CN102993816B - 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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- CN102993816B CN102993816B CN201210418125.7A CN201210418125A CN102993816B CN 102993816 B CN102993816 B CN 102993816B CN 201210418125 A CN201210418125 A CN 201210418125A CN 102993816 B CN102993816 B CN 102993816B
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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 present invention relates to a kind of paint additive, is specifically related to a kind of Titanium dioxide spherical composite oxide and preparation method thereof.
Background technology
Titanium dioxide, because of its high permittivity and high refractive index, is widely used at coatings industry.The titanium dioxide of Large stone (diameter is greater than 1 micron) has high infrared-reflecting power, can be applicable to solar heat radiation reflection coating, fiber etc., can reduce the power consumption of air-conditioning, reduces energy consumption, makes contributions to global environment.But Large stone titanium oxide has following problem: in industrial production, crystal growth is difficult, cost is high; Crystal shape is aspherical, is unfavorable for high filling; There is certain photocatalyst effect, have Decomposition to the organism in coating; Not easily carry out silane coupling agent process.
Summary of the invention
The object of the invention is to the defect solving above-mentioned prior art, provide a kind of and there is Titanium dioxide spherical composite oxide of the high fill-ratio of photocatalyst effect and preparation method thereof.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
A preparation method for Titanium dioxide spherical composite oxide, comprises following steps:
After titania powder and water are mixed, then silicon sol is added mix, obtain mixture;
Said mixture is carried out drying;
Dried mixture disintegrating apparatus is ground into particulate matter;
Spheroidization process is carried out in the particulate matter flame equipment obtained after pulverizing heating, namely obtains Titanium dioxide spherical composite oxide.
As optimal way of the present invention, in the preparation method of above-mentioned Titanium dioxide spherical composite oxide, 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 above-mentioned Titanium dioxide spherical composite oxide, preferably, in described silicon sol, the mass content of silicon-dioxide is 1 to 50%.
As optimal way of the present invention, in the preparation method of above-mentioned Titanium dioxide spherical composite oxide, 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 above-mentioned Titanium dioxide spherical composite oxide, 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 above-mentioned Titanium dioxide spherical composite oxide, preferably, described drying is one or more in spraying dry, tray dried, continuous type furnace drying or continuous tunnel furnace drying means.
As optimal way of the present invention, in the preparation method of above-mentioned Titanium dioxide spherical composite oxide, preferably, the preparation method of Titanium dioxide spherical composite oxide according to claim 1, it is characterized in that, described disintegrating apparatus is one or more in ball mill, Universalpulverizer or air-flow grinding machine.
As optimal way of the present invention, in the preparation method of above-mentioned Titanium dioxide spherical composite oxide, preferably, described flame equipment is concentric ternary pipe-type flame burner.
A kind of Titanium dioxide spherical composite oxide, comprises 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 described Titanium dioxide spherical composite oxide is 0.01 to 5 micron;
The particle diameter of described Titanium dioxide spherical composite oxide is 0.5 to 10 micron.
A kind of coating, comprise above-mentioned Titanium dioxide spherical composite oxide, this coating is sun heat radiation coating.
Effect of the present invention and advantage as follows:
1, Titanium dioxide spherical composite oxide particle diameter is comparatively large, and energy usable reflection infrared rays, reduces the room temp of building.
2, Titanium dioxide spherical composite oxide is spherical, has high workability, high fill-ratio, makes body surface appended by it form the protective layer of the smooth densification of one deck.
3, there is photocatalyst effect, can effective self-cleaning surface dirt under the effect of water, toxic and harmful and organism in effective decomposition chamber under the effect of light, as formaldehyde etc.
Embodiment
Titania powder and silicon sol to be mixed, but in order to make titania powder and silicon sol mix better, after can first titania powder and water being mixed, then silicon sol being added stir, obtaining mixture; Then said mixture is carried out drying; Dried mixture disintegrating apparatus is ground into particulate matter; Spheroidization process is carried out in the particulate matter flame equipment obtained after pulverizing heating, namely obtains Titanium dioxide spherical composite oxide.
According to one embodiment of present invention, the titanium dioxide 100 parts (mass fraction) of commercially available median size 0.2 micron is added in the pure water of 100 parts (mass fractions), add commercially available containing silicon-dioxide 30%(massfraction again) silicon sol 10 parts (mass fraction), after mixing, put into electric furnace and be heated to 160 degree of oven dry.Solid mixture airflow milling crusher machine to 2 after oven dry micron is dropped into flame burner afterwards and carries out spheroidization, flame high-temperature zone temperature is 1950 degree.Titanium dioxide spherical composite oxide can be obtained, through electron microscopy observation result gained Titanium dioxide spherical composite oxide be spherical, the crystal boundary of titanium dioxide can be seen by trace, it is 1.7 microns through measuring the median size of this Titanium dioxide spherical composite oxide, obtained Titanium dioxide spherical composite oxide integrating sphere diffused reflection instrument is measured its reflectivity, and acquired results is as follows:
According to one embodiment of present invention, the titanium dioxide 100 parts (mass fraction) of commercially available median size 0.2 micron is added in the pure water of 100 parts (mass fractions), add commercially available containing silicon-dioxide 30%(massfraction again) silicon sol 30 parts (mass fraction), after mixing, spray-drying process is used to carry out drying, dried solid mixture ball mill is crushed to 2 microns afterwards drop into flame burner carry out spheroidization, flame high-temperature zone temperature maintains 1950 degree.Titanium dioxide spherical composite oxide can be obtained, through electron microscopy observation result gained Titanium dioxide spherical composite oxide be spherical, can the crystal boundary of trace titanium dioxide, it is 1.7 microns through measuring the median size of this Titanium dioxide spherical composite oxide, obtained Titanium dioxide spherical composite oxide integrating sphere diffused reflection instrument is measured its reflectivity, and acquired results is as follows:
According to one embodiment of present invention, the titanium dioxide 100 parts (mass fraction) of commercially available median size 0.2 micron is added in the pure water of 100 parts (mass fractions), add commercially available containing silicon-dioxide 30%(massfraction again) silicon sol 200 parts (mass fraction), after mixing, put into baking oven and be heated to 160 degree of oven dry.Drop into concentric ternary pipe-type flame burner after solid mixture Universalpulverizer after oven dry is crushed to 2 microns and carry out spheroidization, flame high-temperature zone temperature is 1950 degree.Titanium dioxide spherical composite oxide can be obtained, through electron microscopy observation result gained Titanium dioxide spherical composite oxide be spherical, the crystal boundary of titanium dioxide can be seen by trace, it is 1.7 microns through measuring the median size of this Titanium dioxide spherical composite oxide, obtained Titanium dioxide spherical composite oxide integrating sphere diffused reflection instrument is measured its reflectivity, and acquired results is as follows:
According to one embodiment of present invention, the titanium dioxide 100 parts (mass fraction) of commercially available median size 0.2 micron is added in the pure water of 100 parts (mass fractions), add commercially available containing silicon-dioxide 30%(massfraction again) silicon sol 30 parts (mass fraction), after mixing, put into baking oven and be heated to 160 degree of oven dry.Solid mixture airflow milling crusher machine to 2 after oven dry micron is dropped into flame burner afterwards and carries out spheroidization, flame high-temperature zone temperature is 1950 degree.Titanium dioxide spherical composite oxide can be obtained, through electron microscopy observation result gained Titanium dioxide spherical composite oxide be spherical, the crystal boundary of titanium dioxide can be seen by trace, it is 1 micron through measuring the median size of this Titanium dioxide spherical composite oxide, obtained Titanium dioxide spherical composite oxide integrating sphere diffused reflection instrument is measured its reflectivity, and acquired results is as follows:
According to one embodiment of present invention, the titanium dioxide 100 parts (mass fraction) of commercially available median size 0.2 micron is added in the pure water of 100 parts (mass fractions), add commercially available containing silicon-dioxide 30%(massfraction again) silicon sol 30 parts (mass fraction), after mixing, put into baking oven and be heated to 160 degree of oven dry.Solid mixture airflow milling crusher machine to 2 after oven dry micron is dropped into flame burner afterwards and carries out spheroidization, flame high-temperature zone temperature is 1950 degree.Titanium dioxide spherical composite oxide can be obtained, through electron microscopy observation result gained Titanium dioxide spherical composite oxide be spherical, the crystal boundary of titanium dioxide can be seen by trace, it is 5 microns through measuring the median size of this Titanium dioxide spherical composite oxide, obtained Titanium dioxide spherical composite oxide integrating sphere diffused reflection instrument is measured its reflectivity, and acquired results is as follows:
Titanium dioxide integrating sphere diffused reflection instrument commercially available in the various embodiments described above is measured its reflectivity, and acquired results is as follows:
The particle diameter controlling Titanium dioxide spherical composite oxide is 0.5 to 10 micron, because when the particle diameter of Titanium dioxide spherical composite oxide is difficult to obtain spherical powder lower than when 0.5 micron, be not suitable for adding coating when being greater than 10 microns.Titanium dioxide powder powder stock of the present invention is not particularly limited, but in order to realize technique effect of the present invention better, selects the pigment titanium dioxide of 0.1 to 0.5 micron to be good.Silica material of the present invention is not particularly limited, but in order to reduce the consumption of silicon-dioxide, it is good for selecting particle diameter to be 0.005 to 0.1 micron silica silicon sol.
Spoken of in this manual " embodiment ", " another embodiment ", " embodiment ", etc., refer to the specific features, structure or the feature that describe in conjunction with this embodiment and be included at least one embodiment of the application's generality description.Multiple place occurs that statement of the same race is not necessarily refer to same embodiment in the description.Furthermore, when describing specific features, structure or a feature in conjunction with any embodiment, what advocate is also fall within the scope of the invention to realize this feature, structure or feature in conjunction with other embodiments.
Although with reference to multiple explanatory embodiment of the present invention, invention has been described here, but, should be appreciated that, those skilled in the art can design a lot of other amendment and embodiment, these amendments and embodiment will drop within spirit disclosed in the present application and spirit.More particularly, in the scope of and claim open in the application, multiple modification and improvement can be carried out to the building block of subject combination layout and/or layout.Except the modification of carrying out building block and/or layout is with except improvement, to those skilled in the art, other purposes also will be obvious.
Claims (4)
1. a preparation method for Titanium dioxide spherical composite oxide, is characterized in that, comprises following steps:
After titania powder and water are mixed, then silicon sol is added mix, obtain mixture;
Said mixture is carried out drying;
Dried mixture disintegrating apparatus is ground into particulate matter;
Spheroidization process is carried out in the particulate matter flame equipment obtained after pulverizing heating, and namely obtain Titanium dioxide spherical composite oxide, flame high-temperature zone temperature is 1950 DEG C;
The median size of described titania powder is 0.01 to 5 micron;
In described silicon sol, the mass content of silicon-dioxide is 1 to 50%;
The median size of described silicon-dioxide is less than the median size of described titania powder;
The median size of described silicon-dioxide is 0.005 to 0.1 micron.
2. the preparation method of Titanium dioxide spherical composite oxide according to claim 1, is characterized in that, described drying is one or more in the dry or continuous tunnel furnace drying means of spraying dry, tray dried, continuous type furnace.
3. the preparation method of Titanium dioxide spherical composite oxide according to claim 1, is characterized in that, described disintegrating apparatus is one or more in ball mill, Universalpulverizer or air-flow grinding machine.
4. the preparation method of Titanium dioxide spherical composite oxide according to claim 1, it is characterized in that, described flame equipment is concentric ternary pipe-type flame burner.
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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 |
| CN105754427B (en) * | 2014-12-18 | 2018-08-21 | 太原市誉远涂料有限公司 | A kind of self-cleaning colored solar heat reflection paint |
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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 |
| 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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| 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 |
| CN101037206A (en) * | 2006-03-14 | 2007-09-19 | 连云港东海硅微粉有限责任公司 | Production method of high-purity ball-shaped silicon micro powder |
| CN101570331B (en) * | 2009-06-12 | 2011-08-24 | 中国地质大学（武汉） | Preparation method of high-purity ultrafine spherical quartz powder |
| CN101570332B (en) * | 2009-06-12 | 2011-04-20 | 中国地质大学（武汉） | Preparation method of high-purity low-radioactivity spherical silicon micropowder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| 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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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. |