CN107312391A - Black pigment liquid, gray paint liquid and preparation method thereof - Google Patents
Black pigment liquid, gray paint liquid and preparation method thereof Download PDFInfo
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D17/00—Pigment pastes, e.g. for mixing in paints
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Abstract
The invention discloses a kind of black pigment liquid, gray paint liquid and preparation method thereof, it is related to display field, the shading performance, heat endurance and impedance behavior of black pigment liquid can be effectively improved.Black pigment liquid disclosed by the invention includes black nano particle, and the black nano particle includes nano particle and is wrapped in the poly-dopamine nanometer layer of the nano grain surface.Black pigment liquid disclosed by the invention, gray paint liquid and preparation method thereof are applied to the preparation process of black matrix, dark border and grey frame.
Description
Technical field
The present invention relates to display field, more particularly to a kind of black pigment liquid, gray paint liquid and preparation method thereof.
Background technology
Field of liquid crystal display, it usually needs the high light-proofness material of such as black pigment liquid is used, to prepare black side
Frame, or black matrix is prepared to suppress colour mixture between red, green, blue monochromatic light, and prevent light leak from improving contrast.
The black pigment used at present generally carbon black, the concentration of black pigment need to be improved in order to improve light-proofness, but black
Developability, cohesive, the stability of the higher black pigment liquid of color pigment concentration are lower, it is therefore desirable to the black of higher light-proofness
Color pigment liquid, to improve its shading performance.
In addition, existing black pigment liquid also has the problem of heat endurance is low, impedance value is low, black pigment liquid is being improved
While shading performance, it is also urgent problem to improve its heat endurance and impedance value.
The content of the invention
It is a primary object of the present invention to there is provided a kind of black pigment liquid, gray paint liquid and preparation method thereof, effectively
Improve the shading performance, heat endurance and impedance behavior of black pigment liquid.
To reach above-mentioned purpose, the present invention is adopted the following technical scheme that：
On the one hand, the embodiments of the invention provide a kind of black pigment liquid, including black nano particle, the black nano
Particle includes nano particle and is wrapped in the poly-dopamine nanometer layer of the nano grain surface.
Alternatively, the average grain diameter of the nano particle is less than or equal to 250nm.
Alternatively, the thickness of the poly-dopamine nanometer layer is less than or equal to 50nm.
Alternatively, the nano particle includes oxide nano particles, metal nanoparticle, and/or polymer nanocomposite
Grain.
Specifically, the nano particle includes SiO2Nano particle, ZnO nano particle, TiO2Nano particle, monocrystalline silicon are received
Rice grain, aluminum nanoparticles, and/or gold nano grain.
On the other hand, the embodiment of the present invention additionally provides a kind of gray paint liquid, including：White particle and black nano
Grain, the black nano particle includes nano particle and is wrapped in the poly-dopamine nanometer layer of the nano grain surface, wherein,
The ratio between average grain diameter of the white particle and the black nano particle is 1:0.5~1:1.5.
Alternatively, the average grain diameter of the nano particle is 100-250nm.
Alternatively, the thickness of the poly-dopamine nanometer layer is less than or equal to 50nm.
Alternatively, the nano particle includes oxide nano particles, metal nanoparticle, and/or polymer nanocomposite
Grain.
Specifically, the nano particle includes SiO2Nano particle, ZnO nano particle or TiO2Nano particle, monocrystalline silicon
Nano particle, aluminum nanoparticles, and/or gold nano grain.
Correspondingly, the embodiment of the present invention additionally provides a kind of preparation method of black pigment liquid, comprises the following steps：
Nano particle is added in the Tris-HCl solution of dopamine, stirred, to form one on the surface of nano particle
Strata dopamine nanometer layer, obtains black nano particle after centrifuging and washing；
By the black nano particle and polyacid monoester class compound reaction after and hydrolyze acquisition the carboxylic black in surface
Nano particle；
The carboxylic black nano particle in the surface is mixed with dispersant, resin and solvent, black is obtained
Pigment liquid.
Correspondingly, the embodiment of the present invention additionally provides a kind of preparation method of gray paint liquid, comprises the following steps：
Nano particle is added in the Tris-HCl solution of dopamine, stirred, to form one on the surface of nano particle
Strata dopamine nanometer layer, obtains black nano particle after centrifuging and washing；
By the black nano particle and polyacid monoester class compound reaction after and hydrolyze acquisition the carboxylic black in surface
Nano particle；
The carboxylic black nano particle in the surface is mixed with dispersant, resin and solvent, black is obtained
Pigment liquid；
Chinese white liquid is provided；
The black pigment liquid and the Chinese white liquid are mixed by predetermined ratio, gray paint liquid is obtained, wherein, institute
It is 1 to state the ratio between average grain diameter of white particle and the black nano particle:0.5~1:1.5.
Alternatively, the mixed proportion of the black pigment liquid and the Chinese white liquid is from 1:99 to 10:90.
The embodiment of the present invention is carried out by using the amino of poly-dopamine nano grain surface to poly-dopamine nano particle
Surface modification, introduces carboxyl, can greatly improve the stability of pigment liquid with dispersant stable bond.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is a kind of preparation method schematic diagram of black pigment liquid provided in an embodiment of the present invention；
Fig. 2 is a kind of preparation method schematic diagram of Chinese white liquid provided in an embodiment of the present invention；
Fig. 3 is a kind of dynamic light scattering result of black pigment liquid provided in an embodiment of the present invention；
Fig. 4 is a kind of dynamic light scattering result of Chinese white liquid provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
The embodiments of the invention provide a kind of black pigment liquid, including black nano particle, the black nano particle includes
Nano particle and the poly-dopamine nanometer layer for being wrapped in nano grain surface.
Poly-dopamine is the main composition of human body eumelanin, with extremely strong photo absorption performance, can protect body
Cell is from sun damages.The nano particle wrapped up by poly-dopamine nanometer layer is as a kind of new organic double compound, as black
Color nano particle is added in black pigment liquid, improves the shading performance of black pigment liquid；Poly-dopamine nanometer layer has pole
Strong heat endurance and relatively low electric conductivity, the dark border or black matrix prepared by the black pigment liquid can also improve theirs
Heat endurance and impedance behavior.But poly-dopamine nano particle directly mixes gained black face with dispersant, resin and solvent
The less stable of feed liquid, it is difficult to meet and require.The present invention is by using the amino of poly-dopamine nano grain surface to poly- many
Bar amine nano particle carries out surface modification, introduces carboxyl, can greatly improve the steady of pigment liquid with dispersant stable bond
It is qualitative.
In the embodiment of the present invention, nano particle can be obtained by homemade mode, can also be obtained by commercially available mode
.
Nano particle can be organic material, or inorganic material, for example, nano particle can be received including oxide
One or more in rice grain, metal nanoparticle, and/or polymer nano granules.Specifically, nano particle can include
SiO2Nano particle, ZnO nano particle, TiO2Nano particle, monocrystalline nano silicon particles, aluminum nanoparticles, and/or gold nano
One or more in grain.
In the embodiment of the present invention, by selecting various sizes of nano particle to efficiently control black nano particle
Particle diameter.At present, the preparation method of various various sizes of nano particles is highly developed, and in the market is just commercially available difference
The nano particle of size, such as various sizes of SiO2、ZnO、TiO2Deng；In addition, can also be by homemade according to prior art
Mode obtains various sizes of nano particle, for example：According toMethod is hydrolyzed and can obtained to tetraethyl orthosilicate (TEOS)
Obtain 30nm-1000nm SiO2SiO2Nano particle.So, the embodiment of the present invention can simply and effectively obtain different-grain diameter
Black nano particle, to meet various use demands.
Specifically, the average grain diameter of nano particle can be less than or equal to 250nm, preferably lower than or equal to 200nm, than
Such as 100-250nm, preferably 150-180nm, specifically, the average grain diameter of nano particle can for 250nm, 220nm, 200nm,
180nm, 150nm, 100nm, 80nm, 50nm etc..
Or, by controlling the thickness of poly-dopamine nanometer layer to efficiently control the particle diameter of black nano particle,
For example, the thickness of poly-dopamine nanometer layer can be less than or equal to 50nm, preferably lower than or equal to 30nm, more preferably less than or
Equal to 20nm.
At present, the frame of the mobile device such as the mobile phone of in the market, tablet personal computer is generally black or white, be there is no
There is grey frame.But, there is the demand of grey frame in the market, and there is panel producer seeking the solution of grey frame
Certainly scheme.The key of grey frame is to need stable gray paint liquid, although can be by by black pigment liquid and white face
The mode that feed liquid is mixed prepares gray paint liquid, however, conventional black pigment liquid is mainly by scattered in the market
Carbon black is obtained, and its particle diameter is smaller, quality is also smaller, and Chinese white liquid mainly passes through the inorganic oxides such as scattered titanium dioxide
To obtain, its particle diameter is larger, and quality is also than larger.Pressed necessarily by the black pigment liquid and Chinese white liquid of commonly using in the market
The obtained gray paint liquid of ratio mixing is too big therefore extremely unstable due to the two particle diameter, density difference, is easily layered
Phenomenon, it is difficult to meet use requirement.
Therefore, in another aspect of this invention, gray paint additionally providing a kind of stabilization, disclosure satisfy that use requirement
Liquid.The gray paint liquid includes：White particle and black nano particle, black nano particle include nano particle and are wrapped in receive
The poly-dopamine nanometer layer on rice grain surface, wherein, the ratio between average grain diameter of white particle and black nano particle is 1:0.5~
1:1.5。
Because the main part of black nano particle is still nano particle, then, by selecting the size with white particle
The same or like nano particle with density, can make the size and density of the black nano particle and white particle prepared
Same or like, such as it is 1 to make the ratio between average grain diameter of the two:0.5~1:1.5, so, when white particle and black nano
After grain mixing, the two particle diameter is same or like, and density is also same or like, the problems such as being effectively prevented from floating,
So as to obtain relatively stable gray paint liquid.
In actual applications, the factor of influence gray paint liquid stability is a lot, in addition to above-mentioned size and density,
The factors such as consumption, the viscosity of the materials such as the dispersant, resin and the solvent that are included in gray paint liquid may also can influence grey face
The stability of feed liquid.It is understood, therefore, that the main size from white particle and black nano particle of the embodiment of the present invention
Go out the stability problem sent and consider gray paint liquid with the angle of density, it is no intended to limit or imply size and density as shadow
Ring the single factor of gray paint liquid stability.
The ratio between average grain diameter of white particle and black nano particle can be 1:0.5~1:1.5, it is further 1:0.7
~1:1.2, preferably 1:0.8~1:1.1, preferably 1:0.9~1:1.
White particle can be inorganic oxide, such as titanium dioxide, silica, zinc oxide, tin oxide etc..White particle
Particle diameter is usually nanoscale.Specifically, the average grain diameter of white particle can be 100-250nm, preferably 120-220nm, it is more excellent
Select 150-200nm, further preferably 150-180nm, specifically, the average grain diameter of white particle can for 250nm, 220nm, 200nm,
180nm, 150nm, 120nm, 100nm etc..
These white particles can be obtained by commercially available mode, can also be obtained by homemade mode.At present, nanometer
The preparation of level inorganic oxide is very ripe, and those skilled in the art can be prepared using existing preparation method, this
Invention is not described in detail herein.
In the embodiment of the present invention, nano particle can be obtained by homemade mode, can also be obtained by commercially available mode
.
Nano particle can be organic material, or inorganic material, for example, nano particle can be received including oxide
One or more in rice grain, metal nanoparticle, and/or polymer nano granules.Specifically, nano particle can include
SiO2Nano particle, ZnO nano particle, TiO2Nano particle, monocrystalline nano silicon particles, aluminum nanoparticles, and/or gold nano
One or more in grain.
In the embodiment of the present invention, by selecting the nano particle of different-grain diameter to efficiently control black nano particle
Particle diameter.At present, the preparation method of various various sizes of nano particles is highly developed, and in the market is just commercially available difference
The nano particle of size, such as various sizes of SiO2、ZnO、TiO2Deng；In addition, can also be by homemade according to prior art
Mode obtains various sizes of nano particle, for example：According toMethod is hydrolyzed and can obtained to tetraethyl orthosilicate (TEOS)
Obtain 30nm-1000nm SiO2SiO2Nano particle.So, the embodiment of the present invention can simply and effectively obtain different-grain diameter
Black nano particle, to meet various use demands.
Specifically, the average grain diameter of nano particle can be 100-250nm, more preferably preferably 120-220nm, 150-
200nm, further preferably 150-180nm, specifically, the average grain diameter of nano particle can for 250nm, 220nm, 200nm, 180nm,
150nm, 120nm, 100nm etc..
Or, by controlling the thickness of poly-dopamine nanometer layer to efficiently control the particle diameter of black nano particle,
For example, the thickness of poly-dopamine nanometer layer can be less than or equal to 50nm, more preferably from about preferably from about 30nm, 20nm.
Correspondingly, the embodiment of the present invention additionally provides a kind of preparation method of black pigment liquid, it is schematically shown in Fig. 1
In, specifically, comprise the following steps：
S1：Nano particle 11 is added in the Tris-HCl of dopamine (three (methylol) aminomethanes) solution, stirred,
To form a strata dopamine nanometer layer 12 on the surface of nano particle 11, centrifuge and wash to obtain black nano particle 13.
In the step, mixing time can be 15-30 hours, and whipping temp can be 10-30 DEG C, preferably 20-25 DEG C.
Because the preparation method of various various sizes of nano particles is highly developed, therefore, nano particle can lead to
Cross commercially available mode to obtain, for example, various sizes of ZnO, TiO can commercially be bought2Deng nano particle；Or, according to
Prior art can also obtain various sizes of nano particle by homemade mode, for example：According toMethod aligns silicic acid
Ethyl ester (TEOS), which is hydrolyzed, can obtain 30nm-1000nm SiO2SiO2Nano particle.
S2：After the reaction of black nano particle 13 and polyacid monoester class compound and it will hydrolyze carboxylic black to obtain surface
Color nano particle；Wherein, polyacid monoester class compound can include：Monoethyl malonate, monomethyl succinate, neighbour/to benzene two
Formic acid mono-methyl, monomethyl ester, sebacic acid monomethyl ester, single-ethyl succinate, dipropyl adipate, dodecanedioic acid list first
The polyacid monoester class compound such as ester；Wherein, the polyacid in the polyacid monoester class compound can be diacid, three acid etc., and monoesters can
Think methyl esters, ethyl ester, propyl ester, butyl ester etc..So, the carboxyl elder generation in polyacid monoester class compound and black nano particle reaction,
Afterwards, the ester hydrolysis in polyacid monoester class compound, to expose hydroxyl, so as to form the carboxylic black nano in surface
Grain.
S3：The carboxylic black nano particle in the surface is mixed with dispersant, resin and solvent, obtains steady
Fixed black pigment liquid.Wherein, as shown in figure 1, reacting shape with dispersant after the surface introducing carboxy CO OH of black nano particle
Into one layer of dispersant layer 14, so that it stably suspends in a solvent, so as to obtain stable, not stratified black pigment liquid.
Solvent can be solvent conventional in black pigment liquid, for example, propylene glycol methyl ether acetate (PMA).
Dispersant can be solvent conventional in black pigment liquid, the business of for example, Bi Ke (BYK) chemical company (Germany)
The name of an article is DISPER BYK-160, DISPER BYK-161, DISPER BYK-162, DISPER BYK-163, DISPER BYK-
164、DISPER BYK-165、DISPER BYK-166、DISPER BYK-171、DISPER BYK-182、DISPER BYK-
184th, DISPER BYK-2000, DISPER BYK-2001, DISPER BYK-2070, DISPER BYK-2150 product；
The trade name EFKA-44 of EFKA companies (Holland), EFKA-46, EFKA-47, EFKA-48, EFKA-4010, EFKA-4050,
EFKA-4055、EFKA-4020、EFKA-4015、EFKA-4060、EFKA-4300、EFKA-4330、EFKA-4400、EFKA-
4406th, EFKA-4510, EFKA-4800 product；The trade name AJISPURPS-821 of Ajincomoto Co., Inc,
AJISPURPS-822, AJISPURPS-823 product；The trade name HINOACT T-6000 of Avecia companies (Britain),
HINOACT T-7000, HINOACT T-8000 product etc..The trade name SOLSPERSE-3000 of Lubrizol companies,
9000、13000、13240、13650、13940、16000、17000、18000、20000、21000、24000、26000、27000、
28000、31845、32000、32500、33500、32600、34750、35100、36600、38500、41000、41090、
53095th, 55000,76500 product.
The carboxylic black nano particle in surface can be using black face in the prior art with dispersant, resin and solvent
The conventional mixed proportion of feed liquid is mixed, such as, the carboxylic black nano particle in 15wt% surfaces is disperseed with 20wt%
Agent, 20wt% resins and 45wt% solvents PMA are mixed, to obtain black pigment liquid.
Black pigment liquid prepared by the embodiment of the present invention and the black pigment liquid of above-mentioned offer have identical technical characteristic,
And identical technique effect can be reached, it is no longer repeated herein.
Further, the embodiment of the present invention additionally provides a kind of preparation method of gray paint liquid, comprises the following steps：
S1：Nano particle is added in the Tris-HCl solution of dopamine, stirs, is formed with the surface in nano particle
One strata dopamine nanometer layer, washes and dries to obtain black nano particle.
S2：After the reaction of the black nano particle and polyacid monoester class compound and it will hydrolyze carboxylic to obtain surface
Black nano particle.
S3：The carboxylic black nano particle in the surface is mixed with dispersant, resin and solvent, obtained black
Color pigment liquid.
S4：Chinese white liquid is provided.Wherein, Chinese white liquid can be included mainly：Titanium dioxide, silica, zinc oxide, oxygen
Change the white particles such as tin.Certainly, Chinese white liquid can also be comprising other materials such as dispersant, resin, solvents, and the present invention is to this
It is not described in detail.
In embodiments of the present invention, Chinese white liquid can be obtained by commercially available mode, can also pass through homemade side
Formula is obtained.
Such as, as shown in Fig. 2 can be by the way that white particle is mutually mixed with dispersant, resin and solvent, to obtain
Chinese white liquid.Wherein, when white particle 21 carries out scattered under dispersant effect, the surface of white particle 21 can form one layer
Dispersant layer 24, so that it stably suspends in a solvent, so as to obtain stable Chinese white liquid.
Wherein, white particle can be entered with dispersant, resin and solvent using mixed proportion commonly used in the prior art
Row mixing.For example, when white particle is titanium dioxide, the specific preparation process of Chinese white liquid can be：By 10wt% titanium whites
Powder carries out shake with 1.0mm zirconiums pearl with 10wt% dispersants, 30wt% resins and 50wt% solvents PMA to be disperseed, after 8h
Obtain size 200nm or so Chinese white liquid.
Prepare the dispersant that is used during Chinese white liquid can with it is above-mentioned prepare black pigment liquid when the dispersant phase that uses
Together.
S5：Black pigment liquid and Chinese white liquid are mixed by predetermined ratio, gray paint liquid is obtained, wherein, it is described white
The ratio between average grain diameter of white particle and the black nano particle in color pigment liquid is 1:0.5~1:1.5.
In the step, by the mixed proportion for adjusting black pigment liquid and Chinese white liquid, you can the grey needed for obtaining
Pigment liquid.The mixed proportion of difference according to requirements, black pigment liquid and Chinese white liquid can be from 1:99 to 10:90.
Also, the viscosity of the gray paint liquid of different proportion is highly stable, and viscosity B coefficent is respectively less than ± 0.4 in 3 months, is not in
The problems such as layering, loose colour.
The preparation method of gray paint liquid provided in an embodiment of the present invention substantially contains the system of above-mentioned black pigment liquid
Preparation Method, i.e. after black pigment liquid is prepared, it is mutually mixed with Chinese white liquid, that is, has obtained gray paint liquid.Cause
This, it is special that the gray paint liquid and preparation method thereof contains identical with black pigment liquid and preparation method thereof or corresponding technology
Levy, and identical or corresponding technique effect can be reached, it is no longer repeated herein.
The embodiment of the present invention by the preparation method of black pigment liquid, using dopamine in alkaline environment oxidation polymerization shape
Into black poly-dopamine the characteristics of prepare black pigment liquid.I.e. with such as SiO of certain size2, ZnO etc. nano particle
For template, the oxidation polymerization of adjoint dopamine in alkaline dopamine solution, you can form one on the surface of above-mentioned nano particle
The poly-dopamine nanometer layer of layer black, obtains black nano particle, and the black nano particle surface is modified and carried out after disperseing
Black pigment liquid can be obtained.
In the gray paint liquid of preparation, because the main part of black nano particle is still nano particle, then, pass through
Selection and the size and the same or like nano particle of density of the white particle of such as titanium dioxide, can make to prepare is black
The size and density of color nano particle and the white particle of such as titanium dioxide are same or like, so, when black pigment liquid and in vain
After the mixing of color pigment liquid, the particle diameter of black nano particle and white nano particle is same or like, and density, can also than more consistent
With avoid by nanoparticle density, particle diameter difference is big and bring the layering of pigment liquid, floating the problems such as, so as to obtain compared with
For stable gray paint liquid.
The preparation process of gray paint liquid provided in an embodiment of the present invention will be described by specific embodiment below.
Step 1：Prepare SiO2Nano particle
PressIt is prepared by method：By ethanol as solvent, 0.61M NH is added thereto3And 4.7M H2O, is fully stirred
Mix 10 minutes, it is 0.75M to state then up in mixed solution and tetraethyl orthosilicate (TEOS) to concentration is added dropwise.With SiO2Receive
The generation of rice grain, system gradually becomes cloudy, the stirring reaction 5h at 20 DEG C.5000r is centrifuged and is used ethanol and water washing
The SiO of acquisition2Nano particle 3 times, 150 DEG C of drying can obtain the SiO that particle diameter is about 180nm2Nano particle.
Step 2：Prepare black pigment liquid
By 0.1g about 180nm SiO2It is added in the Tris-HCl solution of 30mL 3.0mg/mL dopamine, at 25 DEG C
Lower stirring reaction 24h, you can in SiO2The surface of nano particle forms a layer thickness and received for 20nm or so black poly-dopamine
Rice layer.5000r centrifugation washings can obtain the black nano particle that size is about 200nm.
Wherein, ZnO, TiO2Equidimension can replace above-mentioned SiO in 200nm or so oxide nano particles2To prepare
Black nano particle.
By 20mmol monoethyl malonates and 25mmol condensing agents HBTU in 500mL CH2Cl2Add after middle mixing 0.5h
Enter the above-mentioned black nano particle stirring reaction 12h of 20g, centrifuge and cleaned with ethanol, be then added to 200g 2mol/L NaOH
In solution after stirring hydrolysis 24h, plus excess salt acid for adjusting pH is to acidity, centrifuges and with can obtain surface after acetone clean dry
Carboxylic black nano particle.
Take the 15wt% carboxylic black nano particle in above-mentioned surface and 20wt% dispersants, 20wt% resins and
45wt% solvents PMA is mixed, and black pigment liquid can be obtained after 4h.
Step 3：Prepare Chinese white liquid
10wt% titanium dioxides are entered with 10wt% dispersants, 30wt% resins and 50wt% solvents PMA with 1.0mm zirconium pearls
Row shake disperses, and size 200nm or so Chinese white liquid can be obtained after 8h.
Step 4：Prepare gray paint liquid：
Black pigment liquid and Chinese white liquid are mixed by a certain percentage, you can the gray paint liquid needed for obtaining.Root
According to desired difference, the mixed proportion of black pigment liquid and Chinese white liquid can be from 1:99 to 10:90.Also, different proportion
Gray paint liquid viscosity it is highly stable, viscosity B coefficent is respectively less than ± 0.4 in 3 months, is not in that layering, loose colour etc. are asked
Topic.
Meanwhile, inventor also measured were can reach using the surface resistance value of the grey matrix obtained by the gray paint liquid
1013Ω/cm2~1016Ω/cm2, OD values more than 4.0, and 230 DEG C handle after the grey matrix impedance value and OD values
Significant change is not had, illustrates that gray paint liquid provided in an embodiment of the present invention has good impedance behavior, shading performance
And good heat endurance.
The particle size point in above-mentioned black pigment liquid and Chinese white liquid is determined by dynamic light scattering technique (DLS)
Cloth.Fig. 3 is the dynamic light scattering result of black pigment liquid, the particle diameter distribution of particle in black pigment liquid it can be seen from the figure
In 227.4nm or so.Fig. 4 is the dynamic light scattering result of Chinese white liquid, the particle in Chinese white liquid it can be seen from the figure
Particle diameter distribution in 217.1nm or so.It follows that the particle diameter distribution basic one of black pigment liquid and particle in Chinese white liquid
Cause, so, when black pigment liquid is mutually mixed with Chinese white liquid, layering, loose colour will not be caused because of particle size difference
Etc. phenomenon, so as to obtain the stronger gray paint liquid of stability.
Poly-dopamine nanometer layer of oxidation polymerization formation black in alkaline environment using dopamine of the embodiment of the present invention
Feature prepares black nano particle, i.e., using the nano particle of certain size as template, with many in alkaline dopamine solution
The oxidation polymerization of bar amine, you can form the poly-dopamine nanometer layer of one layer of black on the surface of above-mentioned nano particle, obtains black
Nano particle, the surface modification black nano particle and it is scattered after can obtain stable black pigment liquid.Pass through selection and titanium
The same or like nano particle of the size and density of white powder, can make the chi of the black nano particle and titanium dioxide prepared
Very little and density is same or like, so, after black pigment liquid is mixed with Chinese white liquid, black nano particle and titanium dioxide
The particle diameter of nano particle is same or like, and density is also consistent, can avoid by nanoparticle density, particle diameter difference is big and brings
The problems such as layering of pigment liquid, floating, so as to obtain stable gray paint liquid.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of black pigment liquid, it is characterised in that including black nano particle, the black nano particle includes nano particle
With the poly-dopamine nanometer layer for being wrapped in the nano grain surface.
2. black pigment liquid according to claim 1, it is characterised in that the average grain diameter of the nano particle to be less than or
Equal to 250nm.
3. black pigment liquid according to claim 1, it is characterised in that the thickness of the poly-dopamine nanometer layer be less than
Or equal to 50nm.
4. black pigment liquid according to claim 1, it is characterised in that the nano particle includes oxidate nano
Grain, metal nanoparticle, and/or polymer nano granules.
5. a kind of gray paint liquid, it is characterised in that including：White particle and black nano particle, the black nano particle
Including nano particle and the poly-dopamine nanometer layer for being wrapped in the nano grain surface, wherein, the white particle with it is described
The ratio between average grain diameter of black nano particle is 1:0.5~1:1.5.
6. gray paint liquid according to claim 5, it is characterised in that the average grain diameter of the nano particle is 100-
250nm。
7. gray paint liquid according to claim 5, it is characterised in that the thickness of the poly-dopamine nanometer layer be less than
Or equal to 50nm.
8. gray paint liquid according to claim 5, it is characterised in that the nano particle includes oxidate nano
Grain, metal nanoparticle, and/or polymer nano granules.
9. a kind of preparation method of black pigment liquid, it is characterised in that comprise the following steps：
Nano particle is added in the Tris-HCl solution of dopamine, stirred, to form a strata on the surface of nano particle
Dopamine nanometer layer, obtains black nano particle after centrifuging and washing；
By the black nano particle and polyacid monoester class compound reaction after and hydrolyze acquisition the carboxylic black nano in surface
Particle；
The carboxylic black nano particle in the surface is mixed with dispersant, resin and solvent, black pigment is obtained
Liquid.
10. a kind of preparation method of gray paint liquid, it is characterised in that comprise the following steps：
Nano particle is added in the Tris-HCl solution of dopamine, stirred, to form a strata on the surface of nano particle
Dopamine nanometer layer, obtains black nano particle after centrifuging and washing；
By the black nano particle and polyacid monoester class compound reaction after and hydrolyze acquisition the carboxylic black nano in surface
Particle；
The carboxylic black nano particle in the surface is mixed with dispersant, resin and solvent, black pigment is obtained
Liquid；
Chinese white liquid is provided；
The black pigment liquid and the Chinese white liquid are mixed by predetermined ratio, gray paint liquid is obtained, wherein, it is described white
The ratio between average grain diameter of white particle and the black nano particle in color pigment liquid is 1:0.5~1:1.5.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019056915A1 (en) * | 2017-09-20 | 2019-03-28 | 广州奥翼电子科技股份有限公司 | Pigment particle and electrophoretic display unit applied to electrophoretic display |
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| JP2020056993A (en) * | 2018-10-03 | 2020-04-09 | ベンキュー マテリアルズ コーポレーション | Colorant composition for colored contact lenses, colored contact lens comprising the same, and method of modifying colorant for colored contact lenses |
| CN110982021A (en) * | 2018-10-03 | 2020-04-10 | 明基材料股份有限公司 | Colorant compositions for tinting silicone hydrogel contact lenses, contact lenses containing same, and methods of modifying silicone hydrogel contact lens colorants |
| CN110989200A (en) * | 2018-10-03 | 2020-04-10 | 明基材料股份有限公司 | Colorant compositions for tinted contact lenses, and methods of modifying tinted contact lens colorants |
| CN110982021B (en) * | 2018-10-03 | 2022-03-08 | 明基材料股份有限公司 | Colorant compositions for tinting silicone hydrogel contact lenses, contact lenses containing same, and methods of modifying silicone hydrogel contact lens colorants |
| CN110154186A (en) * | 2019-04-09 | 2019-08-23 | 中国林业科学研究院林业新技术研究所 | A kind of aqueous wood stain and color method |
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Application publication date: 20171103 |