CN109181054A - The preparation method of high thermal conductivity polymer composite - Google Patents

The preparation method of high thermal conductivity polymer composite Download PDF

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Publication number
CN109181054A
CN109181054A CN201810817627.4A CN201810817627A CN109181054A CN 109181054 A CN109181054 A CN 109181054A CN 201810817627 A CN201810817627 A CN 201810817627A CN 109181054 A CN109181054 A CN 109181054A
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China
Prior art keywords
thermal conductivity
preparation
high thermal
polymer composite
polymer
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CN201810817627.4A
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Chinese (zh)
Inventor
王落平
刘志远
谢庆丰
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Dongguan Jinsheng Precision Electronic Components Ltd
Guangdong Janus Intelligent Group Corp Ltd
Dongguan Huajing Powder Metallurgy Co Ltd
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Priority to CN201810817627.4A priority Critical patent/CN109181054A/en
Publication of CN109181054A publication Critical patent/CN109181054A/en
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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
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08—Materials not undergoing a change of physical state when used
    • C09K5/14—Solid materials, e.g. powdery or granular
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0812—Aluminium
    • 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
    • C08K2201/003—Additives being defined by their diameter
    • 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
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/062—HDPE

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The present invention relates to a kind of preparation method of high thermal conductivity polymer composite the following steps are included: aluminium powder ball milling slabbing aluminium powder is oxidized by (1) in air later, surface forms the pellumina of 4-6nm；(2) it is placed in after being mixed the flake aluminum after oxidation with PP polymer dry in air dry oven；(3) mixture is put into high-speed mixer and is mixed 3-5 minutes, then mixing 10-30 minutes etc. in mixer.The invention has the advantages that the thermal coefficient 0.21W/MK of pure PP polymer, by the addition of flake aluminum, thermal coefficient is increased to 7-10, and thermal coefficient improves 30 times or more, as the connecting material of mobile phone mold-in injection, substantially improves the heat dissipation effect of mobile phone.

Description

The preparation method of high thermal conductivity polymer composite
Technical field
The present invention relates to a kind of preparation methods of high thermal conductivity polymer composite.
Background technique
High molecule plastic as mobile phone center and the important connecting material of interval plate mold-in injection, get over by intensity and thermal conductivity Carry out more important, especially heating conduction, with the use of glass back cover, the heat dissipation of center side is more and more important, to connection center It requires also increasingly to increase with the thermal coefficient of the high molecule plastic of middle partition.
Heat-conducting polymer material has good thermal conductivity and excellent insulating properties, for improving high-frequency electronic component Heat dissipation, sensitivity and extension service life have more and more important role.
The thermal conductivity of existing high molecule plastic is bad with insulating properties, causes electronic component temperature high, and heat dissipation is slow, uses Service life is short.
Summary of the invention
To overcome the shortcomings of existing technologies, the present invention provides a kind of preparation method of high thermal conductivity polymer composite, this The technical solution of invention is:
A kind of preparation method of high thermal conductivity polymer composite, comprising the following steps:
(1) it by aluminium powder ball milling slabbing aluminium powder, is oxidized in air later, surface forms the pellumina of 4-6nm；
It (2) will be dry in the flake aluminum merging air dry oven after oxidation；
(3) PP polymer is put into high-speed mixer and is mixed 3-5 minutes, then mixing 10-30 minutes in mixer；
(4) it is placed in Material disintegrator and crushes uniformly, be then transferred to the loading hopper of double screw extruder, fiber-like filler is from twin-screw Extruder plus fine mouth enters, and after double screw extruder, obtains the particle feeding of injection moulding；
(5) finished product for meeting performance requirement is obtained in in-mould injection, the thermal coefficient of PP polymer is made to increase to 7- from 0.2W/MK 9.52W/MK。
Partial size in the step (1) before flake aluminum ball milling is 1 μm.
In the step (2), the mass ratio of PP polymer and flake aluminum is 7:3-9:1.
In the step (2), the temperature of drying box is 80 DEG C, drying time 4 hours.
The additional amount of fiber-like filler is the 5-30% of aluminium powder weight in the step (4).
The PP polymer includes each component of following weight percent, 70 ~ 90% high density polyethylene (HDPE), 1 ~ 10% Expanding material, 1 ~ 10% toughener, 1 ~ 5% lubricant, 0.3 ~ 5% antioxidant；Wherein, the expanding material is modified polypropene Sour rouge, toughener are acrylonitrile-butadiene-styrene copolymer, and lubricant is calcium stearate, wherein the antioxidant is polyphenol The composite antioxidant that hindered phenol antioxygen 1010 and composite antioxidant 255 are formed according to mass ratio 1:1.
The invention has the advantages that the thermal coefficient 0.21W/MK of pure PP polymer, by the addition of flake aluminum, thermally conductive system Number is increased to 7-10, and thermal coefficient improves 30 times or more, as the connecting material of mobile phone mold-in injection, substantially improves mobile phone Heat dissipation effect.
Specific embodiment
The invention will now be further described with reference to specific embodiments, the advantages and features of the present invention will be with description and It is apparent.But examples are merely exemplary for these, and it is not intended to limit the scope of the present invention in any way.Those skilled in the art Member it should be understood that without departing from the spirit and scope of the invention can details to technical solution of the present invention and form into Row modifications or substitutions, but these modifications and replacement are fallen within the protection scope of the present invention.
Embodiment 1: a kind of preparation method of high thermal conductivity polymer composite, the thermal coefficient that wherein high thermal conductivity refers to are 9.52W/MK, comprising the following steps:
(1) it by the aluminium powder ball milling slabbing aluminium powder of 1 ㎏, is oxidized in air later, surface forms the pellumina of 5nm；
(2) flake aluminum after oxidation is placed in 4 hours dry in 80 DEG C of air dry ovens；
(3) it by the PP polymeric blends of 9 ㎏, puts into high-speed mixer and mixes 5 minutes, then mixing 30 divides in mixer Clock；The PP polymer includes each component of following weight percent, 78% high density polyethylene (HDPE), 8% expanding material, 5% Toughener, 7% lubricant, 2% antioxidant；Wherein, the expanding material is modified polyacrylic acid rouge, and toughener is acrylonitrile- Butadiene-styrene copolymer, lubricant are calcium stearate, wherein the antioxidant is for polyphenol hindered phenol antioxygen 1010 and again Close the composite antioxidant that antioxidant 255 is formed according to mass ratio 1:1.
(4) it is placed in Material disintegrator and crushes uniformly, be then transferred to the loading hopper of double screw extruder, fiber-like filler is from double Screw extruder plus fine mouth enters, and after double screw extruder (extruder temperature is 160 DEG C), obtains injection moulding Particle feeding；Wherein, the additional amount of fiber-like filler is the 30% of aluminium powder weight.
(5) finished product for meeting performance requirement is obtained in in-mould injection, the insulating properties of aluminium oxide guarantees that aluminium powder is added to high score High molecular material is set to be still in non-conductive state, the thermal coefficient 7.22W/MK of PP polymer after in sub- material.
In the step (1), the partial size before flake aluminum ball milling is 1 μm.
A kind of embodiment 2: preparation method of high thermal conductivity polymer composite, comprising the following steps:
(1) it by the aluminium powder ball milling slabbing aluminium powder of 1.5 ㎏, is oxidized in air later, surface forms the pellumina of 5nm；
(2) flake aluminum after oxidation is placed in 4 hours dry in 80 DEG C of air dry ovens；
(3) the PP polymer of 8.5 ㎏ is put into high-speed mixer and is mixed 3 minutes, then mixing 20 minutes in mixer；Institute The PP polymer stated includes each component of following weight percent, 80% high density polyethylene (HDPE), 8% expanding material, 5% toughening Agent, 6.7% lubricant, 0.3% antioxidant；Wherein, the expanding material is modified polyacrylic acid rouge, and toughener is acrylonitrile- Butadiene-styrene copolymer, lubricant are calcium stearate, wherein the antioxidant is for polyphenol hindered phenol antioxygen 1010 and again Close the composite antioxidant that antioxidant 255 is formed according to mass ratio 1:1.
(4) it is placed in Material disintegrator and crushes uniformly, be then transferred to the loading hopper of double screw extruder, fiber-like filler is from double Screw extruder plus fine mouth enters, and after double screw extruder (extruder temperature is 160 DEG C), obtains injection moulding Particle feeding；The additional amount of fiber-like filler is the 15% of aluminium powder weight；
(5) finished product for meeting performance requirement is obtained in in-mould injection, the insulating properties of aluminium oxide guarantees that aluminium powder is added to macromolecule material High molecular material is set to be still in non-conductive state, the thermal coefficient 8.34W/MK of PP polymer after in material.
In the step (1), the partial size before flake aluminum ball milling is 1 μm.
A kind of embodiment 3: preparation method of high thermal conductivity polymer composite, comprising the following steps:
(1) it by the aluminium powder ball milling slabbing aluminium powder of 2 ㎏, is oxidized in air later, surface forms the pellumina of 6nm；
(2) flake aluminum after oxidation is placed in 4 hours dry in 80 DEG C of air dry ovens；
(3) the PP polymer of 8 ㎏ is put into high-speed mixer and is mixed 3 minutes, then mixing 20 minutes in mixer；It is described PP polymer include following weight percent each component, 90% high density polyethylene (HDPE), 1% expanding material, 1% toughener, 6% lubricant, 2% antioxidant；Wherein, the expanding material is modified polyacrylic acid rouge, and toughener is acrylonitrile-butadiene- Styrol copolymer, lubricant are calcium stearate, wherein the antioxidant is polyphenol hindered phenol antioxygen 1010 and compound antioxygen The composite antioxidant that agent 255 is formed according to mass ratio 1:1.
(4) it is placed in Material disintegrator and crushes uniformly, be then transferred to the loading hopper of double screw extruder, fiber-like filler is from double Screw extruder plus fine mouth enters, and after double screw extruder (extruder temperature is 160 DEG C), obtains injection moulding Particle feeding；The additional amount of fiber-like filler be aluminium powder weight 5%, the fiber-like filler be glass fibre, cutting it is natural One or more of fiber, carbon fiber, Fypro, polyester fiber, boron fibre.
(5) finished product for meeting performance requirement is obtained in in-mould injection, the insulating properties of aluminium oxide guarantees that aluminium powder is added to high score High molecular material is set to be still in non-conductive state, the thermal coefficient 9.52W/MK of PP polymer after in sub- material.
In the step (1), the partial size before flake aluminum ball milling is 1 μm.

Claims (6)

1. a kind of preparation method of high thermal conductivity polymer composite, which comprises the following steps:
(1) it by aluminium powder ball milling slabbing aluminium powder, is oxidized in air later, surface forms the pellumina of 4-6nm；
It (2) will be dry in the flake aluminum merging air dry oven after oxidation；
(3) PP polymer is put into high-speed mixer and is mixed 3-5 minutes, then mixing 10-30 minutes in mixer；
(4) it is placed in Material disintegrator and crushes uniformly, be then transferred to the loading hopper of double screw extruder, fiber-like filler is from twin-screw Extruder plus fine mouth enters, and after double screw extruder, obtains the particle feeding of injection moulding；
(5) finished product for meeting performance requirement is obtained in in-mould injection, the thermal coefficient of PP polymer is made to increase to 7- from 0.2W/MK 9.52W/MK。
2. a kind of preparation method of high thermal conductivity polymer composite according to claim 1, which is characterized in that described Partial size in step (1) before flake aluminum ball milling is 1 μm.
3. a kind of preparation method of high thermal conductivity polymer composite according to claim 1, which is characterized in that described In step (2), the mass ratio of PP polymer and flake aluminum is 7:3-9:1.
4. a kind of preparation method of high thermal conductivity polymer composite according to claim 1, which is characterized in that described In step (2), the temperature of drying box is 80 DEG C, drying time 4 hours.
5. a kind of preparation method of high thermal conductivity polymer composite according to claim 1, which is characterized in that described The additional amount of fiber-like filler is the 5-30% of aluminium powder weight in step (4).
6. a kind of preparation method of high thermal conductivity polymer composite according to claim 1, which is characterized in that described PP polymer includes each component of following weight percent, 70 ~ 90% high density polyethylene (HDPE), 1 ~ 10% expanding material, 1 ~ 10% Toughener, 1 ~ 5% lubricant, 0.3 ~ 5% antioxidant；Wherein, the expanding material is modified polyacrylic acid rouge, toughener third Alkene nitrile-butadiene-styrene copolymer, lubricant are calcium stearate, wherein the antioxidant is polyphenol hindered phenol antioxygen 1010 and the composite antioxidant that is formed according to mass ratio 1:1 of composite antioxidant 255.
CN201810817627.4A 2018-07-24 2018-07-24 The preparation method of high thermal conductivity polymer composite Pending CN109181054A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111675905A (en) * 2019-03-11 2020-09-18 迪睿合株式会社 Thermally conductive material and structure

Citations (3)

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Publication number Priority date Publication date Assignee Title
CN102174254A (en) * 2010-12-27 2011-09-07 东莞劲胜精密组件股份有限公司 Highly heat-conducting insulation engineering plastic and preparation method thereof
JP2013122003A (en) * 2011-12-09 2013-06-20 Sato Research Co Ltd Heat conductive filler and manufacturing method thereof
CN106756164A (en) * 2016-11-30 2017-05-31 中国科学院金属研究所 A kind of thermal structure function integration B4The preparation method of C/Al neutron absorber materials

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102174254A (en) * 2010-12-27 2011-09-07 东莞劲胜精密组件股份有限公司 Highly heat-conducting insulation engineering plastic and preparation method thereof
JP2013122003A (en) * 2011-12-09 2013-06-20 Sato Research Co Ltd Heat conductive filler and manufacturing method thereof
CN106756164A (en) * 2016-11-30 2017-05-31 中国科学院金属研究所 A kind of thermal structure function integration B4The preparation method of C/Al neutron absorber materials

Non-Patent Citations (2)

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王永刚 等: "《煤化工工艺学》", 30 September 2014, 中国矿业大学出版社 *
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111675905A (en) * 2019-03-11 2020-09-18 迪睿合株式会社 Thermally conductive material and structure
CN111675905B (en) * 2019-03-11 2023-11-28 迪睿合株式会社 Thermally conductive material and structure

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