CN114516936B - Anti-freezing conductive gel and preparation method and application thereof - Google Patents
Anti-freezing conductive gel and preparation method and application thereof Download PDFInfo
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- CN114516936B CN114516936B CN202011311012.8A CN202011311012A CN114516936B CN 114516936 B CN114516936 B CN 114516936B CN 202011311012 A CN202011311012 A CN 202011311012A CN 114516936 B CN114516936 B CN 114516936B
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- 238000007710 freezing Methods 0.000 title claims abstract description 12
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000001879 gelation Methods 0.000 title description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 64
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000008367 deionised water Substances 0.000 claims abstract description 36
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000002608 ionic liquid Substances 0.000 claims abstract description 30
- 229920002749 Bacterial cellulose Polymers 0.000 claims abstract description 28
- 239000005016 bacterial cellulose Substances 0.000 claims abstract description 28
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 26
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 26
- 230000002528 anti-freeze Effects 0.000 claims abstract description 25
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011259 mixed solution Substances 0.000 claims description 43
- 239000000243 solution Substances 0.000 claims description 36
- 239000000126 substance Substances 0.000 claims description 26
- -1 acrylic ester Chemical class 0.000 claims description 24
- 239000006185 dispersion Substances 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 17
- 238000004132 cross linking Methods 0.000 claims description 15
- 239000002202 Polyethylene glycol Substances 0.000 claims description 14
- 239000003431 cross linking reagent Substances 0.000 claims description 14
- 125000004386 diacrylate group Chemical group 0.000 claims description 14
- 229920001223 polyethylene glycol Polymers 0.000 claims description 14
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000012456 homogeneous solution Substances 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 239000003999 initiator Substances 0.000 claims description 9
- 239000002904 solvent Substances 0.000 claims description 9
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 claims description 8
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- IAZSXUOKBPGUMV-UHFFFAOYSA-N 1-butyl-3-methyl-1,2-dihydroimidazol-1-ium;chloride Chemical compound [Cl-].CCCC[NH+]1CN(C)C=C1 IAZSXUOKBPGUMV-UHFFFAOYSA-N 0.000 claims description 7
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 6
- IYHLUGVVUPPBEJ-UHFFFAOYSA-N 1-butyl-3-ethenyl-1,2-dihydroimidazol-1-ium;bromide Chemical compound [Br-].CCCC[NH+]1CN(C=C)C=C1 IYHLUGVVUPPBEJ-UHFFFAOYSA-N 0.000 claims description 5
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 5
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 4
- GYTJXQRCNBRFGU-UHFFFAOYSA-N 1-methyl-3-propyl-1,2-dihydroimidazol-1-ium;chloride Chemical compound Cl.CCCN1CN(C)C=C1 GYTJXQRCNBRFGU-UHFFFAOYSA-N 0.000 claims description 3
- OIWSIWZBQPTDKI-UHFFFAOYSA-N 1-butyl-3-methyl-2h-imidazole;hydrobromide Chemical compound [Br-].CCCC[NH+]1CN(C)C=C1 OIWSIWZBQPTDKI-UHFFFAOYSA-N 0.000 claims description 2
- LXKJXSIVSWFKQA-UHFFFAOYSA-N 1-methyl-3-propyl-1,2-dihydroimidazol-1-ium;bromide Chemical compound Br.CCCN1CN(C)C=C1 LXKJXSIVSWFKQA-UHFFFAOYSA-N 0.000 claims description 2
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 claims description 2
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 claims description 2
- 125000005442 diisocyanate group Chemical group 0.000 claims description 2
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 2
- 229940068041 phytic acid Drugs 0.000 claims description 2
- 235000002949 phytic acid Nutrition 0.000 claims description 2
- 239000000467 phytic acid Substances 0.000 claims description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000499 gel Substances 0.000 description 58
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 20
- 235000011187 glycerol Nutrition 0.000 description 20
- 229910017604 nitric acid Inorganic materials 0.000 description 20
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 20
- 239000002048 multi walled nanotube Substances 0.000 description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 14
- 239000000017 hydrogel Substances 0.000 description 14
- 239000002109 single walled nanotube Substances 0.000 description 10
- 230000006835 compression Effects 0.000 description 9
- 238000007906 compression Methods 0.000 description 9
- 230000004048 modification Effects 0.000 description 9
- 238000012986 modification Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
- 239000012299 nitrogen atmosphere Substances 0.000 description 7
- 238000001291 vacuum drying Methods 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 230000020477 pH reduction Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- CLOMYZFHNHFSIQ-UHFFFAOYSA-N clonixin Chemical compound CC1=C(Cl)C=CC=C1NC1=NC=CC=C1C(O)=O CLOMYZFHNHFSIQ-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 101100111636 Schizosaccharomyces pombe (strain 972 / ATCC 24843) bir1 gene Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical group 0.000 description 1
- 125000002009 alkene group Chemical group 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 150000001449 anionic compounds Chemical class 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Chemical group BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Chemical group 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 150000002605 large molecules Chemical class 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000002891 organic anions Chemical class 0.000 description 1
- 150000002892 organic cations Chemical class 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000008104 plant cellulose Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
- C08F251/02—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof on to cellulose or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
- C08J3/091—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids characterised by the chemical constitution of the organic liquid
- C08J3/095—Oxygen containing compounds
-
- 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
- C08K3/04—Carbon
- C08K3/041—Carbon nanotubes
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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
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2351/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2351/02—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to polysaccharides
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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
- C08K2201/001—Conductive additives
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Nanotechnology (AREA)
- General Chemical & Material Sciences (AREA)
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Abstract
The application discloses an anti-freezing conductive gel and a preparation method thereof, wherein the anti-freezing organic conductive gel at least comprises the following components: bacterial cellulose, acrylic esters, carbon nanotubes, ionic liquid, glycerol and deionized water; the ionic liquid is imidazole ionic liquid. The antifreeze conductive gel has good stability and mechanical property, can be suitable for operation at low temperature, and has good conductivity at low temperature.
Description
Technical Field
The application relates to an anti-freezing conductive gel and a preparation method thereof, belonging to the field of organic gel preparation.
Background
In recent years, flexible electronic materials have great application prospects in the fields of flexible energy storage, flexible sensing, wearable devices and the like. Conductive hydrogels find wide application in the flexible electronics field due to their excellent electrical conductivity, good mechanical properties.
However, under some extreme conditions, such as low temperature conditions, the conductive hydrogel inevitably loses conductivity due to freezing, and mechanical properties are greatly reduced, which severely limits the application of the conductive hydrogel under the extreme conditions. It is therefore important to prepare an antifreeze conductive gel having excellent conductivity and mechanical properties under extreme conditions.
Disclosure of Invention
The invention provides an anti-freezing conductive gel, a preparation method and application thereof, and solves the problem that the conventional conductive gel cannot maintain the conductive performance and mechanical performance under extreme conditions.
According to one aspect of the present application, there is provided a freeze-resistant conductive gel, the composition of which comprises at least: bacterial cellulose, acrylic ester substances, carbon nano tubes, ionic liquid, a cross-linking agent, glycerol and deionized water;
the ionic liquid is imidazole ionic liquid.
Optionally, the mass ratio of the bacterial cellulose to the acrylic ester substances is 10:0.1-1;
the mass ratio of the acrylic ester substances to the deionized water is 0.01-1:1;
the mass ratio of the carbon nano tube to the deionized water is 1:20-100;
the mass ratio of the ionic liquid to the deionized water is 1-20:1;
the mass ratio of the glycerol to the deionized water is 0.1-10:1.
Specifically, the lower mass ratio limit of the bacterial cellulose to the acrylic substance can be independently selected from 10:0.1, 10:0.2, 10:0.325, 10:0.4 and 10:0.5; the upper limit of the mass ratio of the acrylic ester substance to the acrylic ester substance can be independently selected from 10:0.6, 10:0.7, 10:0.8, 10:0.9 and 10:1.
Specifically, the lower limit of the mass ratio of the acrylic ester substances to the deionized water can be independently selected from 0.01:1, 0.05:1, 0.1:1, 0.2:1 and 0.4:1; the upper limit of the mass ratio of the acrylic ester substances to the deionized water can be independently selected from 0.5:1, 0.6:1, 0.7:1, 0.9:1 and 1:1.
Specifically, the lower mass ratio of carbon nanotubes to deionized water may be independently selected from 1:20, 1:25, 1:30, 1:40, 1:50; the upper mass ratio of the carbon nanotubes to deionized water can be independently selected from 1:60, 1:70, 1:80, 1:90, 1:100.
Specifically, the lower mass ratio of ionic liquid to deionized water can be independently selected from 1:1, 2:1, 4:1, 5:1, 6:1; the upper mass ratio of ionic liquid to deionized water can be independently selected from 8:1, 10:1, 15:1, 18:1, 20:1.
Specifically, the lower mass ratio of glycerin to deionized water can be independently selected from 0.1:1, 0.5:1, 1:1, 4:1, 5:1; the upper mass ratio of glycerin to deionized water can be independently selected from 6:1, 7:1, 8:1, 9:1, 10:1.
Optionally, the acrylic ester substance is at least one selected from hydroxyethyl methacrylate, acrylic ester and vinyl acetate;
optionally, the imidazole ionic liquid has a structural formula shown in a formula I:
wherein R is 1 Any one selected from alkane groups; r is R 2 Selected from the group consisting of alkyl or alkene groups; preferably, the alkyl group has less than 5 carbon atoms; the alkylene is vinyl; further preferably, the alkanyl is selected from propyl or butyl;
x is selected from any one of halogens, preferably X is chlorine or bromine.
Optionally, the imidazole ionic liquid is selected from at least one of 1-butyl-3-methylimidazole bromide, 1-butyl-3-methylimidazole chloride, 1-propyl-3-methylimidazole bromide, 1-propyl-3-methylimidazole chloride, 1-vinyl-3-butylimidazole bromide and 1-propyl-3-methylimidazole chloride;
optionally, the carbon nanotubes are modified carbon nanotubes.
The application is not particularly limited to the carbon nanotubes used, and one skilled in the art can select single-walled carbon nanotubes or multi-walled carbon nanotubes as needed; meanwhile, the modification mode of the carbon nanotubes is not particularly limited, so long as the dispersibility of the carbon nanotubes can be improved, a person skilled in the art can select the modification mode of the carbon nanotubes according to needs, and acidification modification is adopted in the specific implementation process of the application.
Optionally, the components of the antifreeze organic conductive gel also comprise a cross-linking agent;
the cross-linking agent is at least one of polyethylene glycol diacrylate, N' -methylene bisacrylamide, phytic acid and diisocyanate;
the dosage of the cross-linking agent is 0.5-10% of the mass of the acrylic ester substance.
Preferably, the cross-linking agent is polyethylene glycol diacrylate, and the polymerization degree of the polyethylene glycol diacrylate is 200-1000.
Specifically, the lower polymerization degree limit of the polyethylene glycol diacrylate may be independently selected from 200, 300, 400, 500, 600; the upper polymerization degree limit of the polyethylene glycol diacrylate can be independently selected from 700, 800, 900, 950 and 1000.
Specifically, the lower limit of the amount of the cross-linking agent can be independently selected from 0.5%, 1%, 2%, 4% and 5% of the mass of the acrylic ester substance; the upper limit of the amount of the cross-linking agent can be independently selected from 6%, 7%, 8%, 9% and 10% of the mass of the acrylic ester substance.
According to still another aspect of the present application, the method for preparing the antifreeze conductive gel at least includes:
crosslinking a solution I containing acrylic ester substances, carbon nano tubes and bacterial cellulose to obtain pre-gel;
the pre-gel is subjected to solvent replacement in glycerol to obtain an anti-freezing conductive gel;
wherein the solution I comprises imidazole ionic liquid and water.
Optionally, the conditions of the crosslinking reaction include:
adding a cross-linking agent and an initiator into the solution I to carry out a cross-linking reaction to obtain an anti-freezing conductive gel;
the temperature of the crosslinking reaction is 50-120 ℃ and the reaction time is 0.5-12 h.
Specifically, the lower limit of the crosslinking temperature may be independently selected from 50 ℃, 55 ℃, 60 ℃, 65 ℃, 70 ℃; the upper limit of the crosslinking reaction temperature may be independently selected from 90 ℃, 95 ℃,100 ℃, 110 ℃ and 120 ℃.
Specifically, the lower limit of the crosslinking reaction time may be independently selected from 0.5h, 2h, 4h, 5h, 6h; the upper limit of the crosslinking reaction time may be independently selected from 8h, 9h, 10h, 11h, 12h.
Optionally, the initiator is at least one of ammonium persulfate, potassium persulfate and azodiisobutyronitrile;
the amount of the initiator is 1-15% of the mass of the acrylic ester substance.
Specifically, the lower limit of the use amount of the initiator can be independently selected from 1%, 1.5%, 2%, 4% and 5% of the mass of the acrylate substance; the upper limit of the use amount of the initiator can be independently selected from 8%, 10%, 12%, 14% and 15% of the mass of the acrylic ester substance.
Alternatively, the conditions for solvent displacement include:
the time of the solvent replacement treatment is 5-120 min.
Specifically, the lower limit of the solvent replacement treatment time can be independently selected from 5min, 10min, 30min, 40min, and 50min; the upper limit of the solvent replacement treatment time can be independently selected from 60min, 70min, 80min, 90min, and 100min.
Optionally, the solution I is obtained by:
adding acrylic ester substances and carbon nano tubes into a homogeneous solution containing ionic liquid, and mixing to obtain a mixed solution A;
and adding the mixed solution A into a dispersion liquid containing bacterial cellulose, and mixing to obtain a solution I.
Alternatively, the bacterial cellulose content is 0.1wt% to 2.0wt% in the dispersion containing bacterial cellulose.
Optionally, the mixing temperature of the obtained mixed solution A is 60-100 ℃;
the mixing temperature of the obtained solution I is 80-120 ℃.
Specifically, the lower limit of the mixing temperature of the obtained mixed solution A can be independently selected from 60 ℃, 65 ℃, 70 ℃, 75 ℃ and 80 ℃; the upper limit of the mixing temperature can be independently selected from 80 ℃, 85 ℃, 90 ℃, 95 ℃ and 100 ℃.
Specifically, the lower limit of the mixing temperature for obtaining solution I can be independently selected from 80 ℃, 85 ℃, 90 ℃, 95 ℃,100 ℃; the upper limit of the mixing temperature can be independently selected from 100 ℃, 105 ℃, 110 ℃, 115 ℃ and 120 ℃.
According to one embodiment of the application, the preparation method of the antifreeze conductive gel comprises the following steps:
s001, modifying the carbon nano tube to obtain a modified carbon nano tube;
s002, adding hydroxyethyl methacrylate and modified carbon nano tubes into a homogeneous solution containing ionic liquid, and mixing to obtain a mixed solution A;
the homogeneous solution containing the ionic liquid is a homogeneous solution of the ionic liquid and deionized water;
s003, adding the mixed solution A into a dispersion liquid containing bacterial cellulose, and mixing to obtain a mixed solution B;
s004, carrying out cross-linking reaction on the mixed solution B to obtain the anti-freezing conductive gel;
s005, performing post-treatment on the pregel to obtain the antifreeze conductive gel.
Optionally, step S001 includes at least:
acidifying and modifying the carbon nano tube to obtain a modified carbon nano tube;
preferably, in the acidification modification, the modifier is a mixed solution of concentrated sulfuric acid and concentrated nitric acid;
the acidification modification temperature is 120-180 ℃, and the modification time is 1-10 h.
The concentrated sulfuric acid and the concentrated nitric acid adopted in the method are all commercial reagents, the concentration of the concentrated sulfuric acid is 70-98 wt%, and the concentration of the concentrated nitric acid is 65-70 wt%.
Specifically, the lower limit of the acidification modification temperature can be independently selected from 120 ℃, 125 ℃, 130 ℃, 135 ℃, 140 ℃; the upper limit of the acidification modification temperature can be independently selected from 145 ℃, 150 ℃, 160 ℃, 170 ℃ and 180 ℃.
Optionally, in the mixed solution, the volume ratio of the concentrated sulfuric acid to the concentrated nitric acid is 1-10:1;
the mass volume ratio of the carbon nano tube to the mixed solution is 0.5-1.5 mg/mL.
Specifically, the lower limit of the volume ratio of concentrated sulfuric acid to concentrated nitric acid may be independently selected from 1:1, 2:1, 3:1, 4:1, 5:1; the upper limit of the volume ratio of concentrated sulfuric acid to concentrated nitric acid may be independently selected from 6:1, 7:1, 8:1, 9:1, 10:1.
Optionally, step S004 includes:
and under the atmosphere of protective gas, adding a cross-linking agent and an initiator into the mixed solution B to carry out a cross-linking reaction, thereby obtaining the anti-freezing conductive gel.
The shielding gas used is an inert gas, preferably nitrogen.
According to a further aspect of the application, there is provided the use of the above-described antifreeze conductive gel or the antifreeze conductive gel prepared by the above method in flexible electronic devices.
The beneficial effects that this application can produce include:
1) According to the antifreeze conductive gel provided by the application, bacterial cellulose is introduced, so that the strong hydrogen bond action among a large number of hydroxyl groups in the bacterial cellulose is utilized, and the stability of the gel is provided;
2) According to the antifreeze conductive gel provided by the application, by introducing the modified carbon nano tube, the gel conductivity can be improved, and the modified carbon nano tube can be used as a functional crosslinking agent, so that the whole gel network is more compact and stable;
3) The antifreeze conductive gel provided by the application not only enhances the stability of the conductive gel, but also endows the gel with antifreeze property by utilizing an ionic liquid/glycerol/water three-solvent system, so that the gel has operability at low temperature.
Drawings
FIG. 1 is a tensile stress-strain plot of the freeze resistant conductive gels prepared in examples 1-4 of the present application;
FIG. 2 is a graph of compressive stress-strain curve of the freeze resistant conductive gel prepared in examples 1-4 of the present application;
FIG. 3 is a graph showing the change in resistance at low temperature under 30% strain of the antifreeze conductive gel prepared in example 4 of the application.
Detailed Description
The present application is described in detail below with reference to examples, but the present application is not limited to these examples.
Unless otherwise specified, the experimental methods used in the examples of the present application are all conventional methods; unless otherwise indicated, all starting materials in the examples of the present application were purchased commercially.
The bacterial cellulose dispersion liquid adopted in the embodiment of the application has a manufacturer of Gui Linji macro-tech company, and the bacterial cellulose content is 0.65%; hydroxyethyl methacrylate, the manufacturer is Shanghai Ala butyl, >97%, multi-wall carbon nano tube, the manufacturer is Shanghai Ala butyl, >95%, inner diameter 3-5nm, outer diameter 8-15 nm, length-50 μm; polyethylene glycol diacrylate, the manufacturer is Shanghai Ala-dine, the average molecular weight is 600; 1-butyl-3-methylimidazole chloride is obtained from the institute of chemical and physical, lan, national academy of sciences, purity 99%; glycerol was produced by Shanghai test.
The ionic liquid is a liquid organic salt composed of organic cations and inorganic or organic anions, has good chemical stability and thermal stability, has low vapor pressure (almost zero), and is widely applied to the fields of separation analysis, biosensing, biocatalysis and the like. Most ionic liquids are stable to water and air, with a broad temperature window. Meanwhile, the ionic liquid has good solubility to a plurality of inorganic small molecules and organic large molecules, so that various materials can be prepared in the ionic liquid.
Bacterial cellulose is a high molecular polymer with superfine fiber network structure synthesized by microbial fermentation. The structure of bacterial cellulose is almost the same as that of plant cellulose, and the main difference is that the bacterial cellulose does not contain hemicellulose or lignin. Bacterial cellulose has high water-retaining property, air permeability, biocompatibility and degradability, and is an ideal raw material for preparing hydrogel.
The multi-wall carbon nano tube is a seamless hollow tube body formed by curling a graphite sheet consisting of a layer of carbon atoms at a certain angle, and has excellent conductivity, thermal stability, high temperature resistance and easy processing property. The multi-wall carbon nano tube is adopted as the reinforcement of the composite hydrogel, so that not only can the conductivity be endowed to the hydrogel, but also the mechanical property of the hydrogel can be greatly improved.
Example 1
150mg of multi-wall carbon nano tube is taken and dispersed in 200mL of mixed solution of concentrated sulfuric acid (the mass fraction is 70%) and concentrated nitric acid (the mass fraction is 65%), and the volume ratio of the concentrated sulfuric acid to the concentrated nitric acid is 3:1. And (3) reacting the dispersion solution at 120 ℃ for 3 hours, cooling, washing with deionized water and ethanol for three times respectively, and vacuum drying at room temperature for 24 hours to obtain the modified multi-wall carbon nano tube. 0.4g of hydroxyethyl methacrylate and 0.04g of modified multi-walled carbon nanotube were added to a homogeneous solution composed of 1g of deionized water and 2g of 1-butyl-3-methylimidazole chloride salt, and stirred at 80℃for 3 hours, and mixed to obtain a mixed solution A. The mixed solution A was added to 2g of the bacterial cellulose dispersion and stirred at 100℃for 5 hours to obtain a mixed solution B. Under the nitrogen atmosphere, 0.016g of polyethylene glycol diacrylate (n=600) and 0.02g of ammonium persulfate are sequentially added into the solution, and stirring is carried out at 100 ℃ for 5 hours, thus obtaining the pregel. The obtained pre-gel was placed in 1g of glycerin and immersed for 30min, and subjected to solution displacement treatment, to obtain PBH1 gel.
Example 2
150mg of multi-wall carbon nano tube is taken and dispersed in 200mL of mixed solution of concentrated sulfuric acid (the mass fraction is 70%) and concentrated nitric acid (the mass fraction is 65%), and the volume ratio of the concentrated sulfuric acid to the concentrated nitric acid is 3:1. And (3) reacting the dispersion solution at 120 ℃ for 3 hours, cooling, washing with deionized water and ethanol for three times respectively, and vacuum drying at room temperature for 24 hours to obtain the modified multi-wall carbon nano tube. 0.4g of hydroxyethyl methacrylate and 0.04g of modified multi-walled carbon nanotube are added to a homogeneous solution composed of 1g of deionized water and 4g of 1-butyl-3-methylimidazole chloride salt, and stirred at 80℃for 3 hours, and mixed to obtain a mixed solution A. The mixed solution A was added to 2g of the bacterial cellulose dispersion and stirred at 100℃for 5 hours to obtain a mixed solution B. Under the nitrogen atmosphere, 0.016g of polyethylene glycol diacrylate (n=600) and 0.02g of ammonium persulfate are sequentially added into the solution, and stirring is carried out at 100 ℃ for 5 hours, thus obtaining the pregel. The obtained pre-gel was placed in 2g of glycerin and soaked for 30min, and solution replacement treatment was performed to obtain PBH2 gel.
Example 3
150mg of multi-wall carbon nano tube is taken and dispersed in 200mL of mixed solution of concentrated sulfuric acid (the mass fraction is 70%) and concentrated nitric acid (the mass fraction is 65%), and the volume ratio of the concentrated sulfuric acid to the concentrated nitric acid is 3:1. And (3) reacting the dispersion solution at 120 ℃ for 3 hours, cooling, washing with deionized water and ethanol for three times respectively, and vacuum drying at room temperature for 24 hours to obtain the modified multi-wall carbon nano tube. 0.4g of hydroxyethyl methacrylate and 0.04g of modified multi-walled carbon nanotube are added to a homogeneous solution composed of 1g of deionized water and 6g of 1-butyl-3-methylimidazole chloride salt, and stirred at 80℃for 3 hours, and mixed to obtain a mixed solution A. The mixed solution A was added to 2g of the bacterial cellulose dispersion and stirred at 100℃for 5 hours to obtain a mixed solution B. Under the nitrogen atmosphere, 0.016g of polyethylene glycol diacrylate (n=600) and 0.02g of ammonium persulfate are sequentially added into the solution, and stirring is carried out at 100 ℃ for 5 hours, thus obtaining the pregel. The obtained pre-gel was placed in 3g of glycerol and soaked for 30min, and solution displacement treatment was performed to obtain PBH3 gel.
Example 4
150mg of multi-wall carbon nano tube is taken and dispersed in 200mL of mixed solution of concentrated sulfuric acid (the mass fraction is 70%) and concentrated nitric acid (the mass fraction is 65%), and the volume ratio of the concentrated sulfuric acid to the concentrated nitric acid is 3:1. And (3) reacting the dispersion solution at 120 ℃ for 3 hours, cooling, washing with deionized water and ethanol for three times respectively, and vacuum drying at room temperature for 24 hours to obtain the modified multi-wall carbon nano tube. 0.4g of hydroxyethyl methacrylate and 0.04g of modified multi-walled carbon nanotube are added to a homogeneous solution composed of 1g of deionized water and 8g of 1-butyl-3-methylimidazole chloride salt, and stirred at 80℃for 3 hours, and mixed to obtain a mixed solution A. The mixed solution A was added to 2g of the bacterial cellulose dispersion and stirred at 100℃for 5 hours to obtain a mixed solution B. Under the nitrogen atmosphere, 0.016g of polyethylene glycol diacrylate (n=600) and 0.02g of ammonium persulfate are sequentially added into the solution, and stirring is carried out at 100 ℃ for 5 hours, thus obtaining the pregel. The obtained pre-gel was placed in 4g of glycerin and soaked for 30min, and solution replacement treatment was performed to obtain PBH4 gel.
Example 5
150mg of single-walled carbon nanotubes are taken and dispersed in 200mL of mixed solution of concentrated sulfuric acid (the mass fraction is 70%) and concentrated nitric acid (the mass fraction is 65%), and the volume ratio of the concentrated sulfuric acid to the concentrated nitric acid is 5:1. And (3) reacting the dispersion solution for 3 hours at 160 ℃, cooling, washing with deionized water and ethanol for three times respectively, and vacuum drying at room temperature for 24 hours to obtain the modified single-walled carbon nanotube. 1g of vinyl acetate and 0.01g of modified single-walled carbon nanotube were added to a homogeneous solution composed of 1g of deionized water and 20g of 1-vinyl-3-butylimidazole bromide, and stirred at 60℃for 5 hours, followed by mixing to obtain a mixed solution A. The mixed solution A was added to 10g of the bacterial cellulose dispersion and stirred at 120℃for 4 hours to obtain a mixed solution B. Under the nitrogen atmosphere, 0.01g of polyethylene glycol diacrylate (n=900) and 0.01g of azodiisobutyronitrile are sequentially added into the solution, and the mixture is stirred for 1h at 120 ℃ to obtain the pregel. The obtained pre-gel was placed in 4g of glycerin and soaked for 60min, and solution replacement treatment was performed to obtain PBH5 gel.
Example 6
150mg of single-walled carbon nanotubes are taken and dispersed in 200mL of mixed solution of concentrated sulfuric acid (the mass fraction is 70%) and concentrated nitric acid (the mass fraction is 65%), and the volume ratio of the concentrated sulfuric acid to the concentrated nitric acid is 3:1. And (3) reacting the dispersion solution for 3 hours at 160 ℃, cooling, washing with deionized water and ethanol for three times respectively, and vacuum drying at room temperature for 24 hours to obtain the modified single-walled carbon nanotube. 1g of vinyl acetate and 0.01g of modified single-walled carbon nanotube were added to a homogeneous solution composed of 1g of deionized water and 20g of 1-vinyl-3-butylimidazole bromide, and stirred at 60℃for 5 hours, followed by mixing to obtain a mixed solution A. The mixed solution A was added to 10g of the bacterial cellulose dispersion and stirred at 120℃for 4 hours to obtain a mixed solution B. Under the nitrogen atmosphere, 0.01g of polyethylene glycol diacrylate (n=900) and 0.01g of azodiisobutyronitrile are sequentially added into the solution, and the mixture is stirred for 1h at 120 ℃ to obtain the pregel. The obtained pre-gel was placed in 4g of glycerin and soaked for 60min, and solution replacement treatment was performed to obtain PBH6 gel.
Example 7
150mg of single-walled carbon nanotubes are taken and dispersed in 200mL of mixed solution of concentrated sulfuric acid (the mass fraction is 70%) and concentrated nitric acid (the mass fraction is 65%), and the volume ratio of the concentrated sulfuric acid to the concentrated nitric acid is 4:1. And (3) reacting the dispersion solution for 3 hours at 160 ℃, cooling, washing with deionized water and ethanol for three times respectively, and vacuum drying at room temperature for 24 hours to obtain the modified single-walled carbon nanotube. 0.5g of vinyl acetate and 0.01g of modified single-walled carbon nanotube were added to a homogeneous solution composed of 1g of deionized water and 20g of 1-vinyl-3-butylimidazole bromide, and stirred at 60℃for 5 hours, followed by mixing to obtain a mixed solution A. The mixed solution A was added to 10g of the bacterial cellulose dispersion and stirred at 120℃for 4 hours to obtain a mixed solution B. Under the nitrogen atmosphere, 0.01g of polyethylene glycol diacrylate (n=900) and 0.01g of azodiisobutyronitrile are sequentially added into the solution, and the mixture is stirred for 1h at 120 ℃ to obtain the pregel. The obtained pre-gel was placed in 4g of glycerin and soaked for 60min, and solution replacement treatment was performed to obtain PBH7 gel.
Example 8
The gel bars prepared in examples 1 to 4 were tested for tensile properties in an Instron universal tester, set at a tensile speed of 20mm/min. And after the test is finished, corresponding tensile load-displacement data are derived, and are converted into a tensile stress-strain curve by utilizing a formula. The formula for converting displacement data into tensile strain data in tensile testing is:wherein ε is t Represents tensile strain, l t Representing the displacement of the stretching of the spline, and d represents the length of the spline in the initial state of stretching. The formula for converting tensile load into tensile stress data is +.>Wherein sigma t Representing tensile stress, F l Representing tensile load, S represents the cross-sectional area (i.e., width, thickness) of the spline. The specific test results are shown in fig. 1, and as the amount of glycerol and ionic liquid increases, the tensile properties of the conductive gel also increase, wherein the tensile properties of PBH4 are optimal. This is because a large amount of hydrogen bonds exist in glycerol, and as the amount of glycerol increases, the hydrogen bonding effect increases gradually. When the gel is subjected to stretching, the gel network can take on more energy dissipation and thus increased stability, and thus increased stretching properties.
Example 9
The gel samples prepared in examples 1 to 4 were tested for compression properties in an Instron universal tester, with a set compression rate of 2mm/min. And after the test is finished, the corresponding compression load-displacement data are derived, and are converted into a compression stress-strain curve by utilizing a formula. The formula for converting displacement data into compressive strain data in the compression test is:wherein ε is c Representing compressive strain, l c Representing the displacement of the sample block compression, h represents the original thickness of the sample block. The formula for converting the compressive load into compressive stress data is: />Wherein sigma c Representing compressive stress, F c Representing compression load, S represents the bottom area of the cylindrical sample block +.>The specific test results are shown in fig. 2, and as the amount of glycerol and ionic liquid increases, the compression performance of the conductive gel increases, wherein the compression performance of the PBH4 is optimal. This is because there are a large number of hydrogen bonds in glycerol, and as the amount of glycerol increases, the hydrogen bonding increases, and as the gel is subjected to pressure, the gel network can take on more energy dissipation, and thus stability, and thus compression properties, to increase.
Example 10
The gel bars in example 4 were stretched to 30% strain at-40℃respectively, and the relative resistance change DeltaR/R of the antifreeze gel was recorded 0 Wherein R is 0 Represents the original resistance value of the gel before testing, and DeltaR represents the difference between the resistance value after stretching for a certain strain and the original resistance value. The specific test results are shown in figure 3, and the gel has good resistance response at 30% strain at-40 ℃, which shows that the antifreeze conductive gel prepared by the application can conduct electricity under low temperature conditions and has operability at low temperature.
Example 11
The carbon nanotube-based conductive hydrogels prepared in examples 1 to 4 were subjected to resistivity test by: the prepared carbon nano tube-based conductive hydrogel is tested by using a four-probe resistivity tester, the resistivity of the MWCNT1-H carbon nano tube-based conductive hydrogel is 123388 +/-972.9 omega cm, the resistivity of the MWCNT2-H carbon nano tube-based conductive hydrogel is 114154 +/-4177.5 omega cm, the resistivity of the MWCNT3-H carbon nano tube-based conductive hydrogel is 93666 +/-429.9 omega cm, the resistivity of the MWCNT4-H carbon nano tube-based conductive hydrogel is 75610 +/-1626.3 omega cm, the resistivity is the conductivity reciprocal, and the greater the resistivity is, the smaller the conductivity is, which shows that the conductivity of the hydrogel is increased along with the increase of the dosage of the modified carbon nano tube.
The foregoing description is only a few examples of the present application and is not intended to limit the present application in any way, and although the present application is disclosed in the preferred examples, it is not intended to limit the present application, and any person skilled in the art may make some changes or modifications to the disclosed technology without departing from the scope of the technical solution of the present application, and the technical solution is equivalent to the equivalent embodiments.
Claims (8)
1. An antifreeze conductive gel is characterized in that,
the preparation method of the antifreeze conductive gel at least comprises the following steps:
crosslinking a solution I containing acrylic ester substances, carbon nano tubes and bacterial cellulose to obtain pre-gel;
the pre-gel is subjected to solvent replacement in glycerol to obtain the anti-freezing conductive gel;
wherein the solution I comprises imidazole ionic liquid and deionized water;
the antifreeze conductive gel at least comprises the following raw materials: bacterial cellulose, acrylic ester substances, carbon nano tubes, ionic liquid, a cross-linking agent, glycerol and deionized water;
the ionic liquid is imidazole ionic liquid;
the mass ratio of the bacterial cellulose to the acrylic ester substance is 10:0.1-1;
the mass ratio of the acrylic ester substances to the deionized water is 0.01-1:1;
the mass ratio of the carbon nano tube to the deionized water is 1:20-100;
the mass ratio of the ionic liquid to the deionized water is 1-20:1;
the mass ratio of the glycerol to the deionized water is 0.1-10:1;
the acrylic ester substance is at least one selected from hydroxyethyl methacrylate and vinyl acetate;
the carbon nanotubes are acidified modified carbon nanotubes.
2. The antifreeze conductive gel of claim 1, wherein,
the imidazole ionic liquid is at least one selected from 1-butyl-3-methylimidazole bromide, 1-butyl-3-methylimidazole chloride, 1-propyl-3-methylimidazole bromide, 1-propyl-3-methylimidazole chloride and 1-vinyl-3-butylimidazole bromide.
3. The antifreeze conductive gel of claim 1, wherein,
the cross-linking agent is at least one of polyethylene glycol diacrylate, N' -methylene bisacrylamide, phytic acid and diisocyanate;
the dosage of the cross-linking agent is 0.5-10% of the mass of the acrylic ester substance.
4. The antifreeze conductive gel of claim 1, wherein,
the conditions for the crosslinking include:
adding a cross-linking agent and an initiator into the solution I to carry out a cross-linking reaction to obtain the pregel;
the temperature of the crosslinking reaction is 50-120 ℃, and the crosslinking reaction time is 0.5-12 h.
5. The antifreeze conductive gel of claim 4, wherein,
the initiator is at least one of ammonium persulfate, potassium persulfate and azodiisobutyronitrile;
the amount of the initiator is 1% -15% of the mass of the acrylic ester substance.
6. The antifreeze conductive gel of claim 1, wherein,
the conditions for the solvent displacement include:
the solvent replacement treatment time is 5-120 min.
7. The antifreeze conductive gel of claim 1, wherein,
the obtaining mode of the solution I comprises the following steps:
adding acrylic ester substances and carbon nano tubes into a homogeneous solution containing ionic liquid and deionized water, and mixing to obtain a mixed solution A;
adding the mixed solution A into a dispersion liquid containing bacterial cellulose, and mixing to obtain a solution I;
obtaining the mixing temperature of the mixed solution A to be 60-100 ℃;
the mixing temperature of the solution I is 80-120 ℃.
8. Use of the antifreeze conductive gel of any of claims 1 to 7 in flexible electronic devices.
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