CN110703531A - Electrophoresis liquid with electrorheological effect and preparation method thereof - Google Patents
Electrophoresis liquid with electrorheological effect and preparation method thereof Download PDFInfo
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- CN110703531A CN110703531A CN201911012076.5A CN201911012076A CN110703531A CN 110703531 A CN110703531 A CN 110703531A CN 201911012076 A CN201911012076 A CN 201911012076A CN 110703531 A CN110703531 A CN 110703531A
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- solvent
- electrorheological
- reaction product
- electrophoretic
- particles
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- 238000001962 electrophoresis Methods 0.000 title claims description 17
- 238000002360 preparation method Methods 0.000 title description 10
- 239000002245 particle Substances 0.000 claims abstract description 84
- 239000012530 fluid Substances 0.000 claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 39
- 239000002904 solvent Substances 0.000 claims description 128
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 67
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 37
- 238000003756 stirring Methods 0.000 claims description 35
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 33
- FYGHSUNMUKGBRK-UHFFFAOYSA-N 1,2,3-trimethylbenzene Chemical compound CC1=CC=CC(C)=C1C FYGHSUNMUKGBRK-UHFFFAOYSA-N 0.000 claims description 32
- 239000006229 carbon black Substances 0.000 claims description 32
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 30
- 239000007795 chemical reaction product Substances 0.000 claims description 26
- 239000003999 initiator Substances 0.000 claims description 23
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 22
- 235000019438 castor oil Nutrition 0.000 claims description 22
- 239000004359 castor oil Substances 0.000 claims description 22
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 22
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 21
- 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 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 17
- 239000003607 modifier Substances 0.000 claims description 16
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims description 14
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
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- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 11
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- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 11
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- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000178 monomer Substances 0.000 claims description 10
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- 239000007822 coupling agent Substances 0.000 claims description 8
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- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 8
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 8
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 7
- ZQMHJBXHRFJKOT-UHFFFAOYSA-N methyl 2-[(1-methoxy-2-methyl-1-oxopropan-2-yl)diazenyl]-2-methylpropanoate Chemical compound COC(=O)C(C)(C)N=NC(C)(C)C(=O)OC ZQMHJBXHRFJKOT-UHFFFAOYSA-N 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 7
- 229920002545 silicone oil Polymers 0.000 claims description 7
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 230000002378 acidificating effect Effects 0.000 claims description 6
- 239000003093 cationic surfactant Substances 0.000 claims description 6
- 239000002736 nonionic surfactant Substances 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 239000002888 zwitterionic surfactant Substances 0.000 claims description 6
- LEHYVWPTCZUQIV-UHFFFAOYSA-N 2-nonylphenol;2-sulfobutanedioic acid Chemical class OC(=O)CC(C(O)=O)S(O)(=O)=O.CCCCCCCCCC1=CC=CC=C1O LEHYVWPTCZUQIV-UHFFFAOYSA-N 0.000 claims description 5
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 5
- 125000004423 acyloxy group Chemical group 0.000 claims description 5
- 125000005233 alkylalcohol group Chemical group 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 5
- 239000003945 anionic surfactant Substances 0.000 claims description 5
- 229910052593 corundum Inorganic materials 0.000 claims description 5
- GMSCBRSQMRDRCD-UHFFFAOYSA-N dodecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCOC(=O)C(C)=C GMSCBRSQMRDRCD-UHFFFAOYSA-N 0.000 claims description 5
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- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 5
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 5
- JXUKBNICSRJFAP-LBPRGKRZSA-N triethoxy-[3-[[(2r)-oxiran-2-yl]methoxy]propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOC[C@H]1CO1 JXUKBNICSRJFAP-LBPRGKRZSA-N 0.000 claims description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 5
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 4
- YIVJZNGAASQVEM-UHFFFAOYSA-N Lauroyl peroxide Chemical compound CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC YIVJZNGAASQVEM-UHFFFAOYSA-N 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 4
- 150000004645 aluminates Chemical class 0.000 claims description 4
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 4
- RNVCVTLRINQCPJ-UHFFFAOYSA-N o-toluidine Chemical compound CC1=CC=CC=C1N RNVCVTLRINQCPJ-UHFFFAOYSA-N 0.000 claims description 4
- 229920002647 polyamide Polymers 0.000 claims description 4
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 4
- 229920002554 vinyl polymer Polymers 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- 229920002367 Polyisobutene Polymers 0.000 claims description 3
- VBIIFPGSPJYLRR-UHFFFAOYSA-M Stearyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)C VBIIFPGSPJYLRR-UHFFFAOYSA-M 0.000 claims description 3
- GXDVEXJTVGRLNW-UHFFFAOYSA-N [Cr].[Cu] Chemical compound [Cr].[Cu] GXDVEXJTVGRLNW-UHFFFAOYSA-N 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
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- 150000001875 compounds Chemical class 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 3
- -1 ester disodium salt Chemical class 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- YWFWDNVOPHGWMX-UHFFFAOYSA-N n,n-dimethyldodecan-1-amine Chemical compound CCCCCCCCCCCCN(C)C YWFWDNVOPHGWMX-UHFFFAOYSA-N 0.000 claims description 3
- DVEKCXOJTLDBFE-UHFFFAOYSA-N n-dodecyl-n,n-dimethylglycinate Chemical compound CCCCCCCCCCCC[N+](C)(C)CC([O-])=O DVEKCXOJTLDBFE-UHFFFAOYSA-N 0.000 claims description 3
- 239000002105 nanoparticle Substances 0.000 claims description 3
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- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 3
- AKHDHYNLUFXFNL-UHFFFAOYSA-M sodium;2-ethoxyethyl sulfate Chemical compound [Na+].CCOCCOS([O-])(=O)=O AKHDHYNLUFXFNL-UHFFFAOYSA-M 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
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- POILWHVDKZOXJZ-ARJAWSKDSA-M (z)-4-oxopent-2-en-2-olate Chemical compound C\C([O-])=C\C(C)=O POILWHVDKZOXJZ-ARJAWSKDSA-M 0.000 claims description 2
- ZFFMLCVRJBZUDZ-UHFFFAOYSA-N 2,3-dimethylbutane Chemical group CC(C)C(C)C ZFFMLCVRJBZUDZ-UHFFFAOYSA-N 0.000 claims description 2
- ZOTKGMAKADCEDH-UHFFFAOYSA-N 5-triethoxysilylpentane-1,3-diamine Chemical compound CCO[Si](OCC)(OCC)CCC(N)CCN ZOTKGMAKADCEDH-UHFFFAOYSA-N 0.000 claims description 2
- NSYVWNZRHYLPDY-UHFFFAOYSA-N 6-[dimethoxy(methyl)silyl]-1-n,1-n-dimethylhexane-1,4-diamine Chemical compound CO[Si](C)(OC)CCC(N)CCCN(C)C NSYVWNZRHYLPDY-UHFFFAOYSA-N 0.000 claims description 2
- 229910014033 C-OH Inorganic materials 0.000 claims description 2
- 125000006414 CCl Chemical group ClC* 0.000 claims description 2
- 229910014570 C—OH Inorganic materials 0.000 claims description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 2
- AMTWCFIAVKBGOD-UHFFFAOYSA-N dioxosilane;methoxy-dimethyl-trimethylsilyloxysilane Chemical compound O=[Si]=O.CO[Si](C)(C)O[Si](C)(C)C AMTWCFIAVKBGOD-UHFFFAOYSA-N 0.000 claims description 2
- KJISMKWTHPWHFV-UHFFFAOYSA-N ethyl(dimethyl)silicon Chemical compound CC[Si](C)C KJISMKWTHPWHFV-UHFFFAOYSA-N 0.000 claims description 2
- HMZGPNHSPWNGEP-UHFFFAOYSA-N octadecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C(C)=C HMZGPNHSPWNGEP-UHFFFAOYSA-N 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 229940083037 simethicone Drugs 0.000 claims description 2
- BPSIOYPQMFLKFR-VIFPVBQESA-N trimethoxy-[3-[[(2r)-oxiran-2-yl]methoxy]propyl]silane Chemical compound CO[Si](OC)(OC)CCCOC[C@H]1CO1 BPSIOYPQMFLKFR-VIFPVBQESA-N 0.000 claims description 2
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- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 2
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 description 2
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Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
- G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
- G02F2001/1678—Constructional details characterised by the composition or particle type
Abstract
The electrorheological effect of the electrophoretic particles is a reverse electrorheological fluid principle, the reverse electrorheological fluid refers to that when materials with electrorheological effect added into an electrophoretic liquid system are in a non-conductive state, the added electrorheological materials have the capacity of forming a network structure through mutual physical crosslinking, so that a non-Newtonian fluid is formed, when the materials are in a conductive state, an electric field acts on the electrophoretic particles to impact the crosslinked network structure to break the crosslinked network structure so as to form a Newtonian fluid, and the movement speed of the particles is increased by times along with the reduction of the viscosity of the electrophoretic liquid system. The electrophoretic particles have high shearing strength, the cost of various raw materials is saved by the method, and the bistable effect can be ensured under the condition of ensuring the response time of the electronic paper.
Description
Technical Field
The invention relates to the field of electrophoretic display, in particular to an electrophoretic fluid with electrorheological effect and a preparation method thereof.
Background
Electronic paper is increasingly popular in the market as a light, thin and flexible display device, and in recent years, electronic paper has come into the consumer electronics field, and has been widely applied to billboards and price display boards. The electrophoretic particles are the core of electrophoretic display, and have good effects of protecting eyes, reducing energy consumption, protecting environment and the like through a light-source-free turnover display mode.
The display bistable state is a key technology of the electronic paper, and the characteristic of electrophoretic particles settling due to gravity needs to be overcome to achieve the bistable state, so that the shape stability and the dispersion stability of the electrophoretic particles in an electrophoretic solution are maintained, and the display state is kept for a longer time. The electrophoretic fluid can be made into a slurry type, the viscosity of the electrophoretic fluid system is increased to slow down the sedimentation velocity of electrophoretic particles, or polyisoprene is added into the electrophoretic fluid to improve the bistable state. The electrophoretic particles of the prior art often do not disperse stably in the flowing liquid, resulting in the occurrence of aggregates. When the electrophoretic particles are dispersed in a flowing liquid for a long time, the electrophoretic particles change their own properties, which increases the response time of the electronic paper and decreases the contrast. Meanwhile, the material cost for producing the electrophoretic particles and the electrophoretic liquid in the prior art is higher.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the electrophoretic fluid with electrorheological effect has lower production cost and better bistable effect and the preparation method thereof.
In order to solve the above technical problem, the present invention provides an electrophoretic fluid with an electrorheological effect, which is characterized in that: the electrophoresis liquid comprises electrophoresis particles, a solvent, a charge control agent, a stabilizer and at least one material with electrorheological effect, wherein in the electrophoresis liquid with electrorheological effect, the mass of the solvent accounts for 30-80% of the system, the mass of the electrophoresis particles accounts for 17-65% of the system, and the mass of the material with electrorheological effect, the charge control agent and the stabilizer accounts for 3-5% of the system.
Further, the electrophoretic particles comprise a base material comprising one of the following compounds: TiO 22、Al2O3、BaSO4、Fe2O3、SiO2Carbon black, cobalt green, copper chromium black, calcium carbonate, organic red, organic blue, organic green or organic yellow, wherein the electrophoretic particles are prepared by the following steps:
s1, dispersing a base material in a first solvent, wherein the mass of the base material accounts for 2-60% of that of the first solvent, dispersing for 10-120min under the conditions of heating and stirring, then adding a second solvent and a modifier under the acidic or alkaline condition, and stirring for 30-500min to obtain a first reaction product;
s2, removing the solvent from the first reaction product, cleaning the first reaction product by using a third solvent, and dispersing the cleaned first reaction product into the third solvent, wherein the mass of the first reaction product is 20-80% of that of the third solvent, so as to obtain a second reaction product;
s3, placing the second reaction product under the conditions of sealing and oxygen resisting to perform rotary stirring at the rotating speed of 200-1000 rpm, and adding an organic monomer with at least one of the following groups: -CH2CH2-, -COOH, C-NH2, N-O, C-O, N-H, F-H, C-OH, C-NO2 or C-Cl; dissolving an initiator in the third solvent to obtain an initiator mixed solution, wherein the mass of the initiator is 3-10% of that of the third solvent, dropwise adding the initiator mixed solution under the condition that the heating temperature is 30-130 ℃, the dropwise adding time of the initiator mixed solution is 1-500min, and reacting for 5-130h after the dropwise adding is finished to obtain a third reaction product;
s4, cleaning the third reaction product by using the third solvent, then cleaning by using a fourth solvent, and obtaining a fourth reaction product after cleaning is finished; and dispersing the fourth reaction product in the fourth solvent to obtain electrophoretic particles, wherein the mass of the fourth reaction product is 5-60% of that of the fourth solvent.
Further, the first solvent is one of water, ethanol, methanol, n-butanol, toluene, xylene, dichloromethane and tetrachloroethylene;
the second solvent is one of water, ethanol, methanol, n-butanol, toluene, xylene, dichloromethane and tetrachloroethylene;
the third solvent is one of water, ethanol, butanol, benzene, toluene, xylene, trimethylbenzene, carbon tetrachloride, dichloromethane, tetrachloroethylene, an alkane solvent or an isoparaffin solvent;
the fourth solvent is one of water, ethanol, butanol, benzene, toluene, xylene, trimethylbenzene, carbon tetrachloride, dichloromethane, tetrachloroethylene, an alkane solvent, an isoparaffin solvent, simethicone, vinyl silicone oil or castor oil.
Further, in the step S1, the modifier is a titanate coupling agent, an aluminate coupling agent, a silane coupling agent, a surfactant, or an initiator; wherein:
the titanate coupling agents are: isopropyl trioleate titanate, isopropyl triisostearate titanate, diisopropyl di (acetylacetonate) titanate, isopropyl dioleate acyloxy (dioctylphosphonoyl) titanate or isopropyl tri (dioctylphosphonoyl) titanate;
the aluminate coupling agent is: isopropoxydistearoyloxyaluminate;
the silane coupling agents are: 3- (2-aminoethyl) -aminopropyltriethoxysilane, 2- (3, 4-epoxycyclopolyethyl) ethyldimethylsilane, 3- (N, N-dimethylaminopropyl) -aminopropylmethyldimethoxysilane, r-glycidyloxypropyltriethoxysilane, r-methacryloyloxytrimethoxysilane or r-glycidyloxypropyltrimethoxysilane;
the initiator is as follows: dibenzoyl peroxide, lauroyl peroxide, azobisisobutyronitrile, azobisisoheptonitrile, potassium persulfate, ammonium persulfate, or dimethyl azobisisobutyrate.
Further, in step S3, the organic monomers are: at least one of methyl methacrylate, aniline, o-toluidine, lauryl methacrylate, octadecyl methacrylate, vinyl silicone oil and styrene; the initiator is at least one of dibenzoyl peroxide, lauroyl peroxide, azobisisobutyronitrile, azobisisoheptonitrile, potassium persulfate, ammonium persulfate and dimethyl azobisisobutyrate.
Further, the solvent is one of pure water, ethanol, butanol, benzene, toluene, xylene, trimethylbenzene, carbon tetrachloride, dichloromethane, tetrachloroethylene, alkane solvent or isoparaffin solvent, silicone oil, vegetable oil and castor oil;
the stabilizer is polyvinylpyrrolidone.
Further, the material with electrorheological effect is at least one of inorganic nano-particles or high molecular oligomers such as hydrogenated castor oil, glycerol, polyamide wax powder, superfine kaolin, superfine silicon dioxide, polyisobutylene and the like;
the material with the electrorheological effect is a positive electrorheological material or a reverse electrorheological material;
the material with electrorheological effect comprises a long-chain, oleophilic organic segment and a short-chain functional segment, wherein the short-chain functional segment comprises at least one of-COO-, -NHCO-, -SO2 Cl-CH 2CH 2-.
Further, the charge control agent is at least one of cationic surfactant, anionic surfactant, nonionic surfactant or zwitterionic surfactant;
the cationic surfactant is: octadecyl trimethyl ammonium chloride or N, N dimethyl dodecyl amine;
the anionic surfactant is: sodium dodecylbenzene sulfonate or sodium ethoxyethyl sulfate;
the nonionic surfactant is as follows: alkyl alcohol polyoxyethylene ether or alkylphenol polyoxyethylene ether;
the zwitterionic surfactant is as follows: ethoxylated nonylphenol sulfosuccinic acid half ester disodium salt or dodecyl dimethyl betaine.
Furthermore, the electrophoresis particles in the electrophoresis liquid with electrorheological effect are at least one.
The invention has the beneficial effects that: the electrorheological effect of the electrophoretic particles is the electroviscosity and the double electric layer effect, the electroviscosity is that the electrophoretic particles form a bonding layer through the transfer between organic matter charges coated on the surface, the viscosity of the electrophoretic particles is increased by multiple orders or even orders of magnitude, the shearing strength of the electrophoretic particles is high, the method saves the cost of various raw materials, and the bistable effect can be ensured under the condition of ensuring the response time of electronic paper.
Drawings
The invention is described in detail below with reference to the accompanying drawings:
FIG. 1 is a white L-value comparison chart according to an embodiment of the present invention;
FIG. 2 is a graph comparing black L values in the examples of the present invention.
Detailed Description
In order to make the objects, technical solutions and technical effects of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and the specific embodiments, it should be understood that the specific embodiments described in the present specification are only for explaining the present invention and are not intended to limit the present invention.
The invention provides an electrophoretic fluid with electrorheological effect. At least one material with electrorheological effect is added into the electrophoretic liquid, and the material has long-chain, oleophilic organic segment and short-chain functional segment and plays a role in physical connection or chemical connection in an electrophoretic liquid system. In the electrophoresis liquid system, the mass of the solvent accounts for 30-80% of the system, the mass of the electrophoresis particles accounts for 17-65% of the system, and the mass of the material with electrorheological effect, the charge control agent and the stabilizing agent accounts for 3-5% of the system.
Specifically, the electrophoretic particles are inorganic materials, organic materials or composite materials; the electrophoretic particles comprise at least one of the following elements: al, C, Si, Ti, O, Cu, Fe, Ba, Mo, Cr, F, Ca, Co, S, N, H or Cl. In this embodiment, the electrophoretic particles include one of the following compounds: TiO prepared by tetrabutyl titanate sol-gel process2Commercial TiO 22、Al2O3、BaSO4、Fe2O3、 SiO2Carbon black, cobalt green, copper chromium black, calcium carbonate, organic red, organic blue, organic green or organic yellow, and the surface of the particles is organically modified to increase the steric hindrance of the particles in the electrophoretic solution.
Specifically, the material with electrorheological effect is an organic polymer with long framework, or a mixture of polymer and particles, and the connection or disconnection can be performed through a physical or chemical method, so that the electrophoretic fluid can be freely and reversibly switched between the non-newtonian fluid and the newtonian fluid. When the electrophoretic liquid is converted into the Newtonian fluid, the electrophoretic particles can freely move in the electrophoretic liquid under the action of the electric field to realize the conversion of the display state, and when the electrophoretic liquid is converted into the non-Newtonian fluid, the electrophoretic particles are static or move very slowly in the electrophoretic liquid, so that the electrophoretic particles can realize the stable state in the non-Newtonian fluid state.
Specifically, the conversion between the newtonian fluid and the non-newtonian fluid of the electrophoretic fluid is generated by controlling an alternating electric field, the long skeleton polymer chain or the mixed particles are the non-newtonian fluid when the physical or chemical adsorption crosslinking is performed, the crosslinking structure of the electrorheological material is destroyed when the alternating electric field controls the vibration of the electrophoretic particles, and the electrophoretic fluid is represented as the newtonian fluid.
Specifically, the material with electrorheological effect has not only oleophilic organic segment, but also one or more of the following functional segments of functional groups: -COO-, -NHCO-, -SO2Cl, -CH2CH 2-.
Specifically, the material with the electrorheological effect comprises inorganic nanoparticles or high polymer oligomers such as hydrogenated castor oil, glycerol, polyamide wax powder, superfine kaolin, superfine silicon dioxide, polyisobutylene and the like, and the material with the electrorheological effect is a positive electrorheological material or a reverse electrorheological material.
Specifically, the solvent is one of pure water, ethanol, butanol, benzene, toluene, xylene, trimethylbenzene, carbon tetrachloride, dichloromethane, tetrachloroethylene, an alkane solvent or an isoparaffin solvent, silicone oil, vegetable oil and castor oil.
Specifically, the charge control agent is a cationic surfactant, an anionic surfactant, a nonionic surfactant or a zwitterionic surfactant; the charge control agent is one or more of the following combinations, wherein:
the cationic surfactant is: octadecyl trimethyl ammonium chloride or N, N dimethyl dodecyl amine;
the anionic surface activity is as follows: sodium dodecylbenzene sulfonate or sodium ethoxyethyl sulfate;
the nonionic surfactant is: alkyl alcohol polyoxyethylene ether or alkylphenol polyoxyethylene ether;
the zwitterionic surfactant is as follows: ethoxylated nonylphenol sulfosuccinic acid half ester disodium salt or dodecyl dimethyl betaine.
Specifically, the stabilizer is polyvinylpyrrolidone.
Specifically, the electrophoretic particles in the electrophoretic fluid may be at least one. The electrophoretic liquid selects two electrophoretic particles with different colors to combine better. Examples may include Al2O3Electrophoretic fluid of white electrophoretic particles, and electrophoretic fluid containing Al2O3White electrophoretic particles and Fe2O3Electrophoretic fluid of red electrophoretic particles, and BaSO-containing electrophoretic fluid4White electrophoretic particles, carbon black electrophoretic particles and organic red electrophoretic particles.
From the above description, the beneficial effects of the present invention are: the electrorheological effect of the electrophoretic particles is an inverse electrorheological fluid principle, the inverse electrorheological fluid is a non-Newtonian fluid formed by the ability that materials with electrorheological effect added into an electrophoretic fluid system have a network structure formed by mutual physical crosslinking when in a non-conductive state, and the electrophoretic particles are broken to form the Newtonian fluid when impacting the crosslinked network structure under the action of field intensity when in a conductive state, and the motion speed of the particles is increased at a speed which is multiplied by the reduction of the viscosity of the electrophoretic fluid system. The electrophoretic particles have high shearing strength, the cost of various raw materials is saved by the method, and the bistable effect can be ensured under the condition of ensuring the response time of the electronic paper.
Example 1
The embodiment provides an electrophoretic particle with electrorheological effect and a preparation method thereof:
s1, 10g of white pigment BaSO4Dispersing the pigment in 500g of ethanol solvent under stirring, adjusting the temperature to 60 ℃, heating and stirring for 10min, adding 2.5g of modifier r-glycidoxypropyltriethoxysilane 0.25g of solvent under acidic conditionAdding modifier and solvent into the dispersed BaSO in pure water4Stirring and reacting in the suspension for 30min to prepare modified pigment BaSO4；
S2, modifying the modified BaSO4Removing solvent and solvent from the pigment, adding solvent toluene to clean the modified BaSO4Pigment, then BaSO4The pigment was dispersed in 40g of toluene solvent;
s3, mixing BaSO4Adding pigment dispersion liquid into a sealed reaction kettle with an oxygen barrier function, adding 15g of organic monomer methyl methacrylate, starting the stirring speed to be 200rpm, adjusting the temperature to be 30 ℃, preparing initiator mixed liquid, dissolving 0.2g of Azobisisobutyronitrile (AIBN) into 6g of third solvent toluene, dropwise adding the mixture into the reaction kettle within 1min after the temperature of the reaction kettle rises to 30 ℃ and is stabilized for 30min to initiate reaction to prepare electrophoretic particles, and keeping for 5h after the dropwise adding is finished to finish the reaction;
and S4, removing the solvent which does not participate in the reaction in the electrophoretic particles, washing with solvent castor oil, and dispersing in 190g of solvent castor oil.
Example 2
The embodiment provides an electrophoretic particle with electrorheological effect and a preparation method thereof:
s1, 150g of white pigment BaSO4Dispersing the pigment in 500g of solvent ethanol under stirring, adjusting the temperature to 60 ℃, heating and stirring for 60min, adding 40g of modifier r-glycidoxypropyltriethoxysilane into 4g of solvent pure water under acidic condition, adding the modifier and the solvent into the well dispersed BaSO4Stirring and reacting in the suspension for 250min to prepare modified pigment BaSO4；
S2, modifying the modified BaSO4Removing solvent and solvent from the pigment, adding solvent toluene to clean the modified BaSO4Pigment, then BaSO4The pigment was dispersed in toluene, a solvent of 150 g;
s3, mixing BaSO4Adding pigment dispersion liquid into a sealed reaction kettle with oxygen barrier function, adding 225g of organic monomer methyl methacrylate, starting stirring at 600rpm, adjusting the temperature to 80 ℃, preparing initiator mixed solution, dissolving 5.4g of Azobisisobutyronitrile (AIBN) in 90g of the mixtureIn toluene as a three-solvent, after the temperature of a reaction kettle rises to 80 ℃ and is stabilized for 30min, dropwise adding the mixture into the reaction kettle within 250min to initiate reaction to prepare electrophoretic particles, and after the dropwise adding is completed, maintaining for 60h to complete the reaction;
and S4, removing the solvent which does not participate in the reaction in the electrophoretic particles, washing with solvent castor oil, and dispersing in 350g of solvent castor oil.
Example 3
The embodiment provides an electrophoretic particle with electrorheological effect and a preparation method thereof:
s1, mixing 300g of white pigment BaSO4Dispersing the pigment in 500g of solvent ethanol under stirring, adjusting the temperature to 60 ℃, heating and stirring for 120min, adding 75g of modifier r-glycidoxypropyltriethoxysilane into 7.5g of solvent pure water under acidic condition, adding the modifier and the solvent into the well dispersed BaSO4Stirring and reacting in the suspension for 500min to prepare modified pigment BaSO4；
S2, modifying the modified BaSO4Removing solvent and solvent from the pigment, adding solvent toluene to clean the modified BaSO4Pigment, then BaSO4The pigment was dispersed in 75g of solvent toluene;
s3, mixing BaSO4Adding pigment dispersion liquid into a sealed reaction kettle with an oxygen barrier function, adding 450g of organic monomer methyl methacrylate, starting the stirring speed to be 1000rpm, adjusting the temperature to be 130 ℃, preparing initiator mixed liquid, dissolving 18g of Azobisisobutyronitrile (AIBN) into 180g of third solvent toluene, dropwise adding the mixture into the reaction kettle within 500min after the temperature of the reaction kettle rises to 130 ℃ and is stabilized for 30min to initiate reaction to prepare electrophoretic particles, and maintaining for 130h to complete the reaction after the dropwise adding is completed;
and S4, removing the solvent which does not participate in the reaction in the electrophoretic particles, washing with solvent castor oil, and dispersing in 200g of solvent castor oil.
Example 4
The embodiment provides an electrophoretic particle with electrorheological effect and a preparation method thereof:
s1, weighing 6g of carbon black pigment, adding the carbon black pigment into 300g of solvent toluene under the stirring condition, adjusting the temperature to 110 ℃, heating and stirring for 10min, adding 2g of modifier isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate into 2g of solvent pure water under the alkaline condition, adding the modifier and the solvent into the dispersed carbon black suspension, and stirring for 30min to react to prepare modified pigment carbon black;
s2, removing the solvent and the solvent from the modified carbon black pigment, adding a solvent trimethylbenzene to wash the modified carbon black pigment, and dispersing the carbon black pigment in 24g of solvent trimethylbenzene;
s3, adding the carbon black pigment dispersion liquid into a sealed reaction kettle with an oxygen barrier function, adding 12g of organic matter monomer lauryl methacrylate, starting stirring, adjusting the temperature to 30 ℃, preparing initiator mixed liquid, dissolving 0.2g of dimethyl azodiisobutyrate in 6g of solvent trimethylbenzene, dropwise adding the mixture into the reaction kettle to initiate reaction to prepare electrophoretic particles after the reaction temperature is raised to 30 ℃ and stabilized for 30min, wherein the dropwise adding time is 1 min. After the dropwise addition is finished, keeping for 5 hours to finish the reaction;
and S4, removing the solvent participating in the reaction in the electrophoretic particles, washing with a fourth solvent of castor oil, and dispersing in 114g of solvent of castor oil.
Example 5
The embodiment provides an electrophoretic particle with electrorheological effect and a preparation method thereof:
s1, weighing 90g of carbon black pigment, adding the carbon black pigment into 300g of solvent toluene under the stirring condition, adjusting the temperature to 110 ℃, heating and stirring for 60min, adding 30g of modifier isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate into 30g of solvent pure water under the alkaline condition, adding the modifier and the solvent into the dispersed carbon black suspension, and stirring for reaction for 250min to prepare modified pigment carbon black;
s2, removing the solvent and the solvent from the modified carbon black pigment, adding a solvent trimethylbenzene to wash the modified carbon black pigment, and dispersing the carbon black pigment in 360g of solvent trimethylbenzene;
s3, adding the carbon black pigment dispersion liquid into a sealed reaction kettle with an oxygen barrier function, adding 180g of organic matter monomer lauryl methacrylate, starting stirring, adjusting the temperature to 80 ℃, preparing initiator mixed liquid, dissolving 5.4g of dimethyl azodiisobutyrate into 90g of solvent trimethylbenzene, dropwise adding the mixture into the reaction kettle to initiate reaction to prepare electrophoretic particles after the reaction temperature is raised to 80 ℃ and stabilized for 30min, wherein the dropwise adding time is 250 min. After the dropwise addition is finished, keeping for 60h to finish the reaction;
and S4, removing the solvent participating in the reaction in the electrophoretic particles, washing with a fourth solvent of castor oil, and dispersing in 210g of solvent of castor oil.
Example 6
The embodiment provides an electrophoretic particle with electrorheological effect and a preparation method thereof:
s1, weighing 180g of carbon black pigment, adding the carbon black pigment into 300g of solvent toluene under the stirring condition, adjusting the temperature to 110 ℃, heating and stirring for 120min, adding 60g of modifier isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate into 60g of solvent pure water under the alkaline condition, adding the modifier and the solvent into the dispersed carbon black suspension, and stirring and reacting for 500min to prepare modified pigment carbon black;
s2, removing the solvent and the solvent from the modified carbon black pigment, adding a solvent trimethylbenzene to wash the modified carbon black pigment, and dispersing the carbon black pigment in 720g of solvent trimethylbenzene;
s3, adding the carbon black pigment dispersion liquid into a sealed reaction kettle with an oxygen barrier function, adding 360g of organic matter monomer lauryl methacrylate, starting stirring, adjusting the temperature to 130 ℃, preparing initiator mixed liquid, dissolving 18g of dimethyl azodiisobutyrate into 180g of solvent trimethylbenzene, dropwise adding the mixture into the reaction kettle to initiate reaction to prepare electrophoretic particles after the reaction temperature is raised to 130 ℃ and stabilized for 30min, wherein the dropwise adding time is 500 min. After the dropwise addition is finished, the reaction is finished after 130 hours;
and S4, removing the solvent participating in the reaction in the electrophoretic particles, washing with a fourth solvent of castor oil, and dispersing in 120g of solvent of castor oil.
Example 7
Under the acidic condition, weighing 300g of solvent pure water, stirring in a reaction kettle, weighing 50g of aniline and 3.5g of modifying agent surfactant cetyl trimethyl ammonium bromide, adding into the reaction kettle, stirring and reacting for 5 hours under the condition of cooling, dissolving 2g of initiator ammonium persulfate in 60g of solvent pure water, dropwise adding into the reaction kettle, finishing dropwise adding in 30min, and reacting for 2 hours after the dropwise adding is finished. Cleaning a reaction product, dispersing the reaction product in solvent pure water, storing for 20h, adding solvent ethanol into the stored polyaniline solution, uniformly mixing, simultaneously adding 2.5g of polyethylene glycol and 2.5g of hexadecyl trimethyl ammonium bromide serving as surfactants, carrying out ultrasonic treatment for 30min, then starting stirring, simultaneously adding 50g of tetrabutyl titanate, heating to 130 ℃, reacting for 20hrs to prepare electrophoretic particles, cleaning to remove the solvent, cleaning with solvent castor oil, and dispersing in 90g of solvent castor oil.
Example 8
Preparing a two-color electrophoretic fluid, adjusting the solid content of the white electrophoretic particles of the embodiment 1 to 50%, and weighing BaSO4360g of electrophoretic particle suspension, namely adjusting the black electrophoretic particles in the embodiment 2 to have a solid content of 50%, weighing 130g of the carbon black electrophoretic particle suspension, adding the carbon black electrophoretic particle suspension into a mixer, weighing 4g of polyamide wax slurry with an electrorheological effect material, weighing 1.2g of ethoxylated nonylphenol sulfosuccinate half-ester disodium salt, 8g of alkyl alcohol polyoxyethylene ether and 10g of stabilizer polyvinylpyrrolidone, adding the mixture into the mixer, and uniformly stirring and dispersing the mixture to prepare the electrophoretic solution.
Example 9
Preparing a two-color electrophoretic fluid, adjusting the solid content of the electrophoretic particles obtained in the embodiment 3 to 40%, and weighing polyaniline/TiO2200g of electrophoretic particle suspension, namely adjusting the solid content of the black electrophoretic particles in the embodiment 2 to 40%, weighing 55g of carbon black electrophoretic particle suspension, adding the carbon black electrophoretic particle suspension into a mixer, weighing 0.6g of a charge control agent ethoxylated nonylphenol sulfosuccinate half-ester disodium salt, 4g of alkyl alcohol polyoxyethylene ether and 6g of a stabilizing agent polyvinylpyrrolidone, adding the mixture into the mixer, and stirring and dispersing the mixture uniformly to prepare an electrophoretic solution.
In conclusion, the beneficial effects of the invention are as follows: the electrorheological effect of the electrophoretic particles is a reverse electrorheological fluid principle, the reverse electrorheological fluid refers to that when materials with electrorheological effect added into an electrophoretic liquid system are in a non-conductive state, the added electrorheological materials have the capacity of forming a network structure through mutual physical crosslinking, so that a non-Newtonian fluid is formed, when the materials are in a conductive state, the electrophoretic particles impact the crosslinked network structure to be disconnected under the action of field intensity to form a Newtonian fluid, and the movement speed of the particles is increased by times along with the reduction of the viscosity of the electrophoretic liquid system. The shear stress is the integral characteristic of the electrophoretic fluid, the shear stress of the electrophoretic fluid is reduced along with the increase of an external electric field in the inverse current, the cost of various raw materials is saved by the method, and the bistable effect can be achieved under the condition of ensuring the response time of the electronic paper.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. An electrophoresis liquid with electrorheological effect is characterized in that: the electrophoresis liquid comprises electrophoresis particles, a solvent, a charge control agent, a stabilizer and at least one material with electrorheological effect, wherein in the electrophoresis liquid with electrorheological effect, the mass of the solvent accounts for 30-80% of the system, the mass of the electrophoresis particles accounts for 17-65% of the system, and the mass of the material with electrorheological effect, the charge control agent and the stabilizer accounts for 3-5% of the system.
2. The electro-rheological fluid of claim 1, wherein: the electrophoretic particles comprise a base material comprising one of the following compounds: TiO 22、Al2O3、BaSO4、Fe2O3、SiO2Carbon black, cobalt green, copper chromium black, calcium carbonate, organic red, organic blue, organic green or organic yellow, wherein the electrophoretic particles are prepared by the following steps:
s1, dispersing a base material in a first solvent, wherein the mass of the base material accounts for 2-60% of that of the first solvent, dispersing for 10-120min under the conditions of heating and stirring, then adding a second solvent and a modifier under the acidic or alkaline condition, and stirring for 30-500min to obtain a first reaction product;
s2, removing the solvent from the first reaction product, cleaning the first reaction product by using a third solvent, and dispersing the cleaned first reaction product into the third solvent, wherein the mass of the first reaction product is 20-80% of that of the third solvent, so as to obtain a second reaction product;
s3, placing the second reaction product under the conditions of sealing and oxygen resisting to perform rotary stirring at the rotating speed of 200-1000 rpm, and adding an organic monomer with at least one of the following groups: -CH2CH2-, -COOH, C-NH2, N-O, C-O, N-H, F-H, C-OH, C-NO2 or C-Cl; dissolving an initiator in the third solvent to obtain an initiator mixed solution, wherein the mass of the initiator is 3-10% of that of the third solvent, dropwise adding the initiator mixed solution under the condition that the heating temperature is 30-130 ℃, the dropwise adding time of the initiator mixed solution is 1-500min, and reacting for 5-130h after the dropwise adding is finished to obtain a third reaction product;
s4, cleaning the third reaction product by using the third solvent, then cleaning by using a fourth solvent, and obtaining a fourth reaction product after cleaning is finished; and dispersing the fourth reaction product in the fourth solvent to obtain electrophoretic particles, wherein the mass of the fourth reaction product is 5-60% of that of the fourth solvent.
3. The electro-rheological fluid of claim 2, wherein:
the first solvent is one of water, ethanol, methanol, n-butanol, toluene, xylene, dichloromethane and tetrachloroethylene;
the second solvent is one of water, ethanol, methanol, n-butanol, toluene, xylene, dichloromethane and tetrachloroethylene;
the third solvent is one of water, ethanol, butanol, benzene, toluene, xylene, trimethylbenzene, carbon tetrachloride, dichloromethane, tetrachloroethylene, an alkane solvent or an isoparaffin solvent;
the fourth solvent is one of water, ethanol, butanol, benzene, toluene, xylene, trimethylbenzene, carbon tetrachloride, dichloromethane, tetrachloroethylene, an alkane solvent, an isoparaffin solvent, simethicone, vinyl silicone oil or castor oil.
4. The electro-rheological fluid of claim 2, wherein: in the step S1, the modifier is a titanate coupling agent, an aluminate coupling agent, a silane coupling agent, a surfactant or an initiator; wherein:
the titanate coupling agents are: isopropyl trioleate titanate, isopropyl triisostearate titanate, diisopropyl di (acetylacetonate) titanate, isopropyl dioleate acyloxy (dioctylphosphonoyl) titanate or isopropyl tri (dioctylphosphonoyl) titanate;
the aluminate coupling agent is: isopropoxydistearoyloxyaluminate;
the silane coupling agents are: 3- (2-aminoethyl) -aminopropyltriethoxysilane, 2- (3, 4-epoxycyclopolyethyl) ethyldimethylsilane, 3- (N, N-dimethylaminopropyl) -aminopropylmethyldimethoxysilane, r-glycidyloxypropyltriethoxysilane, r-methacryloyloxytrimethoxysilane or r-glycidyloxypropyltrimethoxysilane;
the initiator is as follows: dibenzoyl peroxide, lauroyl peroxide, azobisisobutyronitrile, azobisisoheptonitrile, potassium persulfate, ammonium persulfate, or dimethyl azobisisobutyrate.
5. The electro-rheological fluid of claim 2, wherein: in step S3, the organic monomers are: at least one of methyl methacrylate, aniline, o-toluidine, lauryl methacrylate, octadecyl methacrylate, vinyl silicone oil and styrene; the initiator is at least one of dibenzoyl peroxide, lauroyl peroxide, azobisisobutyronitrile, azobisisoheptonitrile, potassium persulfate, ammonium persulfate and dimethyl azobisisobutyrate.
6. The electro-rheological fluid of claim 1, wherein:
the solvent is one of pure water, ethanol, butanol, benzene, toluene, xylene, trimethylbenzene, carbon tetrachloride, dichloromethane, tetrachloroethylene, alkane solvent or isoparaffin solvent, silicone oil, vegetable oil and castor oil;
the stabilizer is polyvinylpyrrolidone.
7. The electro-rheological fluid of claim 1, wherein: the material with electrorheological effect is at least one of inorganic nano-particles or high molecular oligomers such as hydrogenated castor oil, glycerol, polyamide wax powder, superfine kaolin, superfine silicon dioxide, polyisobutylene and the like;
the material with the electrorheological effect is a positive electrorheological material or a reverse electrorheological material;
the material with electrorheological effect comprises a long-chain, oleophilic organic segment and a short-chain functional segment, wherein the short-chain functional segment comprises at least one of-COO-, -NHCO-, -SO2 Cl-CH 2CH 2-.
8. The electrorheological fluid according to claim 1 wherein the charge control agent is at least one of a cationic surfactant, an anionic surfactant, a nonionic surfactant, or a zwitterionic surfactant;
the cationic surfactant is: octadecyl trimethyl ammonium chloride or N, N dimethyl dodecyl amine;
the anionic surfactant is: sodium dodecylbenzene sulfonate or sodium ethoxyethyl sulfate;
the nonionic surfactant is as follows: alkyl alcohol polyoxyethylene ether or alkylphenol polyoxyethylene ether;
the zwitterionic surfactant is as follows: ethoxylated nonylphenol sulfosuccinic acid half ester disodium salt or dodecyl dimethyl betaine.
9. An electro-rheological fluid having an electro-rheological effect as claimed in any one of claims 1-8 wherein: the electrophoresis liquid contains at least one electrophoresis particle.
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| CN201911012076.5A CN110703531A (en) | 2019-10-23 | 2019-10-23 | Electrophoresis liquid with electrorheological effect and preparation method thereof |
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