CN107353673A - Titanium dioxide that surface is modified and preparation method thereof - Google Patents
Titanium dioxide that surface is modified and preparation method thereof Download PDFInfo
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- CN107353673A CN107353673A CN201710436188.8A CN201710436188A CN107353673A CN 107353673 A CN107353673 A CN 107353673A CN 201710436188 A CN201710436188 A CN 201710436188A CN 107353673 A CN107353673 A CN 107353673A
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- Prior art keywords
- titanium dioxide
- mixed slurry
- added
- dioxide powder
- modified
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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
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/36—Compounds of titanium
- C09C1/3607—Titanium dioxide
- C09C1/3653—Treatment with inorganic compounds
- C09C1/3661—Coating
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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
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/06—Treatment with inorganic compounds
- C09C3/063—Coating
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
- C01P2006/65—Chroma (C*)
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Catalysts (AREA)
Abstract
The present invention provides titanium dioxide that surface is modified and preparation method thereof, titanium dioxide powder is made into the aqueous solution that mass concentration is 5~20% by it, calgon is added wherein, adds water soluble silicon compound, SiO2 is deposited in titanium dioxide powder particle surface, under the conditions of temperature is 80~100 DEG C, aluminium salt coating agent is added, while it is 8.5~11 to keep the pH of mixed slurry, makes titanium dioxide dispersed, after washing, filter, dry, grind, the titanium dioxide product of surface modification is obtained.By the present invention titanium dioxide particle surface can be made to coat one layer of inorganic matter, i.e., silicon, aluminium ion are attached to titanium dioxide surface simultaneously, so as to reduce titanium dioxide surface-active, increase titanium dioxide dispersiveness, improve titanium dioxide whiteness.The inventive method is simple and easy, cost is low, pollution-free.
Description
Technical field
Titanium dioxide being modified the present invention relates to a kind of surface and preparation method thereof, specifically in titanium dioxide Surface coating
One layer of inorganic matter, so as to improve the dispersiveness of titanium dioxide, weatherability and whiteness, belong to dusty material processing technique field.
Background technology
The features such as titanium dioxide is because of the stable and good whiteness of its chemical property, tinting strength, tinting power, covering power and heat resistance is wide
General is applied to the pigment such as industry such as coating, rubber, plastics, papermaking, while also as photochemical catalyst, photoelectric cell, ultraviolet
Screener etc. is widely used.Not surface treated titanium dioxide surface is typically coated by polar group (such as-OH), so titanium
White powder easily produces reunion because of polarity absorption or the moisture absorption, it is difficult to disperse in other systems.Therefore titanium dioxide is coated
It is very important.With the high speed development of national economy, titanium dioxide demand also constantly rises.Though China's titanium dioxide production capacity is big
But product quality is not high, had a long way to go with the product of foreign well-known enterprise.So high quality titanium white powder can be produced by developing one kind
Method be very necessary.
Be modified that the influence factor of processing is many to titanium dioxide surface, such as the selection of covering, addition, add it is suitable
Sequence, addition speed, pH value, temperature, reaction time etc. all have a great impact to the property of powder.
The content of the invention
It is an object of the invention to provide the titanium dioxide that a kind of Surface coating has silicon, aluminum oxide or hydroxide protective layer
Titanium valve body, make the titanium dioxide powder after cladding that there is preferably dispersiveness, whiteness and weatherability.
The present invention is completed by following technical proposal：The titanium dioxide that a kind of surface is modified, it is characterised in that pass through following step
It is rapid to be made：
A, titanium dioxide powder is added to the water, is made into the aqueous solution that mass concentration is 4.5~19.5%；
B, in the step A aqueous solution, by 0.04~0.2% amount of titanium dioxide powder quality, calgon is added,
And pH value of solution is adjusted to 8~10, stir 1~2.5 hour, obtain mixed slurry；
C, in step B mixed slurry, the content for adding water soluble silicon compound to SiO2 is titanium dioxide powder quality
1~8%, regulation pH value of solution to 8~10, SiO2 is deposited in titanium dioxide powder particle surface；
D, under the conditions of temperature is 80~95 DEG C, the aluminium salt that concentration is 50~90g/L is added into step C mixed slurry
Coating agent, until the Al2O3 contents in mixed slurry are the 1~4% of titanium dioxide powder quality, stirring reaction 2~4 hours, directly
To aluminium salt complete hydrolysis, while it is 8.5~10.5 to keep the pH of mixed slurry, makes titanium dioxide dispersed；
E, after routinely washing step D mixed slurry, filter, drying, grinding, the titanium dioxide of surface modification is obtained
Product.
Silicon compound in the step C is sodium metasilicate, the one or more in potassium silicate, calcium silicates, wherein, sodium metasilicate
Addition to control in its alkali metal ion concentration be 0.1~0.25mol/L.
The titanium dioxide that described surface is modified, it is characterised in that the aluminium salt coating agent is aluminum sulfate, sodium aluminate or inclined aluminium
One or more in sour sodium, it is 45~95g/L to make the Al2O3 concentration in mixed slurry.
The present invention has following advantages and effect：, can be inorganic in one layer of titanium dioxide particle surface cladding using such scheme
Thing, i.e., silicon, aluminium ion are attached to titanium dioxide surface simultaneously, so as to reduce titanium dioxide surface-active, increase titanium dioxide is dispersed,
Improve titanium dioxide whiteness.The inventive method is simple and easy, cost is low, pollution-free.
Embodiment
Below by embodiment, the present invention will be further described.
Embodiment 1
The titanium dioxide that surface provided by the invention is modified, is made by the following steps：
A, titanium dioxide powder is added to the water, is made into the aqueous solution that mass concentration is 5%；
B, in the step A aqueous solution, by 0.05% amount of titanium dioxide powder quality, calgon is added, and adjust
PH value of solution is saved to 9, stirs 1 hour, obtains mixed slurry；
C, in step B mixed slurry, water-soluble metasilicate is added to SiO2Content for titanium dioxide powder quality
1%, regulation pH value of solution makes SiO to 82It is deposited in titanium dioxide powder particle surface；
D, under the conditions of temperature is 80 DEG C, the aluminum sulfate coating that concentration is 40g/L is added into step C mixed slurry
Agent, until the Al in mixed slurry2O3Content is the 1% of titanium dioxide powder quality, stirring reaction 2 hours, until the complete water of aluminium salt
Solution, while it is 8.5 to keep the pH of mixed slurry, makes titanium dioxide dispersed；
E, after routinely washing step D mixed slurry, filter, drying, grinding, the titanium dioxide of surface modification is obtained
Product.
Embodiment 2
The titanium dioxide that surface provided by the invention is modified, is made by the following steps：
A, titanium dioxide powder is added to the water, is made into the aqueous solution that mass concentration is 20%；
B, in the step A aqueous solution, by 0.2% amount of titanium dioxide powder quality, calgon is added, and adjust
PH value of solution stirs 3 hours to 11, obtains mixed slurry；
C, in step B mixed slurry, water-soluble potassium silicate is added to SiO2Content for titanium dioxide powder quality
10%, regulation pH value of solution makes SiO to 112It is deposited in titanium dioxide powder particle surface；
D, under the conditions of temperature is 100 DEG C, the sodium aluminate coating that concentration is 100g/L is added into step C mixed slurry
Agent, until the Al in mixed slurry2O3Content is the 5% of titanium dioxide powder quality, stirring reaction 5 hours, until the complete water of aluminium salt
Solution, while it is 11 to keep the pH of mixed slurry, makes titanium dioxide dispersed；
E, after routinely washing step D mixed slurry, filter, drying, grinding, the titanium dioxide of surface modification is obtained
Product.
Embodiment 3
The titanium dioxide that surface provided by the invention is modified, is made by the following steps：
A, titanium dioxide powder is added to the water, is made into the aqueous solution that mass concentration is 10%；
B, in the step A aqueous solution, by 0.1% amount of titanium dioxide powder quality, calgon is added, and adjust
PH value of solution stirs 2 hours to 9, obtains mixed slurry；
C, in step B mixed slurry, water-soluble metasilicate, potassium silicate, calcium silicates to SiO are added2Content be two
The 5% of titanium oxide powder quality, regulation pH value of solution make SiO to 92It is deposited in titanium dioxide powder particle surface；
D, under the conditions of temperature is 90 DEG C, aluminum sulfate, aluminic acid that concentration is 50g/L are added into step C mixed slurry
Sodium and sodium metaaluminate coating agent, until the Al in mixed slurry2O3Content is the 3% of titanium dioxide powder quality, and stirring reaction 3 is small
When, until aluminium salt complete hydrolysis, while it is 9 to keep the pH of mixed slurry, makes titanium dioxide dispersed；
E, after routinely washing step D mixed slurry, filter, drying, grinding, the titanium dioxide of surface modification is obtained
Product.
Embodiment 4
The titanium dioxide that surface provided by the invention is modified, is made by the following steps：
A, titanium dioxide powder is added to the water, is made into the aqueous solution that mass concentration is 12%；
B, in the step A aqueous solution, by 0.15% amount of titanium dioxide powder quality, calgon is added, and adjust
PH value of solution is saved to 9, stirs 2 hours, obtains mixed slurry；
C, in step B mixed slurry, water-soluble metasilicate, calcium silicates to SiO are added2Content be titanium dioxide powder
The 5% of quality, regulation pH value of solution make SiO to 92It is deposited in titanium dioxide powder particle surface；
D, under the conditions of temperature is 90 DEG C, aluminum sulfate, inclined aluminium that concentration is 50g/L are added into step C mixed slurry
Sour sodium coating agent, until the Al in mixed slurry2O3Content is the 3% of titanium dioxide powder quality, stirring reaction 3 hours, until aluminium
Salt complete hydrolysis, while it is 9 to keep the pH of mixed slurry, makes titanium dioxide dispersed；
E, after routinely washing step D mixed slurry, filter, drying, grinding, the titanium dioxide of surface modification is obtained
Product.
Claims (3)
1. the titanium dioxide that a kind of surface is modified, it is characterised in that be made by the following steps：
A, titanium dioxide powder is added to the water, is made into the aqueous solution that mass concentration is 4.5~19.5%；
B, in the step A aqueous solution, by 0.04~0.2% amount of titanium dioxide powder quality, calgon is added, and adjust
PH value of solution is saved to 8~10, stirs 1~2.5 hour, obtains mixed slurry；
C, in step B mixed slurry, add water soluble silicon compound to SiO2 content for titanium dioxide powder quality 1~
8%, regulation pH value of solution makes SiO2 be deposited in titanium dioxide powder particle surface to 8~10；
D, under the conditions of temperature is 80~95 DEG C, the aluminium salt coating that concentration is 50~90g/L is added into step C mixed slurry
Agent, until the Al2O3 contents in mixed slurry are the 1~4% of titanium dioxide powder quality, stirring reaction 2~4 hours, until aluminium
Salt complete hydrolysis, while it is 8.5~10.5 to keep the pH of mixed slurry, makes titanium dioxide dispersed；
E, after routinely washing step D mixed slurry, filter, drying, grinding, the titanium dioxide production of surface modification is obtained
Product.
2. the titanium dioxide that surface as claimed in claim 1 is modified, it is characterised in that the silicon compound in the step C is silicic acid
One or more in sodium, potassium silicate, calcium silicates, wherein, it is 0.1 that the addition of sodium metasilicate, which is controlled in its alkali metal ion concentration,
~0.25mol/L.
3. the titanium dioxide that surface as claimed in claim 1 is modified, it is characterised in that the aluminium salt coating agent is aluminum sulfate, aluminic acid
One or more in sodium or sodium metaaluminate, it is 45~95g/L to make the Al2O3 concentration in mixed slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710436188.8A CN107353673A (en) | 2017-06-12 | 2017-06-12 | Titanium dioxide that surface is modified and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710436188.8A CN107353673A (en) | 2017-06-12 | 2017-06-12 | Titanium dioxide that surface is modified and preparation method thereof |
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| CN107353673A true CN107353673A (en) | 2017-11-17 |
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| CN201710436188.8A Pending CN107353673A (en) | 2017-06-12 | 2017-06-12 | Titanium dioxide that surface is modified and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108997788A (en) * | 2018-08-27 | 2018-12-14 | 攀钢集团重庆钛业有限公司 | The preparation method of high covering power titanium dioxide |
| CN109761598A (en) * | 2019-01-12 | 2019-05-17 | 杨忠华 | A kind of preparation method of ceramic electrolyte |
| CN112143184A (en) * | 2020-09-29 | 2020-12-29 | 青岛周氏塑料包装有限公司 | Biodegradable color master batch and preparation method thereof |
| CN113174148A (en) * | 2021-04-20 | 2021-07-27 | 河南佰利联新材料有限公司 | White pigment for self-cleaning external wall and preparation method thereof |
| CN114249935A (en) * | 2020-09-19 | 2022-03-29 | 青岛周氏塑料包装有限公司 | Weather-resistant color master batch and preparation method thereof |
| CN115197603A (en) * | 2022-07-11 | 2022-10-18 | 内蒙古普诺思新材料科技有限公司 | Preparation method of composite calcium carbonate-titanium dioxide |
Citations (5)
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| CN102051073A (en) * | 2010-12-20 | 2011-05-11 | 昆明理工大学 | Surface-modified titanium white powder and preparation method thereof |
| CN102924980A (en) * | 2012-11-05 | 2013-02-13 | 昆明理工大学 | Surface modified titanium dioxide particles and preparation method thereof |
| CN102924979A (en) * | 2012-11-05 | 2013-02-13 | 昆明理工大学 | Method for preparing inorganic and organic coating titanium dioxide |
| CN103756367A (en) * | 2013-11-12 | 2014-04-30 | 漯河兴茂钛业股份有限公司 | Preparation method of novel coated anatase titanium dioxide |
| CN105419404A (en) * | 2015-12-18 | 2016-03-23 | 宁波新福钛白粉有限公司 | Preparation method of titanium dioxide for color masterbatch |
-
2017
- 2017-06-12 CN CN201710436188.8A patent/CN107353673A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| CN102051073A (en) * | 2010-12-20 | 2011-05-11 | 昆明理工大学 | Surface-modified titanium white powder and preparation method thereof |
| CN102924980A (en) * | 2012-11-05 | 2013-02-13 | 昆明理工大学 | Surface modified titanium dioxide particles and preparation method thereof |
| CN102924979A (en) * | 2012-11-05 | 2013-02-13 | 昆明理工大学 | Method for preparing inorganic and organic coating titanium dioxide |
| CN103756367A (en) * | 2013-11-12 | 2014-04-30 | 漯河兴茂钛业股份有限公司 | Preparation method of novel coated anatase titanium dioxide |
| CN105419404A (en) * | 2015-12-18 | 2016-03-23 | 宁波新福钛白粉有限公司 | Preparation method of titanium dioxide for color masterbatch |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108997788A (en) * | 2018-08-27 | 2018-12-14 | 攀钢集团重庆钛业有限公司 | The preparation method of high covering power titanium dioxide |
| CN109761598A (en) * | 2019-01-12 | 2019-05-17 | 杨忠华 | A kind of preparation method of ceramic electrolyte |
| CN114249935A (en) * | 2020-09-19 | 2022-03-29 | 青岛周氏塑料包装有限公司 | Weather-resistant color master batch and preparation method thereof |
| CN112143184A (en) * | 2020-09-29 | 2020-12-29 | 青岛周氏塑料包装有限公司 | Biodegradable color master batch and preparation method thereof |
| CN112143184B (en) * | 2020-09-29 | 2022-11-29 | 青岛周氏塑料包装有限公司 | Biodegradable color master batch and preparation method thereof |
| CN113174148A (en) * | 2021-04-20 | 2021-07-27 | 河南佰利联新材料有限公司 | White pigment for self-cleaning external wall and preparation method thereof |
| CN115197603A (en) * | 2022-07-11 | 2022-10-18 | 内蒙古普诺思新材料科技有限公司 | Preparation method of composite calcium carbonate-titanium dioxide |
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