CN102993816A - 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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- CN102993816A CN102993816A CN2012104181257A CN201210418125A CN102993816A CN 102993816 A CN102993816 A CN 102993816A CN 2012104181257 A CN2012104181257 A CN 2012104181257A CN 201210418125 A CN201210418125 A CN 201210418125A CN 102993816 A CN102993816 A CN 102993816A
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Abstract
The invention discloses a titanium dioxide spherical composite oxide and a preparation method thereof. The preparation method comprises the following steps of: mixing titanium dioxide powder with water uniformly, then adding silica sol and mixing to obtain a mixture; drying the mixture; smashing the dried mixture into particles by using smashing equipment; and heating the smashed particles by using firing equipment to perform spheroidization to obtain the titanium dioxide spherical composite oxide. The invention also discloses the titanium dioxide spherical composite oxide which comprises the following ingredients in percentage by mass: 1 to 50 percent of silicon dioxide of which the average particle size is 0.005 to 0.1 micrometer, and 50 to 99 percent of titanium dioxide, wherein the average particle size and the particle size of the titanium dioxide spherical composite oxide are 0.01 to 5 micrometers and 0.5 to 10 micrometers respectively. The titanium dioxide spherical composite oxide has a photocatalyst effect and is high in filling rate and high in heat reflection.
Description
Technical field
The embodiment of the invention relates to a kind of paint additive, is specifically related to spherical composite oxides of a kind of titanium dioxide and preparation method thereof.
Background technology
Titanium dioxide is widely used at coatings industry because of its high permittivity and high refractive index.The titanium dioxide of large particle diameter (diameter is greater than 1 micron) has high infrared reflection ability, can be applicable to solar heat radiation reflection coating, fiber etc., can reduce the power consumption of air-conditioning, reduces energy consumption, and global environment is made contributions.But large particle diameter titanium oxide has following problem: crystal growth is difficult on the industrial production, cost is high; The crystal shape right and wrong are spherical, be unfavorable for high filling; Certain photocatalyst effect is arranged, the organism in the coating is had Decomposition; Being difficult for carrying out silane coupling agent processes.
Summary of the invention
The object of the invention is to solve the defective of above-mentioned prior art, spherical composite oxides of titanium dioxide of a kind of high fill-ratio with photocatalyst effect and preparation method thereof are provided.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
The preparation method of the spherical composite oxides of a kind of titanium dioxide comprises following steps:
After titania powder and water mixed, silicon sol is added mix again, obtain mixture;
Said mixture is carried out drying;
Dried mixture is ground into particulate matter with disintegrating apparatus;
The particulate matter that obtains after pulverizing is carried out spheroidization with the flame equipment heating process, namely obtain the spherical composite oxides of titanium dioxide.
As optimal way of the present invention, in the preparation method of the spherical composite oxides of above-mentioned titanium dioxide, preferably, the median size of described titania powder is 0.01 to 5 micron.
As optimal way of the present invention, in the preparation method of the spherical composite oxides of above-mentioned titanium dioxide, preferably, the mass content of silicon-dioxide is 1 to 50% in the described silicon sol.
As optimal way of the present invention, in the preparation method of the spherical composite oxides of above-mentioned titanium dioxide, preferably, the median size of described SiO 2 powder is less than the median size of described titania powder.
As optimal way of the present invention, in the preparation method of the spherical composite oxides of above-mentioned titanium dioxide, preferably, the median size of described SiO 2 powder is 0.005 to 0.1 micron.
As optimal way of the present invention, in the preparation method of the spherical composite oxides of above-mentioned titanium dioxide, preferably, described drying is one or more in spraying drying, tray dried, continuous type furnace drying or the continuous tunnel furnace drying means.
As optimal way of the present invention, in the preparation method of the spherical composite oxides of above-mentioned titanium dioxide, preferably, the preparation method of the spherical composite oxides of described titanium dioxide according to claim 1, it is characterized in that described disintegrating apparatus is one or more in ball mill, Universalpulverizer or the air-flow grinding machine.
As optimal way of the present invention, in the preparation method of the spherical composite oxides of above-mentioned titanium dioxide, preferably, described flame equipment is concentric triple tubular type flame burner.
The spherical composite oxides of a kind of titanium dioxide comprise the following component in massfraction:
Silicon-dioxide: 1 to 50%, the median size of described silicon-dioxide is 0.005 to 0.1 micron;
Titanium dioxide: 50 to 99%, the median size of the spherical composite oxides of described titanium dioxide is 0.01 to 5 micron;
The particle diameter of the spherical composite oxides of described titanium dioxide is 0.5 to 10 micron.
A kind of coating comprises the spherical composite oxides of above-mentioned titanium dioxide, and this coating is sun heat radiation coating.
Effect of the present invention and advantage are as follows:
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, have the photocatalyst effect, effective self-cleaning surface dirt under the effect of water, effectively toxic and harmful and organism in the decomposition chamber under the effect of light are such as formaldehyde etc.
Embodiment
Titania powder and silicon sol are mixed, but for titania powder and silicon sol can be mixed better, after can be first titania powder and water being mixed, silicon sol is added stir again, obtain mixture; Then said mixture is carried out drying; Dried mixture is ground into particulate matter with disintegrating apparatus; The particulate matter that obtains after pulverizing is carried out spheroidization with the flame equipment heating process, namely obtain the spherical composite oxides of titanium dioxide.
According to one embodiment of present invention, the titanium dioxide 100 parts (mass fractions) of 0.2 micron of commercially available median size is added in the pure water of 100 parts (mass fractions), add again the commercially available silicon-dioxide 30%(massfraction that contains) 10 parts of silicon sol (mass fraction), after mixing, put into electric furnace and be heated to 160 degree oven dry.Solid mixture after the oven dry is carried out spheroidization with dropping into flame burner behind the airflow milling crusher machine to 2 micron, and flame high-temperature zone temperature is 1950 to spend.Can obtain the spherical composite oxides of titanium dioxide, but through electron microscopy observation as a result the spherical composite oxides of gained titanium dioxide see the crystal boundary of titanium dioxide for spherical trace, median size through measuring the spherical composite oxides of this titanium dioxide is 1.7 microns, the spherical composite oxides of titanium dioxide that make are measured its reflectivity with integrating sphere diffused reflection instrument, and acquired results is as follows:
According to one embodiment of present invention, the titanium dioxide 100 parts (mass fractions) of 0.2 micron of commercially available median size is added in the pure water of 100 parts (mass fractions), add again the commercially available silicon-dioxide 30%(massfraction that contains) 30 parts of silicon sol (mass fraction), after mixing, use spray-drying process to carry out drying, drop into flame burner after dried solid mixture is crushed to 2 microns with ball mill and carry out spheroidization, flame high-temperature zone temperature maintains 1950 degree.Can obtain the spherical composite oxides of titanium dioxide, but through electron microscopy observation as a result the spherical composite oxides of gained titanium dioxide be the crystal boundary of sphere trace titanium dioxide, median size through measuring the spherical composite oxides of this titanium dioxide is 1.7 microns, the spherical composite oxides of titanium dioxide that make are measured its reflectivity with integrating sphere diffused reflection instrument, and acquired results is as follows:
According to one embodiment of present invention, the titanium dioxide 100 parts (mass fractions) of 0.2 micron of commercially available median size is added in the pure water of 100 parts (mass fractions), add again the commercially available silicon-dioxide 30%(massfraction that contains) 200 parts of silicon sol (mass fraction), after mixing, put into baking oven and be heated to 160 degree oven dry.Solid mixture after the oven dry is dropped into concentric triple tubular type flame burner after being crushed to 2 microns with Universalpulverizer carry out spheroidization, flame high-temperature zone temperature is 1950 degree.Can obtain the spherical composite oxides of titanium dioxide, but through electron microscopy observation as a result the spherical composite oxides of gained titanium dioxide see the crystal boundary of titanium dioxide for spherical trace, median size through measuring the spherical composite oxides of this titanium dioxide is 1.7 microns, the spherical composite oxides of titanium dioxide that make are measured its reflectivity with integrating sphere diffused reflection instrument, and acquired results is as follows:
According to one embodiment of present invention, the titanium dioxide 100 parts (mass fractions) of 0.2 micron of commercially available median size is added in the pure water of 100 parts (mass fractions), add again the commercially available silicon-dioxide 30%(massfraction that contains) 30 parts of silicon sol (mass fraction), after mixing, put into baking oven and be heated to 160 degree oven dry.Solid mixture after the oven dry is carried out spheroidization with dropping into flame burner behind the airflow milling crusher machine to 2 micron, and flame high-temperature zone temperature is 1950 to spend.Can obtain the spherical composite oxides of titanium dioxide, but through electron microscopy observation as a result the spherical composite oxides of gained titanium dioxide see the crystal boundary of titanium dioxide for spherical trace, median size through measuring the spherical composite oxides of this titanium dioxide is 1 micron, the spherical composite oxides of titanium dioxide that make are measured its reflectivity with integrating sphere diffused reflection instrument, and acquired results is as follows:
According to one embodiment of present invention, the titanium dioxide 100 parts (mass fractions) of 0.2 micron of commercially available median size is added in the pure water of 100 parts (mass fractions), add again the commercially available silicon-dioxide 30%(massfraction that contains) 30 parts of silicon sol (mass fraction), after mixing, put into baking oven and be heated to 160 degree oven dry.Solid mixture after the oven dry is carried out spheroidization with dropping into flame burner behind the airflow milling crusher machine to 2 micron, and flame high-temperature zone temperature is 1950 to spend.Can obtain the spherical composite oxides of titanium dioxide, but through electron microscopy observation as a result the spherical composite oxides of gained titanium dioxide see the crystal boundary of titanium dioxide for spherical trace, median size through measuring the spherical composite oxides of this titanium dioxide is 5 microns, the spherical composite oxides of titanium dioxide that make are measured its reflectivity with integrating sphere diffused reflection instrument, and acquired results is as follows:
Titanium dioxide commercially available in the various embodiments described above is measured its reflectivity with integrating sphere diffused reflection instrument, and acquired results is as follows:
The particle diameter of the spherical composite oxides of control titanium dioxide is 0.5 to 10 micron, because be difficult to obtain spherical powder when the particle diameter of the spherical composite oxides of titanium dioxide is lower than 0.5 micron, is not suitable for adding coating during greater than 10 microns.Titanium dioxide powder powder stock of the present invention is not particularly limited, but in order to realize better technique effect of the present invention, it is good selecting 0.1 to 0.5 micron pigment titanium dioxide.Silica material of the present invention is not particularly limited, but in order to reduce the consumption of silicon-dioxide, selecting particle diameter is that 0.005 to 0.1 micron silica silicon sol is good.
" embodiment " who speaks of in this manual, " another embodiment ", " embodiment ", etc., refer to specific features, structure or the characteristics described in conjunction with this embodiment and be included among at least one embodiment that the application's generality describes.A plurality of local appearance statement of the same race is not necessarily to refer to same embodiment in specification sheets.Furthermore, when describing a specific features, structure or characteristics in conjunction with arbitrary embodiment, what advocate is to realize that in conjunction with other embodiment this feature, structure or characteristics also fall within the scope of the invention.
Although invention has been described with reference to a plurality of explanatory embodiment of the present invention here, but, should be appreciated that those skilled in the art can design a lot of other modification and embodiments, these are revised and embodiment will drop within the disclosed principle scope and spirit of the application.More particularly, in the scope of and claim open in the application, can carry out multiple modification and improvement to building block and/or the layout of subject combination layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes also will be obvious.
Claims (10)
1. the preparation method of the spherical composite oxides of titanium dioxide is characterized in that, comprises following steps:
After titania powder and water mixed, silicon sol is added mix again, obtain mixture;
Said mixture is carried out drying;
Dried mixture is ground into particulate matter with disintegrating apparatus;
The particulate matter that obtains after pulverizing is carried out spheroidization with the flame equipment heating process, namely obtain the spherical composite oxides of titanium dioxide.
2. the preparation method of the spherical composite oxides of described titanium dioxide according to claim 1 is characterized in that the median size of described titania powder is 0.01 to 5 micron.
3. the preparation method of the spherical composite oxides of described titanium dioxide according to claim 1 is characterized in that the mass content of silicon-dioxide is 1 to 50% in the described silicon sol.
4. the preparation method of the spherical composite oxides of described titanium dioxide according to claim 3 is characterized in that the median size of described silicon-dioxide is less than the median size of described titania powder.
5. the preparation method of the spherical composite oxides of described titanium dioxide according to claim 4 is characterized in that the median size of described SiO 2 powder is 0.005 to 0.1 micron.
6. the preparation method of the spherical composite oxides of described titanium dioxide according to claim 1 is characterized in that described drying is one or more in spraying drying, tray dried, continuous type furnace drying or the continuous tunnel furnace drying means.
7. the preparation method of the spherical composite oxides of described titanium dioxide according to claim 1 is characterized in that described disintegrating apparatus is one or more in ball mill, Universalpulverizer or the air-flow grinding machine.
8. the preparation method of the spherical composite oxides of described titanium dioxide according to claim 1 is characterized in that described flame equipment is concentric triple tubular type flame burner.
9. the spherical composite oxides of titanium dioxide is characterized in that, comprise the following component in massfraction:
Silicon-dioxide: 1 to 50%, the median size of described silicon-dioxide is 0.005 to 0.1 micron;
Titanium dioxide: 50 to 99%, the median size of the spherical composite oxides of described titanium dioxide is 0.01 to 5 micron;
The particle diameter of the spherical composite oxides of described titanium dioxide is 0.5 to 10 micron.
10. a coating is characterized in that, comprises the spherical composite oxides of titanium dioxide as claimed in claim 9.
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Cited By (3)
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| CN103059634A (en) * | 2013-01-15 | 2013-04-24 | 雅安百图高新材料有限公司 | Titanium dioxide silicon dioxide composite oxide powder and preparation method thereof |
| CN103232733A (en) * | 2013-04-10 | 2013-08-07 | 雅安百图高新材料有限公司 | Nano-scale silica-coated titanium dioxide powder |
| CN105754427A (en) * | 2014-12-18 | 2016-07-13 | 太原市誉远涂料有限公司 | Self-cleaning colorized solar heat reflecting coating |
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| CN101891974A (en) * | 2010-07-21 | 2010-11-24 | 陕西科技大学 | Method for preparing TiO2/SiO2 composite powder |
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| CN1786087A (en) * | 2005-11-02 | 2006-06-14 | 刘应希 | Nano-composite paint possessing light catalytic function and its preparation method |
| CN1810640A (en) * | 2006-02-28 | 2006-08-02 | 华东理工大学 | Process and apparatus for preparing dispersed composite nanometer TiO2/SiO2 particle |
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| CN103059634A (en) * | 2013-01-15 | 2013-04-24 | 雅安百图高新材料有限公司 | Titanium dioxide silicon dioxide composite oxide powder and preparation method thereof |
| CN103232733A (en) * | 2013-04-10 | 2013-08-07 | 雅安百图高新材料有限公司 | Nano-scale silica-coated titanium dioxide powder |
| CN105754427A (en) * | 2014-12-18 | 2016-07-13 | 太原市誉远涂料有限公司 | Self-cleaning colorized solar heat reflecting coating |
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| CN102993816B (en) | 2015-01-21 |
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Address after: 625000 Ya'an Industrial Park, Sichuan, Ya'an Patentee after: Ya'an betu new materials Limited by Share Ltd Address before: 625000 Ya'an Industrial Park, Sichuan, Ya'an Patentee before: Ya'an Bestry Performance Materials Co., Ltd. |