CN107418258A - A kind of visible light-responded photocatalyst normal temperature ceramic coating and preparation method - Google Patents
A kind of visible light-responded photocatalyst normal temperature ceramic coating and preparation method Download PDFInfo
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- CN107418258A CN107418258A CN201610339953.XA CN201610339953A CN107418258A CN 107418258 A CN107418258 A CN 107418258A CN 201610339953 A CN201610339953 A CN 201610339953A CN 107418258 A CN107418258 A CN 107418258A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/45—Gas separation or purification devices adapted for specific applications
- B01D2259/4508—Gas separation or purification devices adapted for specific applications for cleaning air in buildings
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Abstract
A kind of visible light-responded photocatalyst normal temperature ceramic coating and preparation method, how solve makes titanium dioxide preferably be attached on metope, and how to improve the technical problem of air purification effect of the titanium dioxide indoors under natural light.Using by dihydric phosphate and the inorganic polymer composite flocculant principle of metal oxide or metal hydroxides in aqueous medium, form crystalline ceramic structure coating, retarder is added on two kinds of component bases, added when applying a certain amount of water it is well mixed after, its normal temperature cure time can effectively be controlled, its film forming matter as photocatalyst, because itself is free of organic principle, it will not be decomposed under the catalytic action of photocatalyst, Production equipment and technique are simple, production cost is low, and product is nonpoisonous and tasteless, safety and environmental protection；Use metal ion carried titanium dioxide simultaneously, it is possible to achieve under visible ray efficiently, enduringly purify air, the thorough elimination pernicious gas such as indoor formaldehyde.
Description
Technical field
The present invention relates to a kind of building coating, belongs to chemical industry and paint field, particularly a kind of visible light-responded photocatalyst normal temperature ceramic coating and preparation method.
Background technology
Nowadays, health problem caused by room air pollution starts by common concern.Indoor air pollutants mainly include formaldehyde, benzene,toluene,xylene, VOC（VOC）, ammonia, be mostly derived from artificial board, emulsion paint, wallpaper, adhesive that interior decoration uses etc..Data are shown, formaldehyde, VOC, benzene pollution problem be present in the new decorating house that each main cities in China have more than 60%, especially formaldehyde is serious, and formaldehyde is internationally recognized strong carcinogen, a variety of diseases such as chronic respiratory disease, nasopharyngeal carcinoma, colon cancer, brain tumor, neonatal chromosome disorder, leukaemia can be caused.Therefore, room air pollution is eliminated, the environment that purifies the air of a room turns into the task of top priority.
In recent years, in the market photo-catalytic coating is emerged in multitude, and indoor organic pollutant is degraded into carbon dioxide and water by the catalytic action of titanium dioxide, so as to reach the purpose to purify the air of a room.But in the prior art, indoor coating is mostly organic coating, the performance that photocatalyst material is combined with organic coating requires study.Photo-catalytic coating generally has decomposition in the presence of visible light catalytic using organic emulsion as the film forming matter of coating, photocatalyst material to organic solvent at present, may weaken the function of organic coating；Meanwhile organic coating can increase room air pollution in itself, it is unfavorable for the requirement of indoor air purification.
Therefore how to solve photocatalyst material itself environmental protection, and how to increase the stability of adhesive in coating and simplify preparation technology and construction technology, turn into one of main bottleneck of constraint photo-catalytic coating application at present.
The content of the invention
How the present invention solves photocatalyst material itself environmental protection for solution, and how to increase the stability of adhesive and the technical problem of simplified preparation technology and construction technology in coating, there is provided a kind of visible light-responded photocatalyst normal temperature ceramic coating and preparation method.Using by dihydric phosphate and the inorganic polymer composite flocculant principle of metal oxide or metal hydroxides in aqueous medium, form crystalline ceramic structure coating, retarder is added on two kinds of component bases, added when applying a certain amount of water it is well mixed after, its normal temperature cure time can effectively be controlled, its film forming matter as photocatalyst, because itself is free of organic principle, it will not be decomposed under the catalytic action of photocatalyst, Production equipment and technique are simple, production cost is low, and product is nonpoisonous and tasteless, safety and environmental protection；Use metal ion carried titanium dioxide simultaneously, it is possible to achieve under visible ray efficiently, enduringly purify air, thoroughly elimination indoor formaldehyde, benzene,toluene,xylene, VOC, the pernicious gas such as ammonia.
The technical solution adopted by the present invention is for achieving the above object：
Coating is made with water hybrid reaction in a kind of visible light-responded photocatalyst normal temperature ceramic coating composition, the coating composition, it is important to：In the coating composition each constituent count in parts by weight including：0.01 ~ 1 part of metal ion carried titanium dioxide, 0.1 ~ 2 part of nano silicon, 0.5 ~ 5 part of silica gel, 20 ~ 50 parts of alkaline metal oxide or and metal hydroxides, 20 ~ 40 parts of dihydric phosphate, 2 ~ 10 parts of retarder.
The metal oxide includes：Magnesia or/and calcium oxide or/and iron oxide or/and aluminum oxide.
The metal hydroxides includes：Magnesium hydroxide or/and calcium hydroxide or/and sodium hydroxide.
The dihydric phosphate includes：Aluminium dihydrogen phosphate or/and potassium dihydrogen phosphate or/and sodium dihydrogen phosphate.
The retarder includes：NaCl or/and borax.
The metal ion carried titanium dioxide is one or more combinations in silver ion carried titanium dioxide, gold ion carried titanium dioxide, platinum ion carried titanium dioxide, palladium ion carried titanium dioxide, copper ion carried titanium dioxide, iron ion carried titanium dioxide.
The preferred number of the dihydric phosphate is 25-35.
The preferred number of the retarder is 5-8.
The preferred number of the nano silicon is 0.5-1.2.
The preferred number of the silica gel is 2-4.
A kind of preparation method of visible light-responded photocatalyst normal temperature ceramic coating, it is important to：The preparation method comprises the following steps：
A, will 0.01 ~ 1 part of metal ion carried titanium dioxide by weight, 0.1 ~ 2 part of nano silicon, 0.5 ~ 5 part of silica gel, 20 ~ 50 parts of alkaline metal oxide or and metal hydroxides, 20 ~ 40 parts of dihydric phosphate, 2 ~ 10 parts of retarder are well mixed；
B, the water that 25-45 parts are added in said mixture material is well mixed, that is, obtains the ceramic coating of normal temperature cure.
Coating made from the above method is sprayed at indoor wall surface according to 100-300g/m2, you can high-efficient and lasting plays a role, and improves indoor air environment.
The design difficulty of the present invention is the research of inorganic adhesive：At normal temperatures, when being reacted using the dihydric phosphate described in the present invention and metal oxide or metal hydroxides in water, its reaction speed is very fast, in specific application, also has little time coating and has been cured.Therefore, in most research before this, curing agent reactivity once was reduced to extend its hardening time by the means of high-temperature calcination, but uses high-temperature calcination technique and its complexity, and the cost that consumes energy is high.In research repeatedly, after adding delayer, such as NaCl or borax, its reaction speed can effectively substantially be controlled according to the addition of dosage.
The technique by phosphoric acid salt adhesive of the invention innovative is simplified, and without special curing agent, need to will only add water in powder body material, i.e. curable under normal temperature.And in the present invention, the retarder is capable of the hardening time of simple and effective control adhesive, makes the use of adhesive more suitable for diversified forms such as Air spraying, airless spraying, brushing, blade coating, roller coat.Further, since the present invention is free of any organic substance, normal temperature ceramics permanent not aging, the non-foaming, excellent in weather being formed by curing, service life length, are real water-based, purely inorganic, green products.
The beneficial effects of the present invention are：The present invention uses metal ion carried titanium dioxide, can realize degradable organic pollutant quick, efficient, lasting under visible ray；Acted on by the efficient absorption of silica gel, indoor organic pollutant is adsorbed onto surface of wall, concentrates degraded, accelerates air purification efficiency；Without any organic principle in formula, avoid coating and decomposed in itself under the catalytic action of photocatalyst；Production equipment and technique are simple, and production cost is low, safety and environmental protection.
The present invention uses photocatalyst ion doping and load technology, realizes the important breakthrough of efficient degradation pernicious gas under visible ray, and combines high activity adsorbent, using normal temperature ceramics as carrier, indoor harmful gas is concentrated and is adsorbed onto surface of wall, rapid degraded.
Embodiment
A kind of visible light-responded photocatalyst normal temperature ceramic coating is made up of two kinds of components of powder A and water B in the present invention, and normal temperature is curable, and delays hardening time to 120min by the addition of delayer, and hardness is not less than 9H.Wherein described component A count in parts by weight including：0.01 ~ 1 part of metal ion carried titanium dioxide, 0.1 ~ 2 part of nano silicon, 0.5 ~ 5 part of silica gel, 20 ~ 50 parts of alkaline metal oxide or and metal hydroxides, 20 ~ 40 parts of dihydric phosphate, 2 ~ 10 parts of retarder；The B component includes：20~40 parts of water.
The metal oxide includes：Magnesia or/and calcium oxide or/and iron oxide.
The metal hydroxides includes：Magnesium hydroxide or/and calcium hydroxide or/and sodium hydroxide.
The dihydric phosphate includes：Aluminium dihydrogen phosphate or/and potassium dihydrogen phosphate or/and sodium dihydrogen phosphate.
The retarder includes：NaCl or/and borax.
A kind of preparation method of visible light-responded photocatalyst normal temperature ceramic coating, it is important to：The preparation method comprises the following steps：
A, will 0.01 ~ 1 part of metal ion carried titanium dioxide by weight, 0.1 ~ 2 part of nano silicon, 0.5 ~ 5 part of silica gel, 20 ~ 50 parts of alkaline metal oxide or and metal hydroxides, 20 ~ 40 parts of dihydric phosphate, 2 ~ 10 parts of retarder are well mixed；
B, the water that 25-45 parts are added in said mixture material is uniformly mixed, that is, obtains the visible light-responded photocatalyst ceramic coating of normal temperature cure.
Coating made from the above method is sprayed at indoor wall surface according to 100-300g/m2, you can high-efficient and lasting plays a role, and improves indoor air environment.
In the present invention, the retarder can effectively extend the hardening time of coating, make the use of coating more suitable for diversified forms such as Air spraying, airless spraying, brushing, blade coating, roller coat.
Present invention also offers the preparation method of visible light-responded photocatalyst normal temperature ceramic coating described in above-mentioned technical proposal, comprise the following steps：
1. metal ion carried titanium dioxide, nano silicon, silica gel, alkaline metal oxide or/and metal hydroxides, dihydric phosphate, retarder are well mixed, component A is obtained, is fetched water as B component；
2. component A and B component are mixed, that is, obtain the visible light-responded photocatalyst ceramic coating of normal temperature cure.
Above-mentioned preparation method is specifically described as follows：
1. by 0.01 ~ 1 part of metal ion carried titanium dioxide, 0.1 ~ 2 part of nano silicon, 0.5 ~ 5 part of silica gel, 20 ~ 50 parts of alkaline metal oxide or and metal hydroxides, 20 ~ 40 parts of dihydric phosphate, the well mixed obtained powder A of 2 ~ 10 parts of retarder, takes 60 parts~100 parts of water as component B；
2. at room temperature mixing A, B component, stirring, originally there is endothermic thermal event, continue to stir, about 10-20min（It is relevant with the specific ratio of each component）Afterwards, there is preliminary exothermic phenomenon, about 30 DEG C~40 DEG C of temperature, continue to stir 10-20min（It is relevant with the specific ratio of each component）To room temperature, 10-100min（It is relevant with the specific ratio of each component）Adhesive starts gradually to generate heat afterwards, solidification, 80 DEG C of temperature ＞, hardness >=9H after solidification.
It is as follows that preparation method is specifically described with the embodiment of a concrete component content：
1 is well mixed 0.5 part of metal ion carried titanium dioxide, 1 part of nano silicon, 3 parts of silica gel, 40 parts of alkaline metal oxide, 30 parts of dihydric phosphate, 6 parts of retarder, and the total component A of powder is made, takes 80 parts of water as component B；
2. at room temperature mixing A, B component, stirring, originally there is endothermic thermal event, continue to stir, after about 15min, there is preliminary exothermic phenomenon, about 30 DEG C~40 DEG C of temperature, continue to stir 15min to room temperature, start gradually heating after 90min, solidification, 82 DEG C of temperature, hardness is 9H after solidification.
Specific embodiment is provided below according to the component of coating, further illustrates the technique effect of the present invention.Specific embodiment such as table 1 below：
Table 1：
Claims (10)
1. a kind of visible light-responded photocatalyst normal temperature ceramic coating composition, coating is made with water hybrid reaction in the coating composition, it is characterised in that：In the coating composition each constituent count in parts by weight including：0.01 ~ 1 part of metal ion carried titanium dioxide, 0.1 ~ 2 part of nano silicon, 0.5 ~ 5 part of silica gel, 20 ~ 50 parts of alkaline metal oxide or and metal hydroxides, 20 ~ 40 parts of dihydric phosphate, 2 ~ 10 parts of retarder.
A kind of 2. visible light-responded photocatalyst normal temperature ceramic coating according to claim 1, it is characterised in that：The metal oxide includes：Magnesia or/and calcium oxide or/and iron oxide or/and aluminum oxide.
A kind of 3. visible light-responded photocatalyst normal temperature ceramic coating according to claim 1, it is characterised in that：The metal hydroxides includes：Magnesium hydroxide or/and calcium hydroxide or/and sodium hydroxide.
A kind of 4. visible light-responded photocatalyst normal temperature ceramic coating according to claim 1, it is characterised in that：The dihydric phosphate includes：Aluminium dihydrogen phosphate or/and potassium dihydrogen phosphate or/and sodium dihydrogen phosphate.
A kind of 5. visible light-responded photocatalyst normal temperature ceramic coating according to claim 1, it is characterised in that：The retarder includes：NaCl or/and borax.
A kind of 6. visible light-responded photocatalyst normal temperature ceramic coating according to claim 1, it is characterised in that：The metal ion carried titanium dioxide is one or more combinations in silver ion carried titanium dioxide, gold ion carried titanium dioxide, platinum ion carried titanium dioxide, palladium ion carried titanium dioxide, copper ion carried titanium dioxide, iron ion carried titanium dioxide.
A kind of 7. visible light-responded photocatalyst normal temperature ceramic coating according to claim 1, it is characterised in that：The preferred number of the dihydric phosphate is 25-35.
A kind of 8. normal temperature cure aquation Adhesive composition based on inorganic phosphate according to claim 1 or 7, it is characterised in that：The preferred number of the retarder is 5-8.
A kind of 9. normal temperature cure aquation Adhesive composition based on inorganic phosphate according to claim 1 or 7, it is characterised in that：The preferred number of the nano silicon is 0.5-1.2.
A kind of 10. preparation method of visible light-responded photocatalyst normal temperature ceramic coating, it is characterised in that：The preparation method comprises the following steps：
A, will 0.01 ~ 1 part of metal ion carried titanium dioxide by weight, 0.1 ~ 2 part of nano silicon, 0.5 ~ 5 part of silica gel, 20 ~ 50 parts of alkaline metal oxide or and metal hydroxides, 20 ~ 40 parts of dihydric phosphate, 2 ~ 10 parts of retarder are well mixed；
B, the water that 25-45 parts are added in said mixture material is well mixed, that is, obtains the visible light-responded photocatalyst ceramic coating of normal temperature cure.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108264849A (en) * | 2018-01-26 | 2018-07-10 | 佛山市邦韵建材有限公司 | A kind of coating of decomposing formaldehyde release anion |
| CN109174160A (en) * | 2018-10-12 | 2019-01-11 | 辽宁大学 | A kind of g-C3N4Photocatalytic coating and its preparation method and application |
| CN112403176A (en) * | 2020-11-11 | 2021-02-26 | 临沂京瑞新材料科技有限公司 | Aqueous deodorant |
| CN113509903A (en) * | 2020-04-09 | 2021-10-19 | 石河子大学 | Photostimulation response type material and preparation method and application thereof |
| CN115028198A (en) * | 2022-06-14 | 2022-09-09 | 安徽迪诺环保新材料科技有限公司 | Production method of titanium dioxide and photocatalytic self-cleaning ceramic |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108264849A (en) * | 2018-01-26 | 2018-07-10 | 佛山市邦韵建材有限公司 | A kind of coating of decomposing formaldehyde release anion |
| CN109174160A (en) * | 2018-10-12 | 2019-01-11 | 辽宁大学 | A kind of g-C3N4Photocatalytic coating and its preparation method and application |
| CN109174160B (en) * | 2018-10-12 | 2021-11-30 | 辽宁大学 | g-C3N4Photocatalyst coating and preparation method and application thereof |
| CN113509903A (en) * | 2020-04-09 | 2021-10-19 | 石河子大学 | Photostimulation response type material and preparation method and application thereof |
| CN113509903B (en) * | 2020-04-09 | 2022-06-28 | 石河子大学 | Photostimulation response type material and preparation method and application thereof |
| CN112403176A (en) * | 2020-11-11 | 2021-02-26 | 临沂京瑞新材料科技有限公司 | Aqueous deodorant |
| CN115028198A (en) * | 2022-06-14 | 2022-09-09 | 安徽迪诺环保新材料科技有限公司 | Production method of titanium dioxide and photocatalytic self-cleaning ceramic |
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Application publication date: 20171201 |