CN104046115A - Titanium dioxide spherical composite oxide and preparation method thereof - Google Patents
Titanium dioxide spherical composite oxide and preparation method thereof Download PDFInfo
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- CN104046115A CN104046115A CN201310078867.4A CN201310078867A CN104046115A CN 104046115 A CN104046115 A CN 104046115A CN 201310078867 A CN201310078867 A CN 201310078867A CN 104046115 A CN104046115 A CN 104046115A
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- titanium dioxide
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Abstract
The invention discloses a titanium dioxide spherical composite oxide and a preparation method thereof, and the titanium dioxide spherical composite oxide contains the following components by mass: 1-50% of silica; and 50-99% of titanium dioxide; the titanium dioxide spherical composite oxide particle size is 0.5-10 micron. The titanium dioxide spherical composite oxide is large in particle size, high in flowability and high in filling rate and photocatalyst effect.
Description
Technical field
The invention belongs to coatings industry field, specifically, relate to spherical composite oxides of a kind of titanium dioxide and preparation method thereof.
Background technology
Titanium dioxide, chemical formula is TiO
2, be commonly called as titanium dioxide, be used for photocatalyst, makeup etc.Titanium dioxide can be decomposed and extract with acid by rutile, or is decomposed and obtained by titanium tetrachloride.Titanium dioxide stable in properties, a large amount of have good covering power and good infrared reflection ability as the white pigment in paint, similar with white lead, but unlike white lead meeting blackening, have again the persistence the same with zinc white, and can reduce energy consumption.Yet, in the practical application of titanium dioxide, when particularly the titanium dioxide of large particle diameter (diameter is greater than 1 micron) is applied to coatings industry, there is following problem: (1) crystal shape right and wrong are spherical, be unfavorable for high filling; (2) be difficult for carrying out silane coupling agent processing; (3) crystal formation difficulty; (4) cost is high.
Summary of the invention
The object of the invention is to solve the defect of above-mentioned prior art, spherical composite oxides of a kind of titanium dioxide and preparation method thereof are provided.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
The spherical composite oxides of titanium dioxide, comprise the following component in massfraction:
Silica 1-50%;
Titanium dioxide 50-99%;
The particle diameter of the spherical composite oxides of described titanium dioxide is 0.5-10 micron.
According to the present invention, the median size of described silicon-dioxide is 0.005-0.1 micron.
According to the present invention, the median size of described titanium dioxide is 0.01-5 micron.
A coating, comprises the spherical composite oxides of titanium dioxide as above.
The preparation method of the spherical composite oxides of titanium dioxide as above, is characterized in that, comprises following steps:
A) titania powder and water are mixed, add silicon sol to mix, obtain mixture;
B) said mixture is dry;
C) dried mixture is ground into particulate matter with disintegrating apparatus;
D) particulate matter obtaining after pulverizing is carried out to spheroidization processing with flame equipment heating, obtain the spherical composite oxides of titanium dioxide.
According to the present invention, it is characterized in that, in described silicon sol, the mass content of silicon-dioxide is 1 to 50%.
According to the present invention, be describedly dried, tray dried dry for spraying, continuous type furnace is dry or continuous tunnel furnace drying means in one or more.
According to the present invention, described disintegrating apparatus is one or more in ball mill, Universalpulverizer or air-flow grinding machine.
According to the present invention, it is characterized in that, described flame equipment is concentric triple tubular type flame burner.
Beneficial effect of the present invention:
1, the spherical composite oxides particle diameter of titanium dioxide is larger, and energy usable reflection infrared rays, reduces the room temp of building.
2, the spherical composite oxides of titanium dioxide are spherical, have high workability, and high fill-ratio makes its appended body surface form the protective layer of the smooth densification of one deck.
3, there is photocatalyst effect, effective self-cleaning surface dirt under the effect of water, effectively toxic and harmful and organism in decomposition chamber under the effect of light, as formaldehyde etc.
Embodiment
Below, by specific embodiment, the present invention is described in further details.Should be understood that following examples are only for the present invention is described but not for limiting scope of the present invention.
In following examples, except indicating especially, raw materials used all commercially available obtaining, % represents weight percent.
embodiment 1-5, the spherical composite oxides of titanium dioxide preparation
Condition as shown in Table 1 and Table 2, according to following method, prepare the spherical composite oxides of titanium dioxide:
After titania powder and water are mixed, then silicon sol is added and stirred, obtain mixture; Then said mixture is dried; Dried mixture is ground into particulate matter with disintegrating apparatus; The particulate matter obtaining after pulverizing is carried out to spheroidization processing with flame equipment heating, obtain the spherical composite oxides of titanium dioxide.
Component and proportioning prepared by table 1, the spherical composite oxides of titanium dioxide
Condition prepared by table 2, the spherical composite oxides of titanium dioxide
embodiment 6-10, the spherical composite oxides of titanium dioxide detection
The spherical composite oxides of titanium dioxide prepared by embodiment 1-5 carry out parameter detecting, use electron microscopy observation shape and crystal boundary, measure median size, and measure reflectivity with integrating sphere diffused reflection instrument, in contrast with titanium dioxide, result as shown in Table 3 and Table 4 simultaneously.
Parameter detecting prepared by table 3, the spherical composite oxides of titanium dioxide
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Shape | Spherical | Spherical | Spherical | Spherical | Spherical |
| Crystal boundary | Can see by trace | Can see by trace | Can see by trace | Can see by trace | Can see by trace |
| Median size (micron) | 1.7 | 1.7 | 1.7 | 1 | 5 |
Reflectivity prepared by table 4, the spherical composite oxides of titanium dioxide detects
From above result, the spherical composite oxides of titanium dioxide prepared by the present invention are spherical, and particle diameter is larger, are controlled in the scope of 0.5-10 micron, when the particle diameter of the spherical composite oxides of titanium dioxide is difficult to obtain spherical powder during lower than 0.5 micron, while being greater than 10 microns, be not suitable for adding coating.The spherical composite oxides of titanium dioxide prepared by the present invention have high workability; high fill-ratio; reflectivity compared with titanium dioxide increases substantially, and can make its appended body surface form the protective layer of the smooth densification of one deck, and be applied to the solar heat radiative material of building field.
Claims (9)
1. the spherical composite oxides of titanium dioxide, is characterized in that, comprise the following component in massfraction:
Silica 1-50%;
Titanium dioxide 50-99%;
The particle diameter of the spherical composite oxides of described titanium dioxide is 0.5-10 micron.
2. the spherical composite oxides of titanium dioxide as claimed in claim 1, is characterized in that, the median size of described silicon-dioxide is 0.005-0.1 micron.
3. the spherical composite oxides of titanium dioxide as claimed in claim 1, is characterized in that,, the median size of described titanium dioxide is 0.01-5 micron.
4. a coating, is characterized in that, comprises the spherical composite oxides of titanium dioxide as described in any one in claim 1-3.
5. the preparation method of the spherical composite oxides of titanium dioxide as described in any one in claim 1-3, is characterized in that, comprises following steps:
A) titania powder and water are mixed, add silicon sol to mix, obtain mixture;
B) said mixture is dry;
C) dried mixture is ground into particulate matter with disintegrating apparatus;
D) particulate matter obtaining after pulverizing is carried out to spheroidization processing with flame equipment heating, obtain the spherical composite oxides of titanium dioxide.
6. the preparation method of the spherical composite oxides of titanium dioxide according to claim 5, is characterized in that, in described silicon sol, the mass content of silicon-dioxide is 1 to 50%.
7. the preparation method of the spherical composite oxides of titanium dioxide according to claim 5, is characterized in that, be describedly dried, tray dried dry for spraying, continuous type furnace is dry or continuous tunnel furnace drying means in one or more.
8. the preparation method of the spherical composite oxides of titanium dioxide according to claim 5, is characterized in that, described disintegrating apparatus is one or more in ball mill, Universalpulverizer or air-flow grinding machine.
9. the preparation method of the spherical composite oxides of titanium dioxide according to claim 5, is characterized in that, described flame equipment is concentric triple tubular type flame burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310078867.4A CN104046115A (en) | 2013-03-12 | 2013-03-12 | Titanium dioxide spherical composite oxide and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310078867.4A CN104046115A (en) | 2013-03-12 | 2013-03-12 | Titanium dioxide spherical composite oxide and preparation method thereof |
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| CN104046115A true CN104046115A (en) | 2014-09-17 |
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| CN201310078867.4A Pending CN104046115A (en) | 2013-03-12 | 2013-03-12 | Titanium dioxide spherical composite oxide and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105062149A (en) * | 2015-07-20 | 2015-11-18 | 苏州宇希新材料科技有限公司 | Method for modifying nano-titanium dioxide |
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2013
- 2013-03-12 CN CN201310078867.4A patent/CN104046115A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105062149A (en) * | 2015-07-20 | 2015-11-18 | 苏州宇希新材料科技有限公司 | Method for modifying nano-titanium dioxide |
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Application publication date: 20140917 |