CN105440745A - Organic-inorganic hybrid photocatalyst coating and preparation method thereof - Google Patents
Organic-inorganic hybrid photocatalyst coating and preparation method thereof Download PDFInfo
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- CN105440745A CN105440745A CN201510842394.XA CN201510842394A CN105440745A CN 105440745 A CN105440745 A CN 105440745A CN 201510842394 A CN201510842394 A CN 201510842394A CN 105440745 A CN105440745 A CN 105440745A
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Abstract
The invention provides an organic-inorganic hybrid photocatalyst coating. The organic-inorganic hybrid photocatalyst coating is characterized by comprising raw materials in percentage by mass as follows: 2%-6% of nano-TiO2, 15%-30% of a potash water glass solution, 25%-35% of white carbon black, 5%-21% of a glycollic acid aqueous solution, 1.5%-5% of a silicone acrylic emulsion and the balance of water, wherein the mass percentage of the potash water glass solution is 50%-80%, and the mass percentage of the glycollic acid aqueous solution is 15%-25%. The coating has better water resistance and bonding force, good abrasion resistance and the better photocatalytic degradation effect on nitric oxides. The invention further provides a preparation method of the organic-inorganic hybrid photocatalyst coating.
Description
Technical field
The invention belongs to technical field of chemical paint, be specifically related to a kind of photocatalyst coating and preparation method thereof.
Background technology
Photocatalyst nano titanium oxide is combined with coated material, preparation has the coating of photocatalysis effect, being coated on road surface, hard shoulder, edge, roadside, railing etc., can effectively absorbing and decomposing automobile exhaust, will be the application direction of the pollution that the tail gas administering more and more motor vehicle emission causes.Meanwhile, aqueous inorganic paint is medium with water, have nontoxic, tasteless, containing volatile and other organic substances, easy construction, a series of advantage such as raw material resources is abundant, price is lower.It is high that aqueous inorganic paint has hardness, the advantage that wear resistance is good, but the maximum shortcoming of aqueous inorganic paint is that water tolerance and cohesive force are poor, and these shortcomings hinder its widespread use.
Summary of the invention
In view of this, the present invention is necessary provides a kind of hybrid inorganic-organic photocatalyst coating and preparation method thereof, and this coating has good water tolerance and cohesive force, has good wear resisting property, and the effect of photocatalytic degradation oxynitride is also relatively good.
The invention provides a kind of hybrid inorganic-organic photocatalyst coating, it comprises the raw material of following massfraction: nano titanium oxide 2% ~ 6%, potash water glass solution 15% ~ 30%, white carbon black 25% ~ 35%, oxyacetic acid 5% ~ 21%, organosilicon crylic acid latex 1.5% ~ 5%, surplus are water, wherein, the massfraction of described potash water glass solution is 50% ~ 80%, and the massfraction of described glycolic acid aqueous solution is 15% ~ 25%.
Based on above-mentioned, it comprises the raw material of following massfraction: nano titanium oxide 3.5% ~ 5%, potash water glass solution 20% ~ 25%, white carbon black 28% ~ 30%, glycolic acid aqueous solution 10% ~ 16%, organosilicon crylic acid latex 2.5% ~ 4%, surplus are water.
Based on above-mentioned, the primary particle size of described nano titanium oxide is 30 ~ 80nm; Preferably, the crystal formation of described nano titanium oxide is Detitanium-ore-type.
The invention provides a kind of preparation method of above-mentioned hybrid inorganic-organic photocatalyst coating, comprise the following steps:.
Crystal formation is that the nano titanium oxide of Detitanium-ore-type can absorb energy under the irradiation of the UV-light of UV-light or sunlight, a lot of electron-hole pairs is formed on its surface, these electron-hole pairs have very strong redox ability, can the obnoxious flavour such as oxynitrides, sulfide, nitrogen protoxide in degradation of organic substances and vehicle exhaust, also have very strong sterilizing ability.Titanium dioxide is harmless, is environmentally friendly material.
Containing hydroxyl and carboxyl in its molecule of oxyacetic acid in hybrid inorganic-organic photocatalyst coating provided by the invention, the oxyacetic acid made not only has acidity, also there is stronger polarity, wetting ability, both can dissolved organic matter, again can the inorganics such as dissolved water, so oxyacetic acid can also play the effect of wetting dispersing agent; White carbon black is larger with the bonding strength of body of wall, can strengthen the hardness of film, and clean surfaces ability is also relatively good; After potash water glass mixes with a certain amount of oxyacetic acid and white carbon black, the inorganic paint of low-temperature curing can be obtained, this coating and metal, cement, various brick, stone etc. have good bonding force, there is the characteristic such as water-fast, acidproof, corrosion-resistant, weather-proof, high temperature resistant, fire-retardant more by force, and to environment and healthy toxicological harmless effect, abundance, cheap, water-based organic-inorganic hybridization coating is re-dubbed with a certain amount of organosilicon crylic acid latex, organosilicon crylic acid latex can strengthen film snappiness, water tolerance and cohesive strength etc., improves the performance of potash water glass coating.
Room temperature more than 48 solidifications can be placed, this coating main raw material abundance after hybrid inorganic-organic photocatalyst coating construction provided by the invention, cheap; This coating not only water tolerance and cohesiveness is all relatively good, but also has the ability of very strong photocatalytic degradation vehicle exhaust, can be widely used in road surface, hard shoulder, edge, roadside, the places such as railing, effectively prevent the topsoil that vehicle exhaust causes; This coating can in self-vulcanizing, easy construction, is convenient to the method constructions such as outdoor spray, brush; This Paint preparation technology is simple, and processing parameter ratio is easier to control.In addition, the present invention fully efficiently utilizes potassium feldspar decomposition, achieves manufacture process and produces without the three wastes, energy consumption is low, output is high, the rate of recovery is high, can be continuously produced.
Embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment 1
The embodiment of the present invention 1 provides a kind of hybrid inorganic-organic photocatalyst coating, and it is made up of the raw material of following massfraction: particle diameter is the nano titanium oxide 2g of 30 ~ 50nm, potash water glass solution 30g, the white carbon black 25g of 50%, glycolic acid aqueous solution 5g, the organosilicon crylic acid latex 1.5g of 25% and water 36.5g.
The above-mentioned photocatalyst coating that embodiment 1 provides is prepared by following steps: the 5g glycolic acid aqueous solution being 25% by mass concentration is added drop-wise to massfraction in potash water glass solution described in the 30g of 50%, forms the first mixed solution; To get crystal formation be Detitanium-ore-type primary particle particle diameter is that the nano titanium oxide 2g of 30 ~ 50nm and white carbon black 25g add in described first mixed solution, and stirs, and after being uniformly dispersed, forms the second mixed solution; Described second mixed solution is joined in the organosilicon crylic acid latex of 2g, finally adds the water of 36g, then be uniformly dispersed with the rotating speed of 200 revs/min stirring 25min, namely obtain coating.
The above-mentioned coating that embodiment 1 provides is coated on sheet glass, is cured maintenance.With reference to the test carrying out cohesive strength under the status criteria state of JG/T3049-1998, carry out paint film water resistance test with reference under the state of GB/T1733-93, the cohesive force of coating reaches 2.0MPa, and water tolerance reaches 35 days.Use the 18W ultraviolet lamp that the main wave band of light source is 365nm, the sheet glass of film is positioned over the degradation experiment carrying out nitrogen peroxide in photochemical catalysis test box, in container, the starting point concentration of nitrogen peroxide is 9.3mg/m
3, detector continues the photodegradation situation detecting nitrogen dioxide gas, and in 100min, the degradation rate of nitrogen peroxide is 90%.
Embodiment 2
Nano titanium oxide 3.5% ~ 5%, potash water glass solution 20% ~ 25%, white carbon black 28% ~ 30%, glycolic acid aqueous solution 10% ~ 16%, organosilicon crylic acid latex 2.5% ~ 4%
The embodiment of the present invention 2 provides a kind of hybrid inorganic-organic photocatalyst coating, and it is made up of the raw material of following massfraction: particle diameter is the nano titanium oxide 3.5g of 50 ~ 70nm, potash water glass solution 25g, the white carbon black 28g of 60%, glycolic acid aqueous solution 10g, the organosilicon crylic acid latex 2.5g of 20% and water 31g.The preparation method of this hybrid inorganic-organic photocatalyst coating is substantially identical with the preparation method that the first embodiment provides, and difference is: the ratio of each raw material is different.
The above-mentioned coating that embodiment 2 provides is coated on sheet glass, is cured maintenance.With reference to the test carrying out cohesive strength under the status criteria state of JG/T3049-1998, carry out paint film water resistance test with reference under the state of GB/T1733-93, the cohesive force of coating reaches 2.5MPa, and water tolerance reaches 40 days.Use the 18W ultraviolet lamp that the main wave band of light source is 365nm, the sheet glass of film is positioned over the degradation experiment carrying out nitrogen peroxide in photochemical catalysis test box, in container, the starting point concentration of nitrogen peroxide is 9.3mg/m
3, detector continues the photodegradation situation detecting nitrogen dioxide gas, and in 100min, the degradation rate of nitrogen peroxide is 92%.
Embodiment 3
The embodiment of the present invention 3 provides a kind of hybrid inorganic-organic photocatalyst coating, and it is made up of the raw material of following massfraction: particle diameter is the nano titanium oxide 4g of 60 ~ 70nm, potash water glass solution 28g, the white carbon black 30g of 65%, glycolic acid aqueous solution 13g, the organosilicon crylic acid latex 3.3g of 20% and water 21.7g.The preparation method of this hybrid inorganic-organic photocatalyst coating is substantially identical with the preparation method that the first embodiment provides, and difference is: the ratio of each raw material is different.
The above-mentioned coating that embodiment 3 provides is coated on sheet glass, is cured maintenance.With reference to the test carrying out cohesive strength under the status criteria state of JG/T3049-1998, carry out paint film water resistance test with reference under the state of GB/T1733-93, the cohesive force of coating reaches 2.8MPa, and water tolerance reaches 45 days.Use the 18W ultraviolet lamp that the main wave band of light source is 365nm, the sheet glass of film is positioned over the degradation experiment carrying out nitrogen peroxide in photochemical catalysis test box, in container, the starting point concentration of nitrogen peroxide is 9.3mg/m
3, detector continues the photodegradation situation detecting nitrogen dioxide gas, and in 100min, the degradation rate of nitrogen peroxide is 96%.
Embodiment 4
Nano titanium oxide 3.5% ~ 5%, potash water glass solution 20% ~ 25%, white carbon black 28% ~ 30%, glycolic acid aqueous solution 10% ~ 16%, organosilicon crylic acid latex 2.5% ~ 4%
The embodiment of the present invention 4 provides a kind of hybrid inorganic-organic photocatalyst coating, and it is made up of the raw material of following massfraction: particle diameter is the nano titanium oxide 5g of 50 ~ 70nm, potash water glass solution 20g, the white carbon black 32g of 70%, glycolic acid aqueous solution 16g, the organosilicon crylic acid latex 4g of 17% and water 23g.The preparation method of this hybrid inorganic-organic photocatalyst coating is substantially identical with the preparation method that the first embodiment provides, and difference is: the ratio of each raw material is different.
The above-mentioned coating that embodiment 4 provides is coated on sheet glass, is cured maintenance.With reference to the test carrying out cohesive strength under the status criteria state of JG/T3049-1998, carry out paint film water resistance test with reference under the state of GB/T1733-93, the cohesive force of coating reaches 2.9MPa, and water tolerance reaches 42 days.Use the 18W ultraviolet lamp that the main wave band of light source is 365nm, the sheet glass of film is positioned over the degradation experiment carrying out nitrogen peroxide in photochemical catalysis test box, in container, the starting point concentration of nitrogen peroxide is 9.3mg/m
3, detector continues the photodegradation situation detecting nitrogen dioxide gas, and in 100min, the degradation rate of nitrogen peroxide is 94%.
Embodiment 5
Nano titanium oxide 2% ~ 6%, potash water glass solution 15% ~ 30%, white carbon black 25% ~ 35%, oxyacetic acid 5% ~ 21%, organosilicon crylic acid latex 1.5% ~ 5%
The embodiment of the present invention 5 provides a kind of hybrid inorganic-organic photocatalyst coating, and it is made up of the raw material of following massfraction: particle diameter is the nano titanium oxide 6g of 40 ~ 80nm, potash water glass solution 15g, the white carbon black 35g of 80%, glycolic acid aqueous solution 21g, the organosilicon crylic acid latex 5g of 15% and water 18g.The preparation method of this hybrid inorganic-organic photocatalyst coating is substantially identical with the preparation method that the first embodiment provides, and difference is: the ratio of each raw material is different.
The above-mentioned coating that embodiment 5 provides is coated on sheet glass, is cured maintenance.With reference to the test carrying out cohesive strength under the status criteria state of JG/T3049-1998, carry out paint film water resistance test with reference under the state of GB/T1733-93, the cohesive force of coating reaches 2.4MPa, and water tolerance reaches 38 days.Use the 18W ultraviolet lamp that the main wave band of light source is 365nm, the sheet glass of film is positioned over the degradation experiment carrying out nitrogen peroxide in photochemical catalysis test box, in container, the starting point concentration of nitrogen peroxide is 9.3mg/m
3, detector continues the photodegradation situation detecting nitrogen dioxide gas, and in 100min, the degradation rate of nitrogen peroxide is 91%.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (4)
1. a hybrid inorganic-organic photocatalyst coating, it is characterized in that, it comprises the raw material of following massfraction: nano titanium oxide 2% ~ 6%, potash water glass solution 15% ~ 30%, white carbon black 25% ~ 35%, glycolic acid aqueous solution 5% ~ 21%, organosilicon crylic acid latex 1.5% ~ 5%, surplus are water, wherein, the massfraction of described potash water glass solution is 50% ~ 80%, and the massfraction of described glycolic acid aqueous solution is 15% ~ 25%.
2. hybrid inorganic-organic photocatalyst coating according to claim 1, it is characterized in that, it comprises the raw material of following massfraction: nano titanium oxide 3.5% ~ 5%, potash water glass solution 20% ~ 25%, white carbon black 28% ~ 30%, glycolic acid aqueous solution 10% ~ 16%, organosilicon crylic acid latex 2.5% ~ 4%, surplus are water.
3. hybrid inorganic-organic photocatalyst coating according to claim 1 and 2, is characterized in that, the primary particle size of described nano titanium oxide is 30 ~ 80nm.
4. a preparation method for hybrid inorganic-organic photocatalyst coating, comprises the following steps:
Wherein each raw material is taken according to the massfraction of the raw material described in claim 1 or 2;
Glycolic acid aqueous solution is added drop-wise in described potash water glass solution, forms the first mixed solution;
Nano titanium oxide and described white carbon black are added in described first mixed solution, and stirs, form the second mixed solution;
Described second mixed solution is joined in organosilicon crylic acid latex, finally adds water, after being uniformly dispersed, namely obtain described hybrid inorganic-organic photocatalyst coating.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112280347A (en) * | 2020-11-20 | 2021-01-29 | 深圳市邦士富科技有限公司 | Long-acting rainwater-penetration-resistant lotus leaf effect inorganic coating |
| CN114769099A (en) * | 2022-05-24 | 2022-07-22 | 浙江顺风鸟实业有限公司 | Pretreatment process for color separation electroplating of clothing accessories |
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| KR101025519B1 (en) * | 2010-08-02 | 2011-04-04 | 주식회사 코켐스 | Functional ceramic paint compositions |
| CN102796407A (en) * | 2011-05-23 | 2012-11-28 | 河源海川科技有限公司 | Organic-inorganic hybrid photocatalytic coating and preparation method thereof |
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Cited By (2)
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| CN112280347A (en) * | 2020-11-20 | 2021-01-29 | 深圳市邦士富科技有限公司 | Long-acting rainwater-penetration-resistant lotus leaf effect inorganic coating |
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Application publication date: 20160330 |