CN108485074A - A kind of preparation method of heat dissipation plastic shell of television material - Google Patents
A kind of preparation method of heat dissipation plastic shell of television material Download PDFInfo
- Publication number
- CN108485074A CN108485074A CN201810432416.9A CN201810432416A CN108485074A CN 108485074 A CN108485074 A CN 108485074A CN 201810432416 A CN201810432416 A CN 201810432416A CN 108485074 A CN108485074 A CN 108485074A
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- Prior art keywords
- graphene
- plastic shell
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- heat
- television material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Abstract
The heat dissipation plastic shell of television material of the present invention gives full play to the enhancing effect and intrinsic performance of graphene, carbon-coating will not be caused destructurized, physical properties are not by irreversible damage, to have larger specific surface area, higher thermal conductivity and conductivity and excellent mechanical property so that with the material be made housing of TV set have good heat radiating function.
Description
Technical field
The present invention relates to composite material and preparation method thereof field, especially a kind of preparation of heat dissipation plastic shell of television material
Method.
Background technology
Existing plastic shell of television heat conductivility is poor, so that the heat that television set generates can not be distributed timely
It goes out, therefore, it is necessary to provide a kind of thermal conductivity of new technical solution improvement plastic shell of television, prepares a kind of with good
The housing of TV set of good heat sinking function.
Currently, the method for improving plastic shell of television heat conductivility is to fill high heat conduction filler into plastics to prepare
The preferable composite material of thermal conductivity.Wherein, Nano filling is a kind of novel heat-conducting filler risen in recent years, it has unique receive
Meter Xiao Ying, thermal coefficient is higher, and potentiality to be exploited is huge.Heat conducting nano filler mainly has zero-dimension nano particle (such as metallic nanoparticle
Sub- zinc oxide (ZnO) aluminium nitride (AlN), boron nitride (BN) etc.) 1-dimention nano fiber (such as carbon nanotube (CNTs), Nano carbon fibers
Tie up (NCFs) etc.), two-dimensional nano lamella (such as nano lamellar metal oxide graphene).Graphene has perfect two dimension brilliant
Body structure, lattice are the hexagons surrounded by six carbon atoms, and thermal coefficient at room temperature is up to 4800~5300W/m
K is that extremely have potential heat filling.Graphene has larger specific surface area, higher thermal conductivity and conductivity and excellent
Different mechanical property, is added to graphene as functional stuffing or additive in plastics, can improve the heat conductivility of plastics.
The key for preparing the graphene composite material of good heat conductivity has at 2 points：(1) grapheme material of high quality is prepared；(2)
Enough graphenes are added in polymer, and reach uniform dispersion.Currently, thering are numerous methods to prepare graphene, wherein aoxidizing
Reduction method be most possibly be applied to it is industrial, but due to oxidation-reduction method during many carbon-coating structures broken
Bad, physical properties by irreversible damage, cause the enhancing effect of graphene and intrinsic performance to be difficult to fully
It plays.In addition, prepare graphene composite material there is also how evenly dispersed problem.
Invention content
To solve the above-mentioned problems, the present invention proposes a kind of preparation method of heat dissipation plastic shell of television material so that
The plastic shell of television material that radiates is evenly dispersed, functional, to solve the problems, such as that housing of TV set heat conductivility is bad.
What the invention is realized by the following technical scheme：
The present invention proposes a kind of preparation method of heat dissipation plastic shell of television material, includes the following steps：
(1) graphene microchip is dispersed in ball-milling medium, is ultrasonically treated in being cleaned by ultrasonic instrument, will be then surpassed
Mixed liquor is added to ball milling in stirring ball-milling tank after sound cleaning, and the graphene for the graphene microchip of stratiform being worn into very thin thickness is received
Rice piece；
(2) graphene nanometer sheet, insulating heat-conductive sphere of powder shape Al are taken2O3, acetone solvent is dispersed under ultrasonic disperse effect
In, carbon fiber, graphene nanometer sheet, insulating heat-conductive sphere of powder shape Al is then added2O3Mix structure Structure Network in a solvent with fiber
Network obtains Al2O3Graphene-fiber ternary hybrid filler；
(3) Al is taken2O3Graphene-fiber ternary hybrid filler, maleic anhydride grafted polymer, plastics PP or plastics
ABS is granulated through double screw extruder, prepares graphene heat-conductivity polymer composite by injection molding forming method, as institute
State heat dissipation plastic shell of television material.
Further, in step (2), the additive amount of graphene nanometer sheet is 1-5wt%, insulating heat-conductive sphere of powder shape Al2O3's
Additive amount is 30-60wt%.
Further, insulating heat-conductive sphere of powder shape Al2O3Size is 500-3000 mesh.
Further, insulating heat-conductive sphere of powder shape Al2O3Before addition, the amino containing silane coupling agent for first passing through 1.5wt% carries out
Processing.
Further, in step (2), carbon fiber additive amount is 1-5wt%.
Further, in step (1), ball-milling medium is made of water and surfactant, and surfactant can be 12
Sodium alkyl sulfonate or emulsifier op-10.
Beneficial effects of the present invention：
The heat dissipation plastic shell of television material of the present invention gives full play to the enhancing effect and intrinsic performance of graphene, no
Carbon-coating can be caused destructurized, physical properties are not by irreversible damage, to have larger ratio table
Area, higher thermal conductivity and conductivity and excellent mechanical property so that having for housing of TV set is made with the material
Good heat radiating function.
Description of the drawings
Fig. 1 is the chemical equation schematic diagram of the heat dissipation plastic shell of television material preparation method of the present invention.
Specific implementation mode
In order to it is clearer, completely illustrate technical scheme of the present invention, the present invention is made below in conjunction with the accompanying drawings further
Explanation.
Referring to FIG. 1, the present invention proposes a kind of preparation method of heat dissipation plastic shell of television material, including following step
Suddenly：
(1) graphene microchip is dispersed in ball-milling medium, is ultrasonically treated in being cleaned by ultrasonic instrument, will be then surpassed
Mixed liquor is added to ball milling in stirring ball-milling tank after sound cleaning, and the graphene for the graphene microchip of stratiform being worn into very thin thickness is received
Rice piece；
(2) graphene nanometer sheet, insulating heat-conductive sphere of powder shape Al are taken2O3, acetone solvent is dispersed under ultrasonic disperse effect
In, carbon fiber, graphene nanometer sheet, insulating heat-conductive sphere of powder shape Al is then added2O3Mix structure Structure Network in a solvent with fiber
Network obtains Al2O3Graphene-fiber ternary hybrid filler；
(3) Al is taken2O3Graphene-fiber ternary hybrid filler, maleic anhydride grafted polymer, plastics PP or plastics
ABS is granulated through double screw extruder, prepares graphene heat-conductivity polymer composite by injection molding forming method, as institute
State heat dissipation plastic shell of television material.
In the present embodiment, the graphene nano of low cost using mechanical ball mill stripping method is prepared by scale graphite alkene
Piece, the shortcomings that overcoming oxidation-reduction method to prepare graphene, effectively avoid the problem that graphene reunites and aoxidizes and significantly improve stone
The performances such as conduction, heat conduction, the stable structure of black alkene；Hydridization filler is built using the graphene and related heat filling of high-termal conductivity
Filled high polymer (PP, ABS etc.) prepares heat-conductivity polymer composite, solves the heat dissipation problem of plastic shell of television, improves
Its precision prolongs the service life, and gives full play to the enhancing effect and intrinsic performance of graphene, will not cause carbon-coating structure quilt
It destroys, physical properties are not by irreversible damage, to larger specific surface area, higher thermal conductivity
With conductivity and excellent mechanical property.
In the present embodiment, using spherical Al2O3, graphene nanometer sheet and carbon fiber mix structure structure in a solvent
Network prepares ternary hybrid filler, solves dispersibility of the graphene in macromolecule matrix, while playing different-grain diameter and size
Spherical Al2O3, the collaboration conductive force of graphene nano lamella and fiber in polymer base material.
In the present embodiment, the spherical Al of different-grain diameter and size2O3, graphene nano lamella and fiber carry out surface
Processing, at the same with the carbonyl reaction in maleic anhydride grafted elastomeric, make matrix with filling body interface formation chemical bonds carry
High interfacial bonding strength reduces interface resistance and improves heat conductivility.
Further, in step (2), the additive amount of graphene nanometer sheet is 1-5wt%, insulating heat-conductive sphere of powder shape Al2O3
Additive amount be 30-60wt%.
Further, insulating heat-conductive sphere of powder shape Al2O3Size is 500-3000 mesh.
Further, insulating heat-conductive sphere of powder shape Al2O3Before addition, the amino containing silane coupling agent for first passing through 1.5wt% carries out
Processing.
Further, in step (2), carbon fiber additive amount is 1-5wt%.
Further, in step (1), ball-milling medium is made of water and surfactant, and surfactant can be 12
Sodium alkyl sulfonate or emulsifier op-10.
The preparation method of the heat dissipation plastic shell of television material of the present invention is carried out below in conjunction with specific embodiments
Analysis：
Implement 1
Graphene nanometer sheet is prepared using mechanical stripping method：150g crystalline flake graphites are weighed first to 500m L ball-milling mediums
In, mixture ultrasound for 24 hours after, be added to ball milling in stirring ball-milling tank, the graphite of stratiform worn into the graphite microchip of very thin thickness.
Ball-milling medium is that water and surfactant form, surfactant such as dodecyl sodium sulfate and emulsifier op-10.
Embodiment 2
It is prepared by graphene hydridization filler：By 5g graphene nanometer sheets, the 800 mesh spherical shape Al of the 50g of amido coupling processing2O3,
It is scattered in acetone solvent under ultrasonic disperse effect, 3g carbon fibers, graphene nanometer sheet, insulating heat-conductive sphere of powder shape is then added
Al2O3It mixes structure structural network in a solvent with fiber and obtains Al2O3Graphene-fiber ternary hybrid filler.
Embodiment 3
It is prepared by graphene hydridization filler：3000 mesh of 1g graphene nanometer sheets, the 60g of amido coupling processing are spherical
Al2O3, it is scattered in acetone solvent under ultrasonic disperse effect, 5g carbon fibers, graphene nanometer sheet, insulating heat-conductive powder is then added
Spherical Al2O3It mixes structure structural network in a solvent with fiber and obtains Al2O3Graphene-fiber ternary hybrid filler.
Embodiment 4
The preparation of graphene heat-conductivity polymer composite：50 kilograms of Al2O3Graphene-fiber ternary hybrid filler, 3
Kilogram maleic anhydride inoculated polypropylene, 50 kilograms of plastics PP are granulated through double screw extruder, are prepared by injection molding forming method
Graphene heat-conductivity polymer composite.
Embodiment 5
The preparation of graphene heat-conductivity polymer composite：60 kilograms of Al2O3Graphene-fiber ternary hybrid filler, 3
Kilogram maleic anhydride grafted ABS, 40 kilograms of plastics ABS are granulated through double screw extruder, and stone is prepared by injection molding forming method
Black alkene heat-conductivity polymer composite.
The performance test of material：
| Scale graphite dosage (g) | SiC dosages (g) | Thermal coefficient (W/m.k) |
| 30 | 3 | 1.43 |
| 50 | 4 | 2.053 |
| 110 | 4.5 | 4.487 |
| 150 | 5 | 4.967 |
Table 1
| BN dosages (g) | SiC dosages (g) | Thermal coefficient (W/m.k) |
| 10 | 2 | 3.45 |
| 30 | 3 | 4.29 |
| 50 | 5 | 4.98 |
Table 2
Table 3
Conclusion：Compared to oxidation-reduction method, the present invention is identical in graphene additive amount using mechanical attrition method, system
The graphene heat-conductivity polymer composite thermal coefficient higher gone out, and increase with the increase of graphene additive amount, it makes
Graphene heat-conductivity polymer composite thermal coefficient range in 1-5W/m.k, heat conductivility is good.
Certainly, the present invention can also have other numerous embodiments, be based on present embodiment, those skilled in the art
Obtained other embodiment under the premise of not making any creative work belongs to the range that the present invention is protected.
Claims (6)
1. a kind of preparation method of heat dissipation plastic shell of television material, which is characterized in that include the following steps：
(1) graphene microchip is dispersed in ball-milling medium, is ultrasonically treated in being cleaned by ultrasonic instrument, it then will be ultrasonic clear
It washes rear mixed liquor and is added to ball milling in stirring ball-milling tank, the graphene microchip of stratiform is worn into the graphene nano of very thin thickness
Piece；
(2) graphene nanometer sheet, insulating heat-conductive sphere of powder shape Al are taken2O3, it is dispersed in acetone solvent under ultrasonic disperse effect, so
After carbon fiber, graphene nanometer sheet, insulating heat-conductive sphere of powder shape Al is added2O3Structure structural network is mixed in a solvent with fiber to obtain
To Al2O3Graphene-fiber ternary hybrid filler；
(3) Al is taken2O3Graphene-fiber ternary hybrid filler, maleic anhydride grafted polymer, plastics PP or plastics ABS, warp
Double screw extruder is granulated, and prepares graphene heat-conductivity polymer composite by injection molding forming method, the as described heat dissipation
Plastic shell of television material.
2. the preparation method for the plastic shell of television material that radiates according to claim 1, which is characterized in that in step (2),
The additive amount of graphene nanometer sheet is 1-5wt%, insulating heat-conductive sphere of powder shape Al2O3Additive amount be 30-60wt%.
3. the preparation method for the plastic shell of television material that radiates according to claim 2, which is characterized in that insulating heat-conductive powder
Spherical Al2O3Size is 500-3000 mesh.
4. the preparation method for the plastic shell of television material that radiates according to claim 2, which is characterized in that insulating heat-conductive powder
Spherical Al2O3Before addition, the amino containing silane coupling agent for first passing through 1.5wt% is handled.
5. the preparation method for the plastic shell of television material that radiates according to claim 1, which is characterized in that in step (2),
Carbon fiber additive amount is 1-5wt%.
6. the preparation method for the plastic shell of television material that radiates according to claim 1, which is characterized in that in step (1),
Ball-milling medium is made of water and surfactant, and surfactant can be dodecyl sodium sulfate or emulsifier op-10.
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Cited By (2)
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| CN110408177A (en) * | 2019-08-29 | 2019-11-05 | 四川大学 | A kind of heat-conducting plastic and its preparation method and application with single layer filling-material structure |
| CN112341704A (en) * | 2020-10-26 | 2021-02-09 | 嘉兴学院 | Ti3C2Aramid short fiber reinforced polypropylene composite material and preparation method thereof |
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Application publication date: 20180904 |