CN106366826A - Nano-TiO2 self-cleaning coating and preparation method thereof - Google Patents
Nano-TiO2 self-cleaning coating and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of the chemical engineering coating, and particularly relates to a nano-TiO2 self-cleaning coating and a preparation method thereof. The preparation method comprises the following steps: dispersing 1.5-3 parts of boron-nitrogen doping modified nano-TiO2 in mixed liquid of 15-25 parts of an acrylics monomer and 0.5-2 parts of a co-emulsifier, stirring, dispersing by the ultrasonic, adding 2-6 parts of an emulgator and 50-90 parts of deionized water, stirring, dispersing by the ultrasonic, adding 0.3-0.6 parts of an initiator, keeping the temperature for 3-5 h, and obtaining the modified nano-TiO2 self-cleaning coating. The preparation of the boron-nitrogen doping modified nano-TiO2 successively comprises the preparation of the boron-nitrogen doping nano-TiO2, and the surface modified process of the boron-nitrogen doping nano-TiO2. The self-cleaning coating has the characteristics of good dispersity of the TiO2 and strong self-cleaning capacity.
Description
Technical field
The invention belongs to technical field of chemical paint is and in particular to a kind of nano titanium oxide self-cleaning coating and its preparation
Method.
Background technology
With the fast development of China's building industry, construction wall is because having Radix Saposhnikoviae, rain-proof, insulation, heat-insulated, its anti-noise, anti-sky
The advantages of impervious and dicoration, is favored by architects.But its cleaning way does not but have any change.Manual cleaning
Both inconvenience and dangerous, in addition, life-time service abluent not only waste of resource, also will bring pollution to environment, not meet mesh
Environmental protection that front country advocates, save policy, therefore automatically cleaning construction wall is prepared in research becomes focus.
Research shows titanium dioxide under the irradiation of light, has super hydrophilic, photocatalysiss, decomposing organic matter, release negative
The functions such as oxonium ion, that is, self-cleaning function.Titanium dioxide self-cleaning function is applied on building wall to solve it clear
Clean problem, is rinsed by rain drop erosion and regular flowing water and just can reach the effect that body of wall is cleaned naturally.This automatically cleaning glass
The life expectancy of glass up to 10 years as long as, expert foretell, this body of wall without manual cleaning will cause one clear on a large scale
Clean revolution.
But nano titanium oxide specific surface area is big, surface energy is high and surface hydrophilic oleophobic, easily rolls into a ball in the polymer
Poly-, aggregate can substantially reduce the performance of titanium dioxide, reduces the photocatalytic activity of titanium deoxid film, and then affects from clearly
Clean ability.Publication No. cn105111401a discloses a kind of nano titanium oxide self-cleaning coating, but receives in this coating
Rice titanium dioxide dispersion is not uniform, easily reunites, the automatically cleaning effect of impact product.
Content of the invention
An object of the present invention is to provide the self-cleaning coating that a kind of titanium dioxide is scattered, automatical cleaning ability is strong.
The second object of the present invention is the system providing the self-cleaning coating that a kind of titanium dioxide is scattered, automatical cleaning ability is strong
Preparation Method.
One of above-mentioned technical purpose of the present invention is achieved through the following technical solutions:
A kind of nano titanium oxide self-cleaning coating it is characterised in that: according to the mass fraction, its composition includes following components:
The nitrogen-doped modified nano titanium oxide of boron 1.5～3
Acrylic ester monomer 15～25
Emulsifying agent 2～6
Co-emulsifier 0.5～2
Initiator 0.3～0.6
Deionized water 50～90
The nitrogen-doped modified nano titanium oxide preparation of described boron includes the preparation of boron nitrogen-doped nanometer titanium dioxide successively, boron nitrogen is mixed
Miscellaneous Surface Modification of Nanosized Titanium Dioxide step.
In nano titanium oxide doped boron-nitrogen element, can forbidden band in introduce doped energy-band, so that forbidden band is narrowed, can inhale
Receive longer wavelengths of light, light absorbs band edge red shift, widened photoresponse scope, improve quantum efficiency, thus being favorably improved
Photocatalysis efficiency.Codope on the basis of single doping, light absorbs red shift degree increases further it is seen that photoresponse strengthens,
And degrading organic pollutant matter under sunlight.The nitrogen co-doped rear titanium dioxide purity of another aspect boron is high, granule
Size is uniform, good dispersion, can prevent subsequently in the course of the polymerization process, titanium dioxide reunion in the polymer, impact
The performance of coating.
Preferably, described acrylic monomer is methyl methacrylate, Tert-butyl Methacrylate, acrylic acid -2-
One or more in ethyl ester, 2-(Acryloyloxy)ethanol；Described co-emulsifier is hexadecane, hexadecanol, n-amyl alcohol or Hexalin；Institute
Stating emulsifying agent is enuatrol, sodium lauryl sulphate, dodecylbenzene sodium sulfonate, Tween 80, polysorbas20, polyoxyethylene sorbitan mountain
One or more of pears alcohol trioleate, described initiator is one of hydrogen peroxide, potassium peroxydisulfate, Ammonium persulfate..
Preferably, the preparation of described boron nitrogen-doped nanometer titanium dioxide comprises the following steps:
(1) prepare boron nitrogen co-doped titanium dioxide sol-gel precursor；
(2) deionized water is added the nitrogen co-doped nano titanic oxide sol-Gel Precursor of boron through obtaining in step (1)
In, agitated, standing after obtain boron nitrogen co-doped nano titanium oxide wet gel；
(3) the boron nitrogen co-doped nano titanium oxide wet gel that will obtain through step (2) successively drying, grinding, after calcining
To the nitrogen co-doped nano titanium oxide of boron.
Preferably, in described step (1) the nitrogen co-doped nano titanic oxide sol-Gel Precursor of boron preparation method
For: the dehydrated alcohol that volume ratio is 10～15:1 is uniformly mixed with butyl titanate, configuration obtains mixture a；According to upper
The consumption stating butyl titanate weighs boron source and nitrogen source respectively, boron source and nitrogen source is mixed to get mixture b, in described mixture b
In butyl titanate in nitrogen and mixture a in boron element in boron source, nitrogen source, the mol ratio of titanium elements is: (0.2 ~ 0.9):
(0.1 ~ 0.8): (1 ~ 10)；Mixture a, mixture b are mixed to prepare mixture c, the ph adjusting mixture c is 3.5-4.5, stirs
Mixing obtains boron nitrogen co-doped titanium dioxide sol-gel precursor.
Preferably, described nitrogen source is thiourea or carbamide, described boron source is boric acid or triethyl borate.
Preferably, stir speed (S.S.) is 20-30r/min in described step (2), mixing time is 2-3h.
Preferably, drying temperature is 40-90 DEG C in described step (3), drying time is 16-30h；Described calcining heat
For 400-500 DEG C, calcination time is 3-5h.
Preferably, the method for described boron nitrogen-doped nanometer titanium dioxide surface modification is: 1.5～3 parts are prepared
Boron nitrogen-doped nanometer titanium dioxide be added in ethanol water, and make it fully dispersed under strong stirring；In dispersion liquid
0.5～2.5 part of organo silane coupling agent of middle addition, after magnetic agitation insulation reaction 1-3 hour, is cooled to room temperature sucking filtration, baking
Dry, grinding obtains the nitrogen-doped modified nano titanium oxide of silanization boron；Described organo silane coupling agent is vinyl triethoxyl
One of silane, vinyltrimethoxy silane, vinyl three (2- methoxy ethoxy) silane.
Silicon is carried out to boron nitrogen-doped nanometer titanium dioxide Surface coating silicon dioxide using the silane coupler containing vinyl
Alkanisation is processed so as to surface contains vinyl, can improve the compatibility of its and monomer, it is to avoid reunion, and vinyl can be with
Acrylate monomer copolymerization it is ensured that in polymerization process reaction stability, the storage stability of complex emulsions and nanometer two
Dispersibility in acrylate polymer for the titanium oxide is excellent.
The two of the above-mentioned technical purpose of the present invention are achieved through the following technical solutions:
By nitrogen-doped modified for 1.5～3 parts of boron nano titanium oxide, it is dispersed in 15～25 parts of acrylic ester monomers and 0.5～2 part
In the mixed liquor of co-emulsifier, stirring, ultrasonic disperse, add the emulsifying agent that consumption is 2～6 parts, consumption is 50～90 parts
Deionized water, stirring, ultrasonic disperse, it is heated to 40～90 DEG C, adds 0.3～0.6 part of initiator, be incubated 3～5h, obtain
Modified nano-titanium dioxide self-cleaning coating.
In sum, the method have the advantages that
1. in nano titanium oxide doped boron-nitrogen element, can forbidden band in introduce doped energy-band, so that forbidden band is narrowed, can inhale
Receive longer wavelengths of light, light absorbs band edge red shift, widened photoresponse scope, improve quantum efficiency, thus contributing to carrying
High photocatalysis efficiency.Codope on the basis of single doping, light absorbs red shift degree increases further it is seen that photoresponse increases
By force, degrading organic pollutant matter and under sunlight.The nitrogen co-doped rear titanium dioxide purity of another aspect boron is high,
Particle size is uniform in size, good dispersion, can prevent subsequently in the course of the polymerization process, titanium dioxide reunion in the polymer, shadow
Ring the performance of coating.
2., using the silane coupler modified nano titanium oxide containing vinyl so as to surface contains vinyl, can improve
Its compatibility with monomer, it is to avoid reunite, and vinyl can be with acrylate monomer copolymerization it is ensured that react in polymerization process
Stability, the storage stability of the complex emulsions and nano titanium oxide dispersibility in acrylate polymer is excellent.
Specific embodiment
Embodiment 1
A kind of nano titanium oxide self-cleaning coating, according to the mass fraction, its raw material includes following components:
The nitrogen-doped modified nano titanium oxide of boron 1.5
Tert-butyl Methacrylate 15
Sodium lauryl sulphate 2
Hexadecanol 0.5
Potassium peroxydisulfate 0.3
Deionized water 50
The preparation method of above-mentioned self-cleaning coating is: according to the mass fraction, by nitrogen-doped modified for 1.5 parts of silanization boron nano-silica
Change titanium, be dispersed in 15 parts of Tert-butyl Methacrylates and the mixed liquor of 0.5 part of hexadecanol, stirring, ultrasonic disperse, add use
Measure the sodium lauryl sulphate emulsifying agent for 2 parts, consumption is 50 parts of deionized water, stirring, ultrasonic disperse, it is heated to 40
DEG C, add 0.3 part of potassium peroxydisulfate initiator, be incubated 3h, obtain nano titanium oxide self-cleaning coating.
The preparation of the nitrogen-doped modified nano titanium oxide of above-mentioned boron includes: the preparation of (1) boron nitrogen-doped nanometer titanium dioxide:
Measure dehydrated alcohol respectively for 10:1 by volume to mix homogeneously with butyl titanate, configuration obtains mixture a；According to butyl titanate
Consumption weigh boric acid and carbamide respectively, mixing, obtain mixture b, nitrogen, metatitanic acid in boron element in its mesoboric acid, carbamide
In butyl ester, the mol ratio of titanium elements is: 0.2:0.1: 1；Mixture a, mixture b are mixed to prepare mixture c, adjust mixture
The ph of c is 4, and stirring is obtained boron nitrogen co-doped titanium dioxide sol-gel precursor, through 20r/min stir speed (S.S.), stirs 2h,
Obtain boron nitrogen co-doped nano titanium oxide wet gel after standing, be then passed through drying 16h, grinding at 40 DEG C, in Muffle furnace
After 400 DEG C of calcining 3h, obtain boron nitrogen-doped nanometer titanium dioxide.
(2) boron nitrogen-doped nanometer titanium dioxide surface modification: according to the mass fraction, 1.5 parts of boron nitrogen preparing are mixed
Miscellaneous nano titanium oxide is added in ethanol water, and makes it fully dispersed under strong stirring；0.5 is added in dispersion liquid
Part vinyltrimethoxy silane coupling agent, magnetic agitation insulation reaction, after 1 hour, is cooled to room temperature sucking filtration, drying, grinding
Obtain the nitrogen-doped modified nano titanium oxide of boron.
Embodiment 2
A kind of nano titanium oxide self-cleaning coating, according to the mass fraction, its raw material includes following components:
The nitrogen-doped modified nano titanium oxide of boron 3
2-(Acryloyloxy)ethanol 25
Tween 80 6
N-amyl alcohol 2
Hydrogen peroxidase 10 .6
Deionized water 90
The preparation method of above-mentioned nano titanium oxide self-cleaning coating is: according to the mass fraction, by nitrogen-doped modified for 3 parts of boron nanometer
Titanium dioxide, is dispersed in 25 parts of 2-(Acryloyloxy)ethanols and the mixed liquor of 6 parts of n-amyl alcohols, stirring, and ultrasonic disperse adds consumption
Tween 80 emulsifying agent for 6 parts, consumption are 90 parts of deionized water, stirring, and ultrasonic disperse is heated to 40 DEG C, adds 0.6
Part hydrogen peroxide initiator, is incubated 3h, obtains modified nano-titanium dioxide self-cleaning coating.
The preparation method of the nitrogen-doped modified nano titanium oxide of above-mentioned boron is: the system of (1) boron nitrogen-doped nanometer titanium dioxide
Standby: to measure dehydrated alcohol respectively for 15:1 by volume and mix homogeneously with butyl titanate, configuration obtains mixture a；According to metatitanic acid
The consumption of butyl ester weighs triethyl borate and thiourea respectively, mixing, obtains mixture b, boron element, sulfur wherein in triethyl borate
In nitrogen in urea, butyl titanate, the mol ratio of titanium elements is: 0.9:0.8: 10；Mixture a, mixture b are mixed to prepare mixed
Compound c, the ph adjusting mixture c is 4, and stirring is obtained boron nitrogen co-doped titanium dioxide sol-gel precursor, through 30r/min
Stir speed (S.S.), stir 3h, obtain boron nitrogen co-doped nano titanium oxide wet gel after standing, be then passed through at 90 DEG C dry 30h,
Grind, in Muffle furnace after 500 DEG C of calcining 5h, obtain boron nitrogen-doped nanometer titanium dioxide.
(2) boron nitrogen-doped nanometer titanium dioxide surface modification: according to the mass fraction, by 3 parts of boron N doping preparing
Nano titanium oxide is added in ethanol water, and makes it fully dispersed under strong stirring；Add 2.5 parts in dispersion liquid
VTES coupling agent, magnetic agitation insulation reaction is after 3 hours, is cooled to room temperature sucking filtration, drying, grinds
To the nitrogen-doped modified nano titanium oxide of boron.
Embodiment 3
A kind of nano titanium oxide self-cleaning coating, according to the mass fraction, its raw material includes following components:
The nitrogen-doped modified nano titanium oxide of boron 2
Acrylic acid-2-ethyl ester 20
Polyoxyethylene 20 sorbitan trioleate 4
Hexadecane 1.5
Ammonium persulfate. 0.5
Deionized water 70
The preparation method of above-mentioned modified nano-titanium dioxide self-cleaning coating is: according to the mass fraction, will be nitrogen-doped modified for 2 parts of boron
Nano titanium oxide, is dispersed in 20 parts of acrylic acid-2-ethyl esters and the mixed liquor of 1.5 parts of hexadecanes, stirring, ultrasonic disperse,
Add the polyoxyethylene 20 sorbitan trioleate emulsifying agent that consumption is 4 parts, consumption is 70 parts of deionized water, stirring,
Ultrasonic disperse, is heated to 40 DEG C, adds 0.5 part of ammonium persulfate initiator, is incubated 3h, obtains modified nano-titanium dioxide certainly
Cleaning coating.
The preparation method that above-mentioned boron N doping coats nano titanium oxide is: the system of (1) boron nitrogen-doped nanometer titanium dioxide
Standby: to measure dehydrated alcohol respectively for 12:1 by volume and mix homogeneously with butyl titanate, configuration obtains mixture a；According to metatitanic acid
The consumption of butyl ester weighs boric acid and carbamide respectively, mixing, obtains mixture b, nitrogen in boron element in its mesoboric acid, carbamide,
In butyl titanate, the mol ratio of titanium elements is: 0.6:0.5: 6；Mixture a, mixture b are mixed to prepare mixture c, adjust mixed
The ph of compound c is 4, and stirring is obtained boron nitrogen co-doped titanium dioxide sol-gel precursor, through 25r/min stir speed (S.S.), stirs
2.5h, obtains boron nitrogen co-doped nano titanium oxide wet gel after standing, be then passed through drying 25h, grinding at 70 DEG C, in Muffle
In stove after 450 DEG C of calcining 4.5h, obtain boron nitrogen-doped nanometer titanium dioxide.
(2) boron nitrogen-doped nanometer titanium dioxide surface modification: 2 parts of boron nitrogen-doped nanometer titanium dioxides preparing are added
Enter in ethanol water, and make it fully dispersed under strong stirring；1.5 parts of vinyl three (2- first are added in dispersion liquid
Epoxide ethyoxyl) silane coupler, magnetic agitation insulation reaction is after 2 hours, is cooled to room temperature sucking filtration, drying, grinding obtain
The nitrogen-doped modified nano titanium oxide of boron.
Embodiment 4
A kind of nano titanium oxide self-cleaning coating, according to the mass fraction, its raw material includes following components:
The nitrogen-doped modified nano titanium oxide of boron 2.5
Methyl methacrylate 18
Enuatrol 3
Hexalin 1.1
Potassium peroxydisulfate 0.4
Deionized water 60
The preparation method of above-mentioned modified nano-titanium dioxide self-cleaning coating is: according to the mass fraction, 2.5 parts of boron N doping is changed
Property nano titanium oxide, be dispersed in 18 parts of methyl methacrylates and the mixed liquor of 1.1 parts of Hexalin, stirring, ultrasonic disperse,
Add the enuatrol emulsifying agent that consumption is 3 parts, consumption is 60 parts of deionized water, stirring, ultrasonic disperse, it is heated to 40
DEG C, add 0.4 part of potassium peroxydisulfate initiator, be incubated 3h, obtain nano titanium oxide self-cleaning coating.The nitrogen-doped modified nanometer of boron
The preparation method of titanium dioxide is with embodiment 1.
Embodiment 5
A kind of nano titanium oxide self-cleaning coating, according to the mass fraction, its raw material includes following components:
The nitrogen-doped modified nano titanium oxide of boron 2.8
2-(Acryloyloxy)ethanol 22
Dodecylbenzene sodium sulfonate 5
N-amyl alcohol 1.8
Ammonium persulfate. 0.5
Deionized water 80
The preparation method of above-mentioned nano titanium oxide self-cleaning coating is: according to the mass fraction, receives nitrogen-doped modified for 2.8 parts of boron
Rice titanium dioxide, is dispersed in 22 parts of 2-(Acryloyloxy)ethanols and the mixed liquor of 1.8 parts of n-amyl alcohols, stirring, and ultrasonic disperse adds
The deionized water that dodecylbenzene sodium sulfonate emulsifying agent that consumption is 5 parts, consumption are 80 parts, stirring, ultrasonic disperse, heat temperature raising
To 40 DEG C, add 0.5 part of ammonium persulfate initiator, be incubated 3h, obtain modified nano-titanium dioxide self-cleaning coating.Boron N doping
The preparation method of modified nano-titanium dioxide is with embodiment 2.
Comparative example 1
Difference with embodiment 1 is the nano titanium oxide of self-cleaning coating use not through any process.
Performance test
1. contact angle detection: direct spraying self-cleaning coating of the present invention on the glass substrate, form automatic cleaning coating, standard conditions
Lower placement detected water contact angle using static contact angle instrument after 7 days, and result is as shown in the table:
Table 1 contact angle detection
2. photocatalysis checking: photocatalytic activity evaluation is carried out for target degradation product with 20mg/l methyl orange solution.Measure 50ml mesh
Mark degradation product solution, in culture dish, will scribble the glass substrate of self-cleaning coating formation coating, is immersed in target solution respectively,
And culture dish is placed in photocatalytic reaction device.Light source is the xenon lamp of 300w, at a distance of 20cm between sample and light source, uses 722
Type visible spectrophotometer measures the absorbance of target degradation product.With methyl orange solution at 465 nm a length of ginseng of maximum absorption wave
According to position, regularly measure absorbance after Xenon light shining for each example, thus calculating methyl orange solution residual concentration percentage ratio.Table
2 is methyl orange residual concentration percentage ratio.
Table 2 methyl orange residual concentration percentage ratio.
From table 1, the water contact angle number of degrees can be seen that the relative contrast example present invention and have good hydrophilic, with light
According to the increase of time, scribble the glass substrate water contact angle contact angle of formation coating of the self-cleaning coating of the present invention increasingly
Little, illustrate that wettability is become better and better, and wettability was better than not through processing nanometer titanium dioxide coating, through illumination in four days
The coating contact angle of the present invention is zero, and complete wetting has Superhydrophilic.From table 2, methyl orange residual concentration percentage ratio is permissible
Find out, through the modified nanometer titanium dioxide coating of doped boron-nitrogen, significantly larger than there is no modified painting to the degradation rate of methyl orange
Layer.This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, and those skilled in the art are readding
As needed the present embodiment can be made after running through this specification does not have the modification of creative contribution, but as long as the present invention's
All protected by Patent Law in right.
Claims (9)
1. a kind of nano titanium oxide self-cleaning coating it is characterised in that: according to the mass fraction, its composition includes following components:
The nitrogen-doped modified nano titanium oxide of boron 1.5～3
Acrylic ester monomer 15～25
Emulsifying agent 2～6
Co-emulsifier 0.5～2
Initiator 0.3～0.6
Deionized water 50～90
The nitrogen-doped modified nano titanium oxide preparation of described boron includes the preparation of boron nitrogen-doped nanometer titanium dioxide successively, boron nitrogen is mixed
Miscellaneous Surface Modification of Nanosized Titanium Dioxide step.
2. a kind of nano titanium oxide self-cleaning coating according to claim 1 it is characterised in that: described acrylic compounds list
Body is methyl methacrylate, Tert-butyl Methacrylate, acrylic acid-2-ethyl ester, one or more in 2-(Acryloyloxy)ethanol；
Described co-emulsifier is hexadecane, hexadecanol, n-amyl alcohol or Hexalin；Described emulsifying agent be enuatrol, sodium lauryl sulphate,
One or more of dodecylbenzene sodium sulfonate, Tween 80, polysorbas20, polyoxyethylene 20 sorbitan trioleate, described
Initiator is one of hydrogen peroxide, potassium peroxydisulfate, Ammonium persulfate..
3. a kind of nano titanium oxide self-cleaning coating according to claim 1 and 2 it is characterised in that: described boron nitrogen is mixed
The preparation of miscellaneous nano titanium oxide comprises the following steps:
(1) prepare boron nitrogen co-doped titanium dioxide sol-gel precursor；
(2) deionized water is added the nitrogen co-doped nano titanic oxide sol-Gel Precursor of boron through obtaining in step (1)
In, agitated, standing after obtain boron nitrogen co-doped nano titanium oxide wet gel；
(3) the boron nitrogen co-doped nano titanium oxide wet gel that will obtain through step (2) successively drying, grinding, after calcining
To the nitrogen co-doped nano titanium oxide of boron.
4. a kind of nano titanium oxide self-cleaning coating according to claim 3 it is characterised in that: in described step (1)
The preparation method of the nitrogen co-doped nano titanic oxide sol-Gel Precursor of boron is: the anhydrous second that volume ratio is 10～15:1
Alcohol is uniformly mixed with butyl titanate, and configuration obtains mixture a；Consumption according to above-mentioned butyl titanate weigh respectively boron source and
Nitrogen source, boron source and nitrogen source are mixed to get mixture b, in boron element in the boron source in described mixture b, nitrogen source nitrogen and
In butyl titanate in mixture a, the mol ratio of titanium elements is: (0.2 ~ 0.9): (0.1 ~ 0.8): (1 ~ 10)；By mixture a, mix
Compound b is mixed to prepare mixture c, and the ph adjusting mixture c is 3.5-4.5, and the prepared boron nitrogen co-doped titanium dioxide colloidal sol of stirring-
Gel Precursor.
5. a kind of nano titanium oxide self-cleaning coating according to claim 4 it is characterised in that: described nitrogen source be thiourea
Or carbamide, described boron source is boric acid or triethyl borate.
6. a kind of nano titanium oxide self-cleaning coating according to claim 3 it is characterised in that: in described step (2)
Stir speed (S.S.) is 20-30r/min, and mixing time is 2-3h.
7. a kind of nano titanium oxide self-cleaning coating according to claim 3 it is characterised in that: in described step (3)
Drying temperature is 40-90 DEG C, and drying time is 16-30h；Described calcining heat is 400-500 DEG C, and calcination time is 3-5h.
8. a kind of nano titanium oxide self-cleaning coating according to claim 2-7 any claim it is characterised in that:
The method of described boron nitrogen-doped nanometer titanium dioxide surface modification is: by 1.5～3 parts of boron nitrogen-doped nanometer dioxies preparing
Change titanium to be added in ethanol water, and make it fully dispersed under strong stirring；Adding 0.5～2.5 part in dispersion liquid has
Machine silane coupling agent, after magnetic agitation insulation reaction 1-3 hour, is cooled to room temperature sucking filtration, drying, grinding obtain silanization boron
Nitrogen-doped modified nano titanium oxide；Described organo silane coupling agent is VTES, vinyl trimethoxy
One of silane, vinyl three (2- methoxy ethoxy) silane.
9. a kind of nano titanium oxide self-cleaning coating according to claim 8 preparation method it is characterised in that: will
The nitrogen-doped modified nano titanium oxide of 1.5～3 parts of boron, be dispersed in 15～25 parts of acrylic ester monomers and 0.5～2 part help emulsifying
In the mixed liquor of agent, stirring, ultrasonic disperse, add the emulsifying agent that consumption is 2～6 parts, consumption is 50～90 parts of deionization
Water, stirring, ultrasonic disperse, it is heated to 40～90 DEG C, adds 0.3～0.6 part of initiator, be incubated 3～5h, obtain modification and receive
Rice titanium dioxide self-cleaning coating.
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| CN112724853A (en) * | 2020-12-28 | 2021-04-30 | 苏州亚周期智能科技有限公司 | High-temperature-resistant self-cleaning polyester film adhesive tape and preparation method thereof |
| CN113978058A (en) * | 2021-10-27 | 2022-01-28 | 张家港飞腾复合新材料股份有限公司 | Nano self-cleaning aluminum-plastic composite board and production process thereof |
| CN115806747A (en) * | 2022-11-19 | 2023-03-17 | 中信钛业股份有限公司 | Preparation method of titanium dioxide pigment for photovoltaic back panel film |
| CN115806747B (en) * | 2022-11-19 | 2024-03-29 | 中信钛业股份有限公司 | Preparation method of titanium dioxide pigment for photovoltaic backboard film |
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