CN102926274A - Composite titanium dioxide special for papermaking and preparation method thereof - Google Patents
Composite titanium dioxide special for papermaking and preparation method thereof Download PDFInfo
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- CN102926274A CN102926274A CN2012104501236A CN201210450123A CN102926274A CN 102926274 A CN102926274 A CN 102926274A CN 2012104501236 A CN2012104501236 A CN 2012104501236A CN 201210450123 A CN201210450123 A CN 201210450123A CN 102926274 A CN102926274 A CN 102926274A
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- titanium dioxide
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- barium sulfate
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Abstract
The invention discloses composite titanium dioxide special for papermaking and a preparation method thereof. The composite titanium dioxide special for papermaking is manufactured by 20% to 50% barium sulfate powder body, 5% to 20% aluminum silicate powder body, 30% to 70% titanium dioxide powder body and 2% to 10% dispersant by weight. First of all, the barium sulfate coarse powder and aluminum silicate coarse powder are quantitatively fed and grinded to 4000 meshes. Semi-finished products after grinded is separated through cyclone, powder materials greater than 4000 meshes is sent back to continue to be grinded, and powder materials equal to or less than 4000 meshes are added into the titanium dioxide powder body to be sufficiently stirred. Powder material air evenly stirred is transported to a second cyclone separator, and at the same time quantitative dispersant is wind into the second cyclone separator through the form of a spray to be mixed with the powder materials evenly stirred. The resultant materials form the end product after drying. The price of the composite titanium dioxide special for papermaking is much cheaper than products of same type, and the quality of the composite titanium dioxide special for papermaking is superior to the products of same type. As an additive, the composite titanium dioxide special for papermaking greatly reduces production cost of papermaking.
Description
Technical field
The present invention relates to composite titanium dioxide, be specifically related to a kind of papermaking specific complex titanium dioxide and preparation method thereof.
Background technology
Range of application is very extensive as Chinese white for titanium dioxide (also claiming titanium dioxide), and papermaking is the third-largest user of titanium dioxide.Because considering that production cost generally can not use titanium dioxide, mainly use china clay, talcum powder, calcium carbonate etc. in the low-grade paper, but they can reduce the intensity of paper, the weight of increase paper.Must use titanium dioxide in facing paper, Bible paper and the bank note (as: dictionary, magazine, journal surface, computer, banknote, copy paper and facing paper etc.), use the Paper White Degree of titanium dioxide good, intensity is high, do not penetrate during glossy, thin and smooth, printing, opacity is higher 10 times than use calcium carbonate, talcous paper under the same conditions, and weight also can alleviate 15% ~ 30%.
Because the cost ratio of titanium dioxide in papermaking be up to 30～50%, so the paper mill satisfying under the prerequisite of quality requirement, worries about petty gain or loss selecting titanium dioxide can be described as.The dioxide composite titanium products possesses higher cost performance, is subject to the market favor.At present, the dioxide composite titanium products on the market is a lot, but determines that the basic parameter of its performance remains the content of titanium dioxide, and the content of titanium dioxide height can be enhanced product performance, and has improved accordingly cost, has increased the papermaking cost, has affected economic benefit.
Summary of the invention
It is low that technical problem to be solved by this invention provides a kind of price, the measured papermaking specific complex of matter titanium dioxide.The preparation method of this composite titanium dioxide also is provided.
For solving the problems of the technologies described above, papermaking specific complex titanium dioxide of the present invention, by weight, made by following material:
Barium sulfate powder: 20 ﹪-50 ﹪, aluminum silicate powder: 5 ﹪-20 ﹪, titanium dioxide powder: 30 ﹪-70 ﹪, dispersant: 2 ﹪-10 ﹪.
Dispersant uses a kind of in silane coupler, silicone oil, organically-modified silicone oil or TM-No. 950 dispersant.
TM among the present invention-No. 950 dispersant is raised the chemical plant by sky, Yizheng City, Jiangsu and is produced.Its main component is poly(silicon aether) and silanol, and its molecule is centered by silicon atom, carries the organic polymer of the groups such as hydroxyl, ether, ester group.Be brown thick liquid in shape, relative density 1.05 in the time of 25 ℃, (open flash point)＞65 ℃, and pH value 2～3, dispersion temperature＞280 ℃ are applicable to inorganic pigment, and the dispersion of organic pigment has good moistening dispersiveness.Can shorten milling time, prevent precipitation, prevent floating.
Further, for improving the quality of products, barium sulfate quality index in the raw material should meet following requirement: whiteness will reach 92-96, the oil factor index is not more than 15mg/100g, purity reaches more than 95 ﹪, and sulfide content should be lower than 0.13 ﹪, and FeO content is lower than 0.04 ﹪, pH value is between 6-8, and 105 ℃ of volatile matters are less than 0.3 ﹪.
Further, the alumina silicate index in the raw material should meet following requirement: whiteness is not less than 90, and purity reaches more than 95 ﹪, and pH value is between 8-10, and the oil factor index is not more than 15mg/100g.
Further, the titanium dioxide powder index in the raw material should meet following requirement: use rutile-type TIO
2Powder, its TIO
2Content requirement is not less than 91 ﹪, and whiteness reaches more than 96 ﹪, and the tinting strength, tinting power index is not less than 180,105 ℃ of volatile matters and is not more than 0.2 ﹪, oil absorption 12.5 g/100g.Water slurry pH value about 8.1.Residue on sieve 45um sieve is not more than 0.01, hiding power value 22.
The preparation method of papermaking specific complex titanium dioxide provided by the invention may further comprise the steps:
(1) barium sulfate, alumina silicate meal are quantitatively fed intake is ground to 4000 orders;
(2) semi-finished product after will grinding carry out cyclonic separation by the first cyclone separator, return greater than 4000 purpose powders again and continue to grind, and are less than or equal to 4000 purpose powders and add titanium dioxide powder and fully stir;
(3) powder wind after stirring is delivered to the second cyclone separator, sends into quantitative dispersant to the second cyclone separator by the mode wind of spraying simultaneously, mixes with powder after stirring;
(4) get finished product behind the dry materials of above-mentioned (3) step gained.
Useful technique effect of the present invention is embodied in:
1) covering power is high.
Papermaking specific complex titanium dioxide of the present invention reacts in mixed process, and its particle is take barium sulfate as nuclear, the surface coats the titanium dioxide of one deck rutile-type, pass through again surperficial sial and organic surface treatment, thereby have good covering power, can also improve gloss and whiteness.After testing, its covering power reaches 33g/m
2, whiteness reaches 97.04.
2) good dispersion.
Papermaking specific complex titanium dioxide of the present invention, its particle fineness can reach below the 10 μ m, can help Pigments, reduces amount of pigment, shortens milling time, saves cost.
4) good weatherability.
Papermaking specific complex titanium dioxide of the present invention uses rutile titanium dioxide as one of base-material, possesses good weather resistance.
5) low bubble property.
The present invention has used and has selected TM-No. 950 dispersant, and its foam stability is low, than being easier to Natural Ruptures.And to eliminating because there is the foam that produces in air good effect is arranged.In the paper-making process, the bubble Natural Ruptures, the phenomenons such as the pore of minimizing paper finished product, gauffer improve quality of finished paper.
6) wettability is high, the paper retention is high.
The present invention has used silane coupler, silicone oil or organically-modified silicone oil as dispersant.This dispersant can reduce surface tension significantly as surfactant, makes titanium dioxide in some difficult wetting surperficial quick humidification and dispersion, helps titanium dioxide to be penetrated in the tissue of paper fiber and goes, and improves wettability and paper retention.
7) cost is low.
Papermaking specific complex titanium dioxide of the present invention adds dispersant and carries out making after the spray drying take barium sulfate, alumina silicate, titanium dioxide as raw material, and content of titanium dioxide is 30 ﹪-70 ﹪, under the prerequisite of ensuring the quality of products, has reduced cost.Papermaking specific complex titanium dioxide of the present invention can substitute high-purity titanium dioxide as additive for paper making simultaneously, greatly reduces the papermaking cost.
8) preparation method of papermaking specific complex titanium dioxide of the present invention, it is broken to 4000 orders with barium sulfate, titanium dioxide, aluminium silicate powder, again with dispersant, in mixed process, with the spray pattern feed, mixes, and is swift in response, fully.
9) papermaking specific complex titanium dioxide of the present invention more than various material disintegrating to 4000 orders, reaches the nanometer materials requirement; Alumina silicate after the pulverizing can be realized the inorganic coating to raw material, improves the performances such as pigment gloss, durability, end phase, covering power; In the dispersant, hydroxyl/ether on siloxy group in the organosilicon macromolecule and the hydrogen bond chemisorbed between the titanium dioxide and the organosilicon molecule and the hydroxyl on titanium dioxide surface carry out chemical condensation reaction or substitution reaction, form on the surface of titanium dioxide very evenly, fine and close and organosilicon rete firmly.The intergranular polarity absorption of titanium dioxide can be eliminated or weaken to this rete, forms simultaneously steric hindrance functional group between the titanium dioxide particle, prevents the reunion of titanium dioxide particle; This rete also has good lubricity, weatherability, and heat endurance and subsequent reactions can obviously improve the moisture dispersibility energy of titanium dioxide in various decentralized media, can also increase the photochemical stability of titanium dioxide.
The specific embodiment
Embodiment 1
Barium sulfate 20 kg, alumina silicate 5 kg, titanium dioxide 70kg, silane coupler 5 kg.
Embodiment 2
Barium sulfate 40 kg, alumina silicate 10 kg, titanium dioxide 40 kg, silicone oil 10 kg.
Embodiment 3
Barium sulfate 20 kg, alumina silicate 8 kg, titanium dioxide 70 kg, organically-modified silicone oil 2kg.
Embodiment 4
Barium sulfate 25 kg, alumina silicate 20 kg, titanium dioxide 50 kg, TM-No. 950 dispersant 5 kg.
The preparation method of embodiment 1-4 is:
(1) barium sulfate, alumina silicate meal are quantitatively fed intake is ground to 4000 orders;
(2) semi-finished product after will grinding carry out cyclonic separation by the first cyclone separator, return greater than 4000 purpose powders again and continue to grind, and are less than or equal to 4000 purpose powders and add titanium dioxide powder and fully stir;
(3) powder wind after stirring is delivered to the second cyclone separator, sends into quantitative dispersant to the second cyclone separator by the mode of spraying simultaneously, mixes with powder after stirring;
(4) pack to get finished product behind the dry materials of above-mentioned (3) step gained.
Above embodiment products obtained therefrom meets following index after testing:
| Sequence number | Interventions Requested | Assay | The method of inspection |
| 1 | The dry powder whiteness | 97.04 | GB/T 5211.20-1999 |
| 2 | Oil absorption, g/100g | 21 | GB/T 5211.15-1988 |
| 3 | Covering power, g/m 2 | 33 | HG/T 3851-2006 |
| 4 | Water slurry pH (19 ℃) | 8.5 | GB/T 1717-1986 |
| 5 | Residue on sieve, % | ＜0.01 | GB/T 5211.14-1988 |
Claims (4)
1. papermaking specific complex titanium dioxide, by weight, made by following material:
Barium sulfate powder: 20 ﹪-50 ﹪, aluminum silicate powder: 5 ﹪-20 ﹪, titanium dioxide powder: 30 ﹪-70 ﹪, dispersant: 2 ﹪-10 ﹪.
2. papermaking specific complex titanium dioxide as claimed in claim 1 is characterized in that: described dispersant refers to a kind of in silane coupler, silicone oil, organically-modified silicone oil or TM-No. 950 dispersant.
3. papermaking specific complex titanium dioxide as claimed in claim 1, it is characterized in that: described barium sulfate quality index is: whiteness will reach 92-96, the oil factor index is not more than 15mg/100g, purity reaches more than 95 ﹪, sulfide content should be lower than 0.13 ﹪, FeO content is lower than 0.04 ﹪, and pH value is between 6-8, and 105 ℃ of volatile matters are less than 0.3 ﹪;
Described alumina silicate index is: whiteness is not less than 90, and purity reaches more than 95 ﹪, and pH value is between 8-10, and the oil factor index is not more than 15mg/100g;
Described titanium dioxide powder is rutile-type TIO
2Powder, its TIO
2Content requirement is not less than 91 ﹪, and whiteness reaches more than 96 ﹪, and the tinting strength, tinting power index is not less than 180,105 ℃ of volatile matters and is not more than 0.2 ﹪, oil absorption 12.5 g/100g, and residue on sieve 45um sieve is not more than 0.01, hiding power value 22.
4. the preparation method of a papermaking specific complex titanium dioxide may further comprise the steps:
(1) barium sulfate, alumina silicate meal are quantitatively fed intake is ground to 4000 orders;
(2) semi-finished product after will grinding are by cyclonic separation, return greater than 4000 purpose powders again and continue to grind, and are less than or equal to 4000 purpose powders and add titanium dioxide powder and fully stir;
(3) powder wind after stirring is delivered to the second cyclone separator, sends into quantitative dispersant to the second cyclone separator by the mode wind of spraying simultaneously, mixes with powder after stirring;
(4) get finished product behind the dry materials of above-mentioned (3) step gained.
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| CN2012104501236A CN102926274A (en) | 2012-11-13 | 2012-11-13 | Composite titanium dioxide special for papermaking and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107308928A (en) * | 2017-07-17 | 2017-11-03 | 中钛化工集团有限公司 | The special titanium dioxide process of emulsion paint |
| CN107503226A (en) * | 2017-09-30 | 2017-12-22 | 成都新柯力化工科技有限公司 | A kind of brilliant idea stays papermaking filler and preparation method thereof |
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| CN101041183A (en) * | 2007-04-29 | 2007-09-26 | 东北轻合金有限责任公司 | Method of processing un-suspension powdered aluminium |
| CN101250336A (en) * | 2008-04-10 | 2008-08-27 | 上海安亿纳米材料有限公司 | Barium sulfate based polybasic composite white pigments and method for preparing same |
| CA2759109A1 (en) * | 2009-04-24 | 2010-10-28 | Iceutica Pty Ltd | A solid dosage form of ciprofloxacin having small particle size and improved powder handling characteristics |
| CN102277067A (en) * | 2011-05-24 | 2011-12-14 | 上海元方涂料有限公司 | Thermosetting weather-resistant low-temperature solidifying powder |
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2012
- 2012-11-13 CN CN2012104501236A patent/CN102926274A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101041183A (en) * | 2007-04-29 | 2007-09-26 | 东北轻合金有限责任公司 | Method of processing un-suspension powdered aluminium |
| CN101250336A (en) * | 2008-04-10 | 2008-08-27 | 上海安亿纳米材料有限公司 | Barium sulfate based polybasic composite white pigments and method for preparing same |
| CA2759109A1 (en) * | 2009-04-24 | 2010-10-28 | Iceutica Pty Ltd | A solid dosage form of ciprofloxacin having small particle size and improved powder handling characteristics |
| CN102277067A (en) * | 2011-05-24 | 2011-12-14 | 上海元方涂料有限公司 | Thermosetting weather-resistant low-temperature solidifying powder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107308928A (en) * | 2017-07-17 | 2017-11-03 | 中钛化工集团有限公司 | The special titanium dioxide process of emulsion paint |
| CN107503226A (en) * | 2017-09-30 | 2017-12-22 | 成都新柯力化工科技有限公司 | A kind of brilliant idea stays papermaking filler and preparation method thereof |
| CN107503226B (en) * | 2017-09-30 | 2019-11-12 | 安徽景丰纸业有限公司 | A kind of brilliant idea stays papermaking filler and preparation method thereof |
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Application publication date: 20130213 |