CN107629782A - A kind of preparation method of the photochromic pearlescent pigment of tungsten oxide mica and its dispersion liquid - Google Patents
A kind of preparation method of the photochromic pearlescent pigment of tungsten oxide mica and its dispersion liquid Download PDFInfo
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- CN107629782A CN107629782A CN201710795004.7A CN201710795004A CN107629782A CN 107629782 A CN107629782 A CN 107629782A CN 201710795004 A CN201710795004 A CN 201710795004A CN 107629782 A CN107629782 A CN 107629782A
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Abstract
The invention discloses the preparation method of a kind of photochromic pearlescent pigment of tungsten oxide mica and its dispersion liquid, belong to new function material preparation field.For overcome the deficiencies in the prior art, the present invention is uniformly coated tungsten oxide in mica surface by the auxiliary of water soluble organic substance and pH adjustment, so as to which the photochromic pearlescent pigment of tungsten oxide mica be prepared.Gained powder or its dispersion liquid are placed directly within and irradiates the different time under uviol lamp and observes its photochromic effect, it was found that the powder and dispersion liquid that are prepared show good photochromic effect under ultra violet lamp, its speed of photoresponse and photochromic good reversibility.Method in the present invention is cryochemistry synthetic method, it is gentle, simple, efficiently, be easy to industrialization amplification.
Description
Technical field
The invention belongs to new function material preparation field, be related to a kind of photochromic pearlescent pigment of tungsten oxide-mica and
The preparation method and applications of its dispersion liquid.
Background technology
Pearlescent pigment, as a kind of by the pigment that forms of thin layer of metal oxide cladding mica, because its have it is excellent resistance to
Chemical attack and resistance to elevated temperatures are widely used to the fields such as building decoration, ink, automotive paints and textile printing.Pearly-lustre face
Expect (MOx- mica：MOxIt is often referred to transition metal oxide) there is the advantages of stability is good, service life is long, it can greatly improve
The added value of normal transition metal oxide.MOxThe magical color of-mica-based pigment pearlescent pigment and various function are product
Brand-new colour system and quality of colour are provided, and occupies the huge market share in the whole world.Up to the present, it is ripe
The pearlescent pigment of preparation has titanium oxide (TiO2)/tin oxide (SnO2)/iron oxide (Fe2O3)-nacreous mica pigment.
At present tungsten oxide embedded photoluminescent material in the prevalence of photoresponse is slow, photochromic efficiency is low, it is poorly reversible and
Must be by ultraviolet source the problems such as, this largely effects on its actual application prospect.In order to further improve Study On Mica
Optical property (reflectivity, absorption, scattering etc.), the selection of compound oxide is crucial with mica.Tungsten oxide is because with low
The characteristic for the anti-light corrosion that malicious, high reactivity is become reconciled, catalysis and light, electrical part field, example it have been widely used at present
Such as photochemical catalyst, gas sensing and smart window.Prior is due to that tungsten oxide has excellent coloring effect, is current
One of most popular colour development material, it can be applied not only to electrochromic device, in gas-discoloration, photochromic device
In also have application.In addition, tungsten oxide is due to excellent physical and chemical performance, being widely used in being catalyzed, sensing and photoelectricity
Field, such as water decomposition, the catalytic degradation of pollutant, ultracapacitor, electrochromic device field.
However, the report at present on the photochromic pearlescent pigment of tungsten oxide-mica is seldom.So far in the prior art
Not yet find to grow oxidation tungsten structure in micron order mica surface and study the report of its photochromic effect.
The content of the invention
In order to solve the deficiency in tungsten oxide embedded photoluminescent material application in the prior art, the invention provides one kind to aoxidize
The preparation method of the photochromic pearlescent pigment of tungsten-mica.The present invention is using cryochemistry synthetic method in micron order mica substrate table
Uniformly, intactly cladding tungsten oxide obtains tungsten oxide-mica powder body material in face, and the powder body material is further scattered in the aqueous solution
Tungsten oxide-mica dispersion liquid can be obtained.Preparation method of the present invention it is simple it is controllable, to be easy to amplification, commercial viability strong,
Efficient, quick, reversible photochromic effect can be achieved in preparation-obtained pigment under ultra violet lamp.
The present invention is achieved through the following technical solutions above-mentioned technique effect：
The invention provides a kind of preparation method of the photochromic pearlescent pigment of tungsten oxide-mica, it specifically includes following
Step：
1) weigh soluble tungstate salt and be added into deionized water, 50- is stirred under conditions of 400-1500 revs/min
The 70 minutes aqueous solution for obtaining tungstates, the molar concentration of the aqueous solution of the tungstates is 0.001-1.0M；
2) micron-sized mica substrate is added into the aqueous solution of tungstates, is stirred under conditions of 400-1500 revs/min
25-35 minutes obtain suspension A, and molar concentration of the mica substrate in suspension A is 0.001-1.0M；
3) weigh water soluble organic substance to be added in suspension A, 2-26 hours are stirred under conditions of 400-800 revs/min
Obtain suspension B, described to have molar concentration of the water soluble organic substance in suspension B be 0.005-0.100M；
4) inorganic acid, adjustment suspension B pH to 0.1-2 are slowly added under stirring dropwise into suspension B；
Continue stirring under conditions of 400-800 revs/min and obtain suspension C, molar concentration of the inorganic acid in suspension C in 4 hours
For 0.010-5.0M；
5) suspension C is centrifuged after reaction terminates and carries out separation of solid and liquid, lower floor's solid is collected and adds it in alcohol
It is cleaned by ultrasonic, lower floor's solid is collected by centrifugation, repeats aforesaid operations 3-5 times；It is cleaned by ultrasonic 1 time and centrifuges using deionized water
Lower floor's solid is collected, product is put into isoperibol drying can obtain the photochromic pearlescent pigment of tungsten oxide-mica.
Soluble tungstate salt described in above-mentioned preparation method is any salt containing wolfram element, it is preferable that described
Soluble tungstate salt is one kind in sodium tungstate, ammonium tungstate.
After the aqueous solution that tungstates is obtained in above-mentioned preparation method, in addition to doped chemical is added into wolframic acid saline solution
The step of；Preferably, the doped chemical is the one or more in zirconium, aluminium, copper, titanium, molybdenum or elemental lithium；Add doped chemical
Method be that the aqueous solution that doped chemical salt is prepared is directly added into the aqueous solution of tungstates, described doped chemical
The amount of material is the 0.1-20% of the amount of wolfram element material；The addition of doped chemical, which can be played, changes tungsten oxide light-induced variable coloured light
Response range, optical responsivity and photochromic reversible effect are improved, make composite granule that there is more preferable photochromic effect.
In above-mentioned preparation method, micron order mica substrate is the mica of mica substrate or modified oxide in the step 2)
The mica substrate of substrate, preferably modified titanium dioxide.
In above-mentioned preparation method, water soluble organic substance is polyvinylpyrrolidone (PVP), polyvinyl alcohol in the step 3)
(PVA), one in polyethylene glycol (PEG), cetyl trimethylammonium bromide (CTAB) or neopelex (SDBS)
Plant, two or more.
In above-mentioned preparation method, the inorganic acid in step 4) is the one or more in hydrochloric acid, nitric acid or sulfuric acid；With hydrochloric acid
Exemplified by, for the acid using the acid after concentrated hydrochloric acid is diluted with deionized water, the concentration of the concentrated hydrochloric acid is 20-38%；Institute
It is 0.5-5M to state the sour concentration obtained after concentrated hydrochloric acid dilution, and final concentration of the hydrochloric acid in suspension C is 0.010-5.0M.
In above-mentioned preparation method, the acid after deionized water dilution in step 4) is added using slow way dropwise, always
Time for adding be not less than 30 minutes；
A kind of preparation method of the photochromic pearlescent pigment dispersion liquid of the mica of tungsten oxide-modified titanium dioxide, its specific bag
Include following step：
The photochromic pearlescent pigment of tungsten oxide-mica is added into the polyvinylpyrrolidine that weight/mass percentage composition is 1-10wt%
In the aqueous solution of ketone, be stirred until homogeneous under conditions of 400-2500 revs/min it is scattered, obtained viscous solution be tungsten oxide-
The dispersion liquid of the photochromic pearlescent pigment of mica, it can be used as follow-up coating process slurry therewith.Preferably, the polyethylene
The molecular weight of pyrrolidones is between 5000-360000；
A kind of application is also claimed in the present invention, i.e., the above-mentioned photochromic pearlescent pigment of tungsten oxide-mica prepare it is photic
Application in color-changing light-emitting pigment.The tungsten oxide that the present invention obtains-mica powder materials Photochromic excellent, in uviol lamp
Photochromic reactions are showed in irradiation a few minutes, are much better than conventional oxidation tungsten powder body.Photochromic good reversibility simultaneously, is removed
It is interior from the uviol lamp short time (a few minutes to dozens of minutes) that primary colors can be recovered.
The observation of photochromic effect is by by the mica powder or tungsten oxide-titanium oxide of tungsten oxide-modified titanium dioxide
The mica aqueous dispersions of modification are placed directly within to be irradiated the different time under uviol lamp, and the observation of colour fading process is tungsten oxide-oxidation
The mica powder of titanium modification or the mica dispersion liquid of tungsten oxide-modified titanium dioxide withdraw the irradiation of uviol lamp, photochromism processes
Invertibity be by repeating ultra violet lamp, the process withdrawing, irradiate is realized.Wherein the ultra violet lamp time is 1-60 points
Clock, preferably 3-30 minutes；
The invention provides the preparation method of a kind of photochromic pearlescent pigment of tungsten oxide-mica and its dispersion liquid and by base
The method of the tungsten oxide obtained in the preparation method-mica powder body prepared composition dispersion liquid, the characteristics of due to tungsten oxide multifunction,
Tungsten oxide prepared by the present invention-mica powder body material can be used as multifunctional material to be applied to catalysis, gas sensing and photoelectricity should
With grade other field.
The present invention not only realizes successful cladding of the tungsten oxide in mica surface by adding water-soluble polymer, and
The addition of water-soluble polymer causes combination product to possess good photochromic effect.Under ultra violet lamp, realize
Efficiently, quick, reversible is photochromic.The present invention has following innovative and advantage compared with prior art：
1. the present invention organically combines photochromic material and conventional pigment, final synthetically prepared micron order tungsten oxide-cloud
Female photochromic pearlescent pigment, and the dispersion liquid that can be coated on different application surface is prepared based on this.
2. in the tungsten oxide that the present invention is prepared-mica powder products material, mica stability is good, cheap, oxygen
Change tungsten and while being incorporated in raising conventional pigment added value of mica, the also application for tungsten oxide photochromic material provides
Good carrier, Commercial Prospect are bright and clear.
3. the addition of water-soluble polymer not only ensure that tungsten oxide in mica surface in preparation method of the present invention
Cladding completely, while key effect also is served to the photochromic effect for improving complex.
4. tungsten oxide of the present invention-mica composite granule preparation method uses wet chemical methods, whole process is in room temperature bar
Completed under part, avoid the equipment of complexity and higher energy consumption cost, reaction condition is gentle, it is easy to operate, be suitable for work
Industry metaplasia is produced.
5. preparation method of the present invention can realize complete cladding of the tungsten oxide in micron order mica substrate, and
Obtained tungsten oxide-mica composite granule photochromic effect is splendid, shows light-induced variable within ultra violet lamp a few minutes
Colour response, it is much better than conventional oxidation tungsten powder body.Photochromic good reversibility simultaneously, withdrawing in the uviol lamp short time can recover former
Color.
Brief description of the drawings
Fig. 1 is the stereoscan photograph of the photochromic pearlescent pigment of mica of tungsten oxide-modified titanium dioxide：Left figure is high score
The tungsten oxide particles photo being coated on mica sheet of multiple is distinguished, and right figure is the oxidation that low resolution multiple is coated on mica sheet
Tungsten particle photo.
Fig. 2 is the elementary analysis figure of the photochromic pearlescent pigment of mica of tungsten oxide-modified titanium dioxide.
Fig. 3 presents photic for the photochromic pearlescent pigment of mica of tungsten oxide-modified titanium dioxide under ultra violet lamp
Become chromatic graph.
Fig. 4 is the photochromic effect of dispersion liquid prepared by the photochromic pearlescent pigment of mica of tungsten oxide-modified titanium dioxide
Fruit is schemed.
Fig. 5 is the photochromic pearlescent pigment photochromic effect figure of mica of tungsten oxide-modified titanium dioxide of zirconium doping.
Embodiment
The present invention is expanded on further with instantiation below in conjunction with the accompanying drawings, and these are implemented an example and are merely to illustrate the present invention
Rather than display protection scope of the present invention, it simultaneously limits the scope of patent protection of the present invention in any way.This area skill
Art personnel are modified or replaced obtained technical scheme to the present invention on the premise of not paying creative work, are included
Within the scope of patent protection of the present invention.
The preparation of the photochromic pearlescent pigment of mica and dispersion liquid of the tungsten oxide-modified titanium dioxide of the present invention of experimental example 1
The preparation of the photochromic pearlescent pigment of mica of 1.1 tungsten oxides-modified titanium dioxide
Sodium tungstate 0.5g is taken to add in 30ml deionized waters, it is complete to sodium tungstate in 1000 revs/min of stirring 1-3 hours of rotating speed
Dissolving obtains solution.The mica substrate for weighing 0.6g titanium-oxide-coateds is added in solution, after being stirred 30 minutes at 1000 revs/min
To suspension A, stir 24 hours, obtain suspended under 800 revs/min after adding 0.15gPVP (polyvinyl pyrrolidone) thereto
Liquid B.The concentrated hydrochloric acid of concentration 30% is diluted to 2M with deionized water, is slowly added to 3ml, 2M salt in 1 hour into suspension B
Acid, finally continue stirring reaction 1-6 hours at normal temperatures.After reaction terminates, solution is separated with centrifuge, lower floor is collected and consolidates
Body, and be cleaned by ultrasonic and centrifuged with 40ml alcohol, every time after centrifugation, lower floor's solid is collected, the step 5 time is repeated, then spends
Ionized water is cleaned by ultrasonic 1 time and lower floor's solid is collected by centrifugation, and product is put into drying in 60 DEG C of constant temperature ovens afterwards aoxidizes
The photochromic pearlescent pigment of mica of tungsten-modified titanium dioxide.
The preparation of the photochromic pearlescent pigment dispersion liquid of mica of 1.2 tungsten oxides-titanium-oxide-coated
3g PVP (molecular weight 50000) are taken to be added in 50ml water, stirring weighs 0.5g tungsten oxides-oxidation after 30 minutes
The photochromic pearlescent pigment of titanium-mica adds, and continues stirring and obtains uniform dispersion liquid in 3 hours, standby.
The nacreous mica pigment of 1.3 tungsten oxides-titanium-oxide-coated it is photochromic
The photochromic pearlescent pigment of tungsten oxide-mica obtained using above-mentioned preparation method, using X ray optical diffraction,
Elementary analysis means mutually characterize to its thing.The photochromic pearlescent pigment of mica of Fig. 1 tungsten oxide-modified titanium dioxides of the present invention
Scanning electron microscope (SEM) photograph；As can be seen from the figure tungsten oxide-titanium oxide has carried out good cladding on mica substrate surface.
The elementary analysis figure of the photochromic pearlescent pigment of mica of Fig. 2 tungsten oxide-modified titanium dioxides of the present invention.From collection of illustrative plates
It can show that Ti contents are 25.85% in photochromic pearlescent pigment, content of element W 6.85%, indicate tungsten oxide-oxidation
Cladding of the titanium in mica substrate.
Utilize the optical absorption characteristic of ultraviolet-visible spectrum analysis powder.Tungsten oxide is investigated using stereoscan photograph to exist
The growing state of mica surface.The mica composite granule of tungsten oxide-modified titanium dioxide is placed under uviol lamp after shining 3 minutes and observed
Color change, it is rear to take out record color change, withdraw and placed at room temperature after ultra violet lamp -24 hours 1 minute, record color
Change.Ultra violet lamp is repeated after complete discoloration, observes color change.Fig. 3 is the cloud of tungsten oxide-modified titanium dioxide of the present invention
The photochromic effect that female photochromic pearlescent pigment is presented under ultra violet lamp.As can be seen from the figure tungsten oxide-oxidation
The photochromic pearlescent pigment of mica of titanium modification it is initial to be light yellow, after ultra violet lamp 3 minutes, show dark blue
Color, pigment substantially returns to priming color after uviol lamp 16 hours is removed.
Slurry prepared by the photochromic pearlescent pigment of the mica of tungsten oxide-modified titanium dioxide is placed under uviol lamp and shines 10
Color change is observed after -3 minutes seconds, record color change is taken out, withdraws and place 1-30 minutes after ultra violet lamp at room temperature,
Record color change.Ultra violet lamp is repeated after complete discoloration, observes color change.Fig. 4 is tungsten oxide-titanium oxide of the present invention
The photochromic effect that dispersion liquid prepared by the photochromic pearlescent pigment of mica of modification is presented under ultra violet lamp.Dispersion liquid
More preferable photochromic effect is showed under ultra violet lamp.Dispersion liquid priming color is light yellow turbid solution, in uviol lamp
Irradiation shows sapphirine after 10 seconds, then removes blueness major part after uviol lamp is placed 1 minute and has decorporated, places 5 points
Blueness is decorporated completely after clock, returns to priming color.
2 zirconium ion of the present invention of experimental example doping tungsten oxide-modified titanium dioxide the photochromic pearlescent pigment of mica and point
The preparation of dispersion liquid
The preparation of the photochromic pearlescent pigment of mica of tungsten oxide-modified titanium dioxide of 2.1 zirconiums doping
Sodium tungstate 0.7g, and 0.005g zirconium chloride is taken to add in 30ml deionized waters, in 1000 revs/min of stirrings 1 of rotating speed
Hour to sodium tungstate and zirconium chloride is completely dissolved to obtain solution.The mica substrate for weighing 0.8g titanium-oxide-coateds is added in solution,
Suspension A is obtained after being stirred 30 minutes at 1000 revs/min, stirring 24 is small under 800 revs/min after addition 0.10g PVP thereto
When, obtain suspension B.4ml is added dropwise in 1 hour into suspension B, 2M hydrochloric acid, it is anti-then to continue stirring at normal temperatures
Answer 3 hours.After reaction terminates, solution is layered with centrifuge, collects lower floor solid, and with the ultrasonic cleaning of 40ml alcohol and from
The heart, every time after centrifugation, lower floor's solid is collected, repeats the step 5 time, is then cleaned by ultrasonic 1 time and is collected by centrifugation with deionized water
Lower floor's solid.Product is put into 60 DEG C of isoperibols afterwards to dry 2 hours.
The preparation of the photochromic pearlescent pigment dispersion liquid of mica of tungsten oxide-modified titanium dioxide of 2.2 zirconiums doping
2g PVP (molecular weight 360000) are taken to be added in 50ml water, stirring weighs the oxidation of 0.3g zirconiums doping after 30 minutes
Tungsten-titanium oxide-mica composite granule adds, and continues stirring and obtains uniform dispersion liquid in 3 hours, standby.
2.3 zirconiums doping tungsten oxide-modified titanium dioxide the photochromic pearlescent pigment of mica and dispersion liquid it is photochromic
Effect
The photochromic pearlescent pigment of mica of tungsten oxide-modified titanium dioxide of zirconium doping is placed under uviol lamp and shone 3 minutes
After observe color change, as a result see Fig. 5.Withdraw and placed at room temperature after ultra violet lamp -24 hours 1 minute, record color becomes
Change.Ultra violet lamp is repeated after complete discoloration, observes color change.Fig. 5 is that tungsten oxide-titanium oxide of zirconium doping of the present invention is repaiied
The photochromic effect that the photochromic pearlescent pigment of mica of decorations is presented under ultra violet lamp.The powder priming color of preparation is
It is light yellow, under uviol lamp shine 3 minutes after i.e. show navy blue, compared to undoped with sample, zirconium doping color sample
Change is more notable, highlights influence of the ion doping to sample photochromic effect.
Dispersion liquid prepared by the photochromic pearlescent pigment of mica of tungsten oxide-modified titanium dioxide of zirconium doping is placed in ultraviolet
Color change is observed after being shone -3 minutes 10 seconds under lamp, record color change is taken out, is placed at room temperature after withdrawing ultra violet lamp
1-30 minutes, record color change.Ultra violet lamp is repeated after complete discoloration, observes color change.Its color change and Fig. 4
It is close.
Claims (10)
1. a kind of preparation method of the photochromic pearlescent pigment of tungsten oxide-mica, it specifically includes following steps：
1) weigh soluble tungstate salt and be added into deionized water, 50-70 points are stirred under conditions of 400-1500 revs/min
Clock obtains the aqueous solution of tungstates, and the molar concentration of the aqueous solution of the tungstates is 0.001-1.0M；
2) micron-sized mica substrate is added into the aqueous solution of tungstates, 25-35 is stirred under conditions of 400-1500 revs/min
Minute obtains suspension A, and molar concentration of the mica substrate in suspension A is 0.001-1.0M；
3) water soluble organic substance is weighed to be added in suspension A, under conditions of 400-800 revs/min stir 2-26 hours obtain
Suspension B, described to have molar concentration of the water soluble organic substance in suspension B be 0.005-0.100M；
4) inorganic acid, adjustment suspension B pH to 0.1-2 are slowly added under stirring dropwise into suspension B；In 400-
Continue stirring under conditions of 800 revs/min and obtain suspension C in 4 hours, molar concentration of the inorganic acid in suspension C is
0.010-5.0M；
5) suspension C is centrifuged after reaction terminates and carries out separation of solid and liquid, lower floor's solid and adding it in alcohol is collected and carries out
It is cleaned by ultrasonic, lower floor's solid is collected by centrifugation, repeats aforesaid operations 3-5 times；It is cleaned by ultrasonic 1 time and is collected by centrifugation using deionized water
Lower floor's solid, product is put into isoperibol drying and can obtain the photochromic pearlescent pigment of tungsten oxide-mica.
2. the preparation method of the photochromic pearlescent pigment of tungsten oxide-mica according to claim 1, it is characterised in that institute
The soluble tungstate salt stated is the one or more in sodium tungstate, ammonium tungstate.
3. the preparation method of the photochromic pearlescent pigment of tungsten oxide-mica according to claim 1, it is characterised in that
The step of being prepared after the aqueous solution of tungstates also including adding doped chemical into wolframic acid saline solution, the doped chemical
For the one or more in zirconium, aluminium, copper, titanium, molybdenum or elemental lithium.
4. the preparation method of tungsten oxide according to claim 3-mica composite granule, it is characterised in that add doping member
The method of element is is directly added into the aqueous solution that doped chemical salt is prepared, described doped chemical in the aqueous solution of tungstates
Material amount for wolfram element material amount 0.1-20%.
5. the preparation method of the photochromic pearlescent pigment of tungsten oxide-mica according to claim 1, it is characterised in that institute
The micron order mica substrate stated is the mica-based of mica substrate or the mica substrate, preferably modified titanium dioxide of modified oxide
Bottom.
6. the preparation method of the photochromic pearlescent pigment of tungsten oxide-mica according to claim 1, it is characterised in that institute
The water soluble organic substance stated is polyvinylpyrrolidone, polyvinyl alcohol, polyethylene glycol, cetyl trimethylammonium bromide or 12
One or more in sodium alkyl benzene sulfonate.
7. the preparation method of the photochromic pearlescent pigment of tungsten oxide-mica according to claim 1, it is characterised in that institute
The inorganic acid stated is the one or more in hydrochloric acid, nitric acid or sulfuric acid.
A kind of 8. preparation method of the photochromic pearlescent pigment dispersion liquid of the mica of tungsten oxide-modified titanium dioxide, it is characterised in that
It specifically includes following step：
The photochromic pearly-lustre face of mica that tungsten oxide-modified titanium dioxide will be prepared according to preparation method described in claim 5
Material is added in the aqueous solution for the polyvinylpyrrolidone that weight/mass percentage composition is 1-10wt%, in 400-2500 revs/min of condition
Under be stirred until homogeneous scattered, obtained viscous solution is the mica photochromic pearlescent pigment point of tungsten oxide-modified titanium dioxide
Dispersion liquid.
9. the preparation of the photochromic pearlescent pigment dispersion liquid of the mica of tungsten oxide-modified titanium dioxide according to claim 8
Method, it is characterised in that the molecular weight of the polyvinylpyrrolidone is between 5000-360000.
10. the answering in photochromic luminous pigment is prepared of the photochromic pearlescent pigment of tungsten oxide-mica described in claim 1
With.
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| PCT/CN2017/113060 WO2019047387A1 (en) | 2017-09-06 | 2017-11-27 | Tungsten oxide-mica photochromic pearlescent pigment and preparation method for dispersion liquid thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113861959A (en) * | 2021-11-10 | 2021-12-31 | 天津大学 | Silver-copper-tungsten oxide photochromic composite nano material and preparation method thereof |
| CN113980668A (en) * | 2021-11-10 | 2022-01-28 | 天津大学 | Copper-mica-tungsten oxide photochromic composite nano material and method |
| CN114958036A (en) * | 2022-06-30 | 2022-08-30 | 厦门韫茂科技有限公司 | Pearlescent pigment and preparation method thereof |
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| CN1461332A (en) * | 2000-10-14 | 2003-12-10 | Sky化学株式会社 | Method for preparing pearlescent pigment by coating metal oxides on synthesized mica |
| CN1519278A (en) * | 2002-11-21 | 2004-08-11 | Ĭ��ר���ɷ�����˾ | Iridescent pigment having high brilliance and high chroma |
| CN103013186A (en) * | 2012-12-21 | 2013-04-03 | 福建师范大学 | Composite coloring pearlescent pigment and preparation thereof |
| CN103333528A (en) * | 2013-06-26 | 2013-10-02 | 福建师范大学 | Preparation method of pearlescent pigment having fluorescent effect |
| WO2016168455A1 (en) * | 2015-04-15 | 2016-10-20 | Sun Chemical Corporation | Effect pigment preparation |
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| CN113861959A (en) * | 2021-11-10 | 2021-12-31 | 天津大学 | Silver-copper-tungsten oxide photochromic composite nano material and preparation method thereof |
| CN113980668A (en) * | 2021-11-10 | 2022-01-28 | 天津大学 | Copper-mica-tungsten oxide photochromic composite nano material and method |
| CN114958036A (en) * | 2022-06-30 | 2022-08-30 | 厦门韫茂科技有限公司 | Pearlescent pigment and preparation method thereof |
| CN114958036B (en) * | 2022-06-30 | 2023-12-01 | 丰田自动车株式会社 | Pearlescent pigment and preparation method thereof |
Also Published As
| Publication number | Publication date |
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| CN107629782B (en) | 2020-09-11 |
| WO2019047387A1 (en) | 2019-03-14 |
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