CN102430370A - Titanium dioxide particle surface charge for electrophoretic display and controllable preparation method - Google Patents
Titanium dioxide particle surface charge for electrophoretic display and controllable preparation method Download PDFInfo
- Publication number
- CN102430370A CN102430370A CN2011102379080A CN201110237908A CN102430370A CN 102430370 A CN102430370 A CN 102430370A CN 2011102379080 A CN2011102379080 A CN 2011102379080A CN 201110237908 A CN201110237908 A CN 201110237908A CN 102430370 A CN102430370 A CN 102430370A
- Authority
- CN
- China
- Prior art keywords
- tio
- preparation
- particles
- isopar
- tetrachloro
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Detergent Compositions (AREA)
Abstract
The invention relates to a titanium dioxide particle surface charge for electrophoretic display and a controllable preparation method. Controllable preparation of charges of 18.83 to 43.47 mV, -18.06 to -50.57 mV and -64.89 to -174.62 mV corresponding to three mediums of tetrachloroethylene, Isopar H and dodecyl benzene can be realized respectively by using titanium dioxide particles prepared through modification of anionic surfactant sodium dodecyl benzene sulfonate; controllable preparation of charges of -6.79 to -31.57 mV, 20.21 to 32.51 mV and 45.68 to 154.02 mV corresponding to three mediums of tetrachloroethylene, Isopar H and dodecyl benzene can be realized respectively by using titanium dioxide particles prepared through modification of cationic surfactant hexadecyl trimethyl ammonium bromide; and controllable preparation of charges of -14.03 to -80.98 mV, 22.27 to 57.10 mV and 42.23 to 165.45 mV corresponding to three mediums of tetrachloroethylene, Isopar H and dodecyl benzene can be realized respectively by using titanium dioxide particles prepared through modification of polymer styrene/divinybenzene.
Description
Technical field
The present invention relates to the technology of electrophoresis particle; Method especially for the TiO 2 particles finishing and the controlled preparation of surface charge thereof of electrophoresis showed is applied to the controlled preparation of the TiO 2 particles surface charge in little glass of electrophoresis showed and the microcapsules electrophoresis display electronic paper.
Technical background
Electrophoresis showed is because its unique advantages has caused more and more people's concern, and electrophoresis disclosing solution is the core of electrophoretic display device (EPD).The demonstration of image is finally accomplished through this functional material of electrophoresis disclosing solution in the display.Electrophoresis disclosing solution is a nonaqueous colloid system, the steady suspension that is made up of electrophoresis particle, decentralized medium, dispersant.Electrophoresis showed mainly is to utilize the principle of electrophoresis, is clipped in two interelectrode electrophoresis particles and under effect of electric field, moves, and makes two kinds of various colors of electrophoresis particle Alternation Display of motion.Therefore selecting suitable electrophoresis particle is the key of preparation electrophoresis disclosing solution.The character of electrophoresis particle affects the display performances such as contrast, reflectivity, response time, stability and life-span of electrophoretic display device, EDD to a great extent.So, in three more than ten years, enjoy attention for the research and the improvement of electrophoresis particle always.
Titanium dioxide because its low dissolving in organic solvent, no swelling, chemical property is stable and good optical performance and conduct in vain particle be applied in the electrophoresis showed; But its density is excessive, be prone to reunion, free settling, relatively poor with relatively poor, the surperficial charged ability of compatibility of organic solvent, causes its application to be restricted.Therefore, the surface modification of TiO 2 particles was never interrupted all the time.Li Xiaoe etc. through inorganic modified method at TiO
2Particle surface deposition hydration SiO
2To improve its dispersiveness; Zhang Zhihong etc. are earlier at TiO
2Particle deposition one deck Al (OH)
3, handle to improve TiO with neopelex again
2Performance; The grand grade of kingdom used silane coupler modified TiO
2Particle is to improve the compatibility of itself and organic dispersion medium; Yu D.G., Jang I.B., Chul A.K. and Kim J.H. adopt different monomers to pass through polymerisation at TiO respectively
2The surface coated one layer of polymeric with the density that reduces titanium dioxide with improve its surperficial charge.But, to TiO
2Not studying in great detail of controlled charged character in surface and carrying capacity reported.
The charged ability in electrophoresis particle surface is directly connected to the effect of electrophoresis showed, if can prepare surperficial charged character and the controlled electrophoresis particle of carrying capacity, just can control the response speed, contrast, reflectivity of electrophoresis showed etc. effectively.As long as make different colour developing particles have the given quantity of electric charge, just can control its motion in decentralized medium, thus reach the purpose that the regulation and control device shows.
Summary of the invention
The object of the present invention is to provide a kind of method that is used for the controlled preparation of TiO 2 particles surface charge of electrophoresis showed, remedied the deficiency of traditional research.The method that is used for the controlled preparation of TiO 2 particles surface charge of electrophoresis showed provided by the invention.Adopt multiple anion surfactant, cationic surfactant or polymer that the nano-titania particle surface is modified; The charged character of back particle in decentralized medium tetrachloro-ethylene, detergent alkylate or Isopar H is modified in research, through with different types of surfactant titanium dioxide surface being modified to control the charged character on its surface.The concentration of having studied charge control agent in the modification is to the influence of TiO 2 particles surface carrying capacity and made corresponding curve, and the amount that is incorporated into the charge control agent of titanium dioxide surface through operating key controls its surperficial carrying capacity.
Technical scheme of the present invention is following:
A kind of TiO 2 particles surface charge controllable preparation method that is used for electrophoresis showed; With anion surfactant, cationic surfactant or polymer the nano-titania particle surface is modified at first respectively; Modify the back particle and be dispersed in the dispersant, to its surperficial charged character and carrying capacity production standard curve.
Described dispersant is the dispersion among tetrachloro-ethylene, detergent alkylate or the Isopar H.Described anionic species surfactant is neopelex (DBS) or lauryl sodium sulfate (K12); The cationic surfactant is softex kw (CTAB) or triethanolamine (TEA); Polymer class is polymethyl methacrylate (PMMA) or styrene (St)/divinylbenzene (DVB).The sign of its covered effect is seen Fig. 1, and (a)～(d) is respectively unmodified, DBS modification, CTAB modification and St/DVB modification TiO among the figure
2The SEM figure of particle, the TiO after visible surface is modified
2The particle dispersion situation of particle and unmodified has bigger difference, and there is agglomeration in the particle before modifying, the about 200nm of particle diameter, and the TiO after the yin, yang ionic surface active agent is modified
2Particle diameter reduces, and is distributed between 50～110nm, disperses better the TiO that polymer St/DVB modifies
2The particle diameter of particle has reached 200nm, and the surface is more smooth.(f)～(h) is corresponding TiO among the figure
2The TEM figure of particle can be clear that surfactant and the polymer decorative layer to the TiO2 particle, and DBS and CTAB have only 1～2nm at the decorative layer of TiO2 particle surface, and the clad of St/DVB polymer has reached about 30nm.
Adopt the TiO 2 particles surface charge of the electrophoresis showed of method preparation of the present invention; Prepared TiO 2 particles is electronegative in tetrachloro-ethylene through cationic Surfactant CTAB or TEA modification afterproduct; Positively charged in detergent alkylate and IsoparH is then opposite through anionic species surfactant D BS or K12 modification afterproduct.
Modify the TiO 2 particles of preparation with anion surfactant DBS, can be separately implemented at carrying capacity 18.83～43.47mV ,-18.06 corresponding in tetrachloro-ethylene, Isopar H and three kinds of media of detergent alkylate～-50.57mV and-64.89～-the 174.62mV controllable preparation; Modify the TiO 2 particles of preparation with cationic surfactant CTAB, can be separately implemented at carrying capacity-6.79 corresponding in tetrachloro-ethylene, IsoparH and three kinds of media of detergent alkylate～-31.57mV, 20.21～32.51mV and 45.68～154.02mV controllable preparation; Modify the TiO 2 particles of preparation with polymer St/DVB, can be separately implemented at carrying capacity-14.03 corresponding in tetrachloro-ethylene, Isopar H and three kinds of media of detergent alkylate～-80.98mV, 22.27～57.10mV and 42.23～165.45mV controllable preparation.
The deficiency of the tradition research that the present invention remedies; The variation of charged character of quantitative expedition titanium dioxide surface and carrying capacity; A kind of method that is used for the controlled preparation of TiO 2 particles surface charge of electrophoresis showed is provided, through with different types of surfactant modified TiO 2 particles with control its surface charged character; The amount that is incorporated into the charge control agent of titanium dioxide surface through operating key is controlled its surperficial carrying capacity, and method is simple.Reduce the apparent density of TiO 2 particles simultaneously, had the decentralized medium range of choice of broad, improved the compatibility of TiO 2 particles and organic dispersion medium; And the TiO 2 particles good sphericity of preparation; Smooth surface, particle diameter is even, is fit to do electrophoresis particle.
Description of drawings
The result that Fig. 1 observes under a field emission scanning electron microscope and a transmission Electronic Speculum for the titanium dioxide nano-particle of unmodified TiO 2 particles and DBS, CTAB and St/DVB modification.
Fig. 2 is the calibration curve of TiO 2 particles surface charge in tetrachloro-ethylene, Isopar H and detergent alkylate of DBS, CTAB and the St/DVB modification of making, and wherein (a) is tetrachloro-ethylene, (b) is Isopar H, (c) is in the detergent alkylate.
The specific embodiment
Specify method of the present invention and electric charge with embodiment:
With anion surfactant, cationic surfactant or polymer the nano-titania particle surface is modified at first respectively, modified the back particle and be dispersed in the dispersant, its surperficial charged character and carrying capacity production standard curve.Decentralized medium is tetrachloro-ethylene, detergent alkylate or Isopar H.Described anionic species surfactant is neopelex (DBS) or lauryl sodium sulfate (K12); The cationic surfactant is softex kw (CTAB) or triethanolamine (TEA); Polymer class is polymethyl methacrylate (PMMA) or styrene (St)/divinylbenzene (DVB).
Preparation with yin, yang ionic surface active agent modified titanic oxide particle may further comprise the steps:
With 2.00g TiO
2Disperse in the 150mL deionized water for ultrasonic, add concentration respectively and be 0.02%～0.5% surfactant D BS, K12, CTAB and TEA, regulate the pH value to setting value, 70 ℃ of reaction 6h; Product obtains the TiO2 particle that DBS, K12, CTAB and TEA modify respectively through centrifugation under 6500rpm after the washing with alcohol after the freeze drying.
Preparation with polymethyl methacrylate (PMMA) modified titanic oxide particle may further comprise the steps:
With 1.00g TiO
2Be scattered in the 70mL toluene, under the N2 protection, be warming up to 80 ℃, 1.00g methacrylic acid (MAA) is dissolved in the 10mL toluene, in 30min, be added drop-wise in the reaction system, reaction 2h; Again 3.00g methyl methacrylate (MMA) is dissolved in the solution of 15mL toluene and the N of 0.05g～1.00g, the solution that N-methylene-bisacrylamide (MBA) is dissolved in the 20mL ethanol joins in the reactant mixture; Then 0.10gAIBN is dissolved in the 10mL toluene, in 45min, is added drop-wise in the reaction system, reaction 20h under the N2 protection; Product obtains the TiO2 particle that PMMA modifies through centrifugation under 6500rpm after the washing with alcohol after the freeze drying.
Preparation with styrene (St)/divinylbenzene (DVB) modified titanic oxide particle may further comprise the steps:
With 1.00g TiO
2Be scattered in the 100mL toluene, add 0.30g KH-570, the N2 protection is down at 110 ℃ of reaction 10h.Centrifugation under 6500rpm after reaction is accomplished, lower floor's solid is ultrasonic dispersion 1h in 80mL ethanol.1.33gPVP, 1.33gSt and 1.33gDVB are dissolved in the solution that the MBA of solution and 0.05g～1.00g in the 30mL ethanol is dissolved in the 20mL ethanol join in the above-mentioned ethanol system, stir.Under the N2 protection, be warming up to 80 ℃, 0.13g AIBN is dissolved in the 10mL ethanol, in 1h, be added drop-wise in the reaction system, reaction 6h.Product obtains the TiO2 particle that St/DVB modifies through centrifugation under 8000rpm after the washing with alcohol after the freeze drying.
Transfer to 2～3 with pH value in DBS and the K12 modification in DBS, K12, CTAB and the preparation of TEA modified titanic oxide particle surface electric charge, pH value transfers to 9～10 in CTAB and the TEA modification.
Use the charge control agent of being selected for use in the polymer-modified TiO 2 particles surface charge preparation to be MBA, its addition is 0.05g～1.00g.
By MAA titanium dioxide surface is modified earlier in the preparation of PMMA modified titanic oxide surface charge, again at its surface aggregate MMA and MBA.
By KH-570 titanium dioxide surface is modified earlier in the preparation of St/DVB modified titanic oxide particle surface electric charge, again at its surface aggregate St, DVB and MBA.
Through the TiO 2 particles surface being modified to control the charged character on its surface, the TiO that the cationic Surfactant CTAB of final preparation and TEA modify with different types of surfactant
2Product is electronegative in tetrachloro-ethylene, positively charged in detergent alkylate and Isopar H, and anionic species surfactant D BS and K12 modified outcome are then opposite.
Modify the TiO 2 particles of preparation with anion surfactant DBS, can be separately implemented at carrying capacity 18.83～43.47mV ,-18.06 corresponding in tetrachloro-ethylene, Isopar H and three kinds of media of detergent alkylate～-50.57mV and-64.89～-the 174.62mV controllable preparation; Modify the TiO 2 particles of preparation with cationic surfactant CTAB, can be separately implemented at carrying capacity-6.79 corresponding in tetrachloro-ethylene, IsoparH and three kinds of media of detergent alkylate～-31.57mV, 20.21～32.51mV and 45.68～154.02mV controllable preparation; Modify the TiO 2 particles of preparation with polymer St/DVB, can be separately implemented at carrying capacity-14.03 corresponding in tetrachloro-ethylene, Isopar H and three kinds of media of detergent alkylate～-80.98mV, 22.27～57.10mV and 42.23～165.45mV controllable preparation.
Instance 1
Be prepared in according to the calibration curve of Fig. 2 that surperficial charged character is positivity in the tetrachloro-ethylene, charged value is the titanium dioxide electrophoresis particle of 26.29mV, and method is following:
With 2.00g TiO
2Be scattered in the 150mL deionized water, stir, add 0.02gDBS, regulate the pH value, be warming up to 70 ℃ of reaction 6h to 2-3.Product centrifugalizes under 6500rpm for several times through washing with alcohol, obtains solid dry 48h under 60 ℃, and the surperficial charged character in tetrachloro-ethylene that obtains the DBS modification is positivity, and charged value is the titanium dioxide electrophoresis particle of 26.29mV.
Instance 2
Be prepared in according to the calibration curve of Fig. 2 that surperficial charged character is negativity in the tetrachloro-ethylene, charged value is the titanium dioxide electrophoresis particle of 16.78mV, and method is following:
With 2.00g TiO
2Be scattered in the 150mL deionized water, stir, add 0.50gCTAB, regulate the pH value, be warming up to 70 ℃ of reaction 6h to 9-10.Product centrifugalizes under 6500rpm for several times through washing with alcohol, obtains solid dry 48h under 60 ℃, and the surperficial charged character in tetrachloro-ethylene that obtains the CTAB modification is negativity, and charged value is the titanium dioxide electrophoresis particle of 16.78mV.
Instance 3
Be prepared in according to the calibration curve of Fig. 2 that surperficial charged character is positivity among the Isopar H, charged value is the titanium dioxide electrophoresis particle of 46.27mV, and method is following:
With 2.00g TiO
2Be scattered in the 150mL deionized water, stir, add 0.30gCTAB, regulate the pH value, be warming up to 70 ℃ of reaction 6h to 9-10.Product centrifugalizes under 6500rpm for several times through washing with alcohol, obtains solid dry 48h under 60 ℃, and the surperficial charged character in Isopar H that obtains the CTAB modification is positivity, and charged value is the titanium dioxide electrophoresis particle of 46.27mV.
Instance 4
Be prepared in according to the calibration curve of Fig. 2 that surperficial charged character is negativity among the Isopar H, charged value is the titanium dioxide electrophoresis particle of 30.96mV, and method is following:
With 2.00g TiO
2Be scattered in the 150mL deionized water, stir, add 0.07gDBS, regulate the pH value, be warming up to 70 ℃ of reaction 6h to 2-3.Product centrifugalizes under 6500rpm for several times through washing with alcohol, obtains solid dry 48h under 60 ℃, and the surperficial charged character in Isopar H that obtains the DBS modification is negativity, and charged value is the titanium dioxide electrophoresis particle of 30.96mV.
Instance 5
Be prepared in according to the calibration curve of Fig. 2 that surperficial charged character is positivity in the detergent alkylate, charged value is the titanium dioxide electrophoresis particle of 41.11mV, and method is following:
(1) with 1.00g TiO
2Be scattered in the 100mL toluene, add 0.30g KH-570, stir N
2Protection is down at 110 ℃ of reaction 10h.Centrifugation under 6500rpm obtained solid ultrasonic dispersion 1h in 80mL ethanol after reaction was accomplished.
(2) 1.33g PVP, 1.33gSt and 1.33gDVB are dissolved in the solution that the MBA of solution and 0.40g in the 30mL ethanol is dissolved in the 20mL ethanol and join in the above-mentioned system, dispersed with stirring is even.At N
2Be warming up to 80 ℃ under the protection, the solution that 0.13g AIBN is dissolved in the 10mL ethanol is added drop-wise in the reaction system polymerisation 6h in 1h.
(3) product centrifugalizes under 8000rpm for several times through washing with alcohol, obtains solid dry 48h under 60 ℃, and the surperficial charged character in detergent alkylate that obtains the St/DVB modification is positivity, and charged value is the titanium dioxide electrophoresis particle of 41.11mV.
Instance 6
Be prepared in according to the calibration curve of Fig. 2 that surperficial charged character is negativity in the detergent alkylate, charged value is the titanium dioxide electrophoresis particle of 119.28mV, and method is following:
With 2.00g TiO
2Be scattered in the 150mL deionized water, stir, add 0.10gDBS, regulate the pH value, be warming up to 70 ℃ of reaction 6h to 2-3.Product centrifugalizes under 6500rpm for several times through washing with alcohol, obtains solid dry 48h under 60 ℃, and the surperficial charged character in detergent alkylate that obtains the DBS modification is negativity, and charged value is the titanium dioxide electrophoresis particle of 119.28mV.
Claims (5)
1. TiO 2 particles surface charge controllable preparation method that is used for electrophoresis showed; It is characterized in that: with anion surfactant, cationic surfactant or polymer the nano-titania particle surface is modified at first respectively; Modify the back particle and be dispersed in the dispersant production standard curve.
2. the method for claim 1 is characterized in that described dispersant is the dispersion among tetrachloro-ethylene, detergent alkylate or the Isopar H.
3. the method for claim 1 is characterized in that described anionic species surfactant is neopelex (DBS) or lauryl sodium sulfate (K12); The cationic surfactant is softex kw (CTAB) or triethanolamine (TEA); Polymer class is polymethyl methacrylate (PMMA) or styrene (St)/divinylbenzene (DVB).
4. adopt the TiO 2 particles surface charge of electrophoresis showed of the method preparation of claim; It is characterized in that prepared TiO 2 particles is electronegative in tetrachloro-ethylene through cationic Surfactant CTAB or TEA modification afterproduct; Positively charged in detergent alkylate and Isopar H is then opposite through anionic species surfactant D BS or K12 modification afterproduct.
5. TiO 2 particles surface charge as claimed in claim 4; It is characterized in that modifying the TiO 2 particles of preparation with anion surfactant DBS, can be separately implemented at carrying capacity 18.83～43.47mV ,-18.06 corresponding in tetrachloro-ethylene, Isopar H and three kinds of media of detergent alkylate～-50.57mV and-64.89～-the 174.62mV controllable preparation; Modify the TiO 2 particles of preparation with cationic surfactant CTAB, can be separately implemented at carrying capacity-6.79 corresponding in tetrachloro-ethylene, Isopar H and three kinds of media of detergent alkylate～-31.57mV, 20.21～32.51mV and 45.68～154.02mV controllable preparation; Modify the TiO 2 particles of preparation with polymer St/DVB, can be separately implemented at carrying capacity-14.03 corresponding in tetrachloro-ethylene, Isopar H and three kinds of media of detergent alkylate～-80.98mV, 22.27～57.10mV and 42.23～165.45mV controllable preparation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102379080A CN102430370A (en) | 2011-08-18 | 2011-08-18 | Titanium dioxide particle surface charge for electrophoretic display and controllable preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102379080A CN102430370A (en) | 2011-08-18 | 2011-08-18 | Titanium dioxide particle surface charge for electrophoretic display and controllable preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102430370A true CN102430370A (en) | 2012-05-02 |
Family
ID=45978935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102379080A Pending CN102430370A (en) | 2011-08-18 | 2011-08-18 | Titanium dioxide particle surface charge for electrophoretic display and controllable preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102430370A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017092644A1 (en) * | 2015-12-01 | 2017-06-08 | 深圳市国华光电科技有限公司 | Method for inducing titanium dioxide nano particles to form pearl chain structure through self-assembly |
| 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 |
| CN110527040A (en) * | 2019-09-04 | 2019-12-03 | 中节能万润股份有限公司 | A kind of electrophoresis showed white particles and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58137441A (en) * | 1982-02-08 | 1983-08-15 | Hodogaya Chem Co Ltd | Preparation of microcapsule slurry |
-
2011
- 2011-08-18 CN CN2011102379080A patent/CN102430370A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58137441A (en) * | 1982-02-08 | 1983-08-15 | Hodogaya Chem Co Ltd | Preparation of microcapsule slurry |
Non-Patent Citations (2)
| Title |
|---|
| 《北京化工大学学报》 20061231 彭旭慧等 "TiO2的有机改性及其电泳性能" 第11-14页 1-5 第33卷, 第3期 * |
| 彭旭慧等: ""TiO2的有机改性及其电泳性能"", 《北京化工大学学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017092644A1 (en) * | 2015-12-01 | 2017-06-08 | 深圳市国华光电科技有限公司 | Method for inducing titanium dioxide nano particles to form pearl chain structure through self-assembly |
| 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 |
| US11124655B2 (en) | 2017-09-20 | 2021-09-21 | Guangzhou Oed Technologies, Inc. | Surface-modified pigment particles for electrophoretic display and electrophoretic display device |
| CN110527040A (en) * | 2019-09-04 | 2019-12-03 | 中节能万润股份有限公司 | A kind of electrophoresis showed white particles and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103193916B (en) | Preparation method of polymeric microspheres for electrophoretic display | |
| CN107954429B (en) | Silicon dioxide hollow microsphere, preparation method thereof and application thereof in heat-insulating coating | |
| CN102264799B (en) | Composite particles, process for producing the composite particles, hollow particles, process for producing the hollow particles, and use of the hollow particles | |
| CN106519126A (en) | Fluorosilicone-modified polyacrylate emulsion as well as preparing method and application thereof | |
| CN105700265B (en) | Color electrophoretic display with electric field response photonic crystal properties and preparation method thereof and display methods | |
| CN102430370A (en) | Titanium dioxide particle surface charge for electrophoretic display and controllable preparation method | |
| Yuan et al. | Organic pigment particles coated with titania via sol− gel process | |
| CN101624188B (en) | Nanometer silicon dioxide and titanium dioxide compound microparticle and preparation method thereof | |
| CN112226221B (en) | Nano silicon dioxide oil displacement agent and preparation method and application thereof | |
| JP5419094B2 (en) | Method for producing organic-inorganic hybrid particles and method for producing inorganic hollow particles | |
| CN103372410A (en) | Microcapsule used for cladding solid-liquid phase and preparation method thereof | |
| CN103833941A (en) | Comb type polycarboxylic acid efficient ceramic water reducer and preparation method and application thereof | |
| CN105110343A (en) | Method for rapid preparation of monodisperse ordered mesoporous silicon oxide hollow sphere | |
| CN102698756B (en) | Fe3O4/TiO2 nano magnetic compound and preparation method thereof | |
| CN113877563A (en) | Cerium-coated titanium dioxide and preparation method thereof | |
| CN1446827A (en) | Method for synthesizing nano microsphere of inorganic/polymer huds with narrow decentralization | |
| CN104069818B (en) | The preparation method of the radial magnetic core-shell mesoporous silicon material of phenyl functionalization | |
| CN108751734B (en) | Silicon dioxide hollow sphere single-layer film and preparation method thereof | |
| EP2874947A1 (en) | Method for producing hollow particles, hollow particle, antireflection coating, and optical element | |
| CN100383196C (en) | Method for preparing conducting particles for composite electrically-conducting paint using microemulsion technology | |
| CN105145568A (en) | Preparation method of reproducible SiO2/PAM core-shell composite nano antibacterial particles | |
| CN106479480A (en) | A kind of Nano microsphere preparation method with core/shell type composite construction | |
| CN102532976A (en) | Aqueous high-content nanometer calcium carbonate dispersoid and preparation method thereof | |
| CN103288092B (en) | A kind of preparation method of spherical macroporous silica shell material | |
| CN114272864B (en) | White particle, black-white electronic ink microcapsule and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120502 |