CN112175604B - Composite powder with multilayer coating structure, and preparation method and application thereof - Google Patents
Composite powder with multilayer coating structure, and preparation method and application thereof Download PDFInfo
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- CN112175604B CN112175604B CN201910597799.XA CN201910597799A CN112175604B CN 112175604 B CN112175604 B CN 112175604B CN 201910597799 A CN201910597799 A CN 201910597799A CN 112175604 B CN112175604 B CN 112175604B
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- microsphere matrix
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- 239000000843 powder Substances 0.000 title claims abstract description 95
- 239000002131 composite material Substances 0.000 title claims abstract description 62
- 239000011248 coating agent Substances 0.000 title claims abstract description 59
- 238000000576 coating method Methods 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000002096 quantum dot Substances 0.000 claims abstract description 116
- 239000004005 microsphere Substances 0.000 claims abstract description 94
- 239000011159 matrix material Substances 0.000 claims abstract description 68
- 239000010410 layer Substances 0.000 claims abstract description 66
- 229920000620 organic polymer Polymers 0.000 claims abstract description 65
- 239000000463 material Substances 0.000 claims abstract description 40
- 239000011247 coating layer Substances 0.000 claims abstract description 25
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 55
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 54
- 239000005033 polyvinylidene chloride Substances 0.000 claims description 40
- 229920001328 Polyvinylidene chloride Polymers 0.000 claims description 38
- 239000004793 Polystyrene Substances 0.000 claims description 36
- 229920002223 polystyrene Polymers 0.000 claims description 34
- 239000003292 glue Substances 0.000 claims description 31
- 239000000178 monomer Substances 0.000 claims description 31
- 239000007788 liquid Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 19
- 229920000642 polymer Polymers 0.000 claims description 19
- 238000000926 separation method Methods 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 12
- 229910052809 inorganic oxide Inorganic materials 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 10
- 239000002270 dispersing agent Substances 0.000 claims description 9
- 239000003999 initiator Substances 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 239000004800 polyvinyl chloride Substances 0.000 claims description 7
- 239000002033 PVDF binder Substances 0.000 claims description 6
- 239000004952 Polyamide Substances 0.000 claims description 6
- 239000004642 Polyimide Substances 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 6
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 6
- 229920002301 cellulose acetate Polymers 0.000 claims description 6
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 claims description 6
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 6
- 229920002647 polyamide Polymers 0.000 claims description 6
- 229920001721 polyimide Polymers 0.000 claims description 6
- 229920006124 polyolefin elastomer Polymers 0.000 claims description 6
- 239000011118 polyvinyl acetate Substances 0.000 claims description 6
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 6
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 6
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 6
- 239000004417 polycarbonate Substances 0.000 claims description 5
- 229920000515 polycarbonate Polymers 0.000 claims description 5
- 238000009777 vacuum freeze-drying Methods 0.000 claims description 5
- SHLSSLVZXJBVHE-UHFFFAOYSA-N 3-sulfanylpropan-1-ol Chemical compound OCCCS SHLSSLVZXJBVHE-UHFFFAOYSA-N 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 3
- COBLIZNSZVKDMR-UHFFFAOYSA-N furan-2,5-dione;octadec-1-ene Chemical compound O=C1OC(=O)C=C1.CCCCCCCCCCCCCCCCC=C COBLIZNSZVKDMR-UHFFFAOYSA-N 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims description 3
- 239000005416 organic matter Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- MJQWABQELVFQJL-UHFFFAOYSA-N 3-Mercapto-2-butanol Chemical compound CC(O)C(C)S MJQWABQELVFQJL-UHFFFAOYSA-N 0.000 claims description 2
- UGZAJZLUKVKCBM-UHFFFAOYSA-N 6-sulfanylhexan-1-ol Chemical compound OCCCCCCS UGZAJZLUKVKCBM-UHFFFAOYSA-N 0.000 claims description 2
- GRTOGORTSDXSFK-XJTZBENFSA-N ajmalicine Chemical compound C1=CC=C2C(CCN3C[C@@H]4[C@H](C)OC=C([C@H]4C[C@H]33)C(=O)OC)=C3NC2=C1 GRTOGORTSDXSFK-XJTZBENFSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 229910052793 cadmium Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- WQABCVAJNWAXTE-UHFFFAOYSA-N dimercaprol Chemical compound OCC(S)CS WQABCVAJNWAXTE-UHFFFAOYSA-N 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- 229910052738 indium Inorganic materials 0.000 claims description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 11
- 229910004298 SiO 2 Inorganic materials 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 238000002189 fluorescence spectrum Methods 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 5
- 238000006862 quantum yield reaction Methods 0.000 description 5
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 238000012512 characterization method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000001000 micrograph Methods 0.000 description 4
- 239000012299 nitrogen atmosphere Substances 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- SMZOGRDCAXLAAR-UHFFFAOYSA-N aluminium isopropoxide Chemical compound [Al+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SMZOGRDCAXLAAR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 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 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000593 microemulsion method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000010558 suspension polymerization method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
- C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/88—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing selenium, tellurium or unspecified chalcogen elements
- C09K11/881—Chalcogenides
- C09K11/883—Chalcogenides with zinc or cadmium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Luminescent Compositions (AREA)
- Led Device Packages (AREA)
Abstract
The application discloses composite powder with a multilayer coating structure, and a preparation method and application thereof. The composite powder comprises a microsphere matrix, a quantum dot material and a coating layer; the quantum dot material is buried and attached on the microsphere matrix to form a quantum dot/microsphere matrix; the coating layer is coated on the quantum dot/microsphere matrix; wherein the coating layer comprises at least one organic polymer layer. The fluorescent material maintains high quantum dot luminous efficiency, has the advantage of good weather resistance, and is an excellent fluorescent conversion material especially in a high-temperature and high-humidity environment.
Description
Technical Field
The application relates to composite powder with a multilayer coating structure, a preparation method and application thereof, and belongs to the technical field of lighting materials.
Background
The quantum dot material can effectively improve the display color gamut due to the optical properties of continuously adjustable luminescence peak position (ultraviolet to infrared), narrow half-peak width (4 eV) and the like, the advantage stimulates the development of the quantum dot in the display field, at the moment, the biggest problem of obstructing the application of the quantum dot is the stability problem of the quantum dot, the contact of the quantum dot with oxygen and moisture is reduced as much as possible, and the initial optical property of the quantum dot is kept as much as possible.
In the prior art, a microscopic coating strategy in which inorganic oxide is coated by taking quantum dots as units and a macroscopic coating strategy in which the quantum dots are embedded into a matrix block are used. The macroscopic cladding strategy often has the problems of self absorption, spectrum red shift, luminous efficiency reduction, limited application field of quantum dot blocks and the like caused by quantum dot aggregation, and the problems of stability reduction of the quantum dots and the like caused by block cracks. Compared with the prior art, the microscopic coating strategy takes each quantum dot as a unit, so that the aggregation of the quantum dots is avoided, the powder with high luminous efficiency is easy to prepare, the application field of the powder is wider, and the stability retention degree is higher.
However, the quantum dot microcosmic coated powder fluorescent quantum dot has low yield and low effective fluorescence intensity under high-temperature and high-humidity environment, and a better microcosmic packaging structure is still needed to improve the chemical stability of the quantum dot.
Disclosure of Invention
According to one aspect of the present application, there is provided a composite powder of a multi-layered clad structure, which maintains high quantum dot light emitting efficiency and has the advantage of good stability under high temperature and high humidity conditions, and is an excellent fluorescent conversion type material.
The composite powder with the multilayer coating structure comprises a microsphere matrix, a quantum dot material and a coating layer;
the quantum dot material is adsorbed in the microsphere matrix to form a quantum dot/microsphere matrix;
the coating layer is coated on the surface of the microsphere matrix;
wherein the coating layer comprises at least one organic polymer layer.
Optionally, the coating layer is an organic polymer layer.
Optionally, the coating layer is two organic polymer layers.
In particular, in the present application, it is preferable that the two organic polymer layers are different organic polymers.
Optionally, the coating layer is an organic polymer layer and an inorganic oxide layer;
Wherein, the surface of the microsphere matrix extends outwards to form an organic polymer layer and an inorganic oxide layer in sequence;
the inorganic oxide layer is selected from any one of silicon dioxide, aluminum oxide and titanium oxide.
Specifically, the organic polymer layer is an inner layer, directly coats the quantum dot/microsphere matrix, and the inorganic oxide layer is an outer layer, and coats the organic polymer layer.
The inorganic oxide layer is selected from the group consisting of oxides: silica (SiO 2), alumina (Al 2O3), and titanium oxide (TiO 2).
Optionally, the microsphere substrate is selected from at least one of silicone microspheres, silica microspheres, polymethyl methacrylate microspheres, polystyrene microspheres, and ferric oxide microspheres.
Specifically, the microsphere matrix size is 0.5-10 microns.
Optionally, the organic polymer layer is selected from at least one of polyvinyl chloride, polymethyl methacrylate, polyvinyl acetate, cellulose acetate, polyamide, polyimide, polycarbonate, polystyrene, polyvinylidene chloride, polyvinylidene fluoride, polyvinyl alcohol, transparent ABS plastic, polyacrylonitrile, polyolefin elastomer, thermoplastic polyurethane, and polyvinylcarbazole.
Specifically, the organic polymer layer is selected from polymers: at least one of polyvinyl chloride (PVC), polymethyl methacrylate (PMMA), polyvinyl acetate (PVAc), cellulose Acetate (CA), polyamide (PA), polyimide (PI), polycarbonate (PC), polystyrene (PS), polyvinylidene chloride (PVDC), polyvinylidene fluoride (PVDF), polyvinyl alcohol (PVA), transparent ABS plastic (ABS), polyacrylonitrile (PAN), polyolefin elastomer (POE), thermoplastic Polyurethane (TPU), polyvinylcarbazole (PVK).
Optionally, the quantum dot material is a quantum dot or a quantum dot modified by an organic matter;
The organic matter is at least one selected from 6-mercapto-1-hexanol, 2-mercapto-3-butanol, 3-mercapto-1-propanol, 2, 3-dimercaptopropanol and poly-octadecene-maleic anhydride.
Wherein the molecular weight of the poly-octadecene-maleic anhydride is xx-xx.
Optionally, the quantum dot is selected from at least one of a substance I with a chemical formula shown in a formula I, a substance II with a chemical formula shown in a formula II and a substance III with a chemical formula shown in a formula III;
AM type I
EFQ 2 type II
GHX 3 type III
Wherein A is selected from at least one of Cd, zn, pb, in;
M and Q are independently selected from at least one of S, se, te, P;
e is selected from at least one of Cu, ag and Zn;
F is selected from at least one of Al, ga and In;
G is selected from at least one of CH 3NH3、CH(NH)NH3 and Cs;
H is selected from at least one of Ag, sb, bi, pb, in, al;
X is selected from at least one of halogen;
The size of the quantum dot is 2-39 nm.
Optionally, the particle size of the composite powder of the multilayer coating structure is 1-20 microns.
Optionally, the solid content of the quantum dot material in the composite powder is 2-50 wt%.
According to still another aspect of the present application, there is provided a method for preparing the composite powder of the above-mentioned multilayer coating structure, comprising at least the steps of:
a) Heating a material containing a quantum dot material and a microsphere matrix to obtain a quantum dot/microsphere matrix;
b) And coating the coating layer on the surface of the microsphere matrix to obtain the composite powder.
Specifically, in the present application, the quantum dot material includes any one of quantum dots and quantum dots modified with organic substances.
In the present application, the preparation method of the quantum dot is a method commonly used in the art, and the present application is not strictly limited.
The preparation method of the quantum dot modified by the organic matters is not strictly limited. The following describes a better preparation method, the quantum dots and organic matters are dispersed in an organic solvent, the organic matters are heated for 1h at 120 ℃, and after solid-liquid separation, the quantum dots modified by the organic matters are obtained.
Optionally, in the step a), the mass ratio of the quantum dot material to the microsphere substrate is 1-10%.
Optionally, in step a), heating to 50-70 ℃; until the solvent in the mass has evaporated completely.
Optionally, the step b) includes:
b-1) carrying out solid-liquid separation on a mixture a containing the quantum dot/microsphere matrix and a first coating layer source to obtain a quantum dot/microsphere matrix/coating layer I;
b-2) carrying out solid-liquid separation on the mixture b containing the quantum dot/microsphere matrix/coating layer I and a second coating layer source to obtain a quantum dot/microsphere matrix/coating layer I/coating layer II;
wherein the first coating layer is from any one of an organic polymer glue solution and an organic polymer monomer;
the second coating layer is selected from any one of organic polymer glue solution, organic polymer monomer and inorganic oxide precursor.
Optionally, the organic polymer glue solution is at least one selected from polyvinyl chloride glue solution, polymethyl methacrylate glue solution, polyvinyl acetate glue solution, cellulose acetate glue solution, polyamide glue solution, polyimide glue solution, polycarbonate glue solution, polystyrene glue solution, polyvinylidene chloride glue solution, polyvinylidene fluoride glue solution, polyvinyl alcohol glue solution, transparent ABS plastic glue solution, polyacrylonitrile glue solution, polyolefin elastomer glue solution, thermoplastic polyurethane glue solution and polyvinyl carbazole glue solution.
Specifically, the solute in the polyvinyl chloride glue solution is polyvinyl chloride, and the solvent is any one of N, N-dimethylformamide, acetone, tetrahydrofuran and ethyl acetate.
Similarly, the solvent in the other organic polymer glue solution can be any one selected from N, N-dimethylformamide, acetone, tetrahydrofuran and ethyl acetate.
Optionally, the organic polymer monomer is selected from at least one of polyvinyl chloride monomer, polymethyl methacrylate monomer, polyvinyl acetate monomer, cellulose acetate monomer, polyamide monomer, polyimide monomer, polycarbonate monomer, polystyrene monomer, polyvinylidene chloride monomer, polyvinylidene fluoride monomer, polyvinyl alcohol monomer, transparent ABS plastic monomer, polyacrylonitrile monomer, polyolefin elastomer monomer, thermoplastic polyurethane monomer, and polyvinylcarbazole monomer.
Optionally, the inorganic oxide precursor is selected from any one of ethyl orthosilicate, aluminum isopropoxide, and tetrabutyl titanate.
Optionally, the step b) includes:
b-1) carrying out solid-liquid separation on a mixture a containing the quantum dot/microsphere matrix and the organic polymer glue solution to obtain a quantum dot/microsphere matrix/organic polymer layer I;
b-2) carrying out solid-liquid separation on the mixture b containing the quantum dot/microsphere matrix/organic polymer layer I and the organic polymer monomer to obtain a quantum dot/microsphere matrix/organic polymer layer I/organic polymer layer II;
Wherein the organic polymer layer I and the organic polymer layer II are different organic polymers.
Optionally, the mixture b further comprises an initiator and a dispersing agent.
Specifically, in the step b-2), the quantum dot/microsphere matrix/organic polymer layer I, the organic polymer monomer, the initiator and the dispersing agent are mixed at 55-70 ℃, and after centrifugal solid-liquid separation, the quantum dot/microsphere matrix/organic polymer layer I/organic polymer layer II is obtained.
Further, mixing in an inert atmosphere. For example, mixing in a nitrogen atmosphere.
Optionally, the step b) includes:
b-1) carrying out solid-liquid separation on a mixture a containing the quantum dot/microsphere matrix and the organic polymer monomer to obtain a quantum dot/microsphere matrix/organic polymer layer I;
b-2) carrying out solid-liquid separation on the mixture b containing the quantum dot/microsphere matrix/organic polymer layer I and the organic polymer glue solution to obtain a quantum dot/microsphere matrix/organic polymer layer I/organic polymer layer II;
Wherein the organic polymer layer I and the organic polymer layer II are different organic polymers.
Optionally, in the mixture a, an initiator and a dispersant are also included.
Specifically, in the step b-1), the quantum dot/microsphere matrix, the organic polymer monomer, the initiator and the dispersing agent are mixed at 55-70 ℃, and after centrifugal solid-liquid separation, the quantum dot/microsphere matrix/organic polymer layer I is obtained.
Further, mixing in an inert atmosphere. For example, mixing in a nitrogen atmosphere.
Optionally, the initiator is selected from any one of azoisobutyronitrile, benzoyl peroxide and potassium persulfate.
The dispersing agent is selected from any one of water, ethanol and methanol.
The following describes a preferred method for preparing the composite powder:
The method comprises the following steps:
dispersing a microsphere matrix and a quantum dot material in an organic solvent to obtain quantum dot@microsphere composite powder; mixing with polymer glue solution to obtain quantum dot@microsphere/polymer powder; and polymerizing the monomers to obtain the composite powder with the multilayer coating structure.
In particular:
1. dispersing quantum dot materials and microsphere matrixes in an organic solvent, and heating to 50-70 ℃; preserving heat for 22-26 h, allowing the quantum dot material to enter a microsphere matrix, and cleaning and drying the microsphere matrix after solid-liquid separation to obtain quantum dot/microsphere matrix powder;
2. Adding the quantum dot/microsphere matrix powder obtained in the step 1 into a polymer coating material glue solution, uniformly mixing, carrying out solid-liquid separation, and then cleaning and vacuum freeze-drying by using a poor solvent to obtain quantum dot/microsphere matrix/organic polymer layer I powder;
3. Mixing the powder of the quantum dot/microsphere matrix/organic polymer layer I obtained in the step 2 with a polymer coating material monomer, an initiator and a dispersing agent, heating and stirring (50-60 ℃ for 4-6 h), and cleaning and drying after solid-liquid separation to obtain the composite powder of the quantum dot/microsphere matrix/organic polymer layer I/organic polymer layer II, namely the multilayer coating structure.
Method II
Dispersing a microsphere matrix and a quantum dot material in an organic solvent to obtain quantum dot@microsphere composite powder; polymerizing the monomer to obtain quantum dot@microsphere/polymer powder; mixing with polymer glue solution to obtain the composite powder with the multilayer coating structure.
In particular:
1. dispersing quantum dot materials and microsphere matrixes in an organic solvent, and heating to 50-70 ℃; preserving heat for 22-26 h, allowing the quantum dot material to enter a microsphere matrix, and cleaning and drying the microsphere matrix after solid-liquid separation to obtain quantum dot/microsphere matrix powder;
2. Mixing the quantum dot/microsphere matrix powder obtained in the step 1 with a polymer coating material monomer, an initiator and a dispersing agent, heating and stirring (50-60 ℃ for 4-6 h), and cleaning and drying after solid-liquid separation to obtain quantum dot/microsphere matrix/organic polymer layer I powder;
3. And (3) adding the powder of the quantum dot/microsphere matrix/organic polymer layer I obtained in the step (2) into the polymer coating material glue solution, uniformly mixing, carrying out solid-liquid separation, and then washing and vacuum freeze-drying by using a poor solvent to obtain the powder of the quantum dot/microsphere matrix/organic polymer layer I/organic polymer layer II, namely the composite powder of the multilayer coating structure.
The composite powder with the multilayer coating structure provided by the application consists of a microsphere matrix and two transparent polymer coating materials, wherein the specific existence forms of the microsphere matrix and the two transparent polymer coating materials are shown in the figure 1, the quantum dots are embedded in the microsphere, and the quantum dot@microsphere is coated by at least two transparent polymers, so that the water and oxygen insulation effects are well achieved. Wherein the solid content of the quantum dots is 2-50 wt%.
The fluorescence quantum yield of the composite powder of the multilayer coating structure is about 70%, and after the composite powder is aged for 600 hours under the conditions of high temperature of 60 ℃ and high humidity of 90%, the fluorescence integration area is still maintained to be more than 80%.
According to still another aspect of the present application, the composite powder of a multilayer coating structure according to any one of the above-mentioned aspects, and the composite powder of a multilayer coating structure prepared according to any one of the above-mentioned methods are used in the field of illumination and the field of display.
Specifically, the composite powder based on the multilayer coating structure is used for illumination and display.
According to still another aspect of the present application, there is provided a display device including a light guide plate, a chip, and a composite powder of a multi-layered clad structure;
The chip is positioned at the side of the light guide plate;
the composite powder with the multilayer coating structure comprises any one of the composite powder with the multilayer coating structure and the composite powder with the multilayer coating structure prepared by the method according to any one of the above.
Optionally, the composite powder of the multilayer coating structure is attached to the surface of the chip facing the light guide plate.
Specifically, the composite powder is attached to the surface of the chip facing the light guide plate, so as to form a patch type packaging backlight structure.
Optionally, the composite powder of the multilayer coating structure is attached to the side of the light guide plate facing the chip.
Specifically, the composite powder is attached to the side surface of the light guide plate, which faces the chip, to form a side-tube type packaging backlight structure.
The application has the beneficial effects that:
1) The composite powder with the multilayer coating structure maintains high quantum dot luminous efficiency, has the advantage of good weather resistance, and is an excellent fluorescent conversion material especially in a high-temperature and high-humidity environment.
2) The composite powder with the multilayer coating structure overcomes the defects of single coating material and poor stability of the quantum dot composite material in the prior art, and overcomes the defect that a quantum dot block is difficult to integrate.
3) The application provides a powder light guide material, which can be directly adhered to the side surface of a chip or a light guide plate of a display device, thereby greatly reducing the dosage of quantum dots in the composite powder and greatly saving the cost.
4) The preparation method of the composite powder provided by the application can improve the stability of the quantum dot under the conditions of high temperature and high humidity while maintaining the luminous efficiency of the quantum dot; the powder is directly applied to the surface mount package, so that the post-processing is convenient.
Drawings
Fig. 1 is a schematic structural diagram of a specific form of a substance in a composite powder with a multilayer coating structure according to an embodiment of the present application.
Fig. 2 is a schematic diagram of a preparation process of a composite powder with a multilayer coating structure according to an embodiment of the present application.
FIG. 3 is a scanning electron microscope image of QDs/PMMA and QDs/PMMA/PVDC samples of example 1 of the present application.
FIG. 4 is a transmission electron microscope image of QDs/PMMA, QDs/PMMA/PVDC and QDs@PMMA/PVDC/PS samples of example 1 of the present application.
FIG. 5 is a fluorescence spectrum of QDs/PMMA/PVDC/PS samples prepared in example 1.
FIG. 6 is a fluorescence spectrum of QDs/PS/PVDC/PMMA samples prepared in example 2.
FIG. 7 is a graph showing the change in fluorescence intensity during aging of the product of each coating stage in example 1 at 60℃and 90% humidity.
Fig. 8 is a schematic diagram of a chip-on-package backlight structure.
Fig. 9 is a schematic diagram of a side-tube package backlight structure.
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 indicated, all starting materials in the examples of the present application were purchased commercially.
Microsphere matrices were produced by Plaskolite West and polymers were purchased from Bayer and Sigma Germany.
The particle size of the microsphere matrix is 0.5-10 microns.
Quantum dots use references: wan Ki Bae, et al chem. Mater.2008,20, 531-539.
The analysis method in the embodiment of the application is as follows:
And carrying out morphology characterization on the composite powder of the multilayer coating structure by using a Hitachi S-4800 scanning electron microscope and a Japanese electron JEM-2100F transmission electron microscope.
And (3) carrying out fluorescence spectrum characterization on the composite powder with the multilayer coating structure by using an Shanghai compound optical PG2000-Pro back-illuminated spectrometer and a Binsong optical C9920 absolute quantum yield measuring instrument.
Fluorescence quantum yield testing was performed using a C9920-02 absolute quantum efficiency meter produced by Hamamastu.
Example 1
Preparation of sample QDs/PMMA/PVDC/PS
0.5G of micron-sized polymethyl methacrylate (PMMA) microspheres are placed into n-hexane, heated in a water bath kettle at 60 ℃ for 24 hours to completely evaporate the solvent, 10mL of gradient alloy quantum dot Cd xZn1-xSeyS1-y (QDs) solution is added for 5mg/mL, and the temperature is kept for 10 hours. And slowly evaporating the solvent, cleaning the quantum dots on the surfaces of the microspheres after the solution is evaporated, and drying to obtain the QDs/PMMA microspheres.
Adding the QDs/PMMA microspheres into N, N-Dimethylformamide (DMF) solution of polyvinylidene chloride (PVDC) (polymerization degree is 2000), stirring, centrifuging at high speed, adding N-hexane, stirring at high speed, and vacuum freeze drying to obtain loose QDs/PMMA/PVDC powder.
Finally, the QDs/PMMA/PVDC is coated with Polystyrene (PS) by a suspension polymerization method. 30mg of QDs/PMMA/PVDC powder, 5mL of methanol, 180mg of styrene monomer, 66mg of polyvinylpyrrolidone and 5.4mg of azoisobutyronitrile are taken, heated and stirred for 5 hours at 55 ℃ in nitrogen atmosphere, and centrifuged to obtain QDs/PMMA/PVDC/PS powder, which is marked as sample No. 1.
Example 2
Preparation of sample QDs/PS/PVDC/PMMA
The preparation process of the sample QDs/PS/PVDC/PMMA was similar to that of example 1, except that the PMMA microspheres were changed to PS microspheres, and the PS coating layer was changed to radical polymerization to form a PMMA layer, otherwise the same as in example 1. The polymerization method of the PMMA layer comprises the following steps: 2nmol of QDs/PS/PVDC,1g of Methyl Methacrylate (MMA), 0.01g of azoisobutyronitrile, 5mL of methanol were added, stirred at 70℃for 12 hours, washed three times with ethanol, and dried by centrifugation to obtain QDs/PS/PVDC/PMMA powder, designated as sample # 2.
Example 3
Preparation of sample QDs/SiO 2/PVDC/PS
The preparation process of the sample QDs/SiO 2/PVDC/PS was similar to that of example 1, except that PMMA microspheres were changed to SiO 2 microspheres, and QDs/SiO 2/PVDC/PS powder was obtained as sample # 3 in the same manner as in example 1.
Example 4
Preparation of sample QDs/PMMA/PVDC/SiO 2
The preparation process of the sample QDs/PMMA/PVDC/SiO 2 was similar to that of example 1, except that the process of forming the PS coating layer by the radical was changed to the reverse microemulsion method to form the SiO 2 layer, otherwise the same as in example 1. The SiO 2 layer comprises the following specific steps: 2nmol of QDs/PMMA/PVDC powder was dispersed in a mild solution of 100. Mu.L of chloroform and 1mL of cyclohexane, 80. Mu.L of tetraethyl orthosilicate (TEOS), 150. Mu.L of aqueous ammonia was added, stirred at a rotation speed of 800r/min for 15min, allowed to stand at room temperature for 5 days in the dark, followed by washing with 3mL of ethanol, and centrifugal drying to obtain QDs/PMMA/PVDC/SiO 2 powder, designated as sample # 4.
Example 5
Preparation of sample QDs/PS/PVDC/PMMA
The preparation of the sample QDs/PS/PVDC/PMMA differs from example 1 in that: in this embodiment, the surface of the quantum dot is coated with a polymer by monomer polymerization, and then coated with a second layer of glue.
Preparation of sample QDs/PMMA/PS/PVDC
The preparation of sample QDs/PMMA/PS/PVDC differs from example 1 in that: in this embodiment, the surface of the quantum dot is coated with a polymer by monomer polymerization, and then coated with a second layer of glue.
The preparation method of the QDs/PMMA microspheres is the same as that of the embodiment 1, and is not repeated here;
And coating PS outside the QDs/PMMA microsphere. 20mg of QDs/PMMA powder, 5mL of methanol, 180mg of styrene monomer, 66mg of polyvinylpyrrolidone and 5.4mg of azoisobutyronitrile are taken, heated and stirred for 5 hours at 55 ℃ in nitrogen atmosphere, and centrifuged to obtain QDs/PMMA/PS powder.
100Mg of QDs/PMMA/PS powder was added to 300mg/mL of PVDC-DMF gum solution, stirred, centrifuged at high speed, added with n-hexane, stirred at high speed, and lyophilized in vacuo to give loose QDs/PMMA/PS/PVDC powder, designated sample # 5.
Example 6 Performance test
And respectively carrying out morphology characterization on samples 1# to 5#
The characterization result shows that the particle size of the composite powder with the multilayer coating structure is several to tens of micrometers.
As is typically represented by sample No. 1, FIG. 3 is a scanning electron microscope image of QDs/PMMA and QDs/PMMA/PVDC samples, FIG. 4 is a transmission electron microscope image of QDs/PMMA, QDs/PMMA/PVDC and QDs/PMMA/PVDC/PS samples, and it can be seen from FIGS. 3 and 4 that the particle size of QDs/PMMA/PVDC/PS samples is from tens of micrometers to tens of micrometers.
And after the quantum dot microsphere is subjected to multi-layer coating, the size of the quantum dot microsphere is increased by a few micrometers.
Fluorescence spectrum tests were performed on samples 1# to 5# respectively. As shown in FIGS. 5 and 6, FIG. 5 is a fluorescence spectrum of the QDs/PMMA/PVDC/PS sample prepared in example 1, FIG. 6 is a fluorescence spectrum of the QDs/PS/PVDC/PMMA sample prepared in example 2, and it can be seen from FIGS. 5 and 6 that the fluorescence spectrum position is red shifted by 3 to 4nm.
The fluorescence quantum yield tests were carried out on samples 1# to 5# respectively, and as represented by sample 1#, the test results showed that the fluorescence quantum yield was reduced from 85% to 70%.
The weather resistance test is carried out on the products of each coating stage in sample No.1 respectively, and the test results are shown in FIG. 7, and as can be seen from FIG. 7, the stability of the multi-layer structure composite powder is greatly improved under the conditions of high temperature (60 ℃) and high humidity (90%), after aging for 630 hours, the fluorescence intensity of the pure quantum dot samples is reduced to 75%, the fluorescence intensities of the QDs/PMMA/PVDC and QDs/PMMA/PVDC/PS samples are still kept to be more than 80%, and the fluorescence intensities are respectively kept to 93% and 86%.
Example 7
The quantum dot multilayer composite powder with high-temperature and high-humidity stability is suitable for being applied to backlight display, and as shown in fig. 8, the composite powder with the multilayer coating structure is adhered on a chip by being mixed with silica gel.
In the embodiment, the composite powder is only adhered to the chip, so that the consumption of the composite powder is reduced, and the practical cost is greatly reduced. The chip-mounted integration of the light-emitting diode with good stability is facilitated.
Example 8
The quantum dot multilayer composite powder with high-temperature and high-humidity stability is suitable for being applied to backlight display, and as shown in fig. 9, the composite powder with the multilayer coating structure is adhered to the side surface of the light guide plate by being mixed with silica gel.
In the embodiment, the composite powder is only adhered to the side surface of the light guide plate, so that the consumption of the composite powder is reduced, and the practical cost is greatly reduced. The side tube type integration of the light-emitting diode with good stability is facilitated.
While the application has been described in terms of preferred embodiments, it will be understood by those skilled in the art that various changes and modifications can be made without departing from the scope of the application, and it is intended that the application is not limited to the specific embodiments disclosed.
Claims (13)
1. The preparation method of the composite powder with the multilayer coating structure is characterized by at least comprising the following steps:
a) Heating a material containing a quantum dot material and a microsphere matrix to obtain a quantum dot/microsphere matrix; b) Coating the surface of the microsphere matrix with a coating layer to obtain the composite powder;
The step b) comprises the following steps: adding the quantum dot/microsphere matrix powder obtained in the step a) into a polymer coating material glue solution, uniformly mixing, carrying out solid-liquid separation, and then washing and vacuum freeze-drying by using a poor solvent to obtain the quantum dot/microsphere matrix/organic polymer layer I powder; mixing the obtained powder of the quantum dot/microsphere matrix/organic polymer layer I with a polymer coating material monomer, an initiator and a dispersing agent, heating and stirring for 4-6 hours at 50-60 ℃, and carrying out solid-liquid separation to obtain a quantum dot/microsphere matrix/organic polymer layer I/organic polymer layer II, namely a composite powder with a multilayer coating structure;
Or alternatively, the first and second heat exchangers may be,
The step b) comprises the following steps: mixing the quantum dot/microsphere matrix powder obtained in the step a) with a polymer coating material monomer, an initiator and a dispersing agent, heating and stirring, wherein the heating and stirring conditions are 50-60 ℃, the heating and stirring time is 4-6 hours, and cleaning and drying after solid-liquid separation to obtain quantum dot/microsphere matrix/organic polymer layer I powder; adding the obtained powder of the quantum dot/microsphere matrix/organic polymer layer I into a polymer coating material glue solution, uniformly mixing, carrying out solid-liquid separation, and then cleaning and vacuum freeze-drying by using a poor solvent to obtain the powder of the quantum dot/microsphere matrix/organic polymer layer I/organic polymer layer II, namely the composite powder of a multilayer coating structure;
the composite powder comprises a microsphere matrix, a quantum dot material and a coating layer;
The quantum dot material is adsorbed in the microsphere matrix to form a quantum dot/microsphere matrix; the coating layer is coated on the surface of the microsphere matrix; wherein the coating layer comprises at least one organic polymer layer;
the microsphere matrix is at least one selected from organosilicon microspheres, silicon dioxide microspheres, polymethyl methacrylate microspheres, polystyrene microspheres and ferric oxide microspheres.
2. The method of claim 1, wherein the coating is an organic polymer layer.
3. The method of claim 1, wherein the coating is a two-layer organic polymer.
4. The method of claim 3, wherein the coating layer is an organic polymer layer and an inorganic oxide layer; wherein, the surface of the microsphere matrix extends outwards to form an organic polymer layer and an inorganic oxide layer in sequence; the inorganic oxide layer is selected from any one of silicon dioxide, aluminum oxide and titanium oxide.
5. The method according to claim 1, wherein the organic polymer is at least one selected from the group consisting of polyvinyl chloride, polymethyl methacrylate, polyvinyl acetate, cellulose acetate, polyamide, polyimide, polycarbonate, polystyrene, polyvinylidene chloride, polyvinylidene fluoride, polyvinyl alcohol, transparent ABS plastic, polyacrylonitrile, polyolefin elastomer, thermoplastic polyurethane, and polyvinylcarbazole.
6. The method of claim 1, wherein the quantum dot material is a quantum dot or an organic modified quantum dot; wherein the organic matter is at least one selected from 6-mercapto-1-hexanol, 2-mercapto-3-butanol, 3-mercapto-1-propanol, 2, 3-dimercaptopropanol and poly-octadecene-maleic anhydride.
7. The method according to claim 6, wherein the quantum dot is at least one selected from the group consisting of a substance I having a chemical formula shown in formula I, a substance II having a chemical formula shown in formula II, and a substance III having a chemical formula shown in formula III;
AM type I
EFQ 2 type II
GHX 3 type III
Wherein A is selected from at least one of Cd, zn, pb, in; m and Q are independently selected from at least one of S, se, te, P; e is selected from at least one of Cu, ag and Zn; f is selected from at least one of Al, ga and In; g is selected from at least one of CH 3NH3、CH(NH)NH3 and Cs; h is selected from at least one of Ag, sb, bi, pb, in, al; x is selected from at least one of halogen; the size of the quantum dot is 2-39 nm.
8. The method according to claim 1, wherein in step a), the mass ratio of the quantum dot material to the microsphere matrix is 1 to 10%.
9. The process according to claim 1, wherein in step a) the heating is carried out to a temperature of 50 to 70 ℃ until the solvent in the mass has evaporated completely.
10. Use of the composite powder of a multilayer coating structure prepared by the method of any one of claims 1 to 9 in the field of illumination and display.
11. A display device is characterized by comprising a light guide plate, a chip and composite powder with a multilayer coating structure; the chip is positioned at the side of the light guide plate; the composite powder of the multilayer coating structure comprises any one of the composite powder of the multilayer coating structure prepared by the method according to any one of claims 1 to 9.
12. The display device according to claim 11, wherein the composite powder of the multilayer cladding structure is attached on a surface of the chip facing the light guide plate.
13. The display device according to claim 11, wherein the composite powder of the multilayer cladding structure is attached on a side of the light guide plate facing the chip.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102492428A (en) * | 2011-11-22 | 2012-06-13 | 无锡中德伯尔生物技术有限公司 | Uniform fluorescent microball and preparation method |
| CN102565921A (en) * | 2012-02-16 | 2012-07-11 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module and liquid crystal display device |
| CN104880759A (en) * | 2015-05-19 | 2015-09-02 | 武汉华星光电技术有限公司 | Backlight unit and display apparatus |
| CN105778887A (en) * | 2014-12-22 | 2016-07-20 | Tcl集团股份有限公司 | Quantum dot sealing method, quantum dot compound particle and applications |
| CN106147749A (en) * | 2016-06-27 | 2016-11-23 | 江门职业技术学院 | Fluorescent microsphere be assembled into photonic crystal, and its preparation method and application |
| CN107505769A (en) * | 2017-08-15 | 2017-12-22 | 京东方科技集团股份有限公司 | Backing structure and display device |
| CN107828416A (en) * | 2017-10-26 | 2018-03-23 | 南方科技大学 | A kind of quantum dot fluorescence composite and its preparation method and application |
| CN109370562A (en) * | 2017-02-22 | 2019-02-22 | 苏州星烁纳米科技有限公司 | The quantum dot microsphere and preparation method thereof of hydrotalcite cladding |
| CN109652061A (en) * | 2019-01-28 | 2019-04-19 | 广东普加福光电科技有限公司 | A kind of quantum dot/polymer microballoon composite material, preparation method and application |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0916700D0 (en) * | 2009-09-23 | 2009-11-04 | Nanoco Technologies Ltd | Semiconductor nanoparticle-based materials |
| CN105219373B (en) * | 2014-06-05 | 2019-06-25 | 中翰盛泰生物技术股份有限公司 | A kind of carrier granular and preparation method thereof |
-
2019
- 2019-07-04 CN CN201910597799.XA patent/CN112175604B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102492428A (en) * | 2011-11-22 | 2012-06-13 | 无锡中德伯尔生物技术有限公司 | Uniform fluorescent microball and preparation method |
| CN102565921A (en) * | 2012-02-16 | 2012-07-11 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module and liquid crystal display device |
| CN105778887A (en) * | 2014-12-22 | 2016-07-20 | Tcl集团股份有限公司 | Quantum dot sealing method, quantum dot compound particle and applications |
| CN104880759A (en) * | 2015-05-19 | 2015-09-02 | 武汉华星光电技术有限公司 | Backlight unit and display apparatus |
| CN106147749A (en) * | 2016-06-27 | 2016-11-23 | 江门职业技术学院 | Fluorescent microsphere be assembled into photonic crystal, and its preparation method and application |
| CN109370562A (en) * | 2017-02-22 | 2019-02-22 | 苏州星烁纳米科技有限公司 | The quantum dot microsphere and preparation method thereof of hydrotalcite cladding |
| CN107505769A (en) * | 2017-08-15 | 2017-12-22 | 京东方科技集团股份有限公司 | Backing structure and display device |
| CN107828416A (en) * | 2017-10-26 | 2018-03-23 | 南方科技大学 | A kind of quantum dot fluorescence composite and its preparation method and application |
| CN109652061A (en) * | 2019-01-28 | 2019-04-19 | 广东普加福光电科技有限公司 | A kind of quantum dot/polymer microballoon composite material, preparation method and application |
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|---|---|
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