CN101921498A - Preparation method of titanium dioxide pigment with favorable dispersibility - Google Patents
Preparation method of titanium dioxide pigment with favorable dispersibility Download PDFInfo
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- CN101921498A CN101921498A CN 201010251173 CN201010251173A CN101921498A CN 101921498 A CN101921498 A CN 101921498A CN 201010251173 CN201010251173 CN 201010251173 CN 201010251173 A CN201010251173 A CN 201010251173A CN 101921498 A CN101921498 A CN 101921498A
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- titanium dioxide
- tio
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Abstract
The invention relates to a preparation method of a titanium dioxide pigment with favorable dispersibility, which is characterized by comprising the following steps of: forming an envelope layer of a silicoaluminate compound on the surface of titanium dioxide powders for improving application performance of the titanium dioxide pigment, washing, adding an organic treatment agent of organosilicon, uniformly stirring, and drying and pulverizing to obtain a titanium dioxide pigment product with favorable dispersibility. In the silicoaluminate compound, by weight of oxide, silica accounts for 1.0-5.0% of titanium dioxide by mass, aluminum oxide accounts for 2.0-4.0% of titanium dioxide by mass, and the organosilicon accounts for 0.5-2.0% of titanium dioxide by mass. The invention embodies the characteristics of favorable dispersibility and is suitable for the paint manufacturing industry of water-based and solvent-based systems.
Description
Technical field
The present invention relates to a kind of manufacture method of TiO 2 pigment of favorable dispersity.
Background technology
Titanium dioxide is a kind of white pigment, the popular name titanium dioxide, as a kind of important inorganic chemical product, because its stable chemical performance, have high refractive index and ideal size-grade distribution, therefore be widely used in the many faster fields of development in recent years speed with its good opacifying power, tinting strength, as coating, printing ink, plastics, rubber, paper, pottery and synthon etc.But existing TiO 2 pigment dispersed bad can not meet the demands, and caused the application performance instability with TiO 2 pigment, produces to the downstream and caused very big difficulty.
Summary of the invention
Technical problem to be solved by this invention provides a kind of manufacture method of TiO 2 pigment of favorable dispersity, be intended to improve the dispersing property of titanium dioxide, mainly be to improve the dispersiveness of TiO 2 pigment in application process, satisfy the characteristics that TiO 2 pigment downstream client uses.
The manufacture method of the TiO 2 pigment of a kind of favorable dispersity of the present invention, it is characterized in that it being the coating layer that forms one deck silicoaluminate in the titanium dioxide powder surface, after the washing, add the organic agent organosilicon, after stirring, pulverize through oven dry, obtain the TiO 2 pigment product of this favorable dispersity, described silicoaluminate, in oxide compound, the 1.0-5.0% of silica comprises titanium dioxide quality, aluminum oxide accounts for 2.0～4.0% of titanium dioxide quality, described organosilicon adopts methylsiloxane, and addition is the 0.5-3.0% of titanium dioxide quality.
The present invention is the deep processing of carrying out on the basis of the rutile titanium dioxide pigment of not carrying out coating.Being intended to improve the dispersing property of titanium dioxide, mainly is to improve the dispersiveness of TiO 2 pigment in application process.On the basis of the rutile titanium dioxide powder that does not carry out coating, through being mixed with uniform slurry, under certain pH, carry out the coating of silicoaluminate with ionized water, make its heavyization fully, so that form one deck coating film, washing then adds organic agent, result's oven dry, pulverize, obtain the TiO 2 pigment of favorable dispersity, to improve the dispersing property of titanium dioxide in application process.More specific technology is:
In the rutile titanium dioxide powder, under whipped state, add the slurry of ionized water preparation becoming 300～450g/L of 60～100 ℃, regulate pH value of slurry between 8～11, slowly drip sodium silicate solution (Na
2SiO
3), the alkalimetal ion concentration of solution is (with Na
2O measures meter) maintain 0.1～0.3mol/L, make 1.0～5.0% of silica comprises titanium dioxide gross weight, slaking 30～50min then, re-adjustment PH is between 6.5～8.5, slowly drip 100～200g/L alum liquor, make aluminum oxide account for 2.0～4.0% of titanium dioxide gross weight, slaking 30～50min then, regulate PH once more between 4.5～6.5, slaking 60～80min, finish the coating process, with above-mentioned mixed serum temperature be again 60～80 ℃ ionized water be washed till slip resistivity when 8000-10000 Ω cm, add the organic agent organosilicon of 0.5-3.0%, after stirring, oven dry is pulverized, and obtains the TiO 2 pigment product of this favorable dispersity.
The diameter of particle of the TiO 2 pigment product of the favorable dispersity that obtains is at 5～20 μ m.
In the rutile titanium dioxide powder, under whipped state, add the slurry of ionized water preparation becoming 300～450g/L of 80～100 ℃, if the concentration of slurry is too low, help the realization of subsequent technique and the realization of coating process, but uneconomical again in industrial production.Regulate pH value of slurry between 8～11,, could form the silicon dioxide compact film because under alkaline condition.Just be difficult to form dense film if temperature is lower than 60 ℃, and can form the sponge film of porous, loose shape.The back slowly drips sodium silicate solution, make 1.0～5.0% of silica comprises titanium dioxide gross weight, slaking 30～50min then, re-adjustment pH is between 6.5～8.5, slowly drip alum liquor, make aluminum oxide account for 2.0～4.0% of titanium dioxide gross weight, slaking 30～50min then, regulate pH once more between 4.5～6.5, slaking 60～80min, the pH that will remain slip at this moment is stabilized between 4.5～6.5, finishes the coating process, to improve the application performance of TiO 2 pigment.With above-mentioned mixed serum temperature is 60～80 ℃ the ionized water specific conductivity that is washed till slip when the 8000-10000 Ω cm, adds the organic agent organosilicon, and after stirring, oven dry is pulverized, and obtains the TiO 2 pigment product of this favorable dispersity.
The TiO 2 pigment product that the present invention produces can the tool favorable dispersity characteristics, make this product replace the relatively poor TiO 2 pigment product of original dispersing property.It is applicable to the paint production of water-based and solvent-based system.Because its dispersiveness is good, makes that the viscosity of abrasive is also very low.
The Main physical index
The crystalline structure rutile-type
Content of titanium dioxide 90.0～96.0%
Density 3.9～4.3Kg/L
Tap density 0.8～1.0Kg/L
Oil number 18～21g/100g
PH value 6.0～9.0
Outside durabitity: height
Dispersed: less than 10um
We adopt GB6746-86 that laboratory sample is tested, and the sample index is far longer than national standard, and laboratory sample has reached UDC 667.6:629 standard simultaneously.
Paint film color variable color≤2
Efflorescence≤1
Crackle≤2
Sample dispersion≤26um
Meet the GB/T8814-2004 standard with the PVC-U door and window profile material of sample making through the check of national chemical building material test center:
Color colour code L
*Be 95.6
a
*Be-0.24
b
*Be 4.23
The 4000h of anti-the artificial weathering
Aberration Δ E
*Be 0.96 (GB is≤5)
Δ b
*Be-0.51 (GB is≤3)
Dispersed measuring method: adopt the long oil alkyd system, in the zinc-plated tube of 250mL, add 120 parts of alkyd, add 90 parts of TiO 2 pigments, high speed shear stirred after 10 minutes, get mixture 50g with toolsetting, in a zinc-plated tube of new 250mL, add thinner 80g, high speed shear stirred 5 minutes again, measured dispersed under scraper plate fineness chi.Dispersed less than 10um.
Embodiment
Embodiment one:
The rutile titanium dioxide powder under the state that stirs, has been warmed up to 80～100 ℃ ionized water to wherein adding, and preparation becomes the slurry of 400g/L.Make pH value of slurry remain on 10, regulate pH with dilute sulphuric acid.Add sodium silicate solution, make silicon-dioxide reach 2% (earth silicon/titanic oxide), need dropping slowly, whole process is finished at 30～60min, slaking 30～50min regulates pH then 6.5 then, adds the solution of Tai-Ace S 150, make aluminum oxide reach 2% (aluminum oxide/titanium dioxide), slowly drip, whole process is finished in 30～60min, then slaking 30～50min, regulate PH=5, slaking 60～80min.Slip is poured in the cloth formula funnel with temperature till 60～80 ℃ ionized water is washed till sulfate radical-free.Add organic agent then, make organosilicon reach 0.5% (organosilicon/titanium dioxide), fully stir, material is put in the baking oven dried then.The material of oven dry is pulverized at small-sized crusher, and diameter of particle is at 5～20 μ m.
The Main physical index
The crystalline structure rutile-type
Content of titanium dioxide 93.4%
Density 4.12Kg/L
Tap density 0.86Kg/L
Oil number 18.22g/100g
PH value 7.03
Outside durabitity: height
Dispersed: less than 9um
Meet the GB/T8814-2004 standard with the PVC-U door and window profile material of sample making through the check of national chemical building material test center:
Color colour code L
*Be 96.6
a
*Be-0.14
b
*Be 4.63
The 4000h of anti-the artificial weathering
Aberration Δ E
*Be 0.86 (GB is≤5)
Δ b
*Be-0.58 (GB is≤3)
Embodiment two:
The rutile titanium dioxide powder under the state that stirs, has been warmed up to 80～100 ℃ ionized water to wherein adding, and preparation becomes the slurry of 450g/L.Make pH value of slurry remain on 8, regulate pH with dilute sulphuric acid.Add sodium silicate solution, make silicon-dioxide reach 1.5% (earth silicon/titanic oxide), need dropping slowly, whole process is finished at 30～60min, slaking 30～50min regulates pH then 8 then, adds alum liquor, make aluminum oxide reach 4% (aluminum oxide/titanium dioxide), slowly drip, whole process is finished in 30～60min, then slaking 30～50min, regulate pH=6.5, slaking 60～80min.Slip is poured in the cloth formula funnel with temperature till 60～80 ℃ ionized water is washed till sulfate radical-free.Add organic agent then, make organosilicon reach 1.0% (organosilicon/titanium dioxide), fully stir, material is put in the baking oven dried then.The material of oven dry is pulverized at small-sized crusher, and diameter of particle is at 5～20 μ m.
The Main physical index
The crystalline structure rutile-type
Content of titanium dioxide 94.3%
Density 4.14Kg/L
Tap density 0.97Kg/L
Oil number 19.11g/100g
PH value 7.63
Outside durabitity: height
Dispersed: less than 8um
Meet the GB/T8814-2004 standard with the PVC-U door and window profile material of sample making through the check of national chemical building material test center:
Color colour code L
*Be 97.6
a
*Be-0.34
b
*Be 4.53
The 4000h of anti-the artificial weathering
Aberration Δ E
*Be 0.76 (GB is≤5)
Δ b
*Be-0.31 (GB is≤3)
Embodiment three:
The rutile titanium dioxide powder under the state that stirs, has been warmed up to 80～100 ℃ ionized water to wherein adding, and preparation becomes the slurry of 500g/L.Make pH value of slurry remain on 11, regulate pH with dilute sulphuric acid.Add sodium silicate solution, make silicon-dioxide reach 2.5% (earth silicon/titanic oxide), need dropping slowly, whole process is finished at 30～60min, slaking 30～50min regulates pH then 8.5 then, adds alum liquor, make aluminum oxide reach 3% (aluminum oxide/titanium dioxide), slowly drip, whole process is finished in 30～60min, then slaking 30～50min, regulate pH=4.5, slaking 60～80min.Slip is poured in the cloth formula funnel with temperature till 60～80 ℃ ionized water is washed till sulfate radical-free.Add organic agent then, make organosilicon reach 1.5% (organosilicon/titanium dioxide), fully stir, material is put in the baking oven dried then.The material of oven dry is pulverized at small-sized crusher, and diameter of particle is at 5～20 μ m.
The Main physical index
The crystalline structure rutile-type
Content of titanium dioxide 93.1%
Density 4.16Kg/L
Tap density 0.97Kg/L
Oil number 18.45g/100g
PH value 8.01
Outside durabitity: height
Dispersed: less than 9um
Meet the GB/T8814-2004 standard with the PVC-U door and window profile material of sample making through the check of national chemical building material test center:
Color colour code L
*Be 96.7
a
*Be-0.23
b
*Be 3.69
The 4000h of anti-the artificial weathering
Aberration Δ E
*Be 0.87 (GB is≤5)
Δ b
*Be-0.64 (GB is≤3)
Claims (4)
1. the manufacture method of the TiO 2 pigment of a favorable dispersity, it is characterized in that it being the coating layer that forms one deck silicoaluminate in the titanium dioxide powder surface, after the washing, add the organic agent organosilicon, after stirring, pulverize through oven dry, obtain the TiO 2 pigment product of this favorable dispersity, described silicoaluminate, in oxide compound, the 1.0-5.0% of silica comprises titanium dioxide quality, aluminum oxide accounts for 2.0～4.0% of titanium dioxide quality, described organosilicon adopts methylsiloxane, and addition is the 0.5-3.0% of titanium dioxide quality.
2. manufacture method according to claim 1, it is characterized in that in the rutile titanium dioxide powder, under whipped state, the slurry that adds ionized water preparation becoming 300～450g/L of 60～100 ℃, regulate pH value of slurry between 8～11, slowly drip sodium silicate solution, make 1.0～5.0% of silica comprises titanium dioxide gross weight, slaking 30～50min then, re-adjustment pH slowly drips alum liquor between 6.5～8.5, make aluminum oxide account for 2.0～4.0% of titanium dioxide gross weight, slaking 30～50min then, regulate pH once more between 4.5～6.5, slaking 60～80min finishes the coating process, the ionized water that with above-mentioned mixed serum temperature is 60～80 ℃ again is washed till the resistivity of slip when 8000-10000 Ω cm, add the organic agent organosilicon, after stirring, oven dry, pulverize, obtain the TiO 2 pigment product of this favorable dispersity.
3. manufacture method according to claim 1 is characterized in that the alkalimetal ion concentration of described sodium silicate solution, with Na
2O measures meter, maintains 0.1～0.3mol/L, adopts the sulphur acid for adjusting pH value, and the concentration of alum liquor is 100～200g/L.
4. manufacture method according to claim 1, the diameter of particle of TiO 2 pigment product that it is characterized in that the favorable dispersity that obtains is at 5～20 μ m.
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|---|---|---|---|
| CN 201010251173 CN101921498A (en) | 2010-08-12 | 2010-08-12 | Preparation method of titanium dioxide pigment with favorable dispersibility |
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|---|---|---|---|
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102070921A (en) * | 2010-12-25 | 2011-05-25 | 锦州钛业有限公司 | Method for preparing special titanium dioxide pigment for plastic sectional materials by chlorination method |
| 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 |
| WO2013175339A1 (en) * | 2012-05-22 | 2013-11-28 | Basf Se | Process for preparing metal oxide coated aluminium effect pigments |
| CN104039894A (en) * | 2011-10-28 | 2014-09-10 | 纳幕尔杜邦公司 | Treated inorganic pigments having improved dispersability and use thereof in paper products |
| CN104919008A (en) * | 2012-11-13 | 2015-09-16 | 纳幕尔杜邦公司 | Process for making silica containing self-dispersing pigments |
| CN111253781A (en) * | 2020-03-13 | 2020-06-09 | 广东工业大学 | Composite modified titanium dioxide and preparation method and application thereof |
| CN115491052A (en) * | 2022-10-20 | 2022-12-20 | 福建乐钛科技有限公司 | Titanium dioxide for termite-repelling chemical fiber and preparation method thereof |
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| WO2004074177A1 (en) * | 2003-02-18 | 2004-09-02 | The Circle For The Promotion Of Sciecne And Engineering | Polymer-coated metal oxide and process for producing the same |
| CN1844265A (en) * | 2006-04-14 | 2006-10-11 | 山东东佳集团有限公司 | Process for making white titanium pigment with high application performance |
| CN1844263A (en) * | 2006-04-21 | 2006-10-11 | 江苏镇钛化工有限公司 | Process for preparing titanium dioxide with dispersion sensitive property and high weatherability |
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2010
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2004074177A1 (en) * | 2003-02-18 | 2004-09-02 | The Circle For The Promotion Of Sciecne And Engineering | Polymer-coated metal oxide and process for producing the same |
| CN1844265A (en) * | 2006-04-14 | 2006-10-11 | 山东东佳集团有限公司 | Process for making white titanium pigment with high application performance |
| CN1844263A (en) * | 2006-04-21 | 2006-10-11 | 江苏镇钛化工有限公司 | Process for preparing titanium dioxide with dispersion sensitive property and high weatherability |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102070921B (en) * | 2010-12-25 | 2013-05-29 | 锦州钛业有限公司 | Method for preparing special titanium dioxide pigment for plastic sectional materials by chlorination method |
| CN102070921A (en) * | 2010-12-25 | 2011-05-25 | 锦州钛业有限公司 | Method for preparing special titanium dioxide pigment for plastic sectional materials by chlorination method |
| CN104039894A (en) * | 2011-10-28 | 2014-09-10 | 纳幕尔杜邦公司 | Treated inorganic pigments having improved dispersability and use thereof in paper products |
| WO2013175339A1 (en) * | 2012-05-22 | 2013-11-28 | Basf Se | Process for preparing metal oxide coated aluminium effect pigments |
| US9701844B2 (en) | 2012-05-22 | 2017-07-11 | Basf Se | Process for preparing metal oxide coated aluminium effect pigments |
| CN102924979A (en) * | 2012-11-05 | 2013-02-13 | 昆明理工大学 | Method for preparing inorganic and organic coating titanium dioxide |
| CN102924979B (en) * | 2012-11-05 | 2014-04-02 | 昆明理工大学 | Method for preparing inorganic and organic coating titanium dioxide |
| CN102924980A (en) * | 2012-11-05 | 2013-02-13 | 昆明理工大学 | Surface modified titanium dioxide particles and preparation method thereof |
| CN104919008A (en) * | 2012-11-13 | 2015-09-16 | 纳幕尔杜邦公司 | Process for making silica containing self-dispersing pigments |
| CN104919008B (en) * | 2012-11-13 | 2017-07-18 | 纳幕尔杜邦公司 | Method for preparing the silica containing self-dispersing pigment of bag |
| CN111253781A (en) * | 2020-03-13 | 2020-06-09 | 广东工业大学 | Composite modified titanium dioxide and preparation method and application thereof |
| CN111253781B (en) * | 2020-03-13 | 2021-08-24 | 广东工业大学 | Composite modified titanium dioxide and preparation method and application thereof |
| CN115491052A (en) * | 2022-10-20 | 2022-12-20 | 福建乐钛科技有限公司 | Titanium dioxide for termite-repelling chemical fiber and preparation method thereof |
| CN115491052B (en) * | 2022-10-20 | 2023-08-18 | 福建乐钛科技有限公司 | Titanium dioxide for termite-expelling chemical fiber and preparation method thereof |
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Application publication date: 20101222 |