CN109987634A - A kind of WO3The preparation method of aeroge - Google Patents
A kind of WO3The preparation method of aeroge Download PDFInfo
- Publication number
- CN109987634A CN109987634A CN201711486992.3A CN201711486992A CN109987634A CN 109987634 A CN109987634 A CN 109987634A CN 201711486992 A CN201711486992 A CN 201711486992A CN 109987634 A CN109987634 A CN 109987634A
- Authority
- CN
- China
- Prior art keywords
- aeroge
- microgravity
- preparation
- acid
- drying
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G41/00—Compounds of tungsten
- C01G41/02—Oxides; Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
Abstract
The invention discloses a kind of preparation methods of aeroge, which is characterized in for preparing colloidal sol step, gel step, drying steps including microgravity environment.Present invention proposition prepares colloidal sol in microgravity environment, it eliminates and settles lamination problem caused by gravity, obtain the uniform wet gel of nano-pore skeleton structure, to realize that aerogel structure homogeneity or subsequent drying lay the foundation, improve macro property, application field, wide market are widened, and there is theory directive significance to aeroge Study on Microstructure.
Description
Technical field
The present invention relates to a kind of WO3The preparation method of aeroge belongs to novel inorganic nano-porous materials field.
Technical background
WO3It is the n-type semiconductor haveing excellent performance, band-gap energy is 2.5 ~ 3.5eV, is lower than the visible light of 500nm in wavelength
There is excellent photocatalytic activity in range, can be applied to the fields such as degradation of organic dyes, sewage treatment；And WO3To NOx、
H2S、NH3Equal gases have absorption denaturation characteristic, can be used for gas sensor and electrochromic material；WO3Aeroge has high
Specific surface area, more active sites can be provided, and then significantly improve WO3Photocatalysis performance and gas-discoloration, electricity
Discoloration is caused, is had a extensive future.
WO3The preparation process of aeroge mainly includes the preparation of wet gel and two processes of drying of wet gel.Wet gel
Preparation be sol gel process, be that gel three-dimensional spacial framework is formed by hydrolysis and polycondensation reaction
Tungstates is hydrolyzed under catalytic condition generate wolframic acid first by process, and then wolframic acid generates the primary of colloidal sol by hydroxyl condensation
And secondary；Then further crosslinking obtains three-dimensional net structure to sol particles on three-dimensional space, and solvent molecule is blocked
In nano aperture, wet gel is formed.Solvent molecule is gone by techniques such as supercritical drying, freeze-drying or constant pressure and dries
It removes, forms lightweight nano-pore structure material.However in the preparation process of wet gel, since sol particles are with a certain range of
Particle diameter distribution and molecular weight distribution, under ground gravity environmental activity, sol particles meeting distribution gradient is difficult to be uniformly distributed,
Cause the gelinite three-dimensional space network structure obtained after gel uneven, the aperture of the capillary especially inside gel is uneven
It is even, gel drying process is influenced, the macro property of aeroge is restricted.
Microgravity environment refers to that under gravity the apparent weight of system is much smaller than the environment of its actual weight.Ground
Ball surface is 1G gravity environment, and space is in acceleration caused by vacuum state, gravity or other external force and is no more than 10-5~
10-4G, synthetic material is prepared under this environment can eliminate and settle lamination problem caused by gravity, improve phase interface problem etc..
Summary of the invention
It is an object of the invention to propose a kind of WO3The preparation method of aeroge utilizes microgravity environment, eliminate gravity
Caused sedimentation lamination problem obtains the uniform wet gel of nano-pore skeleton structure, for realize aerogel structure homogeneity or after
Continuous drying lays the foundation, to break through the bottleneck problem that ground environment prepares aeroge, obtains that microstructure is controllable, macro property
The aerogel material of exceptional.
A kind of WO of the invention3The preparation method of aeroge, comprising the following steps:
(1) microgravity environment prepares colloidal sol step, and in microgravity environment, tungstates, deionized water, organic solvent and acid are urged
Agent is mixed, and obtains colloidal sol；
(2) microgravity environment prepares gel step, and base catalyst is added in the colloidal sol of step (1), and stirring, gel is coagulated
Colloid；
(3) gelinite that step (2) obtains is dried, obtains aeroge by drying steps；
The tungstates, deionized water, organic solvent, acid catalyst, base catalyst molar ratio be 1:0.5~15:0.5~
15:0.0025~0.5:0.0025~0.5.
Further, the microgravity environment is in freely falling body microgravity simulation system, parabolic flight microgravity mould
Intend system, water floats container microgravity simulation system, any in suspension type microgravity simulation system, gas suspension microgravity simulation system
It is realized in system.
Further, the microgravity environment is realized in spacecraft.
Further, the drying is one of constant pressure and dry, supercritical drying, subcritical drying, freeze-drying.
Further, the tungstates is the mixture of one or more of sodium tungstate, potassium tungstate, ammonium tungstate.
Further, the acid catalyst is one of hydrochloric acid, sulfuric acid, acetic acid, oxalic acid, nitric acid, hydrofluoric acid etc..
Further, the base catalyst is one of sodium hydroxide, potassium hydroxide, ammonium hydroxide, polyethyleneimine.
It further, further include Aging Step and/or solvent swap step after the step (2) and before step (3)
And/or modification procedure.
Further, the organic solvent be one of methanol, ethyl alcohol, isopropanol, the tert-butyl alcohol, ethylene glycol, glycerol or
It is a variety of.
It is proposed by the present invention that WO is prepared in microgravity environment3Colloidal sol can be eliminated and settle lamination problem caused by gravity,
And then the uniform wet gel of nano-pore skeleton structure is obtained, to realize WO3Base is established in aerogel structure homogeneity or subsequent drying
Plinth improves macro property, widens application field, wide market, and to WO3Aeroge Study on Microstructure has theory
Directive significance.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below to specific reality of the invention
The mode of applying is described in detail.In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention.But
The invention can be embodied in many other ways as described herein, and those skilled in the art can be without prejudice to this hair
Similar improvement is done in the case where bright intension, therefore the present invention is not limited to the specific embodiments disclosed below.
A kind of WO3The preparation method of aeroge, comprising the following steps:
(1) microgravity environment prepares colloidal sol step, and in microgravity environment, tungstates, deionized water, organic solvent and acid are urged
Agent is mixed, and obtains colloidal sol；
(2) microgravity environment prepares gel step, and base catalyst is added in the colloidal sol of step (1), and stirring, gel is coagulated
Colloid；
(3) gelinite that step (2) obtains is dried, obtains aeroge by drying steps；
The tungstates, deionized water, organic solvent, acid catalyst, base catalyst molar ratio be 1:0.5~15:0.5~
15:0.0025~0.5:0.0025~0.5.
The study found that tungstates-deionized water-organic solvent ternary system mutual solubility significantly mentions under microgravity environment
Height eliminates the microcosmic lamination problem of the three as caused by gravity, it is several to significantly improve contact of the tungstates with deionized water
Rate improves the kinetic rate of colloidal sol reaction, eliminates convection current and the buoyancy influence and space to gel particle particle diameter distribution point
Cloth influences, and lays the foundation to obtain the uniform gelinite of three-dimensional net structure.Also, the three-dimensional network bone obtained by the means
The capillary aperture distributed area of frame is very narrow, and the capillary gradient generated in the drying process is almost 0, this greatly reduces dry
Dry difficulty, it might even be possible to omit solvent replacing process, although the intracorporal solvent surface tension of gel is higher, normal pressure can also be passed through
Rapid draing obtains bulk WO3Aeroge, superior performance, wide market.
In the present embodiment, the microgravity environment is in freely falling body microgravity simulation system, parabolic flight microgravity
Simulation system, water float container microgravity simulation system, suspension type microgravity simulation system, appoint in gas suspension microgravity simulation system
It is realized in one system.
In this way, microgravity environment is the simulation space environment under the conditions of earth, the simulation of freely falling body microgravity tower microgravity
System is by executing the movement of falling object in microgravity tower, to generate a kind of method of microgravity test environment, advantage
Be space microgravity environment simulation precision it is higher, it is safe and reliable, reusable, and the microgravity of three-dimensional space can be carried out
Experiment；
Parabolic flight microgravity simulation system is the method that microgravity environment is created using parabola maneuvering flight, and advantage is
The simulation precision of space microgravity environment is higher, and zero gravity airplane is reusable, can carry out the microgravity experiment of three-dimensional space；
It is by the buoyancy of water come the gravity of balancing mechanical arm itself that water, which floats container microgravity simulation system, floating by precisely adjusting
The buoyancy of power device makes upward water buoyancy and downward gravitational equilibrium suffered by object, generates the floating state of stochastic equilibrium, advantage
For the microgravity test that three-dimensional space may be implemented, and test period is unrestricted；
Suspension type microgravity simulation system is that aircraft self gravity is balanced by the vertical tension of hang spring, due to its structure phase
It to simple, and is easily achieved, therefore using extensively, principle is and to be offset using counterweight winged by rope mechanism and pulley blocks
The gravity of row device itself, that is, use the gravity of hang spring system balance aircraft straight down, by will by hang spring, pulley, guide rail,
The composition such as truss makes hang spring pulling force be consistently equal to hang the gravity of aircraft using the control method of servo-actuated identical tension；
The method that gas suspension microgravity simulation system mainly passes through gas suspension lifts aircraft on smooth platform, that is, holds in the palm
Lifting force and gravity offset a kind of method to realize microgravity simulation, principle be by plane thrust air-bearing, will be by air pump
Gas after air chest divides is sprayed through plane thrust air-bearing, using gas pressure, floats test objective by air film
Aircraft, and the lubrication gas pressure by changing throttle orifice, offset self weight and the effect of load force always, make plane thrust axis
It is in the state of suspension, the frictional force and adhesion strength that at this moment axis is subject to are almost 0, so being supported on axial rotation on axis and axis
Completely freely, move freely aircraft on entire smooth platform, air bearing resistance can reach within 0.2N, and precision is very
Height, its advantage is that construction period is short, at low cost, precision is high, it is easy to accomplish and maintenance.By the size for designing plate thrust bearing
It can be realized up to several tons of aircraft microgravity simulation test, and experimental period is unrestricted, be by replacing interface unit
Recycling can be achieved, reliability and robustness are high, and it is adaptable, the structure of aircraft is not limited too much.
In the present embodiment, the microgravity environment is realized in spacecraft.
In this way, spacecraft includes the space in the space environment such as satellite, space station, carrier rocket, spaceship
Or aircraft.
In the present embodiment, the drying is one of constant pressure and dry, supercritical drying, subcritical drying, freeze-drying.
In the present embodiment, the tungstates is the mixture of one or more of sodium tungstate, potassium tungstate, ammonium tungstate.
In the present embodiment, the acid catalyst is one of hydrochloric acid, sulfuric acid, acetic acid, oxalic acid, nitric acid, hydrofluoric acid etc..
In the present embodiment, the base catalyst is one of sodium hydroxide, potassium hydroxide, ammonium hydroxide, polyethyleneimine.
It further include Aging Step and/or solvent displacement step in the present embodiment, after the step (2) and before step (3)
Rapid and/or modification procedure.In this way, the three-dimensional network skeleton of aeroge can be improved in Aging Step, change aperture；Solvent displacement step
Suddenly subsequent drying efficiency can be improved；Modification procedure can be with directed change aeroge surface functional group, such as makes aeroge surface
With hydrophobic property.
In the present embodiment, the organic solvent is one of methanol, ethyl alcohol, isopropanol, the tert-butyl alcohol, ethylene glycol, glycerol
Or it is a variety of.
It is proposed by the present invention that WO is prepared in microgravity environment3Colloidal sol can be eliminated and settle lamination problem caused by gravity,
And then the uniform wet gel of nano-pore skeleton structure is obtained, to realize WO3Base is established in aerogel structure homogeneity or subsequent drying
Plinth improves macro property, widens application field, wide market, and to WO3Aeroge Study on Microstructure has theory
Directive significance.
With specific embodiment, the present invention will be further described below, but protection scope is not limited by the following examples.
Embodiment 1:
(1) under microgravity environment, colloidal sol preparation facilities the preparation of wolframic acid colloidal sol: is placed on freely falling body microgravity tower microgravity
It is in molar ratio 1:0.5:0.5:2.5 × 10 by sodium tungstate, ethyl alcohol, deionized water, hydrochloric acid in simulation system-3It is mixed,
Obtain wolframic acid colloidal sol；
(2) under microgravity environment, the preparation of gel: in freely falling body microgravity tower microgravity simulation system, in step (1)
It is 2.5 × 10 that molar ratio is added in wolframic acid colloidal sol-3Sodium hydrate aqueous solution, stirring, cast into mold, gel；
(3) under gravity environment, constant pressure and dry: in air dry oven, 100 DEG C of quick blast heating 1h obtain WO3Aeroge,
Its specific surface area is 741m2/g。
Embodiment 2:
(1) under microgravity environment, colloidal sol preparation facilities the preparation of wolframic acid colloidal sol: is placed on parabolic flight microgravity simulation system
In system, in molar ratio it is that 1:15:15:0.5 is mixed by potassium tungstate, ethyl alcohol, deionized water, hydrochloric acid, obtains wolframic acid colloidal sol；
(2) under microgravity environment, the preparation of gel: molten in the wolframic acid of step (1) in parabolic flight microgravity simulation system
The ammonium hydroxide that molar ratio is 0.5 is added in glue, stirring is cast into mold, gel；
(3) under gravity environment, supercritical drying: gel is put into autoclave, and ethanol in proper amount is added and is situated between as supercritical drying
Matter, the nitrogen of preliminary filling 2MPa, then 260 DEG C are heated to the heating rate of 50 DEG C/h, after keeping the temperature 2h, then it is slow with the speed of 2MPa/h
On The Drug Release pressure is re-filled with 10 ~ 30min of nitrogen finally to remove remaining ethyl alcohol in kettle, is slowly dropped to temperature up to being zero
Room temperature obtains WO3Aeroge, specific surface area 803m2/g。
Embodiment 3:
(1) under microgravity environment, the preparation of wolframic acid colloidal sol: colloidal sol preparation facilities is placed on water and floats container microgravity simulation system
In, it is in molar ratio 1:0.8:4:1 × 10 by ammonium tungstate, isopropanol, deionized water, citric acid-3It is mixed；
(2) under microgravity environment, the preparation of gel: floating in container microgravity simulation system in water, to the wolframic acid colloidal sol of step (1)
In continuously add molar ratio be 2 × 10-3Potassium hydroxide aqueous solution, stirring, gel；
(3) constant pressure and dry: in gravity environment, in air dry oven, the wet gel that step (2) is obtained carry out 60 DEG C, 80 DEG C,
120 DEG C of heat treatments, handle 1h respectively, obtain WO3Aeroge, specific surface area 733m2/g。
Embodiment 4:
(1) under microgravity environment, colloidal sol preparation facilities the preparation of wolframic acid colloidal sol: is placed on suspension type microgravity simulation system
In, it is in molar ratio 1:6:4:2 × 10 by sodium tungstate, ethyl alcohol, deionized water, sulfuric acid-3It is mixed；
(2) under microgravity environment, the preparation of gel: in suspension type microgravity simulation system, it is 3 × 10 that molar ratio, which is added,-3's
Ammonium hydroxide is configured to wolframic acid colloidal sol, is cast into mold, gel；
(3) it is freeze-dried: in gravity environment, freezing processing being carried out to wet gel, then quickly heating, so that the crystallization in gel
Solvent distillation, obtain WO3Aeroge, specific surface area 692m2/g。
Embodiment 5:
(1) in microgravity environment, colloidal sol preparation facilities the preparation of wolframic acid colloidal sol: is placed on gas suspension microgravity simulation system
In, it is in molar ratio 1:6:4:4 × 10 by ammonium tungstate, ethyl alcohol, deionized water, acetic acid-3It is mixed,
(2) in microgravity environment, the preparation of gel: in gas suspension microgravity simulation system, into the wolframic acid colloidal sol of step (1)
It is 3 × 10 that molar ratio, which is added,-3Ammonium hydroxide, gel；
(3) under gravity environment, supercritical drying: gel is put into autoclave, and ethanol in proper amount is added and is situated between as supercritical drying
Matter, the nitrogen of preliminary filling 2MPa, then 260 DEG C are heated to the heating rate of 50 DEG C/h, after keeping the temperature 2h, then it is slow with the speed of 2MPa/h
On The Drug Release pressure is re-filled with 10 ~ 30min of nitrogen finally to remove remaining ethyl alcohol in kettle, is slowly dropped to temperature up to being zero
Room temperature obtains WO3Aeroge, specific surface area 658m2/g。
Claims (9)
1. a kind of WO3The preparation method of aeroge, which comprises the following steps:
(1) microgravity environment prepares colloidal sol step, and in microgravity environment, tungstates, deionized water, organic solvent and acid are urged
Agent is mixed, and obtains colloidal sol；
(2) microgravity environment prepares gel step, and base catalyst is added in the colloidal sol of step (1), and stirring, gel is coagulated
Colloid；
(3) gelinite that step (2) obtains is dried, obtains aeroge by drying steps；
The tungstates, deionized water, organic solvent, acid catalyst, base catalyst molar ratio be 1:0.5~15:0.5~
15:0.0025~0.5:0.0025~0.5.
2. a kind of WO according to claim 13The preparation method of aeroge, which is characterized in that the microgravity environment be
Freely falling body microgravity simulation system, parabolic flight microgravity simulation system, water float container microgravity simulation system, suspension type
It is realized in any system in microgravity simulation system, gas suspension microgravity simulation system.
3. a kind of WO according to claim 13The preparation method of aeroge, which is characterized in that the microgravity environment be
It is realized in spacecraft.
4. a kind of WO according to claim 13The preparation method of aeroge, which is characterized in that the drying is dry for normal pressure
One of dry, supercritical drying, subcritical drying, freeze-drying.
5. a kind of WO according to claim 13The preparation method of aeroge, which is characterized in that the tungstates is wolframic acid
The mixture of one or more of sodium, potassium tungstate, ammonium tungstate.
6. a kind of WO according to claim 13The preparation method of aeroge, which is characterized in that the acid catalyst is salt
One of acid, sulfuric acid, acetic acid, oxalic acid, nitric acid, hydrofluoric acid.
7. a kind of WO according to claim 13The preparation method of aeroge, which is characterized in that the base catalyst is hydrogen-oxygen
Change one of sodium, potassium hydroxide, ammonium hydroxide, polyethyleneimine.
8. a kind of WO according to claim 13The preparation method of aeroge, which is characterized in that after the step (2) and
It further include Aging Step and/or solvent swap step and/or modification procedure before step (3).
9. a kind of WO according to claim 13The preparation method of aeroge, which is characterized in that the organic solvent is first
One of alcohol, ethyl alcohol, isopropanol, the tert-butyl alcohol, ethylene glycol, glycerol are a variety of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711486992.3A CN109987634A (en) | 2017-12-30 | 2017-12-30 | A kind of WO3The preparation method of aeroge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711486992.3A CN109987634A (en) | 2017-12-30 | 2017-12-30 | A kind of WO3The preparation method of aeroge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109987634A true CN109987634A (en) | 2019-07-09 |
Family
ID=67110789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711486992.3A Pending CN109987634A (en) | 2017-12-30 | 2017-12-30 | A kind of WO3The preparation method of aeroge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109987634A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1300435A1 (en) * | 2000-07-07 | 2003-04-09 | Shizuko Sato | Ultrafine metal particle/polymer hybrid material |
| CN1613777A (en) * | 2004-11-11 | 2005-05-11 | 北京科技大学 | Preparation for nanometer anhydrous wolframic acid powder |
| CN101381106A (en) * | 2007-09-05 | 2009-03-11 | 西南交通大学 | Method for preparing nano tungsten trioxide powder |
| CN102070195A (en) * | 2010-12-20 | 2011-05-25 | 大连工业大学 | Mesoporous WO3 aerogel and preparation method thereof |
| CN103880087A (en) * | 2014-04-03 | 2014-06-25 | 西南大学 | Tungsten oxide aerogel as well as preparation method and application thereof |
| CN104689784A (en) * | 2015-02-13 | 2015-06-10 | 大连工业大学 | SiO2 composite aerogel material loaded with photocatalyst and preparation method of SiO2 composite aerogel material |
| CN105502503A (en) * | 2016-01-11 | 2016-04-20 | 大连工业大学 | Hexagonal crystal tungsten bronze short rod nanoparticles and preparation method thereof |
| CN105536655A (en) * | 2015-12-11 | 2016-05-04 | 中国科学院兰州化学物理研究所 | Rapid preparation method for aerogel material |
| CN106186034A (en) * | 2016-07-05 | 2016-12-07 | 南京工业大学 | A kind of La2o3the preparation method of aerogel particle |
-
2017
- 2017-12-30 CN CN201711486992.3A patent/CN109987634A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1300435A1 (en) * | 2000-07-07 | 2003-04-09 | Shizuko Sato | Ultrafine metal particle/polymer hybrid material |
| CN1613777A (en) * | 2004-11-11 | 2005-05-11 | 北京科技大学 | Preparation for nanometer anhydrous wolframic acid powder |
| CN101381106A (en) * | 2007-09-05 | 2009-03-11 | 西南交通大学 | Method for preparing nano tungsten trioxide powder |
| CN102070195A (en) * | 2010-12-20 | 2011-05-25 | 大连工业大学 | Mesoporous WO3 aerogel and preparation method thereof |
| CN103880087A (en) * | 2014-04-03 | 2014-06-25 | 西南大学 | Tungsten oxide aerogel as well as preparation method and application thereof |
| CN104689784A (en) * | 2015-02-13 | 2015-06-10 | 大连工业大学 | SiO2 composite aerogel material loaded with photocatalyst and preparation method of SiO2 composite aerogel material |
| CN105536655A (en) * | 2015-12-11 | 2016-05-04 | 中国科学院兰州化学物理研究所 | Rapid preparation method for aerogel material |
| CN105502503A (en) * | 2016-01-11 | 2016-04-20 | 大连工业大学 | Hexagonal crystal tungsten bronze short rod nanoparticles and preparation method thereof |
| CN106186034A (en) * | 2016-07-05 | 2016-12-07 | 南京工业大学 | A kind of La2o3the preparation method of aerogel particle |
Non-Patent Citations (1)
| Title |
|---|
| 王静: ""微重力对胶原纤维化和羟基磷灰石晶体生长的影响研究"", 《中国优秀博硕士学位论文全文数据库(硕士)医药卫生科技辑》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Randall et al. | Tailoring mechanical properties of aerogels for aerospace applications | |
| Sam et al. | Recent development in the fabrication of self-healing superhydrophobic surfaces | |
| US10815355B2 (en) | Silicone porous body and method of producing the same | |
| CN107235744B (en) | Preparation method of graphene-silicon dioxide aerogel | |
| EP3000931A1 (en) | Heat insulation sheet and method of producing the same | |
| CN109985578A (en) | A kind of preparation method of composite aerogel | |
| US11618807B2 (en) | Film with void spaces bonded through catalysis and method of producing the same | |
| CN107055556B (en) | A kind of hydrophilic silicon dioxide aerogel microball and preparation method thereof | |
| CN107629491B (en) | Mesoporous SiO for flexible substrate2Wear-resistant anti-reflection coating and preparation method thereof | |
| CN104987803B (en) | Anti-freeze ionic liquid gel film and preparation method thereof | |
| CN108084376B (en) | Preparation method of core-shell type nano silicon dioxide/fluorine-containing polyacrylate soap-free emulsion | |
| Lin et al. | Characterization of sol-gel ORMOSIL antireflective coatings from phenyltriethoxysilane and tetraethoxysilane: Microstructure control and application | |
| CN105602545A (en) | Preparation method of monodisperse quantum dot micro spheres with optical gain property | |
| CN113480740B (en) | Preparation method of adjustable amphiphobic filler for silicone rubber and preparation of silicone rubber membrane | |
| CN107121714B (en) | A kind of colour generation has the free from flaw photonic crystal and preparation method thereof of low angle dependence | |
| Ren et al. | Transparent, robust, and machinable hybrid silica aerogel with a “rigid-flexible” combined structure for thermal insulation, oil/water separation, and self-cleaning | |
| CN111170323A (en) | Silica aerogel microsphere wrapping/releasing oily substances and preparation method thereof | |
| CN109985669A (en) | A kind of doping TiO2The preparation method of aeroge | |
| CN111848205A (en) | Method for preparing high-temperature-resistant aerogel heat-insulating material by normal-pressure drying | |
| CN109987634A (en) | A kind of WO3The preparation method of aeroge | |
| CN109987626A (en) | A kind of transparent TiO2The preparation method of aeroge | |
| CN109987611A (en) | A kind of preparation method of aeroge | |
| CN109987610A (en) | A kind of preparation method of aeroge | |
| CN109665720A (en) | A kind of extra-low refractive index SiO2The preparation method of antireflective coating | |
| Wang et al. | Hollow particles templated from Pickering emulsion with high thermal stability and solvent resistance: Young investigator perspective |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190709 |
|
| WD01 | Invention patent application deemed withdrawn after publication |