CN108822551A - A kind of silica gel graphene Liquid metal composite material and preparation method thereof - Google Patents
A kind of silica gel graphene Liquid metal composite material and preparation method thereof Download PDFInfo
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- CN108822551A CN108822551A CN201810742296.2A CN201810742296A CN108822551A CN 108822551 A CN108822551 A CN 108822551A CN 201810742296 A CN201810742296 A CN 201810742296A CN 108822551 A CN108822551 A CN 108822551A
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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Abstract
The present invention relates to a kind of silica gel graphene Liquid metal composite materials and preparation method thereof, are made of the raw material of following weight parts：80-110 parts of liquid silica gel, 10-20 parts of fluorinated graphene, 50-70 parts of liquid metal, 5-10 parts of carbon nanotube, 5-8 parts of ureaformaldehyde, 30-50 parts of dehydrated alcohol, 0.5-1 parts of dispersing agent.Silica gel graphene Liquid metal composite material of the invention can effectively improve the plasticity of liquid metal, add fluorinated graphene, carbon nanotube, assign the excellent mechanical property of material, heating conduction, and the preparation process is easy, green, easy to operate.
Description
Technical field
The invention belongs to graphene composite material fields, and in particular to a kind of silica gel graphene Liquid metal composite material and
Preparation method.
Background technique
It is excellent to make it have high intensity, the good, high gloss of resistance to scraping etc. because of its own special microstructure for liquid metal
Service performance, meet the requirement of 3C electronic product structural component, have very big application potential and market development prospect.Though
Right liquid metal has many excellent properties because of the particularity of self structure；But some weakness of itself are also ten clearly demarcated
Defect --- brittleness aobvious, that liquid metal material has glass material similar, substantially reduces its plasticity, which also limits it
Practical application.
Heat conductive silica gel is uniformly filled in macromolecule matrix material using heat filling, to improve its heating conduction.It is common
High thermal conductivity filler be mainly inorganic non-metallic, metal etc..And there are many disadvantages for the filling of these traditional heat fillings, such as
High loading is needed to can be only achieved relatively high thermal conductivity, to seriously affect the subsequent performance used of silica gel, furthermore high
Loading also increase cost.Graphene is the tightly packed nano material at single layer two-dimension plane structure of carbon atom, special
Different monoatomic layer structure determine it have unique physical property, such as with good biocompatibility, superelevation it is thermally conductive
Coefficient, unique electric property, apparent quantum effect, big specific surface area, high stability and strong characterization of adsorption, often compared with
Few additive amount can form heat conduction network in silica gel matrix, be a kind of comparatively ideal heat filling.
Summary of the invention
The purpose of the present invention is to provide a kind of silica gel graphene Liquid metal composite materials and preparation method thereof.
The technical solution adopted by the present invention to solve the technical problems is：A kind of silica gel graphene liquid metal composite wood
Material, is made of the raw material of following weight parts：
80-110 parts of liquid silica gel,
10-20 parts of fluorinated graphene,
50-70 parts of liquid metal,
5-10 parts of carbon nanotube,
5-8 parts of ureaformaldehyde,
30-50 parts of dehydrated alcohol,
0.5-1 parts of dispersing agent.
Specifically, the preparation method of the fluorinated graphene is as follows：It adds graphene oxide into deionized water, at ultrasound
Reason 2-3h obtains graphene oxide water solution；Graphene oxide water solution is added in the water heating kettle with polytetrafluoroethyllining lining, so
After fluorization agent is added, 100-200 DEG C of reaction 20-25h is cooled to room temperature after reaction, filtering, filter cake is washed with deionized water
To neutrality, dry to get fluorinated graphene.
Specifically, the liquid metal is gallium, gallium-indium alloy, gallium tin alloy, gallium-indium alloy, one in gallium-indium-tin alloy
Kind.
Specifically, the dispersing agent is polyacrylate or polyvinylpyrrolidone.
The preparation method of above-mentioned silica gel graphene Liquid metal composite material, steps are as follows：
1）Liquid metal, ureaformaldehyde are added to absolute ethanol, 1-2h, supersonic frequency 53kHz, ultrasonic power 180W are ultrasonically treated,
It must disperse homogeneous liquid metal suspension liquid；
2）Fluorinated graphene, carbon nanotube are added in ball mill, 30-60min is handled, obtains mixture；
3）By step 1）In liquid metal suspension, step 2）In mixture be added liquid silica gel in, then be added dispersion
Agent, mechanical stirring 2h after stirring evenly, are added in milling apparatus and grind 10-15h, silica gel graphene Liquid metal composite material.
The invention has the advantages that：Silica gel graphene Liquid metal composite material of the invention, can effectively mention
The plasticity of high liquid metal adds fluorinated graphene, carbon nanotube, assigns the excellent mechanical property of material, heating conduction, the system
It is standby simple process, green, easy to operate.
Specific embodiment
The following is specific embodiments of the present invention, is described further to technical solution of the present invention, but of the invention
Protection scope is not limited to these examples.It is all to be included in the present invention without departing substantially from the change of present inventive concept or equivalent substitute
Protection scope within.
Embodiment 1
A kind of preparation method of silica gel graphene Liquid metal composite material is as follows：
Fluorinated graphene is prepared first：It adds graphene oxide into deionized water, it is water-soluble that ultrasonic treatment 2h obtains graphene oxide
Liquid；Graphene oxide water solution is added in the water heating kettle with polytetrafluoroethyllining lining, fluorization agent, 150 DEG C of reactions are then added
20h is cooled to room temperature after reaction, filtering, and filter cake is washed till neutrality with deionized water, is dried to get fluorinated graphene.
70 parts by weight liquid metal galliums, 5 parts by weight ureaformaldehydes are added in 35 parts by weight dehydrated alcohols, 1h is ultrasonically treated, are surpassed
Acoustic frequency 53kHz, ultrasonic power 180W must disperse homogeneous liquid metal suspension liquid.
15 parts by weight fluorinated graphenes, 7 parts by weight of carbon nanotubes are added in ball mill, 40min is handled, obtains mixture.
Liquid metal suspension, mixture are added in 110 part by weight of liquid silica gel, 0.8 parts by weight poly- third are then added
Olefin(e) acid salt, mechanical stirring 2h after stirring evenly, are added in milling apparatus and grind 12h, silica gel graphene Liquid metal composite material.
Embodiment 2
A kind of preparation method of silica gel graphene Liquid metal composite material is as follows：
Fluorinated graphene is prepared first：It adds graphene oxide into deionized water, ultrasonic treatment 2.5h obtains graphene oxide water
Solution；Graphene oxide water solution is added in the water heating kettle with polytetrafluoroethyllining lining, fluorization agent is then added, 200 DEG C anti-
22h is answered, is cooled to room temperature after reaction, is filtered, filter cake is washed till neutrality with deionized water, is dried to get fluorinated graphene.
60 parts by weight liquid metal gallium tin alloys, 6 parts by weight ureaformaldehydes are added in 50 parts by weight dehydrated alcohols, ultrasonic treatment
2h, supersonic frequency 53kHz, ultrasonic power 180W must disperse homogeneous liquid metal suspension liquid.
20 parts by weight fluorinated graphenes, 6 parts by weight of carbon nanotubes are added in ball mill, 50min is handled, obtains mixture.
Liquid metal suspension, mixture are added in 80 part by weight of liquid silica gel, 1 parts by weight of polypropylene acid is then added
Salt, mechanical stirring 2h after stirring evenly, are added in milling apparatus and grind 15h, silica gel graphene Liquid metal composite material.
Embodiment 3
A kind of preparation method of silica gel graphene Liquid metal composite material is as follows：
Fluorinated graphene is prepared first：It adds graphene oxide into deionized water, it is water-soluble that ultrasonic treatment 3h obtains graphene oxide
Liquid；Graphene oxide water solution is added in the water heating kettle with polytetrafluoroethyllining lining, fluorization agent, 100 DEG C of reactions are then added
25h is cooled to room temperature after reaction, filtering, and filter cake is washed till neutrality with deionized water, is dried to get fluorinated graphene.
50 parts by weight liquid metal gallium-indium alloys, 8 parts by weight ureaformaldehydes are added in 40 parts by weight dehydrated alcohols, ultrasonic treatment
1.5h, supersonic frequency 53kHz, ultrasonic power 180W must disperse homogeneous liquid metal suspension liquid.
18 parts by weight fluorinated graphenes, 5 parts by weight of carbon nanotubes are added in ball mill, 60min is handled, obtains mixture.
Liquid metal suspension, mixture are added in 90 part by weight of liquid silica gel, 0.5 weight account polyethylene is then added
Pyrrolidones, mechanical stirring 2h after stirring evenly, are added in milling apparatus and grind 10h, silica gel graphene liquid metal composite wood
Material.
Embodiment 4
A kind of preparation method of silica gel graphene Liquid metal composite material is as follows：
Fluorinated graphene is prepared first：It adds graphene oxide into deionized water, it is water-soluble that ultrasonic treatment 3h obtains graphene oxide
Liquid；Graphene oxide water solution is added in the water heating kettle with polytetrafluoroethyllining lining, fluorization agent, 180 DEG C of reactions are then added
23h is cooled to room temperature after reaction, filtering, and filter cake is washed till neutrality with deionized water, is dried to get fluorinated graphene.
55 parts by weight liquid metal gallium-indium-tin alloys, 7 parts by weight ureaformaldehydes are added in 30 parts by weight dehydrated alcohols, at ultrasound
1h, supersonic frequency 53kHz, ultrasonic power 180W are managed, homogeneous liquid metal suspension liquid must be dispersed.
10 parts by weight fluorinated graphenes, 10 parts by weight of carbon nanotubes are added in ball mill, 30min is handled, obtains mixture.
Liquid metal suspension, mixture are added in 100 part by weight of liquid silica gel, the poly- second of 0.7 parts by weight is then added
Alkene pyrrolidone, mechanical stirring 2h after stirring evenly, are added in milling apparatus and grind 13h, silica gel graphene liquid metal composite wood
Material.
Claims (5)
1. a kind of silica gel graphene Liquid metal composite material, which is characterized in that be made of the raw material of following weight parts：
80-110 parts of liquid silica gel,
10-20 parts of fluorinated graphene,
50-70 parts of liquid metal,
5-10 parts of carbon nanotube,
5-8 parts of ureaformaldehyde,
30-50 parts of dehydrated alcohol,
0.5-1 parts of dispersing agent.
2. silica gel graphene Liquid metal composite material as described in claim 1, which is characterized in that the fluorinated graphene
Preparation method is as follows：It adds graphene oxide into deionized water, ultrasonic treatment 2-3h obtains graphene oxide water solution；It will oxidation
Graphene aqueous solution is added in the water heating kettle with polytetrafluoroethyllining lining, and fluorization agent, 100-200 DEG C of reaction 20- is then added
25h is cooled to room temperature after reaction, filtering, and filter cake is washed till neutrality with deionized water, is dried to get fluorinated graphene.
3. silica gel graphene Liquid metal composite material as described in claim 1, which is characterized in that the liquid metal is
One of gallium, gallium-indium alloy, gallium tin alloy, gallium-indium alloy, gallium-indium-tin alloy.
4. silica gel graphene Liquid metal composite material as described in claim 1, which is characterized in that the dispersing agent is poly- third
Olefin(e) acid salt or polyvinylpyrrolidone.
5. the preparation method of the silica gel graphene Liquid metal composite material as described in claim 1-4 is any, which is characterized in that
Steps are as follows：
1) liquid metal, ureaformaldehyde are added to absolute ethanol, are ultrasonically treated 1-2h, supersonic frequency 53kHz, ultrasonic power 180W,
It must disperse homogeneous liquid metal suspension liquid；
2) fluorinated graphene, carbon nanotube are added in ball mill, handle 30-60min, obtains mixture；
3) the liquid metal suspension in step 1), the mixture in step 2) are added in liquid silica gel, dispersion is then added
Agent, mechanical stirring 2h after stirring evenly, are added in milling apparatus and grind 10-15h, silica gel graphene Liquid metal composite material.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109762281A (en) * | 2019-01-07 | 2019-05-17 | 南京航空航天大学 | A kind of ultrasound electric machine fluorinated graphene modified polytetrafluoroethylcomposite composite material and preparation method |
| CN113768496A (en) * | 2021-09-09 | 2021-12-10 | 清华大学 | Device for monitoring motion state of biological body surface or bionic body inner surface |
| CN114038606A (en) * | 2021-11-05 | 2022-02-11 | 巨晶(广东)光电科技有限公司 | Liquid metal graphene composite conductive paste for transparent display screen |
| CN115584129A (en) * | 2022-09-21 | 2023-01-10 | 深圳市欧普特工业材料有限公司 | Heat-conducting silica gel sheet and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109762281A (en) * | 2019-01-07 | 2019-05-17 | 南京航空航天大学 | A kind of ultrasound electric machine fluorinated graphene modified polytetrafluoroethylcomposite composite material and preparation method |
| CN113768496A (en) * | 2021-09-09 | 2021-12-10 | 清华大学 | Device for monitoring motion state of biological body surface or bionic body inner surface |
| CN114038606A (en) * | 2021-11-05 | 2022-02-11 | 巨晶(广东)光电科技有限公司 | Liquid metal graphene composite conductive paste for transparent display screen |
| CN115584129A (en) * | 2022-09-21 | 2023-01-10 | 深圳市欧普特工业材料有限公司 | Heat-conducting silica gel sheet and preparation method thereof |
| CN115584129B (en) * | 2022-09-21 | 2024-01-30 | 深圳市欧普特工业材料有限公司 | Heat-conducting silica gel sheet and preparation method thereof |
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