CN103642155B - A kind of composite conductive thin film with Graphene as conductive agent and preparation method thereof - Google Patents
A kind of composite conductive thin film with Graphene as conductive agent and preparation method thereof Download PDFInfo
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- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 123
- 239000002131 composite material Substances 0.000 title claims abstract description 83
- 239000010409 thin film Substances 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 239000006258 conductive agent Substances 0.000 title claims abstract description 18
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- 229920005992 thermoplastic resin Polymers 0.000 claims description 33
- 239000000843 powder Substances 0.000 claims description 18
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 claims description 16
- 238000009413 insulation Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 15
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 13
- -1 by weight percentage Chemical compound 0.000 claims description 12
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 8
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- 239000004793 Polystyrene Substances 0.000 claims description 6
- 239000012752 auxiliary agent Substances 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 239000000805 composite resin Substances 0.000 claims description 5
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- 229920000728 polyester Polymers 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 230000002687 intercalation Effects 0.000 claims description 2
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 150000001336 alkenes Chemical class 0.000 description 4
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- 239000002994 raw material Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
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- 239000002216 antistatic agent Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000002322 conducting polymer Substances 0.000 description 3
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- 238000002844 melting Methods 0.000 description 3
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- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
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- 229910052801 chlorine Inorganic materials 0.000 description 1
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- WPYVAWXEWQSOGY-UHFFFAOYSA-N indium antimonide Chemical compound [Sb]#[In] WPYVAWXEWQSOGY-UHFFFAOYSA-N 0.000 description 1
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- 239000011701 zinc Substances 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
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Abstract
The invention belongs to field of polymer composite material, particularly to a kind of composite conductive thin film with Graphene as conductive agent and preparation method thereof.This laminated film by polrvinyl chloride and Graphene premixing again through the mixing composite conductive thin film made of double roll mill.First stabilizer and plasticizer are joined in Corvic and stir, mixture is put into ripening in baking oven again, then Graphene it is added in said mixture and stirs, through the mixing Graphene/polrvinyl chloride composite conductive thin film that obtains of double roll mill after, two-dimensional graphene content in the composite is 0.5～4.5wt%.The present invention polymer base conductive composite material with Graphene as conductive agent, owing to having processing lightweight, easy, corrosion-resistant and resistivity the feature such as regulation can have a wide range of applications at modern electronics industry, information industry and high-technology field in a big way.The technique of the present invention is simple, and production efficiency is high, it is easy to accomplish industrial-scale production.
Description
Technical field
The invention belongs to field of polymer composite material, particularly to a kind of with novel nano Carbon Materials graphite
Alkene is thermoplastic resin polymer composite conductive thin film of conductive agent and preparation method thereof.
Background technology
Polrvinyl chloride (PVC) resin is one of resin that in current plastics industry, consumption is maximum, and polyvinyl chloride resin can be wide
General it is applied to the industries such as chemical industry, coal, electronics, computer and radio communication industry.As: at electronic applications,
Transparent special section tubular product can be made into for packaging electronic components by fundamental technology, but major part electronic component,
Especially chip, needs packaging material to have a good antistatic behaviour, and the surface resistivity of flexible PVC material
10 up to14～1017Ω/ (square resistance), therefore its highest electrical insulating property makes material in use Yi Yinmo
Wipe and gather electrostatic, sensitive electronic element, instrument and meter etc. are caused packaging because of the electrion produced
Commodity are destroyed, and cause economic loss, even set off an explosion and fire, thus also limit its in chemical plant,
The application in the field such as oil depot, colliery.It addition, compound anti-static material have light weight machine-shaping inexpensive, easy,
Processing and electric conductivity once complete and electric conductivity is easy to the advantages such as regulation, and be widely used in the energy, electronics,
The fields such as aerospace.Therefore, research and develop and produce antistatic and electric conductivity polyvinyl chloride resin based composites just becomes
One important directions of PVC material research.
Keep its excellent mechanical property (such as impact resistance while improving the electric conductivity of poly chlorine polyvinyl
Energy, toughness and percentage elongation etc.) it is the emphasis that conducing composite material is studied in recent years.Prepare conducting polymer at present
The charcoal system conductive filler used is typically white carbon black or graphite, according to pattern and the electrical conduction mechanism of these conducting particles,
Reaching preferable conductive effect, the addition of conductive agent is typically greater than 10%, adds so many conductive agent
The mechanical property of matrix polymer will necessarily be reduced, finally affect the application of conducting polymer.
At present, give macromolecular material electric conductivity or antistatic behaviour mainly includes following method: at polymeric matrix
Middle filling conductive filler, add antistatic additive, polymer surfaces apply the antistatic coating of good conductivity, conjunction
Become structural electroconductive polymer polymer, at material surface composite conductive thin film etc., wherein add antistatic
Agent is most common method.But conventional antistatic additive is due to migration, can increase over time and to material
Material surface migration, it is difficult to long-term holding sheet resistance is 108Below Ω.And in polymeric matrix, fill various nothing
Machine conductive filler most use value, most common of which is then carbon conductive filler, such as: white carbon black, graphite and
CNT etc..White carbon black is natural semi-conducting material, and electric conductivity is lasting, can significantly adjust the electricity of material
Resistance rate, but owing to it is hard material, along with the increase of loading, hot strength and the hardness of material can be made
Increase and impact strength reduction, affect its application.CNT has an excellent electric conductivity, but specific surface
Long-pending higher, it is prone to reunite due to Van der Waals force between CNT so that it is dispersibility is poor in the polymer, also
Affect its application.
Graphene, as a kind of novel charcoal material, i.e. has high-strength machine compared with the material with carbon element such as white carbon black, CNT
Tool performance has again high radius-thickness ratio, and its stable lattice structure and high carrier mobility make it show simultaneously
The electric property of excellence is shown, therefore can be issued to significantly improve conducting polymer performance at the lowest loading
Purpose.Such as: the percolation threshold of Graphene prepared by solwution method/UHMWPE composite is low to 0.070
vol.%.But, the preparation method of this composite is the most numerous and diverse, the lamella of destructible Graphene in dispersive process
Structure, affects the estimated performance of composite.
Summary of the invention
It is an object of the invention to propose a kind of composite conductive thin film with Graphene as conductive agent and preparation side thereof
Method, solves preparation method in prior art the most numerous and diverse, the lamellar structure of destructible Graphene in dispersive process,
The problems such as the estimated performance affecting composite.
The technical solution used in the present invention is:
A kind of composite conductive thin film with Graphene as conductive agent, described laminated film includes Graphene, thermoplasticity
Resin and auxiliary agent, by weight percentage, Graphene 0.5～4.5wt%, auxiliary agent 30～45wt%, remaining is heat
Plastic resin；Wherein, thermoplastic resin is: polrvinyl chloride, polystyrene, polyester, polyethylene and polypropylene
In one or more compound constitute.
Described Graphene preferred content is 2.0～3.5wt%.
In described composite conductive thin film, auxiliary agent is liquid calcium zinc stabilizer and dioctyl phthalate, by weight
Percentages, liquid calcium zinc stabilizer 2～5wt%, dioctyl phthalate 28～40wt%.
Volume resistance 5000 Ω～2.0 × 10 of described composite conductive thin film9Ω, specific insulation
2.0×105Ω cm～6.0 × 1011Ω·cm；Sheet resistance 1.0 × 104Ω～8.0 × 1010Ω, surface resistivity
5.0×105Ω/～6.0 × 1012Ω/□。
The preparation method of the described composite conductive thin film with Graphene as conductive agent, comprises the steps:
(1) by plasticizer phthalic acid dioctyl ester and liquid calcium zinc stabilizer after being pre-mixed, it is then added to
In thermoplastic resin, then by said mixture in the homogenizer high speed that rotating speed is 3000～8000rpm
Stir 5～20 minutes mix homogeneously, be finally putting in the baking oven of 60～100 DEG C ripening 0.5～2 hours；
(2) graphene powder is joined above-mentioned in the compound of ripening, and rotating speed be 3000～
Homogenizer high speed 5～20 minutes mix homogeneously of stirring of 8000rpm, obtain Graphene/thermoplastic resin multiple
Close powder, as composite conductive thin film presoma；
(3) by Graphene/thermoplastic resin composite powder double roll mill front and back roll temperature be respectively 160～
200 DEG C and 158～198 DEG C, front and back roller speed ratio under conditions of being 1:1～1:1.5 mixing 3～15 minutes, just obtain stone
Ink alkene/thermoplastic resin refers to composite conductive thin film.
The volume resistance of described composite conductive thin film reaches 103The Ω order of magnitude, specific insulation reaches 105Ω.cm
The order of magnitude；Sheet resistance reaches 104The Ω order of magnitude, surface resistivity reaches 106Ω/ order of magnitude.
Described Graphene is Graphene prepared by intercalation stripping method, graphite oxidation reducing process or additive method.
The thickness of described composite conductive thin film is 0.5mm～1.5mm.
As up-and-coming youngster's Graphene of carbon series fillings, due to the electric conductivity of its excellence, pole under room temperature
High electron mobility 2 × 105cm2v-1s-1, the highest radius-thickness ratio (approximately more than 5000) so that it is at matrix polymer
When middle addition percentage by weight is less than 3%, just can reach specific insulation and drop to 106Below the Ω cm order of magnitude, full
Foot antistatic requirement.Graphene is less due to addition, and due to the pattern of Graphene, to matrix polymer
Mechanical property, almost without infringement, even has a certain degree of potentiation.Graphene and other conductive agent phase
Than having following remarkable advantage:
(1) Graphene has excellent electric conductivity, and electron mobility is up to 2 × 105cm2v-1s-1, ratio is currently known
The maximum material indium antimonide high twice of carrier mobility about.Meanwhile, the resistance value under Graphene room temperature is only
Having 2/3rds of copper, these performance specification Graphenes are the most excellent conductive materials.
(2) Graphene has the highest radius-thickness ratio (up to more than 5000).The two-dimension plane structure of Graphene makes
It is more easy to constitute conductive network in the base than zero dimension or one-dimensional electric material, therefore can reduce significantly and lead
The usage amount of electricity agent.
(3) Graphene has the highest specific surface area, and theoretical value is up to 2600m2/g.The ratio that Graphene is the highest
Surface area, can beneficially improve the interaction of itself and matrix polymer, strengthens interface bonding energy.
(4) Graphene has the mechanical property of excellence, and preferable Graphene tensile strength is 42N/m, the most general
100 times of logical steel, Young's modulus is 1100GPa, fracture strength 125GPa.Appropriate Graphene is joined poly-
In compound, Graphene is while improving polymer conductivity, and also can have a certain upgrade work to its mechanical property
With.
Owing to Graphene has above-mentioned advantage, suitable method is used to join thermoplastic resin appropriate Graphene
In lipopolymer material and realize dispersed, will make this polymer electric conductivity be improved significantly, because of
This meets thermoplastic resin polymer composite when as the packaging material of electronic component and anti-static material
Conduction needs.
Advantages of the present invention and providing the benefit that:
1, the Graphene/thermoplastic resin polymer anti-static composite material using the present invention to prepare, has good
Electric conductivity, volume resistance is minimum can reach 103The Ω order of magnitude, specific insulation is up to 105The Ω .cm order of magnitude；
Sheet resistance is minimum can reach 104The Ω order of magnitude, surface resistivity is up to 106Ω/ order of magnitude.
2, the present invention is used to prepare the technique of Graphene/thermoplastic resin polymer composite conductive thin film simply, raw
Product efficiency is high, it is easy to accomplish industrial-scale production, and the batch application for Graphene indicates direction.
In a word, first stabilizer and plasticizer are joined in thermoplastic resin and stir by the present invention, then will be mixed
Compound puts into ripening in baking oven, is then added in said mixture by Graphene and stirs, after through double rollers
Mixing roll is mixing obtains Graphene/thermoplastic resin polymer composite conductive thin film.Two-dimensional graphene is at composite
In content be 0.5～4.5wt%, the two-dimensional graphene with big radius-thickness ratio can be the most dispersed
And mutually overlap joint forms network structure, (volume resistance drops to 10 to significantly improve the electric conductivity of composite3Ω number
Magnitude), make this laminated film meet the needs of antistatic or electromagnetic shielding.Polymer with Graphene as conductive agent
Based conductive composite material owing to having processing lightweight, easy, corrosion-resistant and resistivity can be adjusted in a big way
The features such as joint have a wide range of applications at modern electronics industry, information industry and high-technology field.
Accompanying drawing explanation
Fig. 1 is Graphene (GNS)/polrvinyl chloride (PVC) the composite material surface electricity of different Graphene content
Resistance rate change curve.
Fig. 2 is graphene dispersion scanning electron microscope diagram sheet in polyvinyl chloride composite materials.
Fig. 3 is the Graphene GNS/ polyvinylchloride composite Young's modulus change song of different Graphene content
Line.
Detailed description of the invention
Graphene of the present invention/thermoplastic resin polymer composite conductive thin film, is characterized in obtaining stone through twin-roll mixing
Ink alkene is evenly distributed and mutually overlaps, and constitutes the antistatic thermoplastic resin polymer composites of conductive network,
First liquid calcium zinc stabilizer is added in plasticizer and stir, then thermoplastic resin polymer is added thereto
Stir, then by the ripening in an oven of the material of mix homogeneously, afterwards Graphene added and stir,
Graphene/thermoplastic resin polymer composite conductive thin film is obtained through double roll mill is mixing after.Graphene/heat
The preparation method of plastic resin polymer composite conductive thin film, its feature includes procedure below:
(1) by appropriate dioctyl phthalate (DOP) and liquid calcium zinc stabilizer after being pre-mixed,
Again appropriate thermoplastic resin is joined in homogenizer and stir 5～20 minutes, be then placed in 60～100 DEG C
Baking oven in ripening 0.5～2 hours.
(2) graphene powder is joined above-mentioned in the thermoplastic resin of ripening, and in homogenizer
Stir 5～20 minutes mix homogeneously, obtain Graphene/thermoplastic resin composite powder, as composite conductive thin film
Presoma.
(3) Graphene/thermoplastic resin polymer composite powder double roll mill is blended, roll temperature front and back
It is respectively 160～200 DEG C and 158～198 DEG C of temperature, front and back roller rotating ratio are mixing under conditions of being 1:1～1:1.5
Within 3～15 minutes, just can be made into Graphene/thermoplastic resin polymer composite conductive thin film.This composite conductive thin film
Volume resistance is minimum can reach 103The Ω order of magnitude, specific insulation is up to 105The Ω .cm order of magnitude；Sheet resistance is
Low can reach 104The Ω order of magnitude, surface resistivity is up to 106Ω/ order of magnitude, such electric conductivity can meet
Thermoplastic resin polymer thin film is used for anlistatig needs.
In the present invention, the granularity of graphene powder is 10～60 μm.
In the present invention, thermoplastic resin is: in polrvinyl chloride, polystyrene, polyester, polyethylene and polypropylene
One or more be combined, the granularity of thermoplastic resin is 50～250 μm.
In the present invention, calcium zinc stabilizer is liquid calcium zinc stabilizer conventional during PVC produces, and sees " Shanghai
Work " the 02nd phase in 1989, liquid calcium zinc complex stabilizer, author: Chen Sujun.As: add happy international trade
CH400, CH401, CH402, CH417, CH418, CH420, CH425 of (Shanghai) Co., Ltd.
Deng Ca-Zn composite heat stabilizer etc..
Embodiment 1
Preparing Graphene/polrvinyl chloride (PVC) composite conductive thin film, Graphene is in composite conductive thin film material
Content is 0.5wt%.
First weigh 50g Corvic respectively in the ratio of 100:60:4,30g dioctyl phthalate increases
Mould agent and 2g liquid calcium zinc stabilizer CH400, by advanced to dioctyl phthalate and liquid calcium zinc stabilizer
After the preliminary mixing of row, the Corvic of weighing is added thereto, and (rotating speed is at homogenizer
After stirring makes its mix homogeneously in 5～20 minutes in 5000rpm), put into ripening 1 hour in the baking oven of 80 DEG C；
Then 0.412g graphene powder is added in the PVC of ripening, homogenizer (rotating speed is 5000rpm)
Graphene/PVC composite powder that middle stirring 5～20 minutes mix homogeneously are uniformly mixed；Finally by above-mentioned multiple
Close powder and join in double rollers of miniature precision two-roll mill, front and back roll temperature be respectively 170 DEG C and 168 DEG C,
(mixing process medium velocity speed can be according to reality in order to carry out mixing about 5 minutes under conditions of 1:1.1 for velocity of rotation ratio
Situation regulates), last mixing film forming takes off cooling, prepares Graphene/polychlorostyrene second that Graphene content is 0.5wt%
Alkene composite conductive thin film, its thickness is 1.0mm.
After tested, the volume resistance of this conducting film is 1.7 × 109Ω, specific insulation 5.7 × 1011Ω·cm；Surface
Resistance 7.8 × 1010Ω, surface resistivity 5.5 × 1012Ω/□。
Embodiment 2
Preparing Graphene/PVC composite conductive thin film, Graphene content in composite conductive thin film material is 2.5
wt%。
The addition of Graphene is 2.1g, and remaining proportioning raw materials and preparation method, with embodiment 1, prepare graphite
Alkene content is the Graphene/polrvinyl chloride composite conductive thin film of 2.5wt%, and its thickness is 0.5mm.
After tested, the volume resistance of this conducting film is 1.5 × 105Ω, specific insulation 7.3 × 107Ω·cm；Surface
Resistance 3.5 × 106Ω, surface resistivity 1.1 × 108Ω/□。
Embodiment 3
Preparing Graphene/PVC composite conductive thin film material, Graphene content in composite conductive thin film material is
3.5wt%。
The addition of Graphene is 2.974g, and remaining proportioning raw materials and preparation method, with embodiment 1, prepare stone
Ink alkene content is the Graphene/polrvinyl chloride composite conductive thin film of 3.5wt%, and its thickness is 1.5mm.
After tested, the volume resistance of this conducting film is 8000 Ω, specific insulation 2 × 105Ω·cm；Sheet resistance
1.09×104Ω, surface resistivity 5.7 × 105Ω/□。
As it is shown in figure 1, from the Graphene GNS/ polyvinylchloride composite material surface electricity of different Graphene content
Resistance rate change curve is it can be seen that during Graphene content 3.5wt%, surface resistivity reduces nearly 7 than pure PVC
The individual order of magnitude reaches 5.7 × 105。
As in figure 2 it is shown, can from graphene dispersion scanning electron microscope diagram sheet polyvinyl chloride composite materials
To find out, Graphene disperses the most in the composite and mutually overlap joint constitutes conductive network.
As it is shown on figure 3, from the Graphene GNS/ polyvinylchloride composite Young mould of different Graphene content
Amount change curve it can be seen that calculated the value of corresponding Young's modulus by composite load-deformation curve slope meter,
Along with the increase of Graphene content is in rising trend.
Embodiment 4
Preparing Graphene/polystyrene (PS) composite conductive thin film, Graphene contains in composite conductive thin film material
Amount is 0.5wt%.
First weigh 50g polystyrene resin respectively in the ratio of 100:60:4,30g dioctyl phthalate increases
Mould agent and 2g liquid calcium zinc stabilizer CH401, by advanced to dioctyl phthalate and liquid calcium zinc stabilizer
After the preliminary mixing of row, the polystyrene resin of weighing is added thereto, and (rotating speed is at homogenizer
After stirring makes its mix homogeneously in 10 minutes in 6000rpm), put into ripening 2 hours in the baking oven of 60 DEG C；Then
0.412g graphene powder is added in the polystyrene of ripening, homogenizer (rotating speed is 6000rpm)
Graphene/polystyrene composite powder that 10 minutes mix homogeneously of middle stirring are uniformly mixed；Finally by above-mentioned multiple
Close powder and join in double rollers of miniature precision two-roll mill, front and back roll temperature be respectively 245 DEG C and 243 DEG C,
(mixing process medium velocity speed can be according to reality in order to carry out mixing about 10 minutes under conditions of 1:1.2 for velocity of rotation ratio
Border situation regulation), last mixing film forming takes off cooling, prepares Graphene/polyphenyl that Graphene content is 0.5wt%
Ethylene composite conductive thin film, its thickness is 1.0mm.
After tested, the volume resistance of this conducting film is 1.5 × 109Ω, specific insulation 5.0 × 1011Ω·cm；Surface
Resistance 7.0 × 1010Ω, surface resistivity 5.0 × 1012Ω/□。
Embodiment 5
Preparing Graphene/polypropylene (PP) composite conductive thin film, Graphene is content in composite conductive thin film material
For 2.5wt%.
The addition of Graphene is 2.1g, and double rolling melting temperatures 170 DEG C (polypropylene fusing point), remaining raw material is joined
When preparation method is with embodiment 4, prepares Graphene/polrvinyl chloride composite conducting that Graphene content is 2.5wt%
Thin film, its thickness is 0.5mm.
After tested, the volume resistance of this conducting film is 1.0 × 105Ω, specific insulation 8.0 × 107Ω·cm；Surface
Resistance 3.0 × 106Ω, surface resistivity 1.0 × 108Ω/□。
Embodiment 6
Preparing Graphene/polyethylene terephthalate (PET) composite conductive thin film material, Graphene is multiple
Closing content in conductive film material is 3.5wt%.The addition of Graphene is 2.974g, double rolling melting temperatures 260
DEG C (melting point polyester), remaining proportioning raw materials and preparation method are with embodiment 4, and preparing Graphene content is 3.5wt%
Graphene/polrvinyl chloride composite conductive thin film, its thickness is 1.5mm.
After tested, the volume resistance of this conducting film is 10000 Ω, specific insulation 2.5 × 105Ω·cm；Surface electricity
Resistance 1.5 × 104Ω, surface resistivity 6.0 × 105Ω/□。
Comparative example 1
Prepare the PVC film without Graphene.Prepare DOP plasticizing polyvinyl chloride resin method with embodiment 1, and
Mix homogeneously, joins powder in double rollers of miniature precision two-roll mill, and front and back roll temperature is respectively 170 DEG C
With 168 DEG C, (mixing process medium velocity is fast in order to carry out mixing about 5 minutes under conditions of 1:1.1 for velocity of rotation ratio
Slowly can regulate according to practical situation), the pure PVC film of system.
After tested, the volume resistance of this thin film is 1.987 × 1011Ω, specific insulation 5.9 × 1013Ω·cm；Surface
Resistance 2.567 × 1011Ω, surface resistivity 1.6 × 1013Ω/□。
Comparative example 2
Utilizing small-sized double roll mill to prepare Graphene masterbatch, Graphene/PVC prepared by recycling Graphene masterbatch
Conductive film, Graphene content is 2.5%.Preparation method is with embodiment 1.After tested, the body of this conductive film
Long-pending resistance is 1.9 Ω × 1010, specific insulation 5.7 × 1012Ω·cm；Sheet resistance 3.0 × 1011Ω, sheet resistance
Rate 7.8 × 1013Ω/□。
Embodiment result shows, the method that Graphene of the present invention is compound with thermoplastic resin polymer, by plasticizer
With liquid calcium zinc stabilizer after being pre-mixed, add PVC mix homogeneously post curing in homogenizer,
Again Graphene is joined above-mentioned in the PVC of ripening, and stir in homogenizer, obtain graphite
Alkene/PVC composite powder, after through double roll mill mixing one-tenth Graphene/thermoplastic resin polymer composite conducting
Thin film.The specific insulation of above-mentioned composite conductive thin film and surface resistivity all reach 106Ω .cm(Ω/) with
Under, antistatic requirement can be met.The method is simple for process, is suitable for industrial-scale production.
Claims (5)
1. the preparation method of the composite conductive thin film with Graphene as conductive agent, it is characterised in that described laminated film includes Graphene, thermoplastic resin and auxiliary agent, by weight percentage, Graphene 0.5～4.5wt%, auxiliary agent 30～45wt%, remaining is thermoplastic resin；Wherein, thermoplastic resin is: one or more the compound compositions in polrvinyl chloride, polystyrene, polyester, polyethylene and polypropylene；
In described composite conductive thin film, auxiliary agent is liquid calcium zinc stabilizer and dioctyl phthalate, by weight percentage, liquid calcium zinc stabilizer 2～5wt%, dioctyl phthalate 28～40wt%；
Volume resistance 5000 Ω～2.0 × 10 of described composite conductive thin film9Ω, specific insulation 2.0 × 105Ω cm～6.0 × 1011Ω•cm；Sheet resistance 1.0 × 104Ω～8.0 × 1010Ω, surface resistivity 5.0 × 105Ω/～6.0 × 1012Ω/□；
The preparation method of the described composite conductive thin film with Graphene as conductive agent, comprises the steps:
(1) by plasticizer phthalic acid dioctyl ester and liquid calcium zinc stabilizer after being pre-mixed, it is then added in thermoplastic resin, then by said mixture at homogenizer high speed that rotating speed is 3000～8000rpm 5～20 minutes mix homogeneously of stirring, ripening 0.5～2 hours it are finally putting in the baking oven of 60～100 DEG C；
(2) graphene powder is joined above-mentioned in the compound of ripening, and at homogenizer high speed that rotating speed is 3000～8000rpm 5～20 minutes mix homogeneously of stirring, obtain Graphene/thermoplastic resin composite powder, as composite conductive thin film presoma；
(3) by Graphene/thermoplastic resin composite powder double roll mill front and back roll temperature respectively 160～200 DEG C and 158～198 DEG C, under conditions of front and back roller speed ratio is 1:1～1:1.5 mixing 3～15 minutes, just obtain Graphene/thermoplastic resin and refer to composite conductive thin film.
2. according to the preparation method of the composite conductive thin film with Graphene as conductive agent described in claim 1, it is characterised in that described Graphene content is 2.0～3.5 wt%.
3. according to the preparation method of the composite conductive thin film with Graphene as conductive agent described in claim 1, it is characterised in that the volume resistance of described composite conductive thin film reaches 103The Ω order of magnitude, specific insulation reaches 105The Ω .cm order of magnitude；Sheet resistance reaches 104The Ω order of magnitude, surface resistivity reaches 106Ω/ order of magnitude.
4. according to the preparation method of the composite conductive thin film with Graphene as conductive agent described in claim 1, it is characterised in that the Graphene that described Graphene is intercalation stripping method or prepared by graphite oxidation reducing process.
5. according to the preparation method of the composite conductive thin film with Graphene as conductive agent described in claim 1, it is characterised in that the thickness of described composite conductive thin film is 0.5mm～1.5mm.
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| CN108948578A (en) * | 2018-06-21 | 2018-12-07 | 多凌新材料科技股份有限公司 | Graphene/PVC anti-static composite material and preparation method thereof |
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| CN115584119A (en) * | 2022-11-11 | 2023-01-10 | 成都佳驰电子科技股份有限公司 | Corrosion-resistant light high-conductivity carbon-system flexible conductive shielding film and preparation method thereof |
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