CN107857487A - A kind of preparation method of dopamine modified glass-fiber composite nitride aluminium - Google Patents
A kind of preparation method of dopamine modified glass-fiber composite nitride aluminium Download PDFInfo
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- CN107857487A CN107857487A CN201711079221.2A CN201711079221A CN107857487A CN 107857487 A CN107857487 A CN 107857487A CN 201711079221 A CN201711079221 A CN 201711079221A CN 107857487 A CN107857487 A CN 107857487A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/70—Cleaning, e.g. for reuse
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/12—General methods of coating; Devices therefor
- C03C25/16—Dipping
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/48—Coating with two or more coatings having different compositions
- C03C25/54—Combinations of one or more coatings containing organic materials only with one or more coatings containing inorganic materials only
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/0666—Polycondensates containing five-membered rings, condensed with other rings, with nitrogen atoms as the only ring hetero atoms
- C08G73/0672—Polycondensates containing five-membered rings, condensed with other rings, with nitrogen atoms as the only ring hetero atoms with only one nitrogen atom in the ring
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/08—Ingredients agglomerated by treatment with a binding agent
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Abstract
The invention belongs to Material Field, it is related to a kind of preparation method of the modified glass-fiber with high-termal conductivity, more particularly to a kind of preparation method of dopamine modified glass-fiber composite nitride aluminium, glass fibre carries out surface through aqueous dopamine solution and is modified to form poly-dopamine coating, is then modified aluminium nitride suspension to fiberglass surfacing with spray gun spraying.The advantage of the invention is that：(1) fiberglass surfacing is modified by dopamine, improves the adhesion between glass fibre and other interfaces, so as to by the adhesion of dopamine in fiberglass surfacing composite nitride aluminium, to improve the thermal conductivity of glass fibre；(2) aluminium nitride powder is carried out anti-hydrolyzed modified, avoids aluminium nitride powder from hydrolyzing to form alumina layer in adition process, influence its heat conductivility；(3) integrated artistic route is simple, low to reaction condition and equipment requirement degree, suitable for industrialized production.
Description
Technical field
The invention belongs to Material Field, is related to a kind of preparation method of the modified glass-fiber with high-termal conductivity, specifically
It is related to a kind of preparation method of dopamine modified glass-fiber composite nitride aluminium.
Background technology
Glass fibre (GF) is a kind of inorganic filler of one-dimentional structure, and main component is aluminum oxide, calcium oxide, silica etc.
Oxide, using the inorganic matters such as silica or discarded glass ball as raw material, through melting, drawing under the condition of high temperature more than 1000 DEG C
Silk, oil, boundling, the technique such as drying are prepared.Glass fibre in addition to excellent mechanical property, also with high temperature resistant,
Electric insulation, corrosion-resistant, moisture absorption is low, a series of anti-oxidant, elongation performances better than other artificial macromolecular fibres such as small, when itself plus
When entering to polymeric matrix, it can effectively undertake stress and load as skeleton, so as to significantly improve polymer matrix
The mechanical property and heat resistance of body.For example with glass heat-conducting silica gel sheet be exactly the composite containing glass fibre, it is a kind of high
Property high tensile ultrathin Heat Conduction Material, using ripple it is fine after toughness of products it is good, solid, strengthen high shear strength, but glass
Fine incorporation is too high, then can influence toughness, and impact resistance weakens, and can also have a strong impact on the thermal conductivity of material, if
Glass incorporation is too low, then can not meet suitable physical property again.Therefore, glass fibre is modified in itself, makes its tool
There is certain thermal conductivity, while meet the requirement of the physical property required for the compound Heat Conduction Material of glass fibre and thermal conductivity.
In nature, marine mussel binding proteins contain a kind of substantial amounts of special amino acid and are referred to as 3,4- dihydroxy
Phenylalanine, i.e. dopamine (DOPA), great pass is caused due to mussel can be made to adhere to the magical ability on various surfaces
Note.Dopamine can polymerize to form poly-dopamine coating under aerobic alkaline aqueous environment in material surface spontaneous oxidation.DOPA
The mode of oxidation auto polymerization occurs for amine, is that catechol contained in dopamine is oxidized to benzoquinones first, then proceed to amine and its
He generates poly-dopamine coating at the reaction of catechol quinones.The catechol and quinone of poly-dopamine coating are functional group, to a variety of materials
Material all has the ability being covalently attached, and reaction condition is simple, it is not necessary to carries out any surface preparation to carrier in advance.For
Dopamine is to the study on the modification of material surface, and nowadays great mass of data is recorded, such as by deposit dopamine in polyethylene, gather
The microporous barrier surface of the materials such as vinylidene, polytetrafluoroethylene (PTFE), the surface hydrophilicity of hydrophobic polymer film can obtain significantly
Improve, and by selecting suitable reaction condition, be improved membrane flux.The material such as modified PE, PTEF leads to for another example
Cross and reacted using the oxidation auto polymerization of poly-dopamine, the compatibility between modified material surface and Gegenbaur's cell substantially improves.
Aluminium nitride has high thermal conductivity still reachable for monocrystalline, its theoretical value 320W/ (mK), its actual value because of it
100~280W/ (mK), 5~10 times equivalent to aluminum oxide, also there is high intensity, high specific insulation, high insulation is pressure-resistant,
Low-dielectric loss, thermal coefficient of expansion such as match at the good characteristic with silicon, it has also become current most promising high heat-conducting ceramic of new generation
Electric substrate and encapsulating material.
Patent 106349697A discloses a kind of glass-fiber reinforced high heat conduction silicon rubber thermal interface materials of LED, by
The raw material composition of following parts by weight：55 70 parts of silicone rubber matrix, 22 32 parts of aluminium nitride, 1626 parts of dopamine, 20mmol/L's
2035 parts of silver nitrate solution, 13 parts of hydroxy silicon oil, double 2,525 parts of vulcanizing agents, appropriate deionized water, Tris HCl cushioning liquid
In right amount, 13 parts of VTES, 6 13 parts of glass fibre, 26 parts of hollow glass micropearl.The present invention uses dopamine
The poly-dopamine layer of close attachment is formed in aln surface oxidation polymerization, while in the poly-dopamine layer surface of cladding aluminium nitride
Nano silver grain is loaded, filled silicon rubber is compounded, improves the high heat conduction heat dispersion of silicon rubber thermal interface material, while have good
Good compliance, tearing strength and electrical insulation capability.Make referrals in that patent, the poly- of close attachment is formed in aln surface
DOPA amine layer, effectively prevents aluminium nitride from hydrolyzing, and ensures the excellent thermal conductivity of aluminium nitride, improves silicon rubber thermal interface material
High heat conduction heat dispersion.But understood through theoretical and practical operation, it can not realize at all herein, because the hydrolysis of aluminium nitride
Rapidly, and dopamine spontaneous oxidation polymerize to form poly-dopamine layer and then need more than ten to twenties hours, and now aluminium nitride has been
Through being hydrolyzed, aln surface can form alumina layer, and checking influences the thermal conductivity of aluminium nitride.In addition, the patent does not have yet
There is the heat conduction to glass fibre to be modified and any enlightening significance is provided.
The content of the invention
For above the deficiencies in the prior art, the present invention proposes a kind of system of dopamine modified glass-fiber composite nitride aluminium
Preparation Method, modification is entered to fiberglass surfacing using dopamine, so as to adhere to aluminium nitride particulate, leading for glass fibre is improved with this
It is hot.
A kind of preparation method of dopamine modified glass-fiber composite nitride aluminium of the present invention, it is characterised in that：Glass
Glass fiber carries out surface through aqueous dopamine solution and is modified to form poly-dopamine coating, and it is suspended to be then modified aluminium nitride with spray gun spraying
Liquid is to fiberglass surfacing.
Wherein, preferred scheme is as follows：
The preparation method of described aqueous dopamine solution is：Dopamine is added to the more of 2g/L are configured in deionized water
Bar amine aqueous solution, is adjusted to 8.5 with Tris-HCl to its PH.
By pre-processing, described preprocess method is described glass fibre：By glass fibre in 500~600 DEG C of bars
1~2h is burnt under part, is then washed with deionized 2~3 times, drying for standby.The effect of pretreatment is by fiberglass surfacing
Organic matter and itself applicator remove.
Described glass fibre is alkali-free glass fibre, 12 μm~23 μm of diameter.
Described glass fibre carries out surface through aqueous dopamine solution and is modified to be formed in poly-dopamine coating step, glass fibers
Dimension is added to progress 24~36h of magnetic agitation in aqueous dopamine solution, is then cleaned by glass fiber filter and with deionized water,
Dried after cleaning under the conditions of 60~80 DEG C.
The preparation method of described modification aluminium nitride suspension is：Modified aluminium nitride powder is distributed in distilled water, surpassed
5~10min of sonication, form stable modification aluminium nitride suspension.
Described modification aluminium nitride powder is prepared in accordance with the following methods：Aluminium nitride powder is added in alcohol solvent and added
Enter the stearic acid of aluminium nitride powder quality 8~10%, after stirring stand 2~3h, add aluminium nitride powder quality 2~
3% Tween 80, stirs 3~5h under the conditions of 60~70 DEG C, and the aluminium nitride powder finally filtered out washs 2 with alcohol solvent~
3 times, modified aluminium nitride powder is produced after drying.Because aluminium nitride powder easily hydrolyzes, hydroxide can be formed with the hydroxyl in water
Aluminium, alumina layer being formed on aluminium nitride powder surface, aluminium nitride lattice dissolves in substantial amounts of oxygen, reduces its thermal conductivity, therefore to nitrogen
Change aluminium and carry out hydrolytic-resistant modified processing.
The average particle size particle size of described aluminium nitride powder is 1.50 μm.
The weight of described modification aluminium nitride powder is the 8~10% of glass fiber weight.
The advantage of the invention is that：(1) fiberglass surfacing is modified by dopamine, improves glass fibre and its
Adhesion between its interface, so as to by the adhesion of dopamine in fiberglass surfacing composite nitride aluminium, to improve glass fibers
The thermal conductivity of dimension；(2) aluminium nitride powder is carried out anti-hydrolyzed modified, avoids aluminium nitride powder from hydrolyzing to form oxygen in adition process
Change aluminium lamination, influence its heat conductivility；(3) integrated artistic route is simple, low to reaction condition and equipment requirement degree, suitable for industrialization
Production；(4) product that the present invention is prepared can be applied to have in desired material heat conduction, such as can be by this product application
It is extensive in the preparation of short-cut original silk silk felt, application prospect.
Brief description of the drawings
Fig. 1 is dopamine, simple glass fiber, the infrared spectrum comparison diagram of dopamine modified glass-fiber；
In figure：Doparnine represents dopamine, and D-GF represents dopamine modified glass-fiber, and GF represents simple glass fibre
Dimension.
Fig. 2 is the scanning electron microscope (SEM) photograph of simple glass fiber；
Fig. 3 is the scanning electron microscope (SEM) photograph of dopamine modified glass-fiber composite nitride aluminium.
Embodiment
The invention will be further described with reference to embodiments.
Embodiment 1：
From the alkali-free glass fibre between 12 μm~23 μm of diameter, glass fibre is burnt into 1h under the conditions of 600 DEG C, so
After be washed with deionized 3 times, drying for standby.Dopamine is added to be configured in deionized water 2g/L dopamine it is water-soluble
Liquid, its PH is adjusted to 8.5 with Tris-HCl.Pretreated glass fibre is added in aqueous dopamine solution and carried out
Magnetic agitation 24h, then cleaned by glass fiber filter and with deionized water, dry under the conditions of 60 DEG C after cleaning and can obtain
Dopamine modified glass-fiber.
By dopamine modified glass-fiber and dopamine, simple glass fiber utilization Fourier's In situ ATR-FTIR to it
Composition is analyzed, and infrared spectrum is as shown in Figure 1.In figure, the infrared spectrogram peak of dopamine is relatively more and relatively more sharp, tool
There is typical small molecule structure chromatogram characteristic, in 3000cm-1-3400cm-1Can be observed in region occur absworption peak peak shape compared with
Width, caused by this is due to intermolecular formed hydrogen bond.And influenceed by O-H asymmetric stretching vibration, it can be seen that
3345cm-1, 3218cm-1, 3041cm-1, 2959cm-1Occurs uneven peak Deng position.Due to N-H also be present in dopamine
Key, therefore in 3200cm-1And 2250cm-1Between there is stretching vibration absworption peak, positioned at 2434cm-1, 2541cm-1, 2641cm-1
And 2722cm-1Deng position.The spectral line of dopamine modified glass-fiber is observed, in 3000cm in figure-1-3400cm-1Peak is bright in region
It is aobvious to weaken, 2434cm-1, 2541cm-1, 2641cm-1And 2722cm-1Peak Deng position disappears, and shows NH2Scissoring vibration intensity goes out
Now significantly weaken, the peak region trend that also oriented high frequency region gradually moves, indicate NH2Disappearance, in addition,
1618cm-1Contrasting with DOPA amine monomers spectral line occurs in the peak at place, it is likely that comes from C in the indole structure contained by poly-dopamine
=C stretching vibration peak, 1503cm-1The peak of appearance is the stretching vibration peak of C=N in quinonyl and phenyl, and this all illustrates dopamine
Monomer is by aoxidizing auto polymerization reaction generation poly-dopamine coating.
Embodiment 2：
The aluminium nitride powder that average particle size particle size is 1.50 μm is added in alcohol solvent and adds aluminium nitride powder matter
The stearic acid of amount 10%, stands 2h after stirring, adds the Tween 80 of aluminium nitride powder quality 3%, under the conditions of 60 DEG C
4h is stirred, the aluminium nitride powder finally filtered out is washed 3 times with alcohol solvent, and modified aluminium nitride powder is produced after drying.It will account for
The modification aluminium nitride powder of glass fiber weight 8% is distributed in distilled water, supersonic oscillations 10min, forms stable modification
Aluminium nitride suspension.Then the dopamine modified glass-fiber prepared with spray gun spraying modification aluminium nitride suspension to embodiment 1
Surface, it is noted that spraying is uniform in spraying process, glass fibre can be stirred by other aids or equipment.
As shown in Figures 2 and 3, after modified aluminium nitride powder is compounded in fiberglass surfacing, glass fibre is changed
Surface topography, it is clear that fiberglass surfacing becomes coarse from Fig. 3, indicates modified aluminium nitride powder and pass through
The cohesive force of dopamine has been attached to fiberglass surfacing.In addition, coarse surface is also beneficial to glass fibre and other polymer
It is compound, improve adhesion between the two.
Embodiment 3：
The aluminium nitride powder that average particle size particle size is 1.50 μm is added in alcohol solvent and adds aluminium nitride powder matter
The stearic acid of amount 10%, stands 2h after stirring, adds the Tween 80 of aluminium nitride powder quality 3%, under the conditions of 60 DEG C
4h is stirred, the aluminium nitride powder finally filtered out is washed 3 times with alcohol solvent, and modified aluminium nitride powder is produced after drying.It will account for
The modification aluminium nitride powder of glass fiber weight 9% is distributed in distilled water, supersonic oscillations 10min, forms stable modification
Aluminium nitride suspension.Then the dopamine modified glass-fiber prepared with spray gun spraying modification aluminium nitride suspension to embodiment 1
Surface, it is noted that spraying is uniform in spraying process, glass fibre can be stirred by other aids or equipment.
Embodiment 4：
The aluminium nitride powder that average particle size particle size is 1.50 μm is added in alcohol solvent and adds aluminium nitride powder matter
The stearic acid of amount 10%, stands 2h after stirring, adds the Tween 80 of aluminium nitride powder quality 3%, under the conditions of 60 DEG C
4h is stirred, the aluminium nitride powder finally filtered out is washed 3 times with alcohol solvent, and modified aluminium nitride powder is produced after drying.It will account for
The modification aluminium nitride powder of glass fiber weight 10% is distributed in distilled water, supersonic oscillations 10min, forms stable modification
Aluminium nitride suspension.Then the dopamine modified glass-fiber prepared with spray gun spraying modification aluminium nitride suspension to embodiment 1
Surface, it is noted that spraying is uniform in spraying process, glass fibre can be stirred by other aids or equipment.
Test case：
Determination of conductive coefficients is carried out to embodiment 2,3,4 using DRE-2C heat conduction coefficient testers, it is as a result as follows：
| Thermal conductivity factor W/ (mK) | |
| Embodiment 2 | 0.604 |
| Embodiment 3 | 0.613 |
| Embodiment 4 | 0.621 |
| Simple glass fiber | 0.035 |
Claims (9)
- A kind of 1. preparation method of dopamine modified glass-fiber composite nitride aluminium, it is characterised in that：Glass fibre is through dopamine The aqueous solution carries out surface and is modified to form poly-dopamine coating, is then modified aluminium nitride suspension to glass fibers dimension table with spray gun spraying Face.
- 2. a kind of preparation method of dopamine modified glass-fiber composite nitride aluminium according to claim 1, its feature exist It is in the preparation method of described aqueous dopamine solution：Dopamine is added to the DOPA aqueous amine that 2g/L is configured in deionized water Solution, its PH is adjusted to 8.5 with Tris-HCl.
- 3. a kind of preparation method of dopamine modified glass-fiber composite nitride aluminium according to claim 1, its feature exist It is by pretreatment, described preprocess method in described glass fibre：Glass fibre is burnt under the conditions of 500~600 DEG C Burn 1~2h, is then washed with deionized 2~3 times, drying for standby.
- 4. a kind of preparation method of dopamine modified glass-fiber composite nitride aluminium according to claim 1 or 3, its feature It is that described glass fibre is alkali-free glass fibre, 12 μm~23 μm of diameter.
- 5. a kind of preparation method of dopamine modified glass-fiber composite nitride aluminium according to claim 1, its feature exist It is modified to be formed in poly-dopamine coating step through aqueous dopamine solution progress surface in described glass fibre, glass fibre adds 24~36h of magnetic agitation is carried out into aqueous dopamine solution, is then cleaned by glass fiber filter and with deionized water, after cleaning Dried under the conditions of 60~80 DEG C.
- 6. a kind of preparation method of dopamine modified glass-fiber composite nitride aluminium according to claim 1, its feature exist It is in the preparation method of described modification aluminium nitride suspension：Modified aluminium nitride powder is distributed in distilled water, ultrasonic wave shakes 5~10min is swung, forms stable modification aluminium nitride suspension.
- 7. a kind of preparation method of dopamine modified glass-fiber composite nitride aluminium according to claim 6, its feature exist Prepared in accordance with the following methods in described modification aluminium nitride powder：Aluminium nitride powder is added in alcohol solvent and adds nitridation The stearic acid of aluminium powder quality 8~10%, 2~3h is stood after stirring, adds telling for aluminium nitride powder quality 2~3% Temperature 80,3~5h is stirred under the conditions of 60~70 DEG C, the aluminium nitride powder finally filtered out is washed 2~3 times with alcohol solvent, is dried Modified aluminium nitride powder is produced after dry.
- 8. a kind of preparation method of dopamine modified glass-fiber composite nitride aluminium according to claim 7, its feature exist In described aluminium nitride powder average particle size particle size be 1.50 μm.
- 9. a kind of preparation method of dopamine modified glass-fiber composite nitride aluminium according to claim 6, its feature exist In described modification aluminium nitride powder weight be glass fiber weight 8~10%.
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Cited By (6)
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| CN110358293A (en) * | 2019-07-24 | 2019-10-22 | 金旸（厦门）新材料科技有限公司 | A kind of nylon composite materials and its prepare raw material and preparation facilities and method |
| CN110872448A (en) * | 2018-08-30 | 2020-03-10 | 中国石油化工股份有限公司 | Ultraviolet aging resistant waste rubber powder modified asphalt and preparation method thereof |
| CN111153669A (en) * | 2020-01-08 | 2020-05-15 | 中建材创新科技研究院有限公司 | Paper-surface gypsum board and preparation and application thereof |
| CN115725135A (en) * | 2022-10-28 | 2023-03-03 | 重庆会通科技有限公司 | Anti-floating fiber polypropylene reinforced composite material and preparation method thereof |
| CN116023694A (en) * | 2022-12-14 | 2023-04-28 | 华东理工大学 | Post-treatment enhancement method for TPU (thermoplastic polyurethane) product |
| CN117089157A (en) * | 2023-09-19 | 2023-11-21 | 南通惟怡新材料科技有限公司 | Preparation method of quantum dot composite material |
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| CN110872448A (en) * | 2018-08-30 | 2020-03-10 | 中国石油化工股份有限公司 | Ultraviolet aging resistant waste rubber powder modified asphalt and preparation method thereof |
| CN110872448B (en) * | 2018-08-30 | 2022-02-08 | 中国石油化工股份有限公司 | Ultraviolet aging resistant waste rubber powder modified asphalt and preparation method thereof |
| CN110358293A (en) * | 2019-07-24 | 2019-10-22 | 金旸（厦门）新材料科技有限公司 | A kind of nylon composite materials and its prepare raw material and preparation facilities and method |
| CN111153669A (en) * | 2020-01-08 | 2020-05-15 | 中建材创新科技研究院有限公司 | Paper-surface gypsum board and preparation and application thereof |
| CN115725135A (en) * | 2022-10-28 | 2023-03-03 | 重庆会通科技有限公司 | Anti-floating fiber polypropylene reinforced composite material and preparation method thereof |
| CN115725135B (en) * | 2022-10-28 | 2023-11-10 | 重庆会通科技有限公司 | Anti-floating fiber polypropylene reinforced composite material and preparation method thereof |
| CN116023694A (en) * | 2022-12-14 | 2023-04-28 | 华东理工大学 | Post-treatment enhancement method for TPU (thermoplastic polyurethane) product |
| CN117089157A (en) * | 2023-09-19 | 2023-11-21 | 南通惟怡新材料科技有限公司 | Preparation method of quantum dot composite material |
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