CN104528832A - Method for preparing transparent iron oxide yellow pigment - Google Patents
Method for preparing transparent iron oxide yellow pigment Download PDFInfo
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- CN104528832A CN104528832A CN201410822939.6A CN201410822939A CN104528832A CN 104528832 A CN104528832 A CN 104528832A CN 201410822939 A CN201410822939 A CN 201410822939A CN 104528832 A CN104528832 A CN 104528832A
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Abstract
The invention relates to a method for preparing a transparent iron oxide yellow pigment. The method comprises the following steps of stirring at room temperature, under the protection of introduced nitrogen, dropwise adding a FeSO4 solution into a NaOH solution, after the adding is completed, at a slightly higher temperature, 600-800r/min and Qair being equal to 3-5L/min, introducing air, oxidizing for 1-3 hours, stopping the introduction of air, reducing the stirring speed to 400-500r/min, adding a surfactant, slowly adjusting pH to 6 with diluted sulfuric acid, further stirring for 1-2 hours to obtain a slurry, filtering the slurry, washing and drying at 40-50 DEG C to obtain the iron oxide yellow pigment finished product. According to the method for preparing the transparent iron oxide yellow pigment, a crystal seed is not needed to be prepared to directly reach the requirements of a standard transparent iron oxide product in China chemical industry and meanwhile, the method has the advantages of simplicity in process and low production cost.
Description
Technical field
The invention belongs to pigment technology field, relate to a kind of preparation method of transparent yellow iron oxide pigments.
Background technology
The chemical formula of transparent yellow iron oxide (also known as saturating iron oxide yellow) is alpha-feooh, is the iron pigment that a kind of particle diameter is less than that 100nm has dispersiveness very well in transparent medium.Saturating iron oxide yellow pigments particle is according to the difference of preparation method, and can present needle-like, fusiform and ball shape, needle-like there will be sheen effect, with fusiform and spherical be good.Transparent iron oxide pigment has very strong coloring effect, and the ability of good weathering resistance, photostabilization and good absorption and shielding ultraviolet rays, makes it be widely used in the fields such as transparent plastics, superior automobile finish paint, woodwork coating, food colorant.
Prepare the industrial conventional method of transparent yellow iron oxide and have air oxidation process, sodium chlorate oxidation style, iron carbonyl oxidation style and peptisation.Air oxidation process and sodium chlorate oxidation style be with ferrous sulfate and sodium hydroxide be raw material, the low but quality product of production cost is difficult to control; The good product quality that iron carbonyl oxidation style and peptisation are produced, but production cost is high.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of technique simple, the preparation method of the transparent yellow iron oxide pigments that production cost is low.
For achieving the above object, the invention provides following technical scheme:
A preparation method for transparent yellow iron oxide pigments, comprises the steps:
Under stirring at normal temperature leads to nitrogen protection, by FeSO
4solution joins in NaOH solution, after adding, under omiting high-temperature, 600 ~ 800r/min, Qair=3 ~ 5L/min, blowing air oxidation 1 ~ 3h, then stops passing into air, reduces stirring velocity to 400 ~ 500r/min, add tensio-active agent, then slowly adjust pH to 6 with dilute sulphuric acid, continue stirring 1 ~ 2h, gained slip after filtration, after washing 40 ~ 50 DEG C dry to obtain iron oxide yellow finished product.
Preferably, FeSO is added
4after solution, under omiting high-temperature, 700r/min, Qair=4L/min, blowing air oxidation 2h.
Preferably, reduce stirring velocity to 450r/min, add tensio-active agent.
Preferably, slowly adjust pH to 6 with dilute sulphuric acid, continue to stir 1.5h.
Preferably, gained slip after filtration, wash latter 45 DEG C and dry to obtain iron oxide yellow finished product.
The preparation method of transparent yellow iron oxide pigments of the present invention, does not need to prepare crystal seed, and directly the obtained transparent Indium iron product reaching China's chemical industry standard, has technique simple, the advantage that production cost is low simultaneously.
Embodiment
Be described in detail to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
Embodiment 1
Under stirring at normal temperature leads to nitrogen protection, by FeSO
4solution joins in NaOH solution, after adding, under omiting high-temperature, 600r/min, Qair=3L/min, blowing air oxidation 3h, then stops passing into air, reduces stirring velocity to 400r/min, add tensio-active agent, then slowly adjust pH to 6 with dilute sulphuric acid, continue to stir 2h, gained slip after filtration, wash latter 40 DEG C and dry to obtain iron oxide yellow finished product.
Embodiment 2
Under stirring at normal temperature leads to nitrogen protection, by FeSO
4solution joins in NaOH solution, after adding, under omiting high-temperature, 800r/min, Qair=5L/min, blowing air oxidation 1h, then stops passing into air, reduces stirring velocity to 500r/min, add tensio-active agent, then slowly adjust pH to 6 with dilute sulphuric acid, continue to stir 1h, gained slip after filtration, wash latter 50 DEG C and dry to obtain iron oxide yellow finished product.
Embodiment 3
Under stirring at normal temperature leads to nitrogen protection, by FeSO
4solution joins in NaOH solution, after adding, under omiting high-temperature, 700r/min, Qair=4L/min, blowing air oxidation 2h, then stops passing into air, reduces stirring velocity to 450r/min, add tensio-active agent, then slowly adjust pH to 6 with dilute sulphuric acid, continue to stir 1.5h, gained slip after filtration, wash latter 45 DEG C and dry to obtain iron oxide yellow finished product.
In those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.
In addition, be to be understood that, although this specification sheets is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of specification sheets is only for clarity sake, those skilled in the art should by specification sheets integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (5)
1. a preparation method for transparent yellow iron oxide pigments, is characterized in that, comprises the steps:
Under stirring at normal temperature leads to nitrogen protection, by FeSO
4solution joins in NaOH solution, after adding, under omiting high-temperature, 600 ~ 800r/min, Qair=3 ~ 5L/min, blowing air oxidation 1 ~ 3h, then stops passing into air, reduces stirring velocity to 400 ~ 500r/min, add tensio-active agent, then slowly adjust pH to 6 with dilute sulphuric acid, continue stirring 1 ~ 2h, gained slip after filtration, after washing 40 ~ 50 DEG C dry to obtain iron oxide yellow finished product.
2. the preparation method of transparent yellow iron oxide pigments according to claim 1, is characterized in that: add FeSO
4after solution, under omiting high-temperature, 700r/min, Qair=4L/min, blowing air oxidation 2h.
3. the preparation method of transparent yellow iron oxide pigments according to claim 1, is characterized in that: reduce stirring velocity to 450r/min, add tensio-active agent.
4. the preparation method of transparent yellow iron oxide pigments according to claim 1, is characterized in that: slowly adjust pH to 6 with dilute sulphuric acid, continues to stir 1.5h.
5. the preparation method of transparent yellow iron oxide pigments according to claim 1, is characterized in that: gained slip after filtration, wash latter 45 DEG C and dry to obtain iron oxide yellow finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410822939.6A CN104528832A (en) | 2014-12-26 | 2014-12-26 | Method for preparing transparent iron oxide yellow pigment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410822939.6A CN104528832A (en) | 2014-12-26 | 2014-12-26 | Method for preparing transparent iron oxide yellow pigment |
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| CN104528832A true CN104528832A (en) | 2015-04-22 |
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| CN201410822939.6A Pending CN104528832A (en) | 2014-12-26 | 2014-12-26 | Method for preparing transparent iron oxide yellow pigment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107418253A (en) * | 2017-06-16 | 2017-12-01 | 浙江正奇世荣科技有限公司 | A kind of preparation method of nano transparent ferric oxide composite pigment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663568A (en) * | 2013-11-20 | 2014-03-26 | 青岛文创科技有限公司 | Transparent iron oxide yellow production process |
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2014
- 2014-12-26 CN CN201410822939.6A patent/CN104528832A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663568A (en) * | 2013-11-20 | 2014-03-26 | 青岛文创科技有限公司 | Transparent iron oxide yellow production process |
Non-Patent Citations (1)
| Title |
|---|
| 李仕雄等: "透明氧化铁黄颜料制备的新工艺研究", 《湖南有色金属》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107418253A (en) * | 2017-06-16 | 2017-12-01 | 浙江正奇世荣科技有限公司 | A kind of preparation method of nano transparent ferric oxide composite pigment |
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Application publication date: 20150422 |