CN103333525B - 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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- CN103333525B CN103333525B CN201310227981.9A CN201310227981A CN103333525B CN 103333525 B CN103333525 B CN 103333525B CN 201310227981 A CN201310227981 A CN 201310227981A CN 103333525 B CN103333525 B CN 103333525B
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- iron oxide
- black iron
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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 chemical color field.
Background technology
Iron pigment is as important inorganic color(ed)pigment, and its annual production occupies first of inorganic color(ed)pigment.Due to the reinforcement of world's environmental consciousness, inorganic iron series pigments constantly replaces plumbous series, the serial poisonous mineral dyes of chromium such as pigment dyestuff and red lead, lead-chrome yellow with its feature such as nontoxic, odorless, pollution-free.Iron oxide black is because chemical composition is simple, nontoxic pollution-free, and chemical stability is strong, is widely used in building trade paint.But iron oxide black will dewater in the time that temperature reaches 100 DEG C of left and right, oxidation becomes iron oxide red.Under the higher occasion of some temperature, use iron oxide black, will fade, the phenomenon such as variable color, thereby limited the use range of iron oxide black.
Summary of the invention
The object of the invention is to for 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, dispersed superior.
The technical solution used in the present invention is as follows:
The black preparation method of a kind of ultra-fine easy dispersing iron oxide, the iron oxide black that adopts sodium hydroxide oxidation style to make, directly use the iron oxide black filter cake of not drying, 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 speed lapping 10-15 minute, after taking out oven dry, add appropriate water making beating 20-25 minute, make the slurries that concentration is 45-55%, and add the zinc phosphate of slurry weight 0.3-0.4%, the sodium laurylsulfate of 0.15-0.25%, the nano silicon of 0.2-0.3%, stir 30-40 minute, be less than 45 μ m by colloidal mill defibrination to particle diameter again, 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 speed lapping processing, can effectively improve iron oxide black particle plane of crystal state, 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 to carry out organic coated processing to iron oxide black surface, its surface of passivation, the resistance toheat that improves iron oxide black with this, the while has also been improved mobility and the dispersiveness of black iron oxide pigment; The iron oxide black that the present invention produces has superior heat resistance, well acidproof, the alkaline-resisting and feature such as light absorptive is strong, tinting strength is high, consistency is good, good dispersity.
Embodiment
The black preparation method of a kind of ultra-fine easy dispersing iron oxide, the iron oxide black that adopts sodium hydroxide oxidation style to make, directly use the oxidation filter cake of not drying, add and be equivalent to iron oxide black filter cake weight and add 2% dimethyl silicone oil, 2 calcium lignin sulphonate and 1.5% propylene glycol, 3000rpm speed lapping 10-minute, after taking out oven dry, add appropriate water making beating 25 minutes, make concentration and be 55% slurries, and add the zinc phosphate of slurry weight 0.3%, 0.2% sodium laurylsulfate, 0.2% nano silicon, stir 30 minutes, be less than 45 μ m by colloidal mill defibrination to particle diameter again, oven dry is beaten powder and is finished product.
The iron oxide black product performance analysis data that the present embodiment is produced is as following table:
| Project | Index | Detected result |
| Fe 2O 3Content (%) | ≥85 | ?90.8 |
| 105 DEG C of volatile matters (%) | ≤1.0 | 0.66 |
| Oil number (%) | 15-25 | 21.4 |
| Tinctorial strength (%) | 95-105 | 97.6 |
| Resistance to 200 DEG C/30min (△ E) | ≤1.0 | 0.77 |
Claims (1)
1. the black preparation method of ultra-fine easy dispersing iron oxide, it is characterized in that: the iron oxide black that adopts sodium hydroxide oxidation style to make, directly use the iron oxide black filter cake of not drying, add the dimethyl silicone oil that is equivalent to iron oxide black filter cake weight 2-3%, the calcium lignin sulphonate of 1.5-2.5% and the propylene glycol of 1-2%, 2000-3000rpm speed lapping 10-15 minute, after taking out oven dry, add appropriate water making beating 20-25 minute, make the slurries that concentration is 45-55%, and add the zinc phosphate of slurry weight 0.3-0.4%, the sodium laurylsulfate of 0.15-0.25%, the nano silicon of 0.2-0.3%, stir 30-40 minute, be less than 45 μ m by colloidal mill defibrination to particle diameter again, oven dry is beaten powder and is finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310227981.9A CN103333525B (en) | 2013-06-08 | 2013-06-08 | Preparation method of superfine easily-dispersed black iron oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310227981.9A CN103333525B (en) | 2013-06-08 | 2013-06-08 | Preparation method of superfine easily-dispersed black iron oxide |
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| Publication Number | Publication Date |
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| CN103333525A CN103333525A (en) | 2013-10-02 |
| CN103333525B true CN103333525B (en) | 2014-11-26 |
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| CN201310227981.9A Expired - Fee Related CN103333525B (en) | 2013-06-08 | 2013-06-08 | Preparation method of superfine easily-dispersed black iron oxide |
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Families Citing this family (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 |
| 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 |
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
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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 |
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