhancing according to claim 1, it is special
Levy and be, specifically include following steps：
(1) superfine fibre powder is prepared, it is natural from acicular wollastonite, fibrous sepiolite, ceramic fibre, basalt fibre etc.
Inorganic fibrous nonmetallic ore of the high-quality fusing point more than 1500 DEG C prepares particle diameter 0.5um~50um, draw ratio 2 as matrix:
1~100:1st, the super-micro-fine fibres powder of sedimentation value 30ml~150ml；
(2) conductive black, ultra micro fine graphite powders are mixed with dehydrogenating agent, carbon black disperser heating, and adds super-micro-fine fibres powder
Body, mixed fiber powder is loaded in the storage bin of screw(-type) feeder；
(3) mixed fiber powder is delivered in gas-solid mixer by screw(-type) feeder, and with input propane, indifferent gas
Body mixes；
(4) by the graphite-pipe of mixture input high temperature furnace revolving burner, propane is protected with dehydrogenating agent, carbon black disperser in inert gas
In 200 DEG C~1400 DEG C pyrolytics, dehydrogenation, cyclisation, carbonizations under shield, and then by conductive black, ultra micro fine graphite powders, uniform jail
Solid carbonized graphite on fiber powder surface, form one layer of conducting film；
(5) said mixture is cooled down and is purified, be finally prepared into the inorganic ultra tiny conductive fiber of enhancing of electromagnetic shielding level.
3. a kind of preparation method for being electromagnetically shielded the level ultra tiny conductive fiber of inorganic enhancing according to claim 1, it is special
Levy and be, it is 65%~95%, conductive black weight that step (2) the super-micro-fine fibres powder weight presses percentage proportioning
It is 4%~45% by percentage proportioning, it is 1%~1.5% that ultra micro fine graphite powders weight presses percentage proportioning, and dehydrogenating agent weight is pressed
Percentage proportioning is 0.1%~1.0%, carbon black disperser weight is pressed percentage and matched as 0.5%~3.0%.
4. a kind of preparation method for being electromagnetically shielded the level ultra tiny conductive fiber of inorganic enhancing according to claim 1, it is special
Levy and be, the step (3) propane flow is measured in litres, 20 liters~500 liters of flow per minute, inert gas flow is rising
Metering, 30 liters~550 liters of flow per minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710091777.7A CN106906641B (en) | 2017-02-21 | 2017-02-21 | It is electromagnetically shielded inorganic ultra tiny conductive fiber of enhancing of grade and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710091777.7A CN106906641B (en) | 2017-02-21 | 2017-02-21 | It is electromagnetically shielded inorganic ultra tiny conductive fiber of enhancing of grade and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106906641A true CN106906641A (en) | 2017-06-30 |
| CN106906641B CN106906641B (en) | 2019-04-23 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1461364A (en) * | 2000-09-21 | 2003-12-10 | 美利肯公司 | Temp. dependent electrically resistive yarn |
| CN103554530A (en) * | 2013-10-11 | 2014-02-05 | 中国航空工业集团公司北京航空材料研究院 | Electric conductive continuous fiber-reinforced fabric or prepreg and electric conductive treatment method |
| CN103966844A (en) * | 2014-05-23 | 2014-08-06 | 青岛大学 | Preparation method of graphene electroconductive composite fiber |
-
2017
- 2017-02-21 CN CN201710091777.7A patent/CN106906641B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1461364A (en) * | 2000-09-21 | 2003-12-10 | 美利肯公司 | Temp. dependent electrically resistive yarn |
| CN103554530A (en) * | 2013-10-11 | 2014-02-05 | 中国航空工业集团公司北京航空材料研究院 | Electric conductive continuous fiber-reinforced fabric or prepreg and electric conductive treatment method |
| CN103966844A (en) * | 2014-05-23 | 2014-08-06 | 青岛大学 | Preparation method of graphene electroconductive composite fiber |
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| CN106906641B (en) | 2019-04-23 |
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