CN104387808A - Preparation method of jointly-coated titanium dioxide powder - Google Patents
Preparation method of jointly-coated titanium dioxide powder Download PDFInfo
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- CN104387808A CN104387808A CN201410605959.8A CN201410605959A CN104387808A CN 104387808 A CN104387808 A CN 104387808A CN 201410605959 A CN201410605959 A CN 201410605959A CN 104387808 A CN104387808 A CN 104387808A
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Abstract
The invention provides a preparation method of jointly-coated titanium dioxide powder. The preparation method of jointly-coated titanium dioxide powder comprises the following steps: pulping rutile titanium dioxide, water and a dispersing agent, screening pulp of the materials by a sand mill and preparing the materials into pulp with concentration of 200-300g/L, putting the pulp in a coating container, fully stirring in the whole process, sequentially adding a zircon salt and an aluminum salt to inorganically coat, aging for a period of time, and adding an organic coating agent to organically coat so as to obtain a jointly-coated titanium dioxide powder sample. The preparation method of the jointly-coated titanium dioxide powder has the advantages that inorganic materials and organic materials are used as main coating agents for coating the titanium dioxide powder; the coated titanium dioxide powder is high in dispersibility and lipophilicity, is capable of greatly improving flexibility and plasticity of plastics, and is relatively good in application to production. The method is simple in process, convenient to operate, low in investment and low in operation cost, and has the effects of saving energy and avoiding emission of pollutants.
Description
Technical field
The invention belongs to chemical field, be specifically related to a kind of preparation method combining coating titanium dioxide.
Background technology
Titanium dioxide (TiO
2), being commonly called as titanium dioxide, having excellent whiteness, reducing power, opaqueness and extremely strong chemical stability, is the white pigment that the world today can not be substituted, best performance is different.Titanium dioxide can be widely used in the industrial circles such as coating, paint, plastics, paper, rubber, ink, chemical fibre, enamel.
At present, the production method of titanium dioxide has sulfuric acid process and chlorination process two kinds.Comparatively speaking, chlorination process is because of the novelty that possesses skills, and quality product is easy to the advantages such as control, and its tempo and quality product are obviously better than sulfuric acid process.But China there is no ripe Titanium Dioxide Produced by Chloride Procedure industrial production technology so far, directly results in China's titanium white powder quality product poor, can not meet the needs of production.Simultaneously titanium dioxide surface has extremely strong polarity and hydrophilic oleophobic property, easily reunites and produces precipitation in organic medium, cause its dispersiveness and dispersion stabilization poor.And there is photochemical activity in titanium dioxide itself, when its surface be exposed to visible ray particularly under UV-light time, can the organic compound contacted with it be oxidized, cause the organism contacted with it to be degraded and embrittlement and efflorescence occur.Surface treatment can block its photoactivation point, and isolated titanium dioxide contacts with the direct of light, improves the surface chemical property of titanium dioxide, improves application performance.Inorganic and the organic Surface coating process titanium dioxide of usual employing, the photochemical activity of titanium dioxide is mainly eliminated in inorganic process, and organic process is then improve the dispersiveness of titanium dioxide in organic materials system.Inorganic treatment process mainly contains aluminium coating, silicon coating and zirconium coating, and organic process then method is various.The method of organic process mainly adopts suitable tensio-active agent or auxiliary agent, by physical adsorption or rely on surface of pigments generation chemical reaction and improve titanium from powder dispersiveness.But simple inorganic or organic procedures can not realize the premium properties of titanium dioxide completely, the method for associating is adopted to enable the performance better improving titanium dioxide.
Summary of the invention
For the problem of above-mentioned titanium dioxide bad dispersibility and photochemical activity instability, main purpose of the present invention solves the second-rate problem of the titanium dioxide that chlorination process is produced, a kind of preparation method combining coating titanium dioxide is provided, especially providing a kind of is that main coating agent carries out coating process to titanium dioxide with inorganic-organism, obtains the titanium dioxide of polymolecularity.This titanium dioxide has good mobility, is mainly used in plastics, can be good at improving the toughness reinforcing of plastics and plasticity.
The present invention is achieved through the following technical solutions, a kind of preparation method combining coating titanium dioxide, and its concrete steps are:
1) pulled an oar together with water, dispersion agent by rutile titanium dioxide, after sand mill screening, be mixed with concentration is that the slurry of about 200 ~ 300g/L is inserted in coating container, and whole process fully stirs.
2) heat and regulate temperature to be 85 ~ 100 DEG C, the pH value regulating slurries with dilute alkaline soln is 9.5 ~ 10, in 30 minutes, add zirconates (dosage is 1.0% ~ 3.0% of titanium dioxide base-material) and diluted acid control ph is 9.5 ~ 10, add rear ageing 30 minutes.
3) in 30 minutes and stream adds aluminium salt (dosage is 2.0 ~ 3.5% of titanium dioxide base-material) and dilute sulphuric acid control ph is 9.5 ~ 10, adding diluted acid adjust ph after having fed in raw material is 8.0, ageing 1.5 hours, then be 7.0 by diluted acid adjust ph, continue ageing 30 minutes.
4) then washing, dry, comminution by gas stream, when comminution by gas stream, dusting, mouth pressurized gas imports organic coated dose, carries out coating process, i.e. the titanium dioxide sample of obtained associating coating process.
Described dispersion agent be in Sodium hexametaphosphate 99, water glass, sodium-chlor, dehydrated alcohol any one.
The add-on of described dispersion agent is massfraction 0.1 ~ 0.5%, (calculating by the quality of titanium dioxide).
Described zirconates be in zirconium sulfate, zirconium chloride, zirconium oxychloride, zirconium nitrate any one.
Described aluminium salt is a kind of in Tai-Ace S 150, aluminum chloride, sodium metaaluminate, aluminum nitrate.
Described organic coated dose be in D7066 organic silicone or polysiloxane any one, preferably organic coated dose is D7066 organic silicone.
Described diluted acid be in dilute hydrochloric acid, dilute sulphuric acid, dust technology any one, the volumetric molar concentration of its diluted acid is 0.1 ~ 1.0mol/l.
Described diluted alkaline be sodium hydroxide or potassium hydroxide any one, its diluted alkaline volumetric molar concentration is 0.1 ~ 2.0mol/l
Described zirconates, aluminium salt and acid add employing one_to_one corresponding, in order to avoid the introducing of the ion of different acid group, on the agent of titanium dioxide coating on the impact of titanium dioxide character.
Advantage of the present invention is to adopt the mode of inorganic-organic associating to improve the performance of titanium dioxide, making it titanium dioxide can be applied in plastics very well, titanium dioxide after gained is coated has better dispersed and lipophilicity, increasing tougheness and the plasticity of plastics can be improved well, apply in producing better.Method technique provided by the invention is simple, and easy to operate, energy-conservation, do not discharge pollutants, invest little, running cost is low.
Embodiment
Below in conjunction with embodiment, the present invention is described further.
Embodiment 1:
1) rutile titanium dioxide is pulled an oar together with water, dispersion agent, after sand mill screening, be mixed with concentration is that the slurry of 200g/L is inserted in coating container, add the sodium hexametaphosphate dispersant of 0.1% of titanium dioxide powder weight, whole process fully stirs.
2) heat and regulate temperature to be 85 DEG C, the pH value regulating slurries with 0.1mol/l diluted sodium hydroxide solution is 9.5 ~ 10, in 30 minutes, add zirconium sulfate (dosage is 1.0% of titanium dioxide base-material) and dilute sulphuric acid control ph is 9.5 ~ 10, add rear ageing 30 minutes.
3) in 30 minutes and stream adds Tai-Ace S 150 (dosage is 2.0% of titanium dioxide base-material) and dilute sulphuric acid control ph is 9.5 ~ 10, adding 0.2mol/l dilute sulphuric acid adjust ph after having fed in raw material is 8.0, ageing 1.5 hours, be 7.0 by 0.2mol/l dilute sulphuric acid adjust ph again, continue ageing 30 minutes.
4) then washing, dry, comminution by gas stream, when comminution by gas stream, import organic coated dose of D7066 organic silicone at the mouth pressurized gas that dusts, carry out coating process, i.e. the titanium dioxide sample of obtained associating coating process.
Embodiment 2:
1) rutile titanium dioxide is pulled an oar together with water, dispersion agent, after sand mill screening, be mixed with concentration is that the slurry of 200g/L is inserted in coating container, add the sodium hexametaphosphate dispersant of 0.5% of titanium dioxide powder weight, whole process fully stirs.
2) heat and regulate temperature to be 85 DEG C, the pH value regulating slurries with 0.1mol/l diluted sodium hydroxide solution is 9.5 ~ 10, in 30 minutes, add zirconium chloride (dosage is 1.0% of titanium dioxide base-material) and dilute hydrochloric acid control ph is 9.5 ~ 10, add rear ageing 30 minutes.
3) in 30 minutes and stream adds aluminum chloride (dosage is 2.0% of titanium dioxide base-material) and dilute hydrochloric acid control ph is 9.5 ~ 10, adding 0.2mol/l dilute hydrochloric acid adjust ph after having fed in raw material is 8.0, ageing 1.5 hours, be 7.0 by 0.2mol/l dilute hydrochloric acid adjust ph again, continue ageing 30 minutes.
4) then washing, dry, comminution by gas stream, when comminution by gas stream, import organic coated dose of D7066 organic silicone at the mouth pressurized gas that dusts, carry out coating process, i.e. the titanium dioxide sample of obtained associating coating process.
Embodiment 3:
1) rutile titanium dioxide is pulled an oar together with water, dispersion agent, after sand mill screening, be mixed with concentration is that the slurry of 300g/L is inserted in coating container, add the sodium hexametaphosphate dispersant of 0.1% of titanium dioxide powder weight, whole process fully stirs.
2) heat and regulate temperature to be 85 DEG C, the pH value regulating slurries with 0.1mol/l diluted sodium hydroxide solution is 9.5 ~ 10, in 30 minutes, add zirconium oxychloride (dosage is 1.0% of titanium dioxide base-material) and diluted acid control ph is 9.5 ~ 10, add rear ageing 30 minutes.
3) in 30 minutes and stream adds sodium metaaluminate (dosage is 2.0% of titanium dioxide base-material) and dilute hydrochloric acid control ph is 9.5 ~ 10, adding 0.2mol/l dilute hydrochloric acid adjust ph after having fed in raw material is 8.0, ageing 1.5 hours, be 7.0 by 0.2mol/l dilute hydrochloric acid adjust ph again, continue ageing 30 minutes.
4) then washing, dry, comminution by gas stream, when comminution by gas stream, import organic coated dose of D7066 organic silicone at the mouth pressurized gas that dusts, carry out coating process, i.e. the titanium dioxide sample of obtained associating coating process.
Described dispersion agent be in Sodium hexametaphosphate 99, water glass, sodium-chlor, dehydrated alcohol any one.
The add-on of described dispersion agent is massfraction 0.1 ~ 0.5%, (calculating by the quality of titanium dioxide).
Described zirconates be in zirconium sulfate, zirconium chloride, zirconium oxychloride, zirconium nitrate any one.
Described aluminium salt is a kind of in Tai-Ace S 150, aluminum chloride, sodium metaaluminate, aluminum nitrate.
Embodiment 4:
1) rutile titanium dioxide is pulled an oar together with water, dispersion agent, after sand mill screening, be mixed with concentration is that the slurry of 300g/L is inserted in coating container, add the sodium hexametaphosphate dispersant of 0.1% of titanium dioxide powder weight, whole process fully stirs.
2) heat and regulate temperature to be 85 DEG C, the pH value regulating slurries with 0.1mol/l diluted sodium hydroxide solution is 9.5 ~ 10, in 30 minutes, add zirconium nitrate (dosage is 1.0% of titanium dioxide base-material) and dust technology control ph is 9.5 ~ 10, add rear ageing 30 minutes.
3) in 30 minutes and stream adds aluminum nitrate (dosage is 2.0% of titanium dioxide base-material) and dust technology control ph is 9.5 ~ 10, adding 0.2mol/l dust technology adjust ph after having fed in raw material is 8.0, ageing 1.5 hours, be 7.0 by 0.2mol/l dust technology adjust ph again, continue ageing 30 minutes.
4) then washing, dry, comminution by gas stream, when comminution by gas stream, import organic coated dose of D7066 organic silicone at the mouth pressurized gas that dusts, carry out coating process, i.e. the titanium dioxide sample of obtained associating coating process.
Embodiment 5:
1) rutile titanium dioxide is pulled an oar together with water, dispersion agent, after sand mill screening, be mixed with concentration is that the slurry of 300g/L is inserted in coating container, add the sodium hexametaphosphate dispersant of 0.1% of titanium dioxide powder weight, whole process fully stirs.
2) heat and regulate temperature to be 95 DEG C, the pH value regulating slurries with 0.1mol/l diluted sodium hydroxide solution is 9.5 ~ 10, in 30 minutes, add zirconium oxychloride (dosage is 1.0% of titanium dioxide base-material) and dilute hydrochloric acid control ph is 9.5 ~ 10, add rear ageing 30 minutes.
3) in 30 minutes and stream adds sodium metaaluminate (dosage is 2.0% of titanium dioxide base-material) and dilute hydrochloric acid control ph is 9.5 ~ 10, adding 1.0mol/l dilute hydrochloric acid adjust ph after having fed in raw material is 8.0, ageing 1.5 hours, be 7.0 by 1.0mol/l dilute hydrochloric acid adjust ph again, continue ageing 30 minutes.
4) then washing, dry, comminution by gas stream, when comminution by gas stream, import organic coated dose of D7066 organic silicone at the mouth pressurized gas that dusts, carry out coating process, i.e. the titanium dioxide sample of obtained associating coating process.
Embodiment 6:
1) pulled an oar together with water, dispersion agent by rutile titanium dioxide, after sand mill screening, be mixed with concentration is that the slurry of 300g/L is inserted in coating container, and add the dispersion agent sodium-chlor of 0.1% of titanium dioxide powder weight, whole process fully stirs.
2) heat and regulate temperature to be 90 DEG C, the pH value regulating slurries with 0.1mol/l diluted sodium hydroxide solution is 9.5 ~ 10, in 30 minutes, add zirconium oxychloride (dosage is 1.0% of titanium dioxide base-material) and dilute hydrochloric acid control ph is 9.5 ~ 10, add rear ageing 30 minutes.
3) in 30 minutes and stream adds sodium metaaluminate (dosage is 2.0% of titanium dioxide base-material) and dilute hydrochloric acid control ph is 9.5 ~ 10, adding 0.2mol/l dilute hydrochloric acid adjust ph after having fed in raw material is 8.0, ageing 1.5 hours, be 7.0 by 0.2mol/l dilute hydrochloric acid adjust ph again, continue ageing 30 minutes.
4) then washing, dry, comminution by gas stream, when comminution by gas stream, import organic coated dose of D7066 organic silicone at the mouth pressurized gas that dusts, carry out coating process, i.e. the titanium dioxide sample of obtained associating coating process.
Embodiment 7:
1) rutile titanium dioxide is pulled an oar together with water, dispersion agent, after sand mill screening, be mixed with concentration is that the slurry of 300g/L is inserted in coating container, add the sodium hexametaphosphate dispersant of 0.5% of titanium dioxide powder weight, whole process fully stirs.
2) heat and regulate temperature to be 100 DEG C, the pH value regulating slurries with 0.1mol/l diluted sodium hydroxide solution is 9.5 ~ 10, in 30 minutes, add zirconium oxychloride (dosage is 1.0% of titanium dioxide base-material) and dilute hydrochloric acid control ph is 9.5 ~ 10, add rear ageing 30 minutes.
3) in 30 minutes and stream adds sodium metaaluminate (dosage is 2.0% of titanium dioxide base-material) and dilute hydrochloric acid control ph is 9.5 ~ 10, adding 0.5mol/l dilute hydrochloric acid adjust ph after having fed in raw material is 8.0, ageing 1.5 hours, be 7.0 by 0.5mol/l dilute hydrochloric acid adjust ph again, continue ageing 30 minutes.
4) then washing, dry, comminution by gas stream, when comminution by gas stream, import organic coated dose of D7066 organic silicone at the mouth pressurized gas that dusts, carry out coating process, i.e. the titanium dioxide sample of obtained associating coating process.
Claims (9)
1. combine a preparation method for coating titanium dioxide, it is characterized in that, its concrete steps are:
1) pulled an oar together with water, dispersion agent by rutile titanium dioxide, after sand mill screening, be mixed with concentration is that the slurry of about 200 ~ 300g/L is inserted in coating container, and whole process fully stirs;
2) heat and regulate temperature to be 85 ~ 100 DEG C, the pH value regulating slurries with dilute alkaline soln is 9.5 ~ 10, in 30 minutes, add zirconates (dosage is 1.0% ~ 3.0% of titanium dioxide base-material) and diluted acid control ph is 9.5 ~ 10, add rear ageing 30 minutes;
3) in 30 minutes and stream adds aluminium salt (dosage is 2.0 ~ 3.5% of titanium dioxide base-material) and dilute sulphuric acid control ph is 9.5 ~ 10, adding diluted acid adjust ph after having fed in raw material is 8.0, ageing 1.5 hours, then be 7.0 by diluted acid adjust ph, continue ageing 30 minutes;
4) then washing, dry, comminution by gas stream, when comminution by gas stream, dusting, mouth pressurized gas imports organic coated dose, carries out coating process, i.e. the titanium dioxide sample of obtained associating coating process.
2. a kind of preparation method combining coating titanium dioxide according to claim 1, is characterized in that, described dispersion agent be in Sodium hexametaphosphate 99, water glass, sodium-chlor, dehydrated alcohol any one.
3. a kind of preparation method combining coating titanium dioxide according to claim 1, is characterized in that, the add-on of described dispersion agent is massfraction 0.1 ~ 0.5%, (calculating by the quality of titanium dioxide).
4. a kind of preparation method combining coating titanium dioxide according to claim 1, is characterized in that, described zirconates be in zirconium sulfate, zirconium chloride, zirconium oxychloride, zirconium nitrate any one.
5. a kind of preparation method combining coating titanium dioxide according to claim 1, is characterized in that, described aluminium salt is a kind of in Tai-Ace S 150, aluminum chloride, sodium metaaluminate, aluminum nitrate.
6. a kind of preparation method combining coating titanium dioxide according to claim 1, is characterized in that, described organic coated dose be in D7066 organic silicone or polysiloxane any one, preferably organic coated dose is D7066 organic silicone.
7. a kind of preparation method combining coating titanium dioxide according to claim 1, is characterized in that, described diluted acid be in dilute hydrochloric acid, dilute sulphuric acid, dust technology any one, the volumetric molar concentration of its diluted acid is 0.1 ~ 1.0mol/l.
8. a kind of preparation method combining coating titanium dioxide according to claim 1, is characterized in that, described diluted alkaline be sodium hydroxide or potassium hydroxide any one, its diluted alkaline volumetric molar concentration is 0.1 ~ 2.0mol/l.
9. a kind of preparation method combining coating titanium dioxide according to claim 1, is characterized in that, described zirconates, aluminium salt and adding of acid adopt acid ion one_to_one corresponding.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105860591A (en) * | 2016-05-05 | 2016-08-17 | 中钛集团洛阳市裕星化工有限公司 | Preparation method of novel zirconium-aluminum coated titanium dioxide |
| CN106752109A (en) * | 2016-11-18 | 2017-05-31 | 漯河兴茂钛业股份有限公司 | A kind of preparation method of titanium dioxide used for decorative paper |
| CN107955415A (en) * | 2017-12-11 | 2018-04-24 | 安徽金星钛白（集团）有限公司 | Lightfastness titanium dioxide and preparation method thereof, application |
| CN108003660A (en) * | 2017-11-28 | 2018-05-08 | 广西雅照钛白有限公司 | A kind of composite titanium dioxide powder, preparation method thereof |
| CN108329719A (en) * | 2018-04-25 | 2018-07-27 | 四川龙蟒钛业股份有限公司 | A kind of titanium white production method with high glaze low oil absorption ferric |
| CN108864770A (en) * | 2018-09-05 | 2018-11-23 | 襄阳龙蟒钛业有限公司 | A kind of preparation method of low oil absorption ferric titanium dioxide |
| CN109535775A (en) * | 2018-12-24 | 2019-03-29 | 攀钢集团重庆钛业有限公司 | The preparation method of ink tailored version titanium dioxide |
| CN109762372A (en) * | 2019-03-01 | 2019-05-17 | 河南佰利联新材料有限公司 | A kind of preparation method improving titanium dioxide weatherability |
| CN111393876A (en) * | 2020-04-30 | 2020-07-10 | 龙蟒佰利联集团股份有限公司 | Preparation method of high-covering and high-gloss titanium dioxide |
| CN112646396A (en) * | 2019-10-12 | 2021-04-13 | 攀枝花大互通钛业有限公司 | Color master plastic grade titanium dioxide and preparation method thereof |
| CN115466526A (en) * | 2022-08-09 | 2022-12-13 | 冯兵 | Preparation method of composite titanium dioxide |
| CN115785699A (en) * | 2022-11-30 | 2023-03-14 | 攀钢集团研究院有限公司 | Titanium dioxide coating method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105860591B (en) * | 2016-05-05 | 2018-05-18 | 焦作市裕盛钛业有限公司 | A kind of preparation method of novel zirconium-aluminum-ctitanium titanium dioxide |
| CN105860591A (en) * | 2016-05-05 | 2016-08-17 | 中钛集团洛阳市裕星化工有限公司 | Preparation method of novel zirconium-aluminum coated titanium dioxide |
| CN106752109A (en) * | 2016-11-18 | 2017-05-31 | 漯河兴茂钛业股份有限公司 | A kind of preparation method of titanium dioxide used for decorative paper |
| CN108003660A (en) * | 2017-11-28 | 2018-05-08 | 广西雅照钛白有限公司 | A kind of composite titanium dioxide powder, preparation method thereof |
| CN107955415A (en) * | 2017-12-11 | 2018-04-24 | 安徽金星钛白（集团）有限公司 | Lightfastness titanium dioxide and preparation method thereof, application |
| CN108329719A (en) * | 2018-04-25 | 2018-07-27 | 四川龙蟒钛业股份有限公司 | A kind of titanium white production method with high glaze low oil absorption ferric |
| CN108329719B (en) * | 2018-04-25 | 2020-03-20 | 四川龙蟒钛业股份有限公司 | Production method of titanium dioxide with high gloss and low oil absorption |
| CN108864770A (en) * | 2018-09-05 | 2018-11-23 | 襄阳龙蟒钛业有限公司 | A kind of preparation method of low oil absorption ferric titanium dioxide |
| CN109535775B (en) * | 2018-12-24 | 2020-11-24 | 攀钢集团重庆钛业有限公司 | Preparation method of titanium dioxide special for printing ink |
| CN109535775A (en) * | 2018-12-24 | 2019-03-29 | 攀钢集团重庆钛业有限公司 | The preparation method of ink tailored version titanium dioxide |
| CN109762372A (en) * | 2019-03-01 | 2019-05-17 | 河南佰利联新材料有限公司 | A kind of preparation method improving titanium dioxide weatherability |
| CN112646396A (en) * | 2019-10-12 | 2021-04-13 | 攀枝花大互通钛业有限公司 | Color master plastic grade titanium dioxide and preparation method thereof |
| CN112646396B (en) * | 2019-10-12 | 2022-03-11 | 攀枝花大互通钛业有限公司 | Color master plastic grade titanium dioxide and preparation method thereof |
| CN111393876A (en) * | 2020-04-30 | 2020-07-10 | 龙蟒佰利联集团股份有限公司 | Preparation method of high-covering and high-gloss titanium dioxide |
| CN115466526A (en) * | 2022-08-09 | 2022-12-13 | 冯兵 | Preparation method of composite titanium dioxide |
| CN115785699A (en) * | 2022-11-30 | 2023-03-14 | 攀钢集团研究院有限公司 | Titanium dioxide coating method |
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