CN102443291A - Nanometer titanium dioxide (TiO2)-stannic oxide (SnO2) compound sol, coating and preparation method thereof - Google Patents
Nanometer titanium dioxide (TiO2)-stannic oxide (SnO2) compound sol, coating and preparation method thereof Download PDFInfo
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- CN102443291A CN102443291A CN2011104072378A CN201110407237A CN102443291A CN 102443291 A CN102443291 A CN 102443291A CN 2011104072378 A CN2011104072378 A CN 2011104072378A CN 201110407237 A CN201110407237 A CN 201110407237A CN 102443291 A CN102443291 A CN 102443291A
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Abstract
The invention discloses nanometer titanium dioxide (TiO2)-stannic oxide (SnO2) compound sol, a coating and a preparation method thereof. The preparation method of the nanometer sol comprises the following steps that: the nanometer TiO2 sol and the SnO2 sol are respectively prepared, and the TiO2 sol and the SnO2 sol are mixed at the mixing volume ratio of 1:1-1:3. The sol can be coated and brushed onto a substrate, after the materials are heated to 150 to 300 DEG C, the heat insulation is carried out for 10 minutes to 1 hour, the obtained coating has good bonding force on the substrate, and the coating can give good corrosion resistance performance to the surface of the substrate.
Description
Technical field
The invention belongs to function composite coating material technical field, relate to the colloidal sol preparation technology of nano-composite coating, relate in particular to a kind of solidity to corrosion nano SnO
2-TiO
2The preparation technology of compound coating.
Background technology
Burn into takes place and scratches or the weathering equivalent damage in the surface of metal, glass or plastics easily.One of method of protecting these materials is exactly to adopt paint coatings.
Because the nano functional coating has excellent properties such as optics, electricity, magnetics, receives much concern.TiO
2The source is abundant, and output is big, and is nontoxic, and chemical property is stable, can be used as photocatalytic coating and is used for photodissociation water and photodegradation organism.SnO
2Also can be used as a kind of functional coat, wet quick in air-sensitive, aspect extensive application such as optical technology.Nanometer, compoundization and dopingization are to improve the important channel that is coated with layer function.
Common nano paint is in vanish system, to add nanometer powder at present; Because the organic constituent of the inorganic nature of nanometer powder and vanish system does not often match; Cause the part of nanoparticle in coating to reunite easily, this inhomogeneous dispersive nanoparticle not only can not make its good function in coating, embody; After can causing coating to be coated in material surface on the contrary, defective such as coating cracking occurs, peel off.
Chinese patent CN200610083724.2 discloses a kind of antiseized nano paint preparation method of resistant who is used for building surface, is earlier nanoparticle to be disperseed, and then joins in the organic coating system and go.Sol-gel method is the coating production that grows up the sixties in 20th century; This patent utilizes this method to prepare nano coating; Its basic step be earlier with metal inorganic salt or organometallic compound at low temperatures liquid phase synthesize colloidal sol; Adopt brush, spray or dip coating to make solution absorbs on base material then, after gel, become the gel nanocrystalline coating.Because the presoma of colloidal sol can be purified and sol-gel process liquid phase film forming at normal temperatures, equipment is simple, and is easy to operate.
Summary of the invention
The objective of the invention is in order to overcome the deficiency that complex sol prepares prior art, a kind of with low cost, nano-TiO that technology is easy is provided
2-SnO
2Complex sol and preparation technology of coating thereof.
Goal of the invention of the present invention realizes through following technical scheme:
Nano-TiO
2-SnO
2The preparation technology of complex sol, concrete steps comprise: TiO 2 sol and tindioxide colloidal sol are mixed, and its mixed volume ratio is 1: 1～1: 3.
The preparation method comprises: titaniferous organic cpds is dissolved in the absolute ethyl alcohol, adds methyl ethyl diketone as suppressor factor, splash into hydrochloric acid and alcoholic acid mixed solution under stirring, 85～95 ℃ were heated 2～8 hours.In the reaction system, titanate ester compound volume content is 3%～25%, the methyl ethyl diketone volume content is 1%～2%; Content of hydrochloric acid is 0.04～0.15mol/L.
In the described tindioxide colloidal sol, the preparation method comprises: tin tetrachloride is dissolved in separates in the mixture of second alcohol and water, add cetyl trimethylammonium bromide as dispersion agent, stirred ultrasonic 10～50 minutes 3～10 hours.In the tindioxide colloidal sol, cetyl trimethylammonium bromide content is 0.005～0.02g/ml.
The resulting nano-TiO of aforesaid method
2-SnO
2Complex sol, wherein TiO
2, SnO
2Particle diameter be Nano grade.
This colloidal sol can be used for preparing nano-TiO
2-SnO
2Compound coating: with nano-TiO
2-SnO
2The complex sol brushing is on base material, heats up with 0.5～3 ℃/min speed in dry back, be heated to 150～300 ℃ after insulation 10 minutes～1 hour, the oven dry of cooling after scouring.Base material is pottery, glass or metal.
The present invention prepares nano-TiO respectively
2And SnO
2Colloidal sol mixes then by a certain percentage, through the homodisperse vitreosol of Prepared by Sol Gel Method, is a kind of complex sol; Coatings prepared has good bonding force to base material, can give substrate surface superior corrosion resistance ability.
Embodiment
How further specify the present invention below in conjunction with concrete embodiment realizes:
Embodiment 1
A, join glue
(1) preparation of TiO 2 sol
The employing tetrabutyl titanate is a raw material; Get tetrabutyl titanate 5ml, be dissolved in the 95ml absolute ethyl alcohol, add methyl ethyl diketone 1.5ml as suppressor factor; Then under violent stirring; The mixed solution that splashes into 10mol/L hydrochloric acid 1.5ml and absolute ethyl alcohol 7ml in solution, 90 ℃ of thermostatically heating 3 hours, the room temperature cooling promptly obtains stable TiO 2 sol;
(2) preparation of tindioxide colloidal sol
Adopting stannic chloride pentahydrate 40g is raw material, is dissolved among the absolute ethyl alcohol 90ml, adds the 10ml deionized water; Add the 1g cetyl trimethylammonium bromide then and do dispersion agent; The room temperature lower magnetic force stirred 5 hours, again solution was placed the ultrasonic unit sonic oscillation 20 minutes, got tindioxide colloidal sol;
B, mixed glue
Above-mentioned TiO 2 sol and tindioxide colloidal sol are promptly got complex sol by volume ratio mixing in 1: 1.Titanium oxide and stannic oxide particle are nano level in the complex sol.
C, preparation coating
With No. 45 steel polishings, cleaning, oven dry.Adopt the brushing mode to be applied to base material above-mentioned complex sol.Room temperature was placed after 24 hours, inserted in the retort furnace and heated with stove, and rate of heating is 1.5 ℃/min; Be heated to behind 150 ℃ of the preset temperatures insulation 0.5 hour; Close stove then, cool to room temperature with the furnace, from retort furnace, take out with distilled water flushing clean back oven dry and promptly make compound coating of the present invention.
Embodiment 2
A, join glue
(1) preparation of TiO 2 sol
Adopting the tetrabutyl titanate organic cpds is raw material; Get tetrabutyl titanate 20ml, be dissolved in the 80ml absolute ethyl alcohol, add methyl ethyl diketone 2ml as suppressor factor; Then under violent stirring; The mixed solution that splashes into 10mol/L hydrochloric acid 0.5ml and absolute ethyl alcohol 7.5ml in solution, 85 ℃ of thermostatically heating 7 hours, the room temperature cooling promptly obtains stable TiO 2 sol;
(2) preparation of tindioxide colloidal sol
Adopting anhydrous stannic chloride 50g is raw material, is dissolved among the absolute ethyl alcohol 90ml, adds the 10ml deionized water; Add the 1g cetyl trimethylammonium bromide then and do dispersion agent; The room temperature lower magnetic force stirred 9 hours, again solution was placed the ultrasonic unit sonic oscillation 40 minutes, got tindioxide colloidal sol; B, mixed glue
Above-mentioned TiO 2 sol and tindioxide colloidal sol are promptly got complex sol by volume ratio mixing in 3: 1.Titanium oxide and stannic oxide particle are nano level in the complex sol.
C, preparation coating
With the polishing of 304 stainless steels, cleaning, oven dry.Above-mentioned complex sol is adopted brush, means such as sprays or soak and be applied to base material.Room temperature was placed after 24 hours, inserted in the retort furnace and heated with stove, and rate of heating is 1.5 ℃/min; Be heated to behind 250 ℃ of the preset temperatures insulation 0.5 hour; Close stove then, cool to room temperature with the furnace, from retort furnace, take out with distilled water flushing clean back oven dry and promptly make compound coating of the present invention.
Embodiment 1 and 2 coating sample adopt the strok method test, and the bonding force of coating and base material is 0 grade.
Embodiment 1 and 2 coating sample did not have corrosion in 150 hours through neutral salt spray corrosion test to be changed.
Claims (6)
1. nano-TiO
2-SnO
2The preparation method of complex sol is characterized in that, may further comprise the steps: TiO 2 sol and tindioxide colloidal sol are mixed, and its mixed volume ratio is 1: 1～1: 3;
The preparation method of said TiO 2 sol comprises: titaniferous organic cpds is dissolved in the absolute ethyl alcohol, adds methyl ethyl diketone, splash into hydrochloric acid and alcoholic acid mixed solution under stirring, 85～95 ℃ were heated 2～8 hours;
The preparation method of said tindioxide colloidal sol comprises: tin chloride is dissolved in separates in the mixture of second alcohol and water; Add cetyl trimethylammonium bromide as dispersion agent; Stirred 3～10 hours, ultrasonic 10～50 minutes, wherein the content of tin was 1～1.6mol/L.
2. the said nano-TiO of claim 1
2-SnO
2The preparation method of complex sol is characterized in that, said titaniferous organic cpds is the titanate ester compound, and among the preparation method of TiO 2 sol, titanate ester compound volume content is 3%～25%, the methyl ethyl diketone volume content is 1%～2%; Content of hydrochloric acid is 0.04～0.15mol/L.
3. the said nano-TiO of claim 1
2-SnO
2The preparation method of complex sol is characterized in that, in the said tindioxide colloidal sol, cetyl trimethylammonium bromide content is 0.005～0.02g/ml.
4. nano-TiO
2-SnO
2Complex sol is characterized in that, through each described method preparation of claim 1～4.
5. nano-TiO
2-SnO
2The preparation method of compound coating is characterized in that, with the described nano-TiO of claim 4
2-SnO
2The complex sol brushing is on base material, heats up with 0.5～3 ℃/min speed in dry back, be heated to 150～300 ℃ after insulation 10 minutes～1 hour.
6. the said nano-TiO of claim 5
2-SnO
2The preparation method of compound coating is characterized in that, described base material is pottery, glass or metal.
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| CN2011104072378A CN102443291A (en) | 2011-12-08 | 2011-12-08 | Nanometer titanium dioxide (TiO2)-stannic oxide (SnO2) compound sol, coating and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301829A (en) * | 2013-05-28 | 2013-09-18 | 东莞上海大学纳米技术研究院 | Compound photocatalyst sol and preparation method thereof |
| CN107189618A (en) * | 2017-05-27 | 2017-09-22 | 太仓卡斯特姆新材料有限公司 | A kind of waterborne inorganic einc-rich primer and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1436590A (en) * | 2002-02-06 | 2003-08-20 | 云南大学 | Photocatalytic superhydrophilic composite titanium dioxide and tin dioxide film |
| CN101003420A (en) * | 2007-01-04 | 2007-07-25 | 上海工程技术大学 | Technique for preparing Nano Sn02/Ti02 composite film in use for photovoltaic conversion |
| CN101670284A (en) * | 2009-10-15 | 2010-03-17 | 哈尔滨工业大学 | Method of photocatalytic material of coating TiO2/SnO2 on surface of light-weight ceramic sand |
-
2011
- 2011-12-08 CN CN2011104072378A patent/CN102443291A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1436590A (en) * | 2002-02-06 | 2003-08-20 | 云南大学 | Photocatalytic superhydrophilic composite titanium dioxide and tin dioxide film |
| CN101003420A (en) * | 2007-01-04 | 2007-07-25 | 上海工程技术大学 | Technique for preparing Nano Sn02/Ti02 composite film in use for photovoltaic conversion |
| CN101670284A (en) * | 2009-10-15 | 2010-03-17 | 哈尔滨工业大学 | Method of photocatalytic material of coating TiO2/SnO2 on surface of light-weight ceramic sand |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301829A (en) * | 2013-05-28 | 2013-09-18 | 东莞上海大学纳米技术研究院 | Compound photocatalyst sol and preparation method thereof |
| CN103301829B (en) * | 2013-05-28 | 2015-07-22 | 东莞上海大学纳米技术研究院 | Compound photocatalyst sol and preparation method thereof |
| CN107189618A (en) * | 2017-05-27 | 2017-09-22 | 太仓卡斯特姆新材料有限公司 | A kind of waterborne inorganic einc-rich primer and preparation method thereof |
| WO2018218821A1 (en) * | 2017-05-27 | 2018-12-06 | 太仓卡斯特姆新材料有限公司 | Aqueous inorganic zinc-rich primer and preparation method therefor |
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Application publication date: 20120509 |