CN101891973B - Special titanium white powder pigment for masterbatch and preparation method thereof - Google Patents
Special titanium white powder pigment for masterbatch and preparation method thereof Download PDFInfo
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- CN101891973B CN101891973B CN 201010231176 CN201010231176A CN101891973B CN 101891973 B CN101891973 B CN 101891973B CN 201010231176 CN201010231176 CN 201010231176 CN 201010231176 A CN201010231176 A CN 201010231176A CN 101891973 B CN101891973 B CN 101891973B
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Abstract
The invention belongs to the technical field of chemical materials, relating to a titanium white powder pigment, particularly to a special titanium white powder pigment for masterbatch and a preparation method thereof. According to the technical scheme provided by the invention, the titanium white powder is rutile type particles, and a coating material is coated on the surface of the titanium white powder. The invention is characterized in that the coating material comprises aluminum oxide and organosilicon, wherein the content of the aluminum oxide is 1.0-2.0% of that of the titanium white powder by weight percent and the content of the organosilicon is 0.3-0.5% of that of the titanium white powder by weight percent. The invention has the characteristics of good weather resistance and covering power, excellent dried powder mobility and convenience for pneumatic conveying and mixing.
Description
Technical field
The invention belongs to chemical material technical field, relate to a kind of titanium white powder pigment, specifically a kind of special titanium white powder pigment for masterbatch and preparation method thereof.
Background technology
Masterbatch is the plastic colorant that is formed through good distribution by a high proportion of pigment, additive and thermoplastic resin, in brief, and Masterbatch=pigment+additive+carrier.The painted coloring plastic method that the most generally adopts now of Masterbatch, its tinting material and natural resin that is scattered in carrier is simply mixed rear for the manufacture of plastics.Pigment is the important component part in the Masterbatch, pigment is divided into two kinds of pigment dyestuff and mineral dyes, in mineral dye, titanium dioxide be a kind of be the very excellent white pigment of performance, it is widely used in the industries such as coating, plastic cement, plastics, papermaking, printing-ink, chemical fibre, rubber, makeup, pottery.For different application industries, titanium dioxide generally all needs the processing through mineral compound, to improve its application performances such as weathering resistance, whiteness, reducing power and opacifying power.Such as the titanium white powder pigment that is used for plastics and outdoor coating except should having excellent pigment performance, preferably also to have weathering resistance, that is the ability of prevention xanthochromia and efflorescence, in order to improve weathering resistance, titanium white powder pigment usually carries out coating with one or more hydrous oxides to be processed.In addition, plastics need better opacifying power with titanium dioxide, use special organosilicon to carry out organic coating and can improve this performance.These above processing modes all are the approach that improves the titanium dioxide application performance and reduce cost.Present domestic Masterbatch special titanium pigment, all more external imported product has gap at aspects such as dispersiveness, opacifying power, temperature tolerance, photostabilization, product of the present invention is through the high pressure gas grinding dispersion, use simultaneously special organic coated processing in the dispersion process, in organic solvent, have fabulous dispersiveness and intermiscibility, improve simultaneously the opacifying power of product, also had lower oil number.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of weathering resistance, opacifying power good, the dry powder flowability is good, is convenient to gas delivery and special titanium white powder pigment for masterbatch that is mixed and preparation method thereof.
According to technical scheme provided by the invention: a kind of special titanium white powder pigment for masterbatch, described titanium dioxide is the rutile-type particle, surface at the titanium dioxide particle is coated with coated fertilizer, it is characterized in that: described coated fertilizer comprises aluminum oxide and organosilicon, percentage ratio meter by weight, the content of described aluminum oxide is 1.0～2.0% of titanium dioxide particle, and described organosilyl content is 0.3～0.5% of titanium dioxide particle.
A kind of production method of special titanium white powder pigment for masterbatch is characterized in that comprising the steps:
(1) the titanium dioxide particle with rutile-type joins in the deionized water, and making beating is mixed with the titanium dioxide aqeous suspension, and the concentration of titanium dioxide aqeous suspension is 400～500g/L;
(2) add dispersion agent in the above-mentioned titanium dioxide aqeous suspension for preparing and disperseed 25～35 minutes, percentage ratio meter by weight, described dispersant dosage is 0.05%～1% of titanium dioxide particle; Then this titanium dioxide aqeous suspension is carried out milled processed;
(3) adopt deionized water to be diluted to 250g/L～350g/L through the titanium dioxide aqeous suspension of milled processed, then be heated to 50 ℃～80 ℃ temperature range and keep;
(4) add a certain amount of aluminum compound aqueous solution in the titanium dioxide aqeous suspension after the heating and fully disperse, the calculating principle of the aluminium element add-on in the described aluminum compound aqueous solution is: the weight that percentage ratio meter by weight, whole aluminium elements of adding generate aluminum oxide be in the titanium dioxide aqeous suspension the titanium dioxide particle 1～2%;
(5) keep temperature range in the step (3), the pH value of using pH adjusting agent will add the titanium dioxide aqeous suspension of aluminium element is adjusted between 4～11, by adjusting pH with the form precipitation of aluminium with aluminum oxide, reacted 6～8 hours, and made the titanium dioxide particle surface form one deck alumina-coated layer;
(6) keep temperature range in the step (3), adopt pH adjusting agent that the pH value of above-mentioned titanium dioxide aqeous suspension is adjusted to neutrality, recurring 1～2 hour, to the titanium white powder pigment aqeous suspension filter, wash, drying, obtain the titanium white powder pigment particle;
(7) add organosilicon in the titanium white powder pigment particle that obtains afterwards to drying, carry out micronizing and organic process and coat operation, percentage ratio meter by weight, the content of described aluminum oxide is 1.0～2.0% of titanium dioxide particle, and described organosilyl add-on is 0.3～0.5% of titanium dioxide particle.
As a further improvement on the present invention, in the step (2) of titanium white powder pigment production method, the dispersion agent of adding is phosphoric acid salt or silicate.Described phosphoric acid salt preferably adopts Sodium hexametaphosphate 99, and described silicate preferably adopts water glass.
As a further improvement on the present invention, in the step (3) of titanium white powder pigment production method, the titanium dioxide aqeous suspension after the dilution is heated to 50～60 ℃.
As a further improvement on the present invention, in the step (4) of titanium white powder pigment production method, the aluminum compound in the aluminum compound solution is the mixture of one or more materials in Tai-Ace S 150, sodium metaaluminate or all the other the hydrolyzable aluminum compounds.
As a further improvement on the present invention, in the step (5) and (6) of titanium white powder pigment production method, the pH adjusting agent of using is aqueous sodium hydroxide solution or dilute sulfuric acid aqueous solution.
The present invention compared with prior art, advantage is: it is mobile that the titanium white powder pigment that makes has splendid dry powder, is convenient to gas delivery and is mixed; Opacifying power, Plastic Resin consistency and prescription adaptability are good; The advantages such as have super weathering resistance, gloss retention and yellowing resistance, the white goods of making have the whiteness height, and form and aspect are stable are specially adapted to the production of Masterbatch.
Embodiment
The invention will be further described below in conjunction with specific embodiment.
Embodiment 1:
With deionized water with the aqeous suspension of the undressed titanium dioxide of 300g allotment into about 600g/L, with aqueous sodium hydroxide solution the pH value of aqeous suspension is adjusted to 9.8, the sodium hexametaphosphate solution of adding 0.3%, grind 30min with sand mill, remove sand, then, aqeous suspension is diluted to 300g/L, temperature is raised to 70 ℃, and the character with the sodium metaaluminate aqueous solution in 1 hour adds 2.4g aluminum oxide, slaking 30min, then the character with Tai-Ace S 150 adds the 1.2g aluminum oxide in 1.5 hours, slaking 60min, the pH value of regulating aqeous suspension is 6.5～7.5, then with the mixture slaking of formation 1～2 hour.With suspension slaking 30min, with sulfuric acid the pH value is adjusted to 7.0, slaking 30min.With gained sample filtering, washing, drying, and carry out micronizing.
Embodiment 2:
With deionized water with the aqeous suspension of the undressed titanium dioxide of 300g allotment into about 600g/L, with aqueous sodium hydroxide solution the pH value of aqeous suspension is adjusted to 9.8, the sodium hexametaphosphate solution of adding 0.3%, grind 30min with sand mill, remove sand, then, aqeous suspension is diluted to 300g/L, temperature is raised to 70 ℃, and the character with the sodium metaaluminate aqueous solution in 1 hour adds 5.4g aluminum oxide, slaking 30min, then the character with Tai-Ace S 150 adds the 3.6g aluminum oxide in 1.5 hours, slaking 60min, the pH value of adjustment tax suspension is 6.5～7.5, then with the mixture slaking that forms 1～2 hour.With suspension slaking 30min, with sulfuric acid the pH value is adjusted to 7.0, slaking 30min.With gained sample filtering, washing, drying, pigment carries out micronizing with 0.3% TriMethylolPropane(TMP).
Embodiment 3:
Repeat the processing of embodiment 1, pigment carries out micronizing with 0.3% organosilicon.
Reduced pigment
Use has the commercially available pigment of following characteristics:
Reduced pigment 1: the pigment that adopts the dual coating of sial
Reduced pigment 2: the pigment that adopts the dual coating of zirconium aluminium
Reduced pigment 3: without the pigment of coating
Result's summary of above-described embodiment and Comparative Examples is in following table
Can see that according to above-described embodiment and upper table TiO 2 pigment of the present invention has the dispersed and high temperature tolerance of good oiliness system.
Because the present invention is well suited for realization purpose of the present invention and reaches above-mentioned result and advantage and be those intrinsic character of the present invention.Although those skilled in the art can make many modifications to the present invention, these modifications are included in the scope of the present invention of claims restriction.
Claims (6)
1. the production method of a special titanium white powder pigment for masterbatch is characterized in that comprising the steps:
(1) the titanium dioxide particle with rutile-type joins in the deionized water, and making beating is mixed with the titanium dioxide aqeous suspension, and the concentration of titanium dioxide aqeous suspension is 400～500g/L;
(2) add dispersion agent in the above-mentioned titanium dioxide aqeous suspension for preparing and disperseed 25～35 minutes, percentage ratio meter by weight, described dispersant dosage is 0.05%～1% of titanium dioxide particle; Then this titanium dioxide aqeous suspension is carried out milled processed;
(3) adopt deionized water to be diluted to 250g/L～350g/L through the titanium dioxide aqeous suspension of milled processed, then be heated to 50 ℃～80 ℃ temperature range and keep;
(4) add a certain amount of aluminum compound aqueous solution in the titanium dioxide aqeous suspension after the heating and fully disperse, the calculating principle of the aluminium element add-on in the described aluminum compound aqueous solution is: the weight that percentage ratio meter by weight, whole aluminium elements of adding generate aluminum oxide be in the titanium dioxide aqeous suspension the titanium dioxide particle 1～2%;
(5) keep temperature range in the step (3), the pH value of using pH adjusting agent will add the titanium dioxide aqeous suspension of aluminium element is adjusted between 4～11, by adjusting pH with the form precipitation of aluminium with aluminum oxide, reacted 6～8 hours, and made the titanium dioxide particle surface form one deck alumina-coated layer;
(6) keep temperature range in the step (3), adopt pH adjusting agent that the pH value of above-mentioned titanium dioxide aqeous suspension is adjusted to neutrality, recurring 1～2 hour, to the titanium white powder pigment aqeous suspension filter, wash, drying, obtain the titanium white powder pigment particle;
(7) add organosilicon in the titanium white powder pigment particle that obtains afterwards to drying, carry out micronizing and organic process and coat operation, percentage ratio meter by weight, the content of described aluminum oxide is 1.0～2.0% of titanium dioxide particle, and described organosilyl add-on is 0.3～0.5% of titanium dioxide particle.
2. the production method of special titanium white powder pigment for masterbatch as claimed in claim 1, it is characterized in that: in step (2), the dispersion agent of adding is phosphoric acid salt or silicate.
3. the production method of special titanium white powder pigment for masterbatch as claimed in claim 1, it is characterized in that: in step (3), the titanium dioxide aqeous suspension after the dilution is heated to 50～60 ℃.
4. the production method of special titanium white powder pigment for masterbatch as claimed in claim 1, it is characterized in that: in step (4), the aluminum compound in the aluminum compound solution is the mixture of one or more materials in Tai-Ace S 150, sodium metaaluminate or all the other the hydrolyzable aluminum compounds.
5. the production method of special titanium white powder pigment for masterbatch as claimed in claim 1, it is characterized in that: in step (5) and (6), the pH adjusting agent of using is aqueous sodium hydroxide solution or dilute sulfuric acid aqueous solution.
6. the production method of special titanium white powder pigment for masterbatch as claimed in claim 2, it is characterized in that: described phosphoric acid salt is Sodium hexametaphosphate 99, described silicate is water glass.
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102226043B (en) * | 2011-04-20 | 2014-01-01 | 宁波新福钛白粉有限公司 | Preparation method of titanium pigment used in ship paint |
| CN102816459A (en) * | 2012-08-15 | 2012-12-12 | 江苏贝丽得珠光颜料有限公司 | Anti-yellowing pearlescent pigment and application thereof |
| CN103694745A (en) * | 2014-01-15 | 2014-04-02 | 河南佰利联化学股份有限公司 | Inorganic-organic surface treatment method for rutile titanium dioxide |
| CN104194409A (en) * | 2014-08-13 | 2014-12-10 | 攀钢集团钛业有限责任公司 | High-temperature-resistant titanium white, and preparation method and application thereof |
| CN105602293B (en) * | 2015-12-24 | 2018-06-26 | 常州大学 | A kind of preparation method of high stability zinc-titanium composite mortar |
| CN107501608B (en) * | 2017-09-20 | 2019-06-18 | 阜南县鲲鹏塑业科技有限公司 | A kind of inorganic coating modified titanium as plastic products filler |
| CN107936622A (en) * | 2017-11-30 | 2018-04-20 | 广西雅照钛白有限公司 | A kind of titanium white powder pigment and preparation method thereof |
| CN109111764A (en) * | 2018-08-30 | 2019-01-01 | 浙江天泰新材料科技有限公司 | Nano-powder titanium dioxide coating new material and preparation method thereof |
| 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 |
| CN110157219B (en) * | 2019-06-26 | 2021-07-06 | 河南佰利联新材料有限公司 | Preparation method of special titanium dioxide for high-performance color master batch |
| EP4045600A1 (en) * | 2019-10-18 | 2022-08-24 | Ineos Pigments USA Inc. | Pigment with enhanced durability and plastic materials made therewith |
| CN112375403A (en) * | 2020-11-04 | 2021-02-19 | 沪本新材料科技（上海）有限公司 | Process for preparing liquid titanium dioxide for producing terylene |
| CN114437566A (en) * | 2022-03-03 | 2022-05-06 | 河南凌宝新材料科技有限公司 | Anti-yellowing pearlescent pigment and preparation method thereof |
| CN115260794A (en) * | 2022-07-26 | 2022-11-01 | 江苏镇钛化工有限公司 | Titanium dioxide special for high-bulk-density color master batch and processing technology thereof |
| CN116041982A (en) * | 2022-12-15 | 2023-05-02 | 宜宾天原海丰和泰有限公司 | Inorganic coating method for titanium dioxide |
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| CN101204671A (en) * | 2006-12-22 | 2008-06-25 | 中国石油大学(北京) | Process for preparing titanium dioxide-alumina compound oxide |
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Effective date of registration: 20191008 Address after: 243000 Anhui city of Ma'anshan province at Xinhua Economic Development Zone, Road No. 1 Patentee after: Anhui Venus Titanium White (Group) Co., Ltd. Address before: 214194 Beizhen Jing Zhang Jing Industrial Zone, Xishan District, Jiangsu, Wuxi Patentee before: Wuxi Haopu Titanium Co., Ltd. |
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