CN107841902A - One kind electromagnetic shielding extrusion coating paper and preparation method thereof - Google Patents
One kind electromagnetic shielding extrusion coating paper and preparation method thereof Download PDFInfo
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- CN107841902A CN107841902A CN201710985469.9A CN201710985469A CN107841902A CN 107841902 A CN107841902 A CN 107841902A CN 201710985469 A CN201710985469 A CN 201710985469A CN 107841902 A CN107841902 A CN 107841902A
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- D—TEXTILES; PAPER
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- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
- D21H15/10—Composite fibres
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- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
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- 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
Abstract
The present invention proposes that a kind of efficiently prepare has flexibility, electric conductivity, the electromagnetic shielding extrusion coating paper of mechanical property and preparation method concurrently, high-purity nickel powder is heated, at a temperature of maintaining vacuum environment, put into CNT, obtain the CNT of nickel coated, again by Graphene powder, the CNT of nickel coated, process control agent mixing and ball milling, obtain composite granule, finally by its with paper fiber it is compound after a kind of extrusion coating paper is made by vacuum filtration method.Technical scheme disclosed by the invention overcomes electromagnetic shielding extrusion coating paper Preparation equipment condition in the prior art and requires higher, preparation efficiency is limited, manufacturing cost is higher, electric conductivity, the technological deficiency of mechanical property deficiency of paper, it is good that the extrusion coating paper of preparation has flexibility, electric conductivity, mechanical property concurrently, and shape, resistance are controllable, paper fiber and CNT can perfectly be combined into three-dimensional network with good conductivity in extrusion coating paper, have good electromagnet shield effect.
Description
Technical field
The present invention relates to material processing field, and in particular to one kind electromagnetic shielding extrusion coating paper and preparation method thereof.
Background technology
Have swept the globe as the third time industrial revolution is at full speed, natural science obtains general advance, and electronics, electrical technology are not
It is disconnected to break through.Electronics, electrical equipment also produce electromagnetic interference when human lives are serviced（EMI）.With hyundai electronicses work
The high speed development and electronics of industry, the generally use of electric equipment products, electromagnetic interference turn into a kind of new social effects of pollution.On the one hand,
Electromagnetic radiation can influence the health of people, and can cause severe jamming to the electronic equipment of surrounding, make theirs
Working procedure gets muddled, and produces malfunction；On the other hand, electromagnetic radiation can reveal information, make the instruments such as computer without letter
Cease safety guarantee.There is data to show, in 1 kilometer of distance, the electromagnetic wave of computer display terminal can be stolen and restore letter
Breath, causes to give away secrets.Electromagnetic energy can all produce immeasurable infringement to human body, electronic equipment, so to electromagnetic wave harm
Protect extremely urgent.Interference caused by prevent electromagnetic radiation and leakage, it is main anti-to carry out shielding using electromagnetic shielding material
One of model method.
CNT（CNTs）In light weight as monodimension nanometer material, hexagonal structure connection is perfect, it is exclusive it is one-dimensional in
Empty tubular structure makes it have very big draw ratio, as absorbing material has light weight, good electrical property, to inhale wave frequency band wide etc. excellent
Point.In recent years as its wide application prospect of going deep into of CNT and nano materials research is also constantly shown.Carbon
Nanotube can as the suction ripple and electromagnetic shielding material to work well, and the superior mechanical performance of CNT become it is good
Good composite additive.
It is a kind of feature paper that shielding action is played to electromagnetic wave to be electromagnetically shielded extrusion coating paper, abroad to its research work
It is more early than what the country was carried out, it is also more deep, in the exploitation that electromagnetic shielding extrusion coating paper is particularly prepared with carbon fiber, realize very early
Batch production, in fields such as industrial production, lives has application.The most import Europe of electromagnetic shielding paper in China market and
Japan, expensive, with more in the highly sensitive equipment such as precision instrument, computer, currently, the country is being electromagnetically shielded
Mainly using carbon fiber as filler in terms of extrusion coating paper Development and Production, electromagnetic shielding extrusion coating paper is prepared using CNT as filler
Technique and product are also fewer.
The A of Chinese invention patent publication number 103266542 discloses a kind of preparation side of CNT electromagnetic wave shielding paper
Method, CNT is added in solvent, resin is added, carbon nanotube ink is made in surfactant, with carbon nanotube ink
For raw material, according to the grid line pattern for needing to design printing of shielding properties, carbon nanometer is printed using inkjet printing mode
Pipe electromagnetic wave shielding paper.Ink-jet printing process papermaking is used in the invention, requires higher to preparing ink and appointed condition, prepares effect
Rate is limited, and manufacturing cost is higher.
The B of Chinese invention patent publication number 102877367 disclose a kind of CNT/chopped fiber composite nanometer carbon paper and
Its continuous preparation method, CNT is scattered in solvent and forms dispersion liquid, is then mixed chopped fiber and is disperseed to form slurry,
Initial film is prepared into by vacuum aided casting film-forming, polymer therein is removed through subsequent treatment after and obtains target production
Thing.Although the invention can realize prepared by serialization and high efficiency, the paper of the compound preparation of CNT/chopped fiber is had certain
Flexibility, but the electric conductivity of paper, mechanical property are insufficient.
It follows that a kind of efficiently prepare is developed under the premise of production cost is controlled has flexibility, electric conductivity, mechanical property concurrently
Electromagnetic shielding extrusion coating paper technology of preparing have become promote it is carbon nano-tube filled electromagnetic shielding extrusion coating paper marketization core it is competing
Strive power.
The content of the invention
Require higher for being electromagnetically shielded extrusion coating paper Preparation equipment condition in the prior art, preparation efficiency is limited, is manufactured into
This is higher, electric conductivity, the technological deficiency of mechanical property deficiency of paper, of the invention to propose that a kind of efficiently prepare has flexibility concurrently, led
Electrically, the preparation method of the electromagnetic shielding extrusion coating paper of mechanical property, without special installation, production cost is controlled, and preparation is answered
It is good that combined paper has flexibility, electric conductivity, mechanical property concurrently, and shape, resistance are controllable, have good electromagnet shield effect.
To solve the above problems, the present invention uses following technical scheme：
One kind electromagnetic shielding extrusion coating paper, is prepared by weight by the following raw material：
CNT 40-50 parts
Raw material of papermaking fiber 30-40 parts
Graphene powder 10-20 parts
High-purity nickel powder 5-15 parts
Process control agent 1-2.5 parts
Wherein, the CNT is that the carbon of single-walled carbon nanotube, double-walled carbon nano-tube, multi-walled carbon nanotube and surface active is received
One or more of mixing in mitron, the length of the CNT is 10-100 nanometers；The high-purity nickel powder is that purity is big
In 99% nano-nickel powder, the particle diameter of nickel powder is 10-50 nanometers；The Graphene powder is single-layer graphene, bilayer graphene, more
One or more of mixing in layer graphene, graphene oxide and nitrogen-doped graphene；The process control agent is deionization
One kind in water, absolute ethyl alcohol, odium stearate and oleic acid；The raw material of papermaking fiber is string, mineral fibres, disperseed
Agent, the mixture of adhesive.
Preferably, the string, mineral fibres, dispersant, adhesive example in mass ratio are 1:1:0.5:0.1；
The string is one kind in pine cellulosic, cizu fiber, Eucalyptus Fibers, wheat straw fiber, reed fiber, sugarcane fiber
Or several mixing；
The mineral fibres is the mixing of one or both of asbestos fibre and glass fibre；
The dispersant is polyacrylamide solution, polyethylene glycol oxide, glycerine, polyvinyl alcohol, polyvinylpyrrolidone, fiber
One or more of mixing in element, lauryl sodium sulfate, neopelex, cetyl trimethylammonium bromide；
Described adhesive is one in polyvinyl alcohol, modified starch, water soluble phenol resin, Arabic gum, dithioerythritol
Kind or several mixing.
Preferably, carbon nano-tube coating surface is evaporated using high-purity nickel powder, obtains the CNT of nickel coated, then by graphite
Alkene powder, the CNT of nickel coated, process control agent mixing and ball milling, obtain composite granule, and it is compound rear logical with paper-making fibre
Vacuum filtration is crossed, obtains electrical shielding extrusion coating paper, specific preparation method is：
（1）10-5~10-2Under Pa vacuum environments, 5-15 parts by weight high-purity nickel powders are heated to 1540-1820 DEG C, maintain vacuum
The temperature of environment puts into 40-50 parts by weight of carbon nanotubes at 460-600 DEG C, turns into the nucleus of metallic nickel, and nickle atom is gathered in carbon
Nanotube surface, obtain the CNT of nickel coated；
（2）The CNT of the nickel coated, 10-20 parts by weight of graphite alkene powder and 1-2.5 parts by weight process control agents is uniform
Mixing, conductive composite granule is obtained by ball milling；
（3）The conductive composite granule is scattered in deionized water, obtains conductive composite granule suspension, with 30-40 weight
Part raw material of papermaking fiber stirs compound together, by vacuum filtration technique, obtains electrical shielding extrusion coating paper.
Preferably, in step（1）In, the rate of heat addition of the high-purity nickel powder is 80-120 DEG C/min, treats that CNT is thrown
After entering, vacuum system is closed, waits 1-2 hours, CNT polymerize sedimentation with the nickle atom in vacuum environment.
Preferably, in step（2）In, first the CNT of nickel coated is mixed with process control agent, makes carbon by stirring
Nanotube is dispersed in process control agent, then Graphene powder is added, and Graphene powder is wrapped in the carbon nanometer of nickel coated
Pipe surface.
Preferably, in step（3）In, the conductive composite granule and deionized water in mass ratio 1:3-12.5 is mixed, and is stirred
Mix uniformly, obtain conductive composite granule suspension.
Preferably, the conductive composite granule suspension mixes with paper-making fibre, and mixed proportion is 1 in mass ratio:1-
1.5。
Preferably, the suction filtration technique is to be filtered using vacuum filtration machine, and filtrate is cellulose paper, is filtered by vacuum the pressure of machine
Power is 3-70KPa, and suction filtration speed is 3-15cm3/min。
Preferably, it is 80-500 microns that extrusion coating paper product thickness is controlled during suction filtration, natural drying after the completion of suction filtration, is dried
Well-ventilated is kept during dry.
Extrusion coating paper Preparation equipment condition is electromagnetically shielded in existing scheme and requires higher, preparation efficiency is limited, and manufacturing cost is inclined
Height, electric conductivity, the mechanical property deficiency of paper.In consideration of it, the present invention proposes that a kind of efficiently prepare has flexibility, electric conductivity, power concurrently
Under vacuum conditions, high-purity nickel powder is heated by the preparation method of the electromagnetic shielding extrusion coating paper for the property learned, the present invention, maintains vacuum environment
At a temperature of, CNT is put into, CNT suspends under vacuum conditions, turns into the nucleus of nickel, nickle atom is constantly received in carbon
Assemble on mitron, obtain the CNT of nickel coated, then Graphene powder, the CNT of nickel coated, process control agent are mixed
Ball milling, obtain composite granule, finally by its with paper fiber it is compound after a kind of extrusion coating paper is made by vacuum filtration method.Present invention system
It is good that standby extrusion coating paper has flexibility, electric conductivity, mechanical property concurrently, and shape, resistance are controllable, paper fiber and carbon nanometer in extrusion coating paper
Pipe can perfectly be combined into three-dimensional network with good conductivity, have good electromagnet shield effect.
A kind of stretch release of the present invention prepares the banbury of graphene and prepares the method for graphene, with prior art phase
Than, its protrude the characteristics of and excellent effect be：
1st, the present invention proposes that a kind of efficiently prepare has flexibility, electric conductivity, the preparation method for being electromagnetically shielded extrusion coating paper of mechanical property concurrently,
By nickel plating outside CNT, the CNT of nickel coated is obtained, then by Graphene powder, the CNT of nickel coated, process control
Agent mixing and ball milling, obtain composite granule, finally by its with paper fiber it is compound after a kind of extrusion coating paper is made by vacuum filtration method.It is multiple
Paper fiber and CNT can perfectly be combined into three-dimensional network with good conductivity in combined paper, and the extrusion coating paper of preparation has concurrently soft
Property, electric conductivity, mechanical property are good, and shape, resistance are controllable, have good electromagnet shield effect.
2nd, this programme proposes a kind of preparation for being electromagnetically shielded extrusion coating paper for efficiently preparing and having flexibility, electric conductivity, mechanical property concurrently
Method, without special equipment of manufacturing paper with pulp, production cost is controlled, and possesses large-scale production condition.
3rd, the present invention prepares electromagnetic shielding extrusion coating paper technique and rich choice of products electromagnetic screen using CNT as filler
Compound paper product is covered, further promotes carbon nano-tube filled electromagnetic shielding extrusion coating paper marketing development.
Embodiment
Below by way of embodiment, the present invention is described in further detail, but this should not be interpreted as to the present invention
Scope be only limitted to following example.In the case where not departing from above method thought of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
（1）10-5Under Pa vacuum environments, 5 parts by weight purity are more than 99%, particle diameter is that 20 nanometers of high-purity nickel powder is heated to
1540 DEG C, the rate of heat addition of high-purity nickel powder is 120 DEG C/min, and the temperature for maintaining vacuum environment is 600 DEG C, input 50 parts by weight length
The single-walled carbon nanotube for 10 nanometers is spent, after CNT input, vacuum system is closed, waits 2 hours, CNT turns into
The nucleus of metallic nickel, nickle atom are gathered in carbon nano tube surface, and CNT polymerize sedimentation with the nickle atom in vacuum environment, obtained
To the CNT of nickel coated；
（2）First the CNT of nickel coated is mixed with 2.5 parts by weight of deionized water, makes CNT dispersed by stirring
Added in process control agent, then by 20 parts by weight mono-layer graphite powder, Graphene powder is wrapped in the CNT table of nickel coated
Face, conductive composite granule is obtained by ball milling；
（3）The conductive composite granule and deionized water in mass ratio 1:12.5 mixing, the conductive composite granule is scattered in
In deionized water, stir, obtain conductive composite granule suspension, mixed proportion is 1 in mass ratio by it:1 and 40 weight
Part raw material of papermaking fiber stirs together, and obtained conductive composite granule suspension mixes with paper-making fibre, the present embodiment
Middle string, mineral fibres, dispersant, adhesive example in mass ratio are 1:1:0.5:0.1, string be pine cellulosic,
The mixture of cizu fiber, mineral fibres are the mixing in asbestos fibre and glass fibre, and dispersant is polyacrylamide solution,
Adhesive is polyvinyl alcohol.Filtered using vacuum filtration machine, filtrate is cellulose paper, and the pressure for being filtered by vacuum machine is 3KPa, is taken out
Filtering velocity degree is 3cm3/ min, it is 500 microns that extrusion coating paper product thickness is controlled during suction filtration, natural drying after the completion of suction filtration, is dried
Well-ventilated is kept during dry, obtains electrical shielding extrusion coating paper.
After carrying out performance test to the electrical shielding extrusion coating paper prepared in embodiment, it is as shown in table 1 to obtain data.
Embodiment 2
（1）10-4Under Pa vacuum environments, 15 parts by weight purity are more than 99%, particle diameter is that 50 nanometers of high-purity nickel powder is heated to
1820 DEG C, the rate of heat addition of high-purity nickel powder is 80 DEG C/min, maintains the temperature of vacuum environment at 460 DEG C, input 50 parts by weight length
The double-walled carbon nano-tube for 100 nanometers, multi-walled carbon nanotube mixture are spent, after CNT input, closes vacuum system, etc.
Treat 1 hour, CNT turns into the nucleus of metallic nickel, and nickle atom is gathered in carbon nano tube surface, CNT and vacuum environment
In nickle atom polymerization sedimentation, obtain the CNT of nickel coated；
（2）First the CNT of nickel coated is mixed with 1 parts by weight absolute ethyl alcohol, is dispersed in CNT by stirring
In process control agent, then by 10 parts by weight graphene oxide powder add, Graphene powder is wrapped in the CNT table of nickel coated
Face, conductive composite granule is obtained by ball milling；
（3）The conductive composite granule and deionized water in mass ratio 1:3 mixing, by the conductive composite granule be scattered in from
In sub- water, stir, obtain conductive composite granule suspension, mixed proportion is 1 in mass ratio by it:1.5 and 30 parts by weight
Raw material of papermaking fiber stirs together, and obtained conductive composite granule suspension mixes with paper-making fibre, in the present embodiment
String, mineral fibres, dispersant, adhesive example in mass ratio are 1:1:0.5:0.1, string is wheat straw fiber, reed
The mixing of fiber, sugarcane fiber, mineral fibres are asbestos fibre, and dispersant is polyethylene glycol oxide, and adhesive is water soluble phenolic
The mixing of resin, Arabic gum.Filtered using vacuum filtration machine, filtrate is cellulose paper, and the pressure for being filtered by vacuum machine is
10KPa, suction filtration speed are 5cm3/ min, it is 80 microns that extrusion coating paper product thickness is controlled during suction filtration, natural after the completion of suction filtration
Dry, keep well-ventilated in drying course, obtain electrical shielding extrusion coating paper.
After carrying out performance test to the electrical shielding extrusion coating paper prepared in embodiment, it is as shown in table 1 to obtain data.
Embodiment 3
（1）10-2Under Pa vacuum environments, 10 parts by weight purity are more than 99%, particle diameter is that 45 nanometers of high-purity nickel powder is heated to
1600 DEG C, the rate of heat addition of high-purity nickel powder is 100 DEG C/min, maintains the temperature of vacuum environment at 500 DEG C, input 50 parts by weight length
Spend for the CNT of 20 nanometers of surface active, after CNT input, close vacuum system, wait 1.2 hours, carbon is received
Mitron turns into the nucleus of metallic nickel, and nickle atom is gathered in carbon nano tube surface, and CNT gathers with the nickle atom in vacuum environment
Sedimentation is closed, obtains the CNT of nickel coated；
（2）First the CNT of nickel coated is mixed with 1.5 parts by weight odium stearate, makes CNT dispersed by stirring
Added in process control agent, then by 15 parts by weight multi-layer graphenes, Graphene powder is wrapped in the CNT table of nickel coated
Face, conductive composite granule is obtained by ball milling；
（3）The conductive composite granule and deionized water in mass ratio 1:9.5 mixing, the conductive composite granule is scattered in
In ionized water, stir, obtain conductive composite granule suspension, mixed proportion is 1 in mass ratio by it:1.5 and 35 weight
Part raw material of papermaking fiber stirs together, and obtained conductive composite granule suspension mixes with paper-making fibre, the present embodiment
Middle string, mineral fibres, dispersant, adhesive example in mass ratio are 1:1:0.5:0.1, string be pine cellulosic,
The mixing of Eucalyptus Fibers, wheat straw fiber, sugarcane fiber；Mineral fibres is the mixing of asbestos fibre and glass fibre；Dispersant is
The mixing of lauryl sodium sulfate, neopelex；Adhesive is the mixing of polyvinyl alcohol, dithioerythritol.Adopt
Filtered with vacuum filtration machine, filtrate is cellulose paper, and the pressure for being filtered by vacuum machine is 60KPa, and suction filtration speed is 5cm3/ min, takes out
It is 150 microns that extrusion coating paper product thickness is controlled during filter, natural drying after the completion of suction filtration, keeps ventilation good in drying course
It is good, obtain electrical shielding extrusion coating paper.
After carrying out performance test to the electrical shielding extrusion coating paper prepared in embodiment, it is as shown in table 1 to obtain data.
Embodiment 4
（1）10-2Under Pa vacuum environments, 15 parts by weight purity are more than 99%, particle diameter is that 35 nanometers of high-purity nickel powder is heated to
1640 DEG C, the rate of heat addition of high-purity nickel powder is 100 DEG C/min, maintains the temperature of vacuum environment at 560 DEG C, input 50 parts by weight length
The single-walled carbon nanotube for 55 nanometers, double-walled carbon nano-tube, multi-walled carbon nanotube mixture are spent, after CNT input, is closed
Vacuum system is closed, is waited 1.8 hours, CNT turns into the nucleus of metallic nickel, and nickle atom is gathered in carbon nano tube surface, and carbon is received
Mitron polymerize sedimentation with the nickle atom in vacuum environment, obtains the CNT of nickel coated；
（2）First the CNT of nickel coated is mixed with 2 parts by weight of deionized water, is dispersed in CNT by stirring
In process control agent, then 18 parts by weight graphene oxides and nitrogen-doped graphene powder added, Graphene powder is wrapped in nickel bag
The carbon nano tube surface covered, conductive composite granule is obtained by ball milling；
（3）The conductive composite granule and deionized water in mass ratio 1:10 mixing, the conductive composite granule is scattered in
In ionized water, stir, obtain conductive composite granule suspension, mixed proportion is 1 in mass ratio by it:1.2 and 36 weight
Part raw material of papermaking fiber stirs together, and obtained conductive composite granule suspension mixes with paper-making fibre, the present embodiment
Middle string, mineral fibres, dispersant, adhesive example in mass ratio are 1:1:0.5:0.1, string is bagasse, mineral
Fiber is asbestos fibre, and dispersant is the mixing of neopelex, cetyl trimethylammonium bromide；Adhesive is to change
The mixing of property starch, Arabic gum, dithioerythritol.Filtered using vacuum filtration machine, filtrate is cellulose paper, vacuum filtration
The pressure of machine is 61KPa, and suction filtration speed is 5cm3/ min, it is 350 microns that extrusion coating paper product thickness is controlled during suction filtration, is filtered
After the completion of natural drying, keep well-ventilated in drying course, obtain electrical shielding extrusion coating paper.
After carrying out performance test to the electrical shielding extrusion coating paper prepared in embodiment, it is as shown in table 1 to obtain data.
Embodiment 5
（1）10-2Under Pa vacuum environments, 13 parts by weight purity are more than 99%, particle diameter is that 45 nanometers of high-purity nickel powder is heated to
1750 DEG C, the rate of heat addition of high-purity nickel powder is 85 DEG C/min, maintains the temperature of vacuum environment at 500 DEG C, input 45 parts by weight length
The carbon nanotube mixture of the multi-walled carbon nanotube and surface active for 30 nanometers is spent, after CNT input, closes vacuum
System, wait 1 hour, CNT turns into the nucleus of metallic nickel, and nickle atom is gathered in carbon nano tube surface, CNT with it is true
Nickle atom polymerization sedimentation in Altitude, obtains the CNT of nickel coated；
（2）First the CNT of nickel coated is mixed with 2.5 parts by weight of deionized water, makes CNT dispersed by stirring
Added in process control agent, then by 10-20 parts by weight single-layer graphene, Graphene powder is wrapped in the CNT of nickel coated
Surface, conductive composite granule is obtained by ball milling；
（3）The conductive composite granule and deionized water in mass ratio 1:9.5 mixing, the conductive composite granule is scattered in
In ionized water, stir, obtain conductive composite granule suspension, mixed proportion is 1 in mass ratio by it:1 and 36 parts by weight
Raw material of papermaking fiber stirs together, and obtained conductive composite granule suspension mixes with paper-making fibre, in the present embodiment
String, mineral fibres, dispersant, adhesive example in mass ratio are 1:1:0.5:0.1, string is pine cellulosic, kind
The mixing of bamboo fibre, Eucalyptus Fibers, wheat straw fiber, reed fiber, sugarcane fiber, mineral fibres are asbestos fibre and glass fibre
Mixing；Dispersant be polyacrylamide solution, polyethylene glycol oxide, glycerine mixing, adhesive water soluble phenol resin, Arab
The mixing of glue, dithioerythritol.Filtered using vacuum filtration machine, filtrate is cellulose paper, and the pressure for being filtered by vacuum machine is 3-
70KPa, suction filtration speed are 5cm3/ min, it is 350 microns that extrusion coating paper product thickness is controlled during suction filtration, natural after the completion of suction filtration
Dry, keep well-ventilated in drying course, obtain electrical shielding extrusion coating paper.
After carrying out performance test to the electrical shielding extrusion coating paper prepared in embodiment, it is as shown in table 1 to obtain data.
Embodiment 6
（1）10-3Under Pa vacuum environments, 12 parts by weight purity are more than 99%, particle diameter is that 35 nanometers of high-purity nickel powder is heated to
1540-1820 DEG C, the rate of heat addition of high-purity nickel powder is 110 DEG C/min, maintains the temperature of vacuum environment at 560 DEG C, puts into 48 weights
The double-carbon nanotube that part length is 75 nanometers is measured, after CNT input, vacuum system is closed, waits 1.6 hours, carbon nanometer
Pipe turns into the nucleus of metallic nickel, and nickle atom is gathered in carbon nano tube surface, and CNT polymerize with the nickle atom in vacuum environment
Sedimentation, obtains the CNT of nickel coated；
（2）First the CNT of nickel coated is mixed with 2.5 parts by weight of deionized water, makes CNT dispersed by stirring
Add, make in process control agent, then by 18 parts by weight single-layer graphenes, bilayer graphene, multi-layer graphene, graphene oxide
Graphene powder is wrapped in the carbon nano tube surface of nickel coated, and conductive composite granule is obtained by ball milling；
（3）The conductive composite granule and deionized water in mass ratio 1:9.5 mixing, the conductive composite granule is scattered in
In ionized water, stir, obtain conductive composite granule suspension, mixed proportion is 1 in mass ratio by it:1.2 and 38 weight
Part raw material of papermaking fiber stirs together, and obtained conductive composite granule suspension mixes with paper-making fibre, the present embodiment
Middle string, mineral fibres, dispersant, adhesive example in mass ratio are 1:1:0.5:0.1, string be Eucalyptus Fibers,
The mixing of wheat straw fiber, reed fiber, sugarcane fiber；Mineral fibres is glass fibre；Dispersant is cellulose, dodecyl sulphate
The mixing of sodium, neopelex；Adhesive is the mixing in Arabic gum, dithioerythritol.Using vacuum filtration
Machine filters, and filtrate is cellulose paper, and the pressure for being filtered by vacuum machine is 45KPa, and suction filtration speed is 8cm3/ min, control during suction filtration
Extrusion coating paper product thickness processed is 150 microns, natural drying after the completion of suction filtration, keeps well-ventilated in drying course, obtains electric screen
Cover extrusion coating paper.
Comparative example 1
（1）12 parts by weight purity are more than 99%, pair that the high-purity nickel powder that particle diameter is 35 nanometers is 75 nanometers with 48 parts by weight length
CNT is well mixed；
（2）First nickel, CNT are mixed with 2.5 parts by weight of deionized water, were dispersed in CNT by stirring
In program control preparation, then by 18 parts by weight single-layer graphenes, bilayer graphene, multi-layer graphene, graphene oxide add, make graphite
Alkene powder is wrapped in nickel, carbon nano tube surface, and conductive composite granule is obtained by ball milling；
（3）The conductive composite granule and deionized water in mass ratio 1:9.5 mixing, the conductive composite granule is scattered in
In ionized water, stir, obtain conductive composite granule suspension, mixed proportion is 1 in mass ratio by it:1.2 and 38 weight
Part raw material of papermaking fiber stirs together, and obtained conductive composite granule suspension mixes with paper-making fibre, the present embodiment
Middle string, mineral fibres, dispersant, adhesive example in mass ratio are 1:1:0.5:0.1, string be Eucalyptus Fibers,
The mixing of wheat straw fiber, reed fiber, sugarcane fiber；Mineral fibres is glass fibre；Dispersant is cellulose, dodecyl sulphate
The mixing of sodium, neopelex；Adhesive is the mixing in Arabic gum, dithioerythritol.Using vacuum filtration
Machine filters, and filtrate is cellulose paper, and the pressure for being filtered by vacuum machine is 45KPa, and suction filtration speed is 8cm3/ min, control during suction filtration
Extrusion coating paper product thickness processed is 150 microns, natural drying after the completion of suction filtration, keeps well-ventilated in drying course, obtains electric screen
Cover extrusion coating paper.
After carrying out performance test to the electrical shielding extrusion coating paper prepared in embodiment 1-6, comparative example 1, data are obtained such as
Shown in table 1.
Table 1
Claims (9)
1. one kind electromagnetic shielding extrusion coating paper, it is characterised in that be prepared by weight by the following raw material：
CNT 40-50 parts
Raw material of papermaking fiber 30-40 parts
Graphene powder 10-20 parts
High-purity nickel powder 5-15 parts
Process control agent 1-2.5 parts
Wherein, the CNT is that the carbon of single-walled carbon nanotube, double-walled carbon nano-tube, multi-walled carbon nanotube and surface active is received
One or more of mixing in mitron, the length of the CNT is 10-100 nanometers；The high-purity nickel powder is that purity is big
In 99% nano-nickel powder, the particle diameter of nickel powder is 10-50 nanometers；The Graphene powder is single-layer graphene, bilayer graphene, more
One or more of mixing in layer graphene, graphene oxide and nitrogen-doped graphene；The process control agent is deionization
One kind in water, absolute ethyl alcohol, odium stearate and oleic acid；The raw material of papermaking fiber is string, mineral fibres, disperseed
Agent, the mixture of adhesive；
The electromagnetic shielding extrusion coating paper is prepared by the following method：
（1）10-5~10-2Under Pa vacuum environments, 5-15 parts by weight high-purity nickel powders are heated to 1540-1820 DEG C, maintain vacuum ring
The temperature in border puts into 40-50 parts by weight of carbon nanotubes at 460-600 DEG C, turns into the nucleus of metallic nickel, and nickle atom is gathered in carbon and received
Nanotube surface, obtain the CNT of nickel coated；
（2）The CNT of the nickel coated, 10-20 parts by weight of graphite alkene powder and 1-2.5 parts by weight process control agents is uniform
Mixing, conductive composite granule is obtained by ball milling；
（3）The conductive composite granule is scattered in deionized water, obtains conductive composite granule suspension, with 30-40 weight
Part raw material of papermaking fiber stirs compound together, by vacuum filtration technique, obtains electrical shielding extrusion coating paper.
2. a kind of electromagnetic shielding extrusion coating paper as claimed in claim 1, it is characterised in that the string, mineral fibres, divide
Powder, adhesive example in mass ratio are 1:1:0.5:0.1；
The string is one kind in pine cellulosic, cizu fiber, Eucalyptus Fibers, wheat straw fiber, reed fiber, sugarcane fiber
Or several mixing；
The mineral fibres is the mixing of one or both of asbestos fibre and glass fibre；
The dispersant is polyacrylamide solution, polyethylene glycol oxide, glycerine, polyvinyl alcohol, polyvinylpyrrolidone, fiber
One or more of mixing in element, lauryl sodium sulfate, neopelex, cetyl trimethylammonium bromide；
Described adhesive is one in polyvinyl alcohol, modified starch, water soluble phenol resin, Arabic gum, dithioerythritol
Kind or several mixing.
A kind of 3. method for preparing a kind of electromagnetic shielding extrusion coating paper as described in any claims of claim 1-2, it is characterised in that
Using high-purity nickel powder evaporation carbon nano-tube coating surface, the CNT of nickel coated is obtained, then by Graphene powder, the carbon of nickel coated
Nanotube, process control agent mixing and ball milling, obtain composite granule, by its with paper-making fibre it is compound after by vacuum filtration, obtain
Electrical shielding extrusion coating paper, specific preparation method are：
（1）10-5~10-2Under Pa vacuum environments, 5-15 parts by weight high-purity nickel powders are heated to 1540-1820 DEG C, maintain vacuum ring
The temperature in border puts into 40-50 parts by weight of carbon nanotubes at 460-600 DEG C, turns into the nucleus of metallic nickel, and nickle atom is gathered in carbon and received
Nanotube surface, obtain the CNT of nickel coated；
（2）The CNT of the nickel coated, 10-20 parts by weight of graphite alkene powder and 1-2.5 parts by weight process control agents is uniform
Mixing, conductive composite granule is obtained by ball milling；
（3）The conductive composite granule is scattered in deionized water, obtains conductive composite granule suspension, with 30-40 weight
Part raw material of papermaking fiber stirs compound together, by vacuum filtration technique, obtains electrical shielding extrusion coating paper.
4. a kind of preparation method for being electromagnetically shielded extrusion coating paper according to claim 3, it is characterised in that in step（1）In, institute
The rate of heat addition for stating high-purity nickel powder is 80-120 DEG C/min, after CNT input, closes vacuum system, waits 1-2 hours,
CNT polymerize sedimentation with the nickle atom in vacuum environment.
5. a kind of preparation method for being electromagnetically shielded extrusion coating paper according to claim 3, it is characterised in that in step（2）In, first
The CNT of nickel coated is mixed with process control agent, CNT is dispersed in process control agent by stirring,
Graphene powder is added again, Graphene powder is wrapped in the carbon nano tube surface of nickel coated.
6. a kind of preparation method for being electromagnetically shielded extrusion coating paper according to claim 3, it is characterised in that in step（3）In, institute
State conductive composite granule and deionized water in mass ratio 1:3-12.5 is mixed, and is stirred, is obtained conductive composite granule suspension.
A kind of 7. preparation method for being electromagnetically shielded extrusion coating paper according to claim 3, it is characterised in that the conductive composite powder
Body suspension mixes with paper-making fibre, and mixed proportion is 1 in mass ratio:1-1.5.
8. according to claim 3 it is a kind of be electromagnetically shielded extrusion coating paper preparation method, it is characterised in that it is described suction filtration technique be
Filtered using vacuum filtration machine, filtrate is cellulose paper, and the pressure for being filtered by vacuum machine is 3-70KPa, and suction filtration speed is 3-
15cm3/min。
9. a kind of preparation method for being electromagnetically shielded extrusion coating paper according to claim 3, it is characterised in that controlled during suction filtration
Extrusion coating paper product thickness is 80-500 microns, natural drying after the completion of suction filtration, and well-ventilated is kept in drying course.
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