CN109777230A - A kind of light catalyzed coating and preparation method thereof - Google Patents
A kind of light catalyzed coating and preparation method thereof Download PDFInfo
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- CN109777230A CN109777230A CN201910138702.9A CN201910138702A CN109777230A CN 109777230 A CN109777230 A CN 109777230A CN 201910138702 A CN201910138702 A CN 201910138702A CN 109777230 A CN109777230 A CN 109777230A
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- light catalyzed
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Abstract
The present invention relates to photocatalysis technology fields more particularly to a kind of light catalyzed coating and preparation method thereof.It includes following component: water-based emulsion 20%-45%；Non-metal optical catalysis material 5%-15%；Solvent 25%-50%；Filler 1-5% and auxiliary agent 5%-10%.Catalysis material and indoor wall decorative paint are used brushing mulching method by the light catalyzed coating, its coating formed after brushing has biggish specific surface area, stable and efficient photocatalytic activity can be provided, actual effect when catalysis material air cleaning indoors can be effectively improved.Preparation method is simple; photocatalytic activity is excellent; it is low in cost; simple production process; it is environmentally friendly material convenient for large-scale industrial production, can be applied to the surface of different substrate materials; such as: metal, plastics, cement wall, plant protection, ceramic material etc. and different scenes, such as: wall, external wall, outdoor road, underground parking etc. within doors.
Description
Technical field
The present invention relates to catalysis material technical fields more particularly to a kind of light catalyzed coating and preparation method thereof.
Background technique
With the continuous improvement of people's living standards, house or interior decoration start to become to become increasingly complex with it is luxurious.
It in the process, can be generally using materials such as paint, artificial hard board and binders.
These finishing materials can discharge a large amount of volatile organic matters, cause room air pollution, cause respiratory disease, very
To being the serious diseases such as pulmonary infection or leukaemia.Therefore, how effective solution air pollution problem inside rooms become people
Focus of attention, and thus emerged many different types of purifications and clean technologies.
In these purifications and clean technologies, based on the photocatalysis technology of solar energy, low energy consumption with it, the spies such as environmental-friendly
It puts and has been a great deal of attention.
The principle of photocatalysis technology is: some specific catalysis materials can be excited under illumination condition, generation
Light induced electron and photohole then form the extremely strong superoxide radical of oxidizing force and hydroxyl with oxygen in air and water molecule reaction
Base free radical.These substances can be with indoor air pollutants and the liquid phases such as dyestuff, organic nitrogen, organic phosphorus such as formaldehyde, benzene, TVOC
Redox reaction occurs for organic pollutant, hazardous air pollutants is degraded to innocuous substance, to play degradation of contaminant
Effect, realize purification air purpose.
In the implementation of the present invention, it is found by the applicant that following problem exists in the prior art: existing photocatalysis material
Expect that the application effect in terms of air cleaning indoors is unsatisfactory.On the one hand, traditional catalysis material (such as TiO2) need to make
It is acted on ultraviolet excitation competence exertion.It is low by ultraviolet light energy shared in visible light, damage is be easy to cause to human health
Harmful limitation, application effect are bad.
On the other hand, catalysis material is usually powdered or block-like solid.Its longer air that is relatively hard to keep
Clarification time or the entire interior space of covering.
Summary of the invention
Place in view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of light catalyzed coating and its preparations
Method, it is intended to solve the problems, such as that existing catalysis material practical application effect is undesirable.
In order to achieve the above object, first aspect of the embodiment of the present invention provides a kind of light catalyzed coating.Wherein, by quality hundred
Score calculates, and the light catalyzed coating includes the following raw material component:
Optionally, the auxiliary agent is selected from coalescing agent, dispersing agent, stabilizer, lubricant, defoaming agent, levelling agent, thickening
One or more of agent, curing agent and crosslinking agent.
Optionally, it calculates by mass percentage, the light catalyzed coating includes the following raw material component:
Optionally, the filler includes calcium carbonate and silica.
Optionally, the water-based emulsion is aqueous silicone acrylic emulsion, waterborne styrene-acrylic emulsion or polyaminoester emulsion.
Optionally, the catalysis material be selected from nano nonmetal catalysis material, nonmetal doping catalysis material with
And one or more of nonmetallic composite photocatalyst material；
The nano nonmetal catalysis material includes one or more of carbonitride and boron nitride；It is described nonmetallic
Doping catalysis material includes carbon doping one or more of catalysis material and N doping catalysis material；The non-gold
Belonging to composite photocatalyst material includes C3N4- graphene composite material and C3N4-SiO2One or more of composite material.
Optionally, the solvent is aqueous solvent.
The second aspect of the embodiment of the present invention additionally provides a kind of preparation method of light catalyzed coating.Wherein, the preparation
Method includes the following steps:
According to above-mentioned mass percent, by catalysis material, water-based emulsion, stabilizer, dispersing agent and coalescing agent
It is uniformly mixed and disperses, prepare photocatalysis dispersion emulsion；
According to above-mentioned mass percent, levelling agent, thickener and defoaming agent are added in water and stirs, preparation dilution is molten
Liquid；
The photocatalysis dispersion emulsion is mixed with the dilute solution, prepares the light catalyzed coating.
Optionally, the preparation photocatalysis dispersion emulsion, is specifically included: being ground using sand mill or ball mill,
And under setting speed, disperse scheduled jitter time to prepare the photocatalysis dispersion emulsion.
Optionally, it is described prepare the light catalyzed coating include: the photocatalysis dispersion emulsion be added it is described dilution it is molten
It is stirred while liquid；After the smooth dispersion emulsion is added, continue to stir preset mixing time described to prepare
Light catalyzed coating.
Light catalyzed coating provided in an embodiment of the present invention is organic by catalysis material and the common coating of indoor wall decoration
In conjunction with.Its coating formed after brushing has biggish specific surface area, can provide stable and efficient photocatalytic activity, from
And effectively improve practical application effect when catalysis material air cleaning indoors.
In addition, the mild condition of the preparation method of the light catalyzed coating, realization step are simple, photocatalytic activity is excellent, real
Existing low in cost, simple production process is controllable, is convenient for large-scale industrial production, is with a wide range of applications, environmental-protection section bar
Expect preparation light catalyzed coating, be it is environmentally friendly, can be widely applied for the surface of different substrate materials, such as: metal, modeling
Material, cement wall, plant protection, ceramic material etc. are also applied for different scenes, such as: wall, external wall, outdoor within doors
Road, underground parking, charge station etc..
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element.It removes
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is the method flow diagram of the preparation method of the light catalyzed coating of the specific embodiment of the invention.
Specific embodiment
To make the purpose of the present invention, technical solution and effect clearer, clear and definite, right as follows in conjunction with drawings and embodiments
The present invention is further described.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to
Limit the present invention.
The numerical value disclosed in the embodiment of the present invention is approximation, and and non-determined value.Allow in error or experiment condition
In the case where, it may include all values in error range and be not limited to specific value disclosed in the embodiment of the present invention.
The numberical range disclosed in the embodiment of the present invention is for indicating the relative quantity of component in the mixture and its other party
The range of the temperature or other parameters enumerated in method embodiment.One or more numerical point in the numberical range is appropriate
Under conditions of obtain.
Coating is raw material very common during one kind is fitted up indoors.It can brush the table in interior spaces such as metopes
Face forms corresponding coating to provide corresponding decorative effect.Based on widely applied characteristic, the present embodiment possessed by coating
Provide a kind of coating with air-cleaning function.It is added to additional photocatalysis material on the basis of common coating
Material, makes it have photocatalytic activity, and the coating of formation can continue and effectively carry out air cleaning.
In the present embodiment, it calculates by mass percentage, the light catalyzed coating includes the following raw material component:
Wherein, water-based emulsion is the aqueous high molecular solution with good environmental-protecting performance.Its base as light catalyzed coating
Plinth substance, the anti-scratch equal use function having to provide coating.
Specifically, the water-based emulsion can be any suitable type, after the water-base resin dissolution that can satisfy use demand
The dispersion of generation, such as aqueous silicone acrylic emulsion, waterborne styrene-acrylic emulsion or polyaminoester emulsion.
Filler is the solid particulate matter for shading, dyeing or adjustment processing performance etc..In some embodiments, described
Filler can choose the mixture using calcium carbonate and silica.It is of course also possible to according to the needs of actual conditions, add it
The filler of his type.Solvent is the liquid for dissolving above-mentioned raw materials component.In the present embodiment, it can simply select to make using water
For solvent.
Auxiliary agent is incorporated into coating, and based on physics, perhaps chemical action promotes the processing performance or usability of coating
The substance of energy etc..In some embodiments, the auxiliary agent may include dispersing agent, stabilizer, defoaming agent, thickener, crosslinking agent
Equal function additives.
Specifically, technical staff can select the catalysis material of suitable type according to the needs of actual conditions, including but
It is not limited to nano nonmetal catalysis material, nonmetal doping catalysis material, nonmetallic composite photocatalyst material.The nanometer
Non-metal optical catalysis material includes one or more of carbonitride and boron nitride；The nonmetal doping catalysis material packet
Include carbon doping one or more of catalysis material and N doping catalysis material；The nonmetallic composite photocatalyst material
Including one or more of C3N4- graphene composite material and C3N4-SiO2 composite material.
Due to traditional catalysis material (such as TiO2) ultraviolet light has ultraviolet ray intensity and illumination condition to excite
Special requirement, and ultraviolet light only accounts for 4% or so of solar energy, and certain damage can be caused to human health, it can not
Prolonged irradiation.
Therefore, in the preferred embodiment, which can choose using with visible light-responded photocatalysis
Nano material, the coating that coating is formed keep stable and efficient photocatalytic activity, air pollutants removal rate
Higher (visible light (400~750nm) then accounts for the 43% of solar energy).
The embodiment of the present invention combines catalysis material with Environmental Protective Water-paint, obtains the water with air-cleaning function
Property environmental protection coating material.The use demand of itself and interior decoration is mutually agreed with, and has boundless market and application prospect.Moreover, choosing
With the photocatalysis nano material of visible light catalytic, can have efficient and stable photocatalysis, sky in visible-range
Gas purification and anti-microbial property.
Fig. 1 is the method flow diagram of the light catalyzed coating preparation method of the embodiment of the present invention.As shown in Figure 1, the preparation side
Method includes the following steps:
110, it is calculated in mass percent, by the catalysis material of 5%-15%, the water-based emulsion of 20%-50%, 0.4%-
The coalescing agent of 1.6% stabilizer, the dispersing agent of 2%-8% and 0.5%-1% mixes, and prepares photocatalysis dispersion emulsion.
Specifically, mixture after mixing can be ground on sand mill or ball mill, and turn in setting
High speed dispersion is carried out under fast (such as 1000-5000rpm) to prepare the photocatalysis dispersion emulsion.
Carry out high speed dispersion specifically required for the time can determine according to the actual situation, such as 1-1.5 hours with true
It protects and obtains good dispersion effect, form stable emulsion dispersion system.It is amazing to be, the catalysis material, dispersion
Agent and water-based emulsion are using the balance between above-mentioned suitable ratio acquirement catalysis material concentration and good dispersion, to obtain
Obtain optimal using effect.
120, suitable levelling agent, thickener and defoaming agent are added in water and stirs, prepares dilute solution.
Specifically, calculated according to mass percent, when preparing dilute solution, above-mentioned levelling agent, thickener and defoaming agent
Additional amount can according to need, control between 0.5%-1%.
130, the photocatalysis dispersion emulsion is mixed with the dilute solution, prepares the light catalyzed coating.
According to suitable ratio, the photocatalysis dispersion emulsion that step 110 prepares is carried out using dilute solution abundant
After dilution, the light catalyzed coating can be prepared for interior decoration.
Specifically, in order to guarantee that dilute solution and photocatalysis dispersion emulsion can be stirred evenly and be sufficiently mixed, on the one hand
The addition speed that can control the photocatalysis dispersion emulsion enables it be slowly added into dilution with the speed lower than specific threshold value
In solution.
On the other hand, it can also be stirred while the dilute solution is added in the photocatalysis dispersion emulsion, and
And after the smooth dispersion emulsion is added, continue to stir preset mixing time to prepare the light catalyzed coating.
Specific mixing time can be determined according to the actual situation by technical staff, it is only necessary to be can satisfy and be sufficiently mixed
Uniformly need.For example, mixing time can be controlled at 1-2 hours.
Preparation method provided in an embodiment of the present invention has reaction condition mild, simple process, the photocatalytic activity of product
Excellent, low in cost, simple production process is easily-controllable and the advantages of being easy to implement industrialized production, and it is net to can be widely applied for air
Change field, especially Environmental Protective Water-paint field, ep-type material preparation light catalyzed coating, be it is environmentally friendly, can
Extensively, for example applied to the surface of different substrate materials: metal, plastics, cement wall, plant protection, ceramic material etc. are also applied for
Different scenes, such as: wall, external wall, outdoor road, underground parking, charge station etc. within doors.
Based on preparation method shown in FIG. 1, with the present invention will be described in detail, embodiment provides several specific examples presented below
Light catalyzed coating preparation method.
Embodiment 1:
1) it calculates by mass percentage, the raw material composition of light catalyzed coating are as follows:
Surplus is aqueous solvent.
2) preparation process:
Firstly, by 6% catalysis material, 30% water-based emulsion, 1% stabilizer, 2% dispersing agent, 0.5%
Coalescing agent and 0.5% binder be uniformly mixed, ground using ball mill or sand mill, under 5000rpm high speed
After dispersion 1 hour, photocatalysis dispersion liquid is made.
Secondly, 0.5% thickener, 0.5% levelling agent and 0.5% defoaming agent and high-speed stirred 0.5 are added in water
After hour, dilute solution is made.
Finally, stirring while photocatalysis dispersion liquid is slowly added to dilute solution, and photocatalysis dispersion liquid is being added
After, continue stirring 1 hour, mixes them thoroughly to obtain the light catalyzed coating.
3) purifying property is tested:
Firstly, the light catalyzed coating prepared is coated in transparent glass plate surface.Then, the photocatalysis is waited to apply
Material is completely dried, and forms corresponding coating.Finally, carrying out nitrogen oxides test to coating.
After 24 hours, the test result of coating is shown, 24 hours Degradation Formaldehyde rates of the coating formed after dry are
96.7%, 24 hours TVOC degradation rates are 96%.
The light catalyzed coating that the embodiment of the present invention obtains has excellent air cleaning performance, and the light catalyzed coating of acquisition is answered
For the surfaces (metal, plastics, cement wall, plant protection, ceramic material etc.) of different substrate materials, different scenes (within doors wall,
External wall, outdoor road, underground parking, charge station etc.).
Embodiment 2:
1) it calculates by mass percentage, the raw material composition of light catalyzed coating are as follows:
Surplus is aqueous solvent.
2) preparation process:
Firstly, by 10% catalysis material, 30% water-based emulsion, 1% stabilizer, 2.5% dispersing agent, 1%
Coalescing agent and 0.5% binder be uniformly mixed, ground using ball mill or sand mill, under 5000rpm high speed
After dispersion 1 hour, photocatalysis dispersion liquid is made.
Secondly, in water be added 0.5% binder, 0.5% defoaming agent and 0.5% levelling agent and high-speed stirred
After 0.5 hour, dilute solution is made.
Finally, stirring while photocatalysis dispersion liquid is slowly added to dilute solution, and be added in photocatalysis dispersion liquid
After, continue stirring 1 hour, mixes them thoroughly to obtain the light catalyzed coating.
3) purifying property is tested:
Firstly, the light catalyzed coating prepared is coated in transparent glass plate surface.Then, the photocatalysis is waited to apply
Material is completely dried, and forms corresponding coating.Finally, carrying out nitrogen oxides test to coating.
After 24 hours, the test result of coating is shown, 24 hours Degradation Formaldehyde rates of the coating formed after dry are
95%.
The purifying property of the light catalyzed coating that the embodiment of the present invention obtains excellent formaldehyde and nitrogen oxides, coating adapt to use
In the surfaces (metal, plastics, cement wall, plant protection, ceramic material etc.) of different substrate materials, different scenes (within doors wall, build
Build exterior wall, outdoor road, underground parking, charge station etc.).
Embodiment 3:
1) it calculates by mass percentage, the raw material composition of light catalyzed coating are as follows:
Surplus is aqueous solvent.
2) preparation process:
Firstly, by 10% catalysis material, 30% water-based emulsion, 1% stabilizer, 2% dispersing agent, 0.5%
Coalescing agent and 0.5% binder be uniformly mixed, ground using ball mill or sand mill, under 5000rpm high speed
After dispersion 1 hour, photocatalysis dispersion liquid is made.
Secondly, according to the above ratio, 0.5% binder, 0.5% thickener and 5% filler and high are added in water
After speed stirring 0.5 hour, dilute solution is made.
3) purifying property is tested:
Firstly, dilute solution is coated uniformly on transparent glass plate surface, dried for standby.Then, continue after the drying
Transparent glass plate surface uniformly coats the photocatalysis dispersion liquid prepared, and corresponding coating is formed after it is completely dried.Most
Afterwards, nitrogen oxides test is carried out to coating.
After 24 hours, the test result of coating is shown, 24 hours Degradation Formaldehyde rates of the coating formed after dry are
94%.
The pollutant purifications performances such as the excellent formaldehyde of the light catalyzed coating that the embodiment of the present invention obtains, and have silica
As protection shell, substrate damage is prevented, coating is applied to surface (metal, plastics, cement wall, the plant guarantor of different substrate materials
Shield, ceramic material etc.), different scenes (wall, external wall, outdoor road, underground parking, charge station etc. within doors).
The preparation condition of preparation method provided in an embodiment of the present invention is mild, and simply, photocatalytic activity is excellent, it can be achieved that big
Technical scale metaplasia produces, and can be widely applied for air purification field.Moreover, showing photocatalysis by nitrogen oxides test result
Coating PARA FORMALDEHYDE PRILLS(91,95), TVOC and nitrogen oxides etc. have preferable removal rate.
In conclusion the light catalyzed coating has excellent photocatalytic activity, good photochemical stability and higher
Thermal stability is applied conducive in actually finishing.It combines Environmental Protective Water-paint with catalysis material, can be large-scale
It is used in fitment process, to improve the application effect in catalysis material air cleaning indoors well.
It, can according to the technique and scheme of the present invention and this hair it is understood that for those of ordinary skills
Bright design is subject to equivalent substitution or change, and all these changes or replacement all should belong to the guarantor of appended claims of the invention
Protect range.
Claims (10)
1. a kind of light catalyzed coating, which is characterized in that calculate by mass percentage, the light catalyzed coating includes the following raw material group
Point:
2. light catalyzed coating according to claim 1, which is characterized in that the auxiliary agent is selected from coalescing agent, dispersing agent, steady
Determine one or more of agent, lubricant, defoaming agent, levelling agent, thickener, curing agent and crosslinking agent.
3. light catalyzed coating according to claim 2, which is characterized in that calculate by mass percentage, the photocatalysis applies
Material includes the following raw material component:
4. light catalyzed coating according to claim 1-3, which is characterized in that the filler includes calcium carbonate and two
Silica.
5. light catalyzed coating according to claim 1-3, which is characterized in that the water-based emulsion is aqueous silicon third
Lotion, waterborne styrene-acrylic emulsion or polyaminoester emulsion.
6. light catalyzed coating according to claim 1-3, which is characterized in that the catalysis material is selected from: being received
One of rice non-metal optical catalysis material, nonmetal doping catalysis material and nonmetallic composite photocatalyst material are more
Kind；
The nano nonmetal catalysis material includes one or more of carbonitride and boron nitride；The nonmetal doping
Catalysis material includes carbon doping one or more of catalysis material and N doping catalysis material；It is described nonmetallic multiple
Light combination catalysis material includes C3N4- graphene composite material and C3N4-SiO2One or more of composite material.
7. light catalyzed coating according to claim 1-3, which is characterized in that the solvent is aqueous solvent.
8. a kind of preparation method of light catalyzed coating, which is characterized in that the described method includes:
According to mass percent as described in claim 1, by catalysis material, water-based emulsion, stabilizer, dispersing agent and at
The mixing of film auxiliary agent, prepares photocatalysis dispersion emulsion；
According to mass percent as described in claim 1, levelling agent, thickener and defoaming agent are added in water and stirs, makes
Standby dilute solution；
The photocatalysis dispersion emulsion is mixed with the dilute solution, prepares the light catalyzed coating.
9. preparation method according to claim 8, which is characterized in that the preparation photocatalysis dispersion emulsion specifically includes:
It is ground using sand mill or ball mill, and under setting speed, disperses scheduled jitter time to prepare
State photocatalysis dispersion emulsion.
10. preparation method according to claim 8, which is characterized in that described to prepare the light catalyzed coating and include:
It is stirred while the dilute solution is added in the photocatalysis dispersion emulsion；
After the smooth dispersion emulsion is added, continue to stir preset mixing time to prepare the light catalyzed coating.
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| CN110527367A (en) * | 2019-10-12 | 2019-12-03 | 中北大学 | A kind of indoor visible light long-acting bacteriostatic water paint |
| CN110776797A (en) * | 2019-11-14 | 2020-02-11 | 立邦涂料（中国）有限公司 | Two-dimensional boron nitride modified emulsion paint and preparation method thereof |
| CN111165235A (en) * | 2019-12-31 | 2020-05-19 | 赵梓权 | Photocatalytic spray type insect-proof antibacterial fresh-keeping liquid and preparation method thereof |
| CN111647288A (en) * | 2020-04-13 | 2020-09-11 | 赵梓权 | Environment-friendly coating and preparation method thereof |
| CN112266666A (en) * | 2020-09-17 | 2021-01-26 | 赵梓俨 | Photocatalytic environment-friendly coating for purifying air pollutants and preparation method thereof |
| CN113813943A (en) * | 2021-10-20 | 2021-12-21 | 同曦集团有限公司 | Efficient photocatalytic filter screen for VOC (volatile organic compounds) treatment and preparation method thereof |
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| CN110527367A (en) * | 2019-10-12 | 2019-12-03 | 中北大学 | A kind of indoor visible light long-acting bacteriostatic water paint |
| CN110776797A (en) * | 2019-11-14 | 2020-02-11 | 立邦涂料（中国）有限公司 | Two-dimensional boron nitride modified emulsion paint and preparation method thereof |
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| CN112266666A (en) * | 2020-09-17 | 2021-01-26 | 赵梓俨 | Photocatalytic environment-friendly coating for purifying air pollutants and preparation method thereof |
| CN113813943A (en) * | 2021-10-20 | 2021-12-21 | 同曦集团有限公司 | Efficient photocatalytic filter screen for VOC (volatile organic compounds) treatment and preparation method thereof |
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