CN103333525A - Preparation method of superfine easily-dispersed black iron oxide - Google Patents
Preparation method of superfine easily-dispersed black iron oxide Download PDFInfo
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- CN103333525A CN103333525A CN2013102279819A CN201310227981A CN103333525A CN 103333525 A CN103333525 A CN 103333525A CN 2013102279819 A CN2013102279819 A CN 2013102279819A CN 201310227981 A CN201310227981 A CN 201310227981A CN 103333525 A CN103333525 A CN 103333525A
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- iron oxide
- black iron
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- black
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Abstract
The invention discloses a preparation method of superfine easily-dispersed black iron oxide. In the method, black iron oxide prepared by using a sodium hydroxide oxidation method is adopted, and an undried black iron oxide filter cake is directly used. The preparation method comprises the following steps of: adding dimethicone, calcium lignosulfonate and propylene glycol, wherein the weights of the dimethicone, the calcium lignosulfonate and the propylene glycol are respectively 2-3%, 1.5-2.5% and 1-2% of that of the black iron oxide filter cake; grinding at high speed of 2000-3000rpm for 10-15min; taking out the powder and drying; then, adding a proper amount of water and pulping for 20-25min to prepare slurry with the concentration of 45-55%; adding zinc phosphate, sodium lauryl sulfate and nanosilicon dioxide, wherein the weights of the zinc phosphate, the sodium lauryl sulfate and the nanosilicon dioxide are respectivley 0.3-0.4%, 0.15-0.25% and 0.2-0.3% of that of the slurry; stirring the mixture for 30-40min; grinding the mixture into slurry by using a colloid mill until the particle size is smaller than 45mum; and drying and powdering to obtain a finished product. The preparation method disclosed by the invention not only can be used for improving the surface states of crystals of black iron oxide particles and increasing the fineness of the black iron oxide, but also can be used for improving the dispersibility of a black iron oxide pigment.
Description
Technical field
The present invention relates to the black preparation method of a kind of ultra-fine easy dispersing iron oxide, belong to the chemical color field.
Background technology
Iron pigment is as important inorganic color(ed)pigment, and its annual production occupies first of the inorganic color(ed)pigment.Because the reinforcement of world's environmental consciousness, the inorganic iron series pigments is nontoxic with it, do not have characteristics such as smell, pollution-free constantly replaces plumbous series, the serial poisonous mineral dyes of chromium such as pigment dyestuff and red lead, lead-chrome yellow.Iron oxide black is simple owing to chemical ingredients, nontoxic pollution-free, and chemical stability is strong, is widely used in the building trade paint.Oxidation becomes iron oxide red but iron oxide black will dewater when temperature reaches 100 ℃ of left and right sides.Under the higher occasion of some temperature, use iron oxide black, will fade, phenomenon such as variable color, thereby limited the use range of iron oxide black.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, provide a kind of ultra-fine easy dispersing iron oxide black preparation method.The iron oxide black fineness that this preparation method produces is good, and high thermal resistance is good, and is dispersed superior.
The technical solution used in the present invention is as follows:
The preparation method that a kind of ultra-fine easy dispersing iron oxide is black, the iron oxide black that adopts the sodium hydroxide oxidation style to make, directly use the not iron oxide black filter cake of oven dry, add and be equivalent to the dimethyl silicone oil that iron oxide black filter cake weight adds 2-3%, the calcium lignin sulphonate of 1.5-2.5% and the propylene glycol of 1-2%, 2000-3000rpm ground at a high speed 10-15 minute, take out the oven dry back and add an amount of water making beating 20-25 minute, make the slurries that concentration is 45-55%, and the zinc phosphate of adding slurry weight 0.3-0.4%, the sodium laurylsulfate of 0.15-0.25%, the nano silicon of 0.2-0.3%, stirred 30-40 minute, again by the colloidal mill defibrination to particle diameter less than 45 μ m, oven dry is beaten powder and is finished product.
Beneficial effect of the present invention:
The present invention adopts dimethyl silicone oil, calcium lignin sulphonate and propylene glycol to carry out the high speed milled processed, can improve iron oxide black particle plane of crystal state effectively, improves the fineness of iron oxide black; Dimethyl silicone oil can increase the dispersiveness of iron oxide black greatly.
The present invention has also adopted zinc phosphate, sodium laurylsulfate, nano silicon that organic coated processing has been carried out on the iron oxide black surface, its surface of passivation, improve the resistance toheat of iron oxide black with this, also improved the mobile and dispersed of black iron oxide pigment simultaneously; The iron oxide black that the present invention produces has superior heat resistance, well acidproof, alkaline-resisting and characteristics such as light absorptive is strong, tinting strength is high, consistency is good, good dispersity.
Embodiment
The preparation method that a kind of ultra-fine easy dispersing iron oxide is black, the iron oxide black that adopts the sodium hydroxide oxidation style to make, directly use the not oxidation filter cake of oven dry, add the dimethyl silicone oil that is equivalent to iron oxide black filter cake weight adding 2%, 2 calcium lignin sulphonate and 1.5% propylene glycol, 3000rpm ground at a high speed 10-minute, take out the oven dry back and add an amount of water making beating 25 minutes, make concentration and be 55% slurries, and the zinc phosphate of adding slurry weight 0.3%, 0.2% sodium laurylsulfate, 0.2% nano silicon, stirred 30 minutes, again by the colloidal mill defibrination to particle diameter less than 45 μ m, oven dry is beaten powder and is finished product.
Iron oxide black product performance analysis data such as following table that present embodiment is produced:
Project | Index | Detected result |
Fe 2O 3Content (%) | ≥85 | ?90.8 |
105 ℃ of volatile matters (%) | ≤1.0 | 0.66 |
Oil number (%) | 15-25 | 21.4 |
Tinctorial strength (%) | 95-105 | 97.6 |
Anti-200 ℃/30min (△ E) | ≤1.0 | 0.77 |
Claims (1)
1. the black preparation method of a ultra-fine easy dispersing iron oxide, it is characterized in that: the iron oxide black that adopts the sodium hydroxide oxidation style to make, directly use the not iron oxide black filter cake of oven dry, add and be equivalent to the dimethyl silicone oil that iron oxide black filter cake weight adds 2-3%, the calcium lignin sulphonate of 1.5-2.5% and the propylene glycol of 1-2%, 2000-3000rpm ground at a high speed 10-15 minute, take out the oven dry back and add an amount of water making beating 20-25 minute, make the slurries that concentration is 45-55%, and the zinc phosphate of adding slurry weight 0.3-0.4%, the sodium laurylsulfate of 0.15-0.25%, the nano silicon of 0.2-0.3%, stirred 30-40 minute, again by the colloidal mill defibrination to particle diameter less than 45 μ m, oven dry is beaten powder and is finished product.
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CN201310227981.9A CN103333525B (en) | 2013-06-08 | 2013-06-08 | Preparation method of superfine easily-dispersed black iron oxide |
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CN103333525A true CN103333525A (en) | 2013-10-02 |
CN103333525B CN103333525B (en) | 2014-11-26 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103665949A (en) * | 2013-11-04 | 2014-03-26 | 铜陵市镜铁粉厂 | Preparation method of iron oxide black for polishing agent |
CN104031423A (en) * | 2014-04-24 | 2014-09-10 | 铜陵市陵阳化工有限责任公司 | Preparation method for high temperature-resistant coated iron oxide black |
CN105131653A (en) * | 2015-07-25 | 2015-12-09 | 铜陵瑞莱科技有限公司 | Iron oxide black pigment used for printing ink and preparation method thereof |
CN109486241A (en) * | 2018-11-19 | 2019-03-19 | 岳西县邦玉铁系颜料有限公司 | A kind of iron oxide pigment that tinting strength, tinting power is well easily dispersed |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101691456A (en) * | 2009-10-20 | 2010-04-07 | 杭州萧湘颜料化工有限公司 | Iron oxide black granular pigment and preparation method thereof |
CN101824236A (en) * | 2010-04-29 | 2010-09-08 | 南通宝聚颜料有限公司 | Preparation process of medium temperature resistant iron oxide black |
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2013
- 2013-06-08 CN CN201310227981.9A patent/CN103333525B/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101691456A (en) * | 2009-10-20 | 2010-04-07 | 杭州萧湘颜料化工有限公司 | Iron oxide black granular pigment and preparation method thereof |
CN101824236A (en) * | 2010-04-29 | 2010-09-08 | 南通宝聚颜料有限公司 | Preparation process of medium temperature resistant iron oxide black |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103665949A (en) * | 2013-11-04 | 2014-03-26 | 铜陵市镜铁粉厂 | Preparation method of iron oxide black for polishing agent |
CN104031423A (en) * | 2014-04-24 | 2014-09-10 | 铜陵市陵阳化工有限责任公司 | Preparation method for high temperature-resistant coated iron oxide black |
CN104031423B (en) * | 2014-04-24 | 2015-12-02 | 安徽陵阳新材料有限公司 | A kind of preparation method of high temperature resistant cladded type iron oxide black |
CN105131653A (en) * | 2015-07-25 | 2015-12-09 | 铜陵瑞莱科技有限公司 | Iron oxide black pigment used for printing ink and preparation method thereof |
CN109486241A (en) * | 2018-11-19 | 2019-03-19 | 岳西县邦玉铁系颜料有限公司 | A kind of iron oxide pigment that tinting strength, tinting power is well easily dispersed |
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