CN106380082B - A kind of anti-fog coating based on core-shell structure - Google Patents
A kind of anti-fog coating based on core-shell structure Download PDFInfo
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- CN106380082B CN106380082B CN201610709531.7A CN201610709531A CN106380082B CN 106380082 B CN106380082 B CN 106380082B CN 201610709531 A CN201610709531 A CN 201610709531A CN 106380082 B CN106380082 B CN 106380082B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
Abstract
This application involves a kind of anti-fog coating based on core-shell structure, the anti-fog coating is CaCO3/SiO2Compound particle, the CaCO3/SiO2Compound particle is core-shell structure, CaCO3Particle is core, SiO2Nanoparticle is adsorbed on the CaCO3Particle surface forms shell structure.
Description
Technical field
This application involves anti-fog coating field more particularly to a kind of anti-fog coatings based on core-shell structure.
Background technique
Transparent material has a wide range of applications in industrial and agricultural production and life, still, special due to the influence of ambient enviroment
It is not the influence of humidity in environment, transparent material surface easily generates atomization, transparency is caused to decline, to the production and life of people
Work brings inconvenience, or even causes heavy losses.
Anti-fogging measure is mainly started with from the condition for destroying fogging, first is that installation heating device makes substrate from thermodynamics
Surface temperature is higher than vapor dew point, or the small dewdrop that installation ultrasonic wave dispersion generates vapor volatilizees in a very short period of time
For vapor, the measure being usually taken is the method heated with hair dryer or film metal silk, removes transparent material surface
Water mist；Second is that changing the chemical component or microstructure of substrate surface, such as in not shadow from the performance for changing material surface
In the case where ringing material function itself, one layer of hydrophilic or hydrophobic wear-resistant coating is constructed on the surface of the material, when small water drop contact
When to the coating, due to the hydrophilic or hydrophobic effect of coating, small water droplet can coating surface sprawl into a thin layer of moisture film or
Person tumbles, to inhibit the formation of coating surface water mist.
However, in the prior art, using hair dryer or wire heating, there are device complexity, and original part is more, cost
Height, it is easy to damage the problems such as, therefore coating be solve transparent material surface fogging main method.
Summary of the invention
The present invention is intended to provide a kind of anti-fog coating based on core-shell structure, set forth above to solve the problems, such as.
A kind of anti-fog coating based on core-shell structure is provided in the embodiment of the present invention, the anti-fog coating is CaCO3/
SiO2Compound particle coating, the CaCO3/SiO2Compound particle is core-shell structure, CaCO3Particle is core, SiO2Nanoparticle is inhaled
It is attached to the CaCO3Particle surface forms shell structure, the CaCO3Particle diameter is 3~10 μm, the SiO2Nanoparticle seed
Diameter is 30~100nm.
The technical solution that the embodiment of the present invention provides can include the following benefits:
Anti-fog coating of the invention is based on CaCO3/SiO2Compound particle, due to CaCO3It generates and divides after calcining at high temperature
Solution, there is CO2Gas generates, CO2Gas breaks through SiO2The shell structure that nanoparticle is formed, so that the shell structure surface forms aperture,
It is formed by SiO2The porous coating for the hollow sphere composition that nanoparticle is constituted, and increase the surface area of shell wall, be conducive to more
Hollow sphere wall on adsorbed water molecule, on the other hand, the duct on hollow sphere wall due to capillary effect, also can for hydrone into
Channel is provided in goal, is conducive to sprawling for water droplet, increases the hydrophily of figure layer；Third, hollow sphere also will increase light transmittance, keep away
Exempted to lead to the decline of light transmittance because of the effect of coating, anti-fog coating of the invention to the contact angle of water droplet less than 1 degree, have compared with
Good hydrophilic effect, can prevent glass surface from water mist etc. occur, to solve the problems, such as set forth above.
The additional aspect of the application and advantage will be set forth in part in the description, and will partially become from the following description
It obtains obviously, or recognized by the practice of the application.It should be understood that above general description and following detailed description are only
Be it is exemplary and explanatory, the application can not be limited.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings, but the embodiment in attached drawing is not constituted to any limit of the invention
System, for those of ordinary skill in the art, without creative efforts, can also obtain according to the following drawings
Other attached drawings.
Fig. 1 is the production flow diagram of anti-fog coating of the present invention.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
Transparent material has a wide range of applications in industrial and agricultural production and life, still, special due to the influence of ambient enviroment
It is not the influence of humidity in environment, transparent material surface easily generates atomization, transparency is caused to decline, to the production and life of people
Work brings inconvenience, or even causes heavy losses.
Anti-fogging measure is mainly started with from the condition for destroying fogging, first is that installation heating device makes substrate from thermodynamics
Surface temperature is higher than vapor dew point, or the small dewdrop that installation ultrasonic wave dispersion generates vapor volatilizees in a very short period of time
For vapor, the measure being usually taken is the method heated with hair dryer or film metal silk, removes transparent material surface
Water mist；Second is that changing the chemical component or microstructure of substrate surface, such as in not shadow from the performance for changing material surface
In the case where ringing material function itself, one layer of hydrophilic or hydrophobic wear-resistant coating is constructed on the surface of the material, when small water drop contact
When to the coating, due to the hydrophilic or hydrophobic effect of coating, small water droplet can coating surface sprawl into a thin layer of moisture film or
Person tumbles, to inhibit the formation of coating surface water mist.
However, in the prior art, using hair dryer or wire heating, there are device complexity, and original part is more, cost
Height, it is easy to damage the problems such as, therefore coating be solve transparent material surface fogging main method.
Application scenarios one:
A kind of anti-fog coating based on core-shell structure that embodiments herein is related to, the anti-fog coating are CaCO3/
SiO2Compound particle coating, the CaCO3/SiO2Compound particle is core-shell structure, CaCO3Particle is core, SiO2Nanoparticle is inhaled
It is attached to the CaCO3Particle surface forms shell structure, the CaCO3Particle diameter is 3~10 μm, the SiO2Nanoparticle seed
Diameter is 30~100nm.
Preferably, the anti-fog coating is coated in antifog glass surface, the antifog glass is high temp glass substrate, institute
Stating high temp glass substrate surface is the anti-fog coating deposited by electrostatic self-assembled method, and the high temp glass substrate is by poly- electricity
Solve matter surface modification treatment；The high temp glass substrate surface has positive charge by polyelectrolyte processing rear surface, can pass through
Anti-fog coating is deposited on surface by electrostatic attraction.
Due to CaCO3Decomposition is generated after calcining at high temperature, there is CO2Gas generates, CO2Gas breaks through SiO2Nanoparticle
The shell structure of formation is formed so that the shell structure surface forms aperture by SiO2The hollow sphere that nanoparticle is constituted forms more
Hole coating, and increase the surface area of shell wall, be conducive to adsorbed water molecule on more hollow sphere walls, on the other hand, hollow sphere
Duct on wall can also be entered for hydrone due to capillary effect and provide channel in ball, be conducive to sprawling for water droplet, be increased figure
The hydrophily of layer；Third, hollow sphere also will increase light transmittance, avoid because the effect of coating leads to the decline of light transmittance.
Preferably, the CaCO3Particle surface coats layer of polyethylene pyrrolidones.
The polyvinylpyrrolidone is water-soluble high-molecular compound, can be in CaCO3Particle is protected as one layer of colloid
Substance avoids CaCO when without high-temperature calcination3Particle decomposes in advance.
Preferably, the high temp glass substrate of the anti-fog coating and the contact angle of water droplet are deposited with less than 1 degree, is had higher
Hydrophily and self-cleaning property.
Still more preferably, by Fig. 1, the making step of the anti-fog coating is as follows:
Step 1 prepares CaCO3Particle:
Choose CaCO3Particle is cleaned by ultrasonic, and 3g polyvinylpyrrolidone is then taken to be added to 100ml deionized water
In, by the CaCO after cleaning3Particle is added in deionized water, and ultrasound 30min, makes CaCO again3Particle surface coats a strata second
Alkene pyrrolidone；
Step 2 prepares SiO2Nanoparticle:
By 5ml ammonium hydroxide, 100ml dehydrated alcohol is added to stirring at normal temperature 10min in conical flask, in 60 DEG C of stirring 2min,
Stirring is lower to be added dropwise 3ml ethyl orthosilicate, continues to stir 12h at 60 DEG C, obtains translucent containing partial size being the solid of 50nm
SiO2The suspension of nanoparticle；
Step 3 prepares CaCO3/SiO2Composite nanoparticle:
A) by the CaCO of step steady3Particle ultrasonic disperse forms suspension in water, by isometric concentration be 1~
The PDDA of 3mg/ml is added in the suspension, magnetic agitation, and PDDA is made to be assembled in CaCO by Coulomb force absorption3Particle table
Face, centrifuge separation, supersound washing removes the PDDA of physical absorption, then obtained CaCO3Particle is dispersed in water to obtain
The suspension of even dispersion；
B) suspension obtained above is added in PSS aqueous solution, magnetic agitation 3h, is centrifugated, supersound washing obtains
To CaCO3Adsorption has the spheroidal particle of polyvinylpyrrolidone, PDDA and PSS, repeats the above steps, so that CaCO3Particle
Adsorption is uniform；
C) by CaCO obtained above3Particle is added to prepared SiO2In the suspension of nanoparticle, magnetic agitation 6
~10h, centrifuge separation, supersound washing remove unadsorbed SiO2Nanoparticle repeats the above steps, so that SiO2Nanoparticle
In CaCO3Particle surface absorption uniformly, then adsorbs PDDA/SiO twice again2Nanoparticle obtains CaCO3/SiO2Compound grain
Son, and SiO2Nanoparticle is three layers；
Step 4 prepares anti-fog coating:
A) Substrate treatment uses volume ratio for the 98%H of 7:32SO4And 30%H2O2To high temp glass substrate immersion treatment,
Processed high temp glass substrate is washed with distilled water, then with being dried with nitrogen；
B) the high temp glass substrate after cleaning is alternately immersed in PDDA and PSS solution, centre is washed with distilled water object
The PDDA and PSS for managing absorption, until obtaining 7 layers of PDDA and 6 layer of PSS covering in high temp glass substrate surface；
C) high temp glass substrate obtained above is immersed in the CaCO that step 3 obtains3/SiO2Compound particle suspension
In, 5h is stood, deposits one layer of CaCO in high temp glass substrate surface3/SiO2Compound particle coating, then by the high temp glass base
Piece is put into Muffle furnace, is sintered 10h at 600~850 DEG C, so that CaCO3/SiO2CaCO in compound particle3Pyrolytic obtains
To the SiO for being deposited with coarse structure and pore structure2The high temp glass substrate of hollow sphere coating.
Application scenarios two:
A kind of anti-fog coating based on core-shell structure that embodiments herein is related to, the anti-fog coating are CaCO3/
SiO2Compound particle coating, the CaCO3/SiO2Compound particle is core-shell structure, CaCO3Particle is core, SiO2Nanoparticle is inhaled
It is attached to the CaCO3Particle surface forms shell structure, the CaCO3Particle diameter is 3 μm, the SiO2Nano particle diameter is
30nm。
Preferably, the anti-fog coating is coated in antifog glass surface, the antifog glass is high temp glass substrate, institute
Stating high temp glass substrate surface is the anti-fog coating deposited by electrostatic self-assembled method, and the high temp glass substrate is by poly- electricity
Solve matter surface modification treatment；The high temp glass substrate surface has positive charge by polyelectrolyte processing rear surface, can pass through
Anti-fog coating is deposited on surface by electrostatic attraction.
Due to CaCO3Decomposition is generated after calcining at high temperature, there is CO2Gas generates, CO2Gas breaks through SiO2Nanoparticle
The shell structure of formation is formed so that the shell structure surface forms aperture by SiO2The hollow sphere that nanoparticle is constituted forms more
Hole coating, and increase the surface area of shell wall, be conducive to adsorbed water molecule on more hollow sphere walls, on the other hand, hollow sphere
Duct on wall can also be entered for hydrone due to capillary effect and provide channel in ball, be conducive to sprawling for water droplet, be increased figure
The hydrophily of layer；Third, hollow sphere also will increase light transmittance, avoid because the effect of coating leads to the decline of light transmittance.
Preferably, the CaCO3Particle surface coats layer of polyethylene pyrrolidones.
The polyvinylpyrrolidone is water-soluble high-molecular compound, can be in CaCO3Particle is protected as one layer of colloid
Substance avoids CaCO when without high-temperature calcination3Particle decomposes in advance.
Preferably, the high temp glass substrate of the anti-fog coating and the contact angle of water droplet are deposited with less than 1 degree, is had higher
Hydrophily and self-cleaning property.
Still more preferably, by Fig. 1, the making step of the anti-fog coating is as follows:
Step 1 prepares CaCO3Particle:
Choose CaCO3Particle is cleaned by ultrasonic, and 3g polyvinylpyrrolidone is then taken to be added to 100ml deionized water
In, by the CaCO after cleaning3Particle is added in deionized water, and ultrasound 30min, makes CaCO again3Particle surface coats a strata second
Alkene pyrrolidone；
Step 2 prepares SiO2Nanoparticle:
By 5ml ammonium hydroxide, 100ml dehydrated alcohol is added to stirring at normal temperature 10min in conical flask, in 60 DEG C of stirring 2min,
Stirring is lower to be added dropwise 3ml ethyl orthosilicate, continues to stir 12h at 60 DEG C, obtains translucent containing partial size being the solid of 50nm
SiO2The suspension of nanoparticle；
Step 3 prepares CaCO3/SiO2Composite nanoparticle:
A) by the CaCO of step steady3Particle ultrasonic disperse forms suspension in water, by isometric concentration be 1~
The PDDA of 3mg/ml is added in the suspension, magnetic agitation, and PDDA is made to be assembled in CaCO by Coulomb force absorption3Particle table
Face, centrifuge separation, supersound washing removes the PDDA of physical absorption, then obtained CaCO3Particle is dispersed in water to obtain
The suspension of even dispersion；
B) suspension obtained above is added in PSS aqueous solution, magnetic agitation 3h, is centrifugated, supersound washing obtains
To CaCO3Adsorption has the spheroidal particle of polyvinylpyrrolidone, PDDA and PSS, repeats the above steps, so that CaCO3Particle
Adsorption is uniform；
C) by CaCO obtained above3Particle is added to prepared SiO2In the suspension of nanoparticle, magnetic agitation 6
~10h, centrifuge separation, supersound washing remove unadsorbed SiO2Nanoparticle repeats the above steps, so that SiO2Nanoparticle
In CaCO3Particle surface absorption uniformly, then adsorbs PDDA/SiO twice again2Nanoparticle obtains CaCO3/SiO2Compound grain
Son, and SiO2Nanoparticle is three layers；
Step 4 prepares anti-fog coating:
A) Substrate treatment uses volume ratio for the 98%H of 7:32SO4And 30%H2O2To high temp glass substrate immersion treatment,
Processed high temp glass substrate is washed with distilled water, then with being dried with nitrogen；
B) the high temp glass substrate after cleaning is alternately immersed in PDDA and PSS solution, centre is washed with distilled water object
The PDDA and PSS for managing absorption, until obtaining 7 layers of PDDA and 6 layer of PSS covering in high temp glass substrate surface；
C) high temp glass substrate obtained above is immersed in the CaCO that step 3 obtains3/SiO2Compound particle suspension
In, 5h is stood, deposits one layer of CaCO in high temp glass substrate surface3/SiO2Compound particle coating, then by the high temp glass base
Piece is put into Muffle furnace, is sintered 10h at 600~850 DEG C, so that CaCO3/SiO2CaCO in compound particle3Pyrolytic obtains
To the SiO for being deposited with coarse structure and pore structure2The high temp glass substrate of hollow sphere coating.
Application scenarios three:
A kind of anti-fog coating based on core-shell structure that embodiments herein is related to, the anti-fog coating are CaCO3/
SiO2Compound particle coating, the CaCO3/SiO2Compound particle is core-shell structure, CaCO3Particle is core, SiO2Nanoparticle is inhaled
It is attached to the CaCO3Particle surface forms shell structure, the CaCO3Particle diameter is 5 μm, the SiO2Nano particle diameter is
50nm。
Preferably, the anti-fog coating is coated in antifog glass surface, the antifog glass is high temp glass substrate, institute
Stating high temp glass substrate surface is the anti-fog coating deposited by electrostatic self-assembled method, and the high temp glass substrate is by poly- electricity
Solve matter surface modification treatment；The high temp glass substrate surface has positive charge by polyelectrolyte processing rear surface, can pass through
Anti-fog coating is deposited on surface by electrostatic attraction.
Due to CaCO3Decomposition is generated after calcining at high temperature, there is CO2Gas generates, CO2Gas breaks through SiO2Nanoparticle
The shell structure of formation is formed so that the shell structure surface forms aperture by SiO2The hollow sphere that nanoparticle is constituted forms more
Hole coating, and increase the surface area of shell wall, be conducive to adsorbed water molecule on more hollow sphere walls, on the other hand, hollow sphere
Duct on wall can also be entered for hydrone due to capillary effect and provide channel in ball, be conducive to sprawling for water droplet, be increased figure
The hydrophily of layer；Third, hollow sphere also will increase light transmittance, avoid because the effect of coating leads to the decline of light transmittance.
Preferably, the CaCO3Particle surface coats layer of polyethylene pyrrolidones.
The polyvinylpyrrolidone is water-soluble high-molecular compound, can be in CaCO3Particle is protected as one layer of colloid
Substance avoids CaCO when without high-temperature calcination3Particle decomposes in advance.
Preferably, the high temp glass substrate of the anti-fog coating and the contact angle of water droplet are deposited with less than 2 degree, is had higher
Hydrophily and self-cleaning property.
Still more preferably, by Fig. 1, the making step of the anti-fog coating is as follows:
Step 1 prepares CaCO3Particle:
Choose CaCO3Particle is cleaned by ultrasonic, and 3g polyvinylpyrrolidone is then taken to be added to 100ml deionized water
In, by the CaCO after cleaning3Particle is added in deionized water, and ultrasound 30min, makes CaCO again3Particle surface coats a strata second
Alkene pyrrolidone；
Step 2 prepares SiO2Nanoparticle:
By 5ml ammonium hydroxide, 100ml dehydrated alcohol is added to stirring at normal temperature 10min in conical flask, in 60 DEG C of stirring 2min,
Stirring is lower to be added dropwise 3ml ethyl orthosilicate, continues to stir 12h at 60 DEG C, obtains translucent containing partial size being the solid of 50nm
SiO2The suspension of nanoparticle；
Step 3 prepares CaCO3/SiO2Composite nanoparticle:
A) by the CaCO of step steady3Particle ultrasonic disperse forms suspension in water, by isometric concentration be 1~
The PDDA of 3mg/ml is added in the suspension, magnetic agitation, and PDDA is made to be assembled in CaCO by Coulomb force absorption3Particle table
Face, centrifuge separation, supersound washing removes the PDDA of physical absorption, then obtained CaCO3Particle is dispersed in water to obtain
The suspension of even dispersion；
B) suspension obtained above is added in PSS aqueous solution, magnetic agitation 3h, is centrifugated, supersound washing obtains
To CaCO3Adsorption has the spheroidal particle of polyvinylpyrrolidone, PDDA and PSS, repeats the above steps, so that CaCO3Particle
Adsorption is uniform；
C) by CaCO obtained above3Particle is added to prepared SiO2In the suspension of nanoparticle, magnetic agitation 6
~10h, centrifuge separation, supersound washing remove unadsorbed SiO2Nanoparticle repeats the above steps, so that SiO2Nanoparticle
In CaCO3Particle surface absorption uniformly, then adsorbs PDDA/SiO twice again2Nanoparticle obtains CaCO3/SiO2Compound grain
Son, and SiO2Nanoparticle is three layers；
Step 4 prepares anti-fog coating:
A) Substrate treatment uses volume ratio for the 98%H of 7:32SO4And 30%H2O2To high temp glass substrate immersion treatment,
Processed high temp glass substrate is washed with distilled water, then with being dried with nitrogen；
B) the high temp glass substrate after cleaning is alternately immersed in PDDA and PSS solution, centre is washed with distilled water object
The PDDA and PSS for managing absorption, until obtaining 7 layers of PDDA and 6 layer of PSS covering in high temp glass substrate surface；
C) high temp glass substrate obtained above is immersed in the CaCO that step 3 obtains3/SiO2Compound particle suspension
In, 5h is stood, deposits one layer of CaCO in high temp glass substrate surface3/SiO2Compound particle coating, then by the high temp glass base
Piece is put into Muffle furnace, is sintered 10h at 600~850 DEG C, so that CaCO3/SiO2CaCO in compound particle3Pyrolytic obtains
To the SiO for being deposited with coarse structure and pore structure2The high temp glass substrate of hollow sphere coating.
Application scenarios four:
A kind of anti-fog coating based on core-shell structure that embodiments herein is related to, the anti-fog coating are CaCO3/
SiO2Compound particle coating, the CaCO3/SiO2Compound particle is core-shell structure, CaCO3Particle is core, SiO2Nanoparticle is inhaled
It is attached to the CaCO3Particle surface forms shell structure, the CaCO3Particle diameter is 7 μm, the SiO2Nano particle diameter is
70nm。
Preferably, the anti-fog coating is coated in antifog glass surface, the antifog glass is high temp glass substrate, institute
Stating high temp glass substrate surface is the anti-fog coating deposited by electrostatic self-assembled method, and the high temp glass substrate is by poly- electricity
Solve matter surface modification treatment；The high temp glass substrate surface has positive charge by polyelectrolyte processing rear surface, can pass through
Anti-fog coating is deposited on surface by electrostatic attraction.
Due to CaCO3Decomposition is generated after calcining at high temperature, there is CO2Gas generates, CO2Gas breaks through SiO2Nanoparticle
The shell structure of formation is formed so that the shell structure surface forms aperture by SiO2The hollow sphere that nanoparticle is constituted forms more
Hole coating, and increase the surface area of shell wall, be conducive to adsorbed water molecule on more hollow sphere walls, on the other hand, hollow sphere
Duct on wall can also be entered for hydrone due to capillary effect and provide channel in ball, be conducive to sprawling for water droplet, be increased figure
The hydrophily of layer；Third, hollow sphere also will increase light transmittance, avoid because the effect of coating leads to the decline of light transmittance.
Preferably, the CaCO3Particle surface coats layer of polyethylene pyrrolidones.
The polyvinylpyrrolidone is water-soluble high-molecular compound, can be in CaCO3Particle is protected as one layer of colloid
Substance avoids CaCO when without high-temperature calcination3Particle decomposes in advance.
Preferably, the high temp glass substrate of the anti-fog coating and the contact angle of water droplet are deposited with less than 2 degree, is had higher
Hydrophily and self-cleaning property.
Still more preferably, by Fig. 1, the making step of the anti-fog coating is as follows:
Step 1 prepares CaCO3Particle:
Choose CaCO3Particle is cleaned by ultrasonic, and 3g polyvinylpyrrolidone is then taken to be added to 100ml deionized water
In, by the CaCO after cleaning3Particle is added in deionized water, and ultrasound 30min, makes CaCO again3Particle surface coats a strata second
Alkene pyrrolidone；
Step 2 prepares SiO2Nanoparticle:
By 5ml ammonium hydroxide, 100ml dehydrated alcohol is added to stirring at normal temperature 10min in conical flask, in 60 DEG C of stirring 2min,
Stirring is lower to be added dropwise 3ml ethyl orthosilicate, continues to stir 12h at 60 DEG C, obtains translucent containing partial size being the solid of 50nm
SiO2The suspension of nanoparticle；
Step 3 prepares CaCO3/SiO2Composite nanoparticle:
A) by the CaCO of step steady3Particle ultrasonic disperse forms suspension in water, by isometric concentration be 1~
The PDDA of 3mg/ml is added in the suspension, magnetic agitation, and PDDA is made to be assembled in CaCO by Coulomb force absorption3Particle table
Face, centrifuge separation, supersound washing removes the PDDA of physical absorption, then obtained CaCO3Particle is dispersed in water to obtain
The suspension of even dispersion；
B) suspension obtained above is added in PSS aqueous solution, magnetic agitation 3h, is centrifugated, supersound washing obtains
To CaCO3Adsorption has the spheroidal particle of polyvinylpyrrolidone, PDDA and PSS, repeats the above steps, so that CaCO3Particle
Adsorption is uniform；
C) by CaCO obtained above3Particle is added to prepared SiO2In the suspension of nanoparticle, magnetic agitation 6
~10h, centrifuge separation, supersound washing remove unadsorbed SiO2Nanoparticle repeats the above steps, so that SiO2Nanoparticle
In CaCO3Particle surface absorption uniformly, then adsorbs PDDA/SiO twice again2Nanoparticle obtains CaCO3/SiO2Compound grain
Son, and SiO2Nanoparticle is three layers；
Step 4 prepares anti-fog coating:
A) Substrate treatment uses volume ratio for the 98%H of 7:32SO4And 30%H2O2To high temp glass substrate immersion treatment,
Processed high temp glass substrate is washed with distilled water, then with being dried with nitrogen；
B) the high temp glass substrate after cleaning is alternately immersed in PDDA and PSS solution, centre is washed with distilled water object
The PDDA and PSS for managing absorption, until obtaining 7 layers of PDDA and 6 layer of PSS covering in high temp glass substrate surface；
C) high temp glass substrate obtained above is immersed in the CaCO that step 3 obtains3/SiO2Compound particle suspension
In, 5h is stood, deposits one layer of CaCO in high temp glass substrate surface3/SiO2Compound particle coating, then by the high temp glass base
Piece is put into Muffle furnace, is sintered 10h at 600~850 DEG C, so that CaCO3/SiO2CaCO in compound particle3Pyrolytic obtains
To the SiO for being deposited with coarse structure and pore structure2The high temp glass substrate of hollow sphere coating.
Application scenarios five:
A kind of anti-fog coating based on core-shell structure that embodiments herein is related to, the anti-fog coating are CaCO3/
SiO2Compound particle coating, the CaCO3/SiO2Compound particle is core-shell structure, CaCO3Particle is core, SiO2Nanoparticle is inhaled
It is attached to the CaCO3Particle surface forms shell structure, the CaCO3Particle diameter is 10 μm, the SiO2Nano particle diameter is
100nm。
Preferably, the anti-fog coating is coated in antifog glass surface, the antifog glass is high temp glass substrate, institute
Stating high temp glass substrate surface is the anti-fog coating deposited by electrostatic self-assembled method, and the high temp glass substrate is by poly- electricity
Solve matter surface modification treatment；The high temp glass substrate surface has positive charge by polyelectrolyte processing rear surface, can pass through
Anti-fog coating is deposited on surface by electrostatic attraction.
Due to CaCO3Decomposition is generated after calcining at high temperature, there is CO2Gas generates, CO2Gas breaks through SiO2Nanoparticle
The shell structure of formation is formed so that the shell structure surface forms aperture by SiO2The hollow sphere that nanoparticle is constituted forms more
Hole coating, and increase the surface area of shell wall, be conducive to adsorbed water molecule on more hollow sphere walls, on the other hand, hollow sphere
Duct on wall can also be entered for hydrone due to capillary effect and provide channel in ball, be conducive to sprawling for water droplet, be increased figure
The hydrophily of layer；Third, hollow sphere also will increase light transmittance, avoid because the effect of coating leads to the decline of light transmittance.
Preferably, the CaCO3Particle surface coats layer of polyethylene pyrrolidones.
The polyvinylpyrrolidone is water-soluble high-molecular compound, can be in CaCO3Particle is protected as one layer of colloid
Substance avoids CaCO when without high-temperature calcination3Particle decomposes in advance.
Preferably, the high temp glass substrate of the anti-fog coating and the contact angle of water droplet are deposited with less than 2 degree, is had higher
Hydrophily and self-cleaning property.
Still more preferably, by Fig. 1, the making step of the anti-fog coating is as follows:
Step 1 prepares CaCO3Particle:
Choose CaCO3Particle is cleaned by ultrasonic, and 3g polyvinylpyrrolidone is then taken to be added to 100ml deionized water
In, by the CaCO after cleaning3Particle is added in deionized water, and ultrasound 30min, makes CaCO again3Particle surface coats a strata second
Alkene pyrrolidone；
Step 2 prepares SiO2Nanoparticle:
By 5ml ammonium hydroxide, 100ml dehydrated alcohol is added to stirring at normal temperature 10min in conical flask, in 60 DEG C of stirring 2min,
Stirring is lower to be added dropwise 3ml ethyl orthosilicate, continues to stir 12h at 60 DEG C, obtains translucent containing partial size being the solid of 50nm
SiO2The suspension of nanoparticle；
Step 3 prepares CaCO3/SiO2Composite nanoparticle:
A) by the CaCO of step steady3Particle ultrasonic disperse forms suspension in water, by isometric concentration be 1~
The PDDA of 3mg/ml is added in the suspension, magnetic agitation, and PDDA is made to be assembled in CaCO by Coulomb force absorption3Particle table
Face, centrifuge separation, supersound washing removes the PDDA of physical absorption, then obtained CaCO3Particle is dispersed in water to obtain
The suspension of even dispersion；
B) suspension obtained above is added in PSS aqueous solution, magnetic agitation 3h, is centrifugated, supersound washing obtains
To CaCO3Adsorption has the spheroidal particle of polyvinylpyrrolidone, PDDA and PSS, repeats the above steps, so that CaCO3Particle
Adsorption is uniform；
C) by CaCO obtained above3Particle is added to prepared SiO2In the suspension of nanoparticle, magnetic agitation 6
~10h, centrifuge separation, supersound washing remove unadsorbed SiO2Nanoparticle repeats the above steps, so that SiO2Nanoparticle
In CaCO3Particle surface absorption uniformly, then adsorbs PDDA/SiO twice again2Nanoparticle obtains CaCO3/SiO2Compound grain
Son, and SiO2Nanoparticle is three layers；
Step 4 prepares anti-fog coating:
A) Substrate treatment uses volume ratio for the 98%H of 7:32SO4And 30%H2O2To high temp glass substrate immersion treatment,
Processed high temp glass substrate is washed with distilled water, then with being dried with nitrogen；
B) the high temp glass substrate after cleaning is alternately immersed in PDDA and PSS solution, centre is washed with distilled water object
The PDDA and PSS for managing absorption, until obtaining 7 layers of PDDA and 6 layer of PSS covering in high temp glass substrate surface；
C) high temp glass substrate obtained above is immersed in the CaCO that step 3 obtains3/SiO2Compound particle suspension
In, 5h is stood, deposits one layer of CaCO in high temp glass substrate surface3/SiO2Compound particle coating, then by the high temp glass base
Piece is put into Muffle furnace, is sintered 10h at 600~850 DEG C, so that CaCO3/SiO2CaCO in compound particle3Pyrolytic obtains
To the SiO for being deposited with coarse structure and pore structure2The high temp glass substrate of hollow sphere coating.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the application
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (2)
1. a kind of anti-fog coating based on core-shell structure, which is characterized in that the anti-fog coating is CaCO3/SiO2Compound particle applies
Layer, the CaCO3/SiO2Compound particle is core-shell structure, CaCO3Particle is core, SiO2Nanoparticle is adsorbed on the CaCO3Grain
Sublist face forms shell structure；The production of the anti-fog coating the following steps are included:
Step 1 prepares CaCO3Particle:
Choose CaCO3Particle is cleaned by ultrasonic, and 3g polyvinylpyrrolidone is then taken to be added in 100ml deionized water, will
CaCO after cleaning3Particle is added in deionized water, and ultrasound 30min, makes CaCO again3Particle surface coats layer of polyethylene pyrrole
Pyrrolidone；
Step 2 prepares SiO2Nanoparticle:
By 5ml ammonium hydroxide, 100ml dehydrated alcohol is added to stirring at normal temperature 10min in conical flask, in 60 DEG C of stirring 2min, is stirring
Lower dropwise addition 3ml ethyl orthosilicate continues to stir 12h at 60 DEG C, obtains the translucent solid SiO for being 50nm containing partial size2It receives
The suspension of rice corpuscles；
Step 3 prepares CaCO3/SiO2Composite nanoparticle:
A) by the CaCO of step steady3Particle ultrasonic disperse forms suspension in water, is 1~3mg/ by isometric concentration
The PDDA of ml is added in the suspension, magnetic agitation, and PDDA is made to be assembled in CaCO by Coulomb force absorption3Particle surface, from
Heart separation, supersound washing removes the PDDA of physical absorption, then obtained CaCO3Particle, which is dispersed in water, uniformly to be divided
Scattered suspension；
B) suspension obtained above is added in PSS aqueous solution, magnetic agitation 3h, is centrifugated, supersound washing obtains
CaCO3Adsorption has the spheroidal particle of polyvinylpyrrolidone, PDDA and PSS, repeats the above steps, so that CaCO3Particle table
Face absorption is uniform；
C) by CaCO obtained above3Particle is added to prepared SiO2In the suspension of nanoparticle, magnetic agitation 6~
10h, centrifuge separation, supersound washing remove unadsorbed SiO2Nanoparticle repeats the above steps, so that SiO2Nanoparticle exists
CaCO3Particle surface absorption uniformly, then adsorbs PDDA/SiO twice again2Nanoparticle obtains CaCO3/SiO2Compound particle,
And SiO2Nanoparticle is three layers；
Step 4 prepares anti-fog coating:
A) Substrate treatment uses volume ratio for the 98%H of 7:32SO4And 30%H2O2To high temp glass substrate immersion treatment, will locate
The high temp glass substrate managed is washed with distilled water, then with being dried with nitrogen；
B) the high temp glass substrate after cleaning is alternately immersed in PDDA and PSS solution, centre is washed with distilled water physics suction
Attached PDDA and PSS, until obtaining 7 layers of PDDA and 6 layer of PSS covering in high temp glass substrate surface；
C) high temp glass substrate obtained above is immersed in the CaCO that step 3 obtains3/SiO2It is quiet in compound particle suspension
5h is set, deposits one layer of CaCO in high temp glass substrate surface3/SiO2Then the high temp glass substrate is put by compound particle coating
In Muffle furnace, it is sintered 10h at 600~850 DEG C, so that CaCO3/SiO2CaCO in compound particle3Pyrolytic is deposited
There is the SiO of coarse structure and pore structure2The high temp glass substrate of hollow sphere coating.
2. anti-fog coating according to claim 1, which is characterized in that the CaCO3Particle diameter is 3~10 μm, described
SiO2Nano particle diameter is 30~100nm.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405236A (en) * | 2002-11-06 | 2003-03-26 | 中山大学 | Nano CaCo3/TiO2 composite particle and its preparation method |
| WO2003097529A1 (en) * | 2002-03-20 | 2003-11-27 | Nanomaterials Technology Pte Ltd. | CaCO3/Si2O • nH2O NANOCOMPOSITE PARTICLES, Si2O • nH2O NANOMATERIAL AND METHOD OF PRODUCING THE SAME |
| CN101538124A (en) * | 2008-03-17 | 2009-09-23 | 中国科学院理化技术研究所 | Super-hydrophilic self-cleaning SiO2 antifogging coating and preparation method thereof |
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2016
- 2016-08-22 CN CN201610709531.7A patent/CN106380082B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003097529A1 (en) * | 2002-03-20 | 2003-11-27 | Nanomaterials Technology Pte Ltd. | CaCO3/Si2O • nH2O NANOCOMPOSITE PARTICLES, Si2O • nH2O NANOMATERIAL AND METHOD OF PRODUCING THE SAME |
| CN1405236A (en) * | 2002-11-06 | 2003-03-26 | 中山大学 | Nano CaCo3/TiO2 composite particle and its preparation method |
| CN101538124A (en) * | 2008-03-17 | 2009-09-23 | 中国科学院理化技术研究所 | Super-hydrophilic self-cleaning SiO2 antifogging coating and preparation method thereof |
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