CN101418141A - Low oil absorption ferric oxide yellow pigment - Google Patents
Low oil absorption ferric oxide yellow pigment Download PDFInfo
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- CN101418141A CN101418141A CNA200810235786XA CN200810235786A CN101418141A CN 101418141 A CN101418141 A CN 101418141A CN A200810235786X A CNA200810235786X A CN A200810235786XA CN 200810235786 A CN200810235786 A CN 200810235786A CN 101418141 A CN101418141 A CN 101418141A
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- oxide yellow
- ferric oxide
- iron oxide
- oil absorption
- low oil
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Abstract
The invention discloses ferric oxide yellow pigment with low oil absorption, wherein ferric oxide yellow is obtained by means of wet-method sulfate oxidation, and the dense ferric oxide yellow is crushed to obtain the ferric oxide yellow pigment, wherein the ferric oxide yellow is obtained by means of wet-method sulfate oxidation and then dried, and ferric oxide yellow powder is subjected to densification treatment. In the technology, the product is obtained by acquisition of the ferric oxide yellow by means of wet-method sulfate oxidation, drying, densification of the powder and crushing of the dense ferric oxide yellow. The technology can manufacture the ferric oxide yellow pigment with low oil absorption, and more importantly no organic chemical substance is added during the manufacturing process; and the equipment adopted by the method is wide, simple and easy to operate.
Description
Technical field
The present invention relates to a kind of pigment, be specifically related to a kind of ferric oxide yellow pigment of in mill base and coating, using, be suitable for the water-borne coatings mill base or the oil pastes of high density.
Background technology
Iron oxide yellow is a kind of important inorganic color(ed)pigment.Chemical molecular formula is Fe2O3.H2O or FeOOH.Color and luster has distinct pure ochre yellow, has good tinting strength and remarkable opacifying power.Simultaneously also fast light, alkaline-resisting, acidproof.These performances make it have broad applicability.
Industrial extensive employing wet method oxide sulfate method production iron oxide yellow (USP1327061, USP1368748).This technology has two steps usually: the first step is that ferrous and bubbling air oxidation prepares crystal seed with alkali (normally sodium hydroxide solution) sulfate precipitate in 20-50 centigradetemperatures.Then with air, iron sheet and crystal seed are in the ferrous sulfate medium, making ferrous and airborne oxygen effect generate ferric iron is deposited on the crystal seed, separate out sulfuric acid simultaneously, ferrous sulfate is produced in reaction with iron sheet, through constantly oxidation, different by the pigment mass of selected condition and requirement, the reaction times can be tens hours to several days.Reaction finishes and removes impurity and coarse grain with sieve, washes with water and removes water-soluble salt, carries out drying with drying room or banded moisture eliminator, pulverizes with pulverizer then and obtains ferric oxide yellow pigment.The iron oxide yellow crystalline form that obtains owing to this technology is acicular particles, and acicular particles a lot of branches of formation in the reaction growth process, has increased the specific surface of particle, so its oil number is very high, generally at 30-45g/100g.This aqueous color paste or oil pastes to compounding high concentration is a difficult problem.By in the production process to the control of chemical reaction condition, the major-minor axis ratio that reduces the iron oxide yellow acicular particles is to realize.But well-known, the optical property of ferric oxide yellow pigment not only depends on granular size, also depends on the major-minor axis ratio of acicular particles.The shape of particle has influence on the color of pigment.Aforesaid method may solve the high problem of oil number, but skew has taken place color simultaneously.Therefore it is unaccommodated preparation being had the mill base of strict demand and coating to aberration.
Summary of the invention
The objective of the invention is in order to overcome the shortcoming of the ferric oxide yellow pigment existence of generally in mill base and coating, using at present, provide a series of maintenances original color, the iron oxide yellow kind of low oil absorption ferric replaces common iron oxide yellow, after being used in pigment printing paste, can improve the solid content of mill base, and keep good flowability, stable in the storage time, do not decompose, do not precipitate.
The object of the present invention is achieved like this: a kind of low oil absorption ferric oxide yellow pigment, and the iron oxide yellow that adopts wet method oxide sulfate method to obtain is pulverized closely knit iron oxide yellow then, promptly obtains ferric oxide yellow pigment; Its innovative point is: dry again behind the iron oxide yellow that employing wet method oxide sulfate method obtains, and the iron oxide yellow powder is carried out densification handle.
The treatment process that described iron oxide yellow powder densification is handled can be used cal rolling, also can realize closely knit with screw extrusion.
Closely knit pressure Wei ≧ 200 kg/cm of pressure powder of the processing that described iron oxide yellow powder densification is handled.
The oil number of the iron oxide yellow of described above-mentioned manufacture craft gained is at 20-29g/100g.
The advantage of above technology is: the iron oxide yellow that this process using wet method oxide sulfate method obtains, carry out later on after the powder densification is handled closely knit iron oxide yellow being pulverized at drying step, and obtain this product.Principle of the present invention is that iron oxide yellow has the needle-like crystal particle of branch in the process of rolling, branch has obtained correction, promptly in the post-treatment process, produced Mechanochemical Effect, improved iron oxide yellow particle plane of crystal state, make its oil number at 20-29g/100g, its testing method is according to GB5211.15-88 standard test.
This technology the most important thing is not add any organic chemicals except producing the ferric oxide yellow pigment of low oil absorption ferric in manufacturing processed; And the equipment that the inventive method adopted is extensive, and is simple, easy to operate.The pressure that powder is closely knit is as long as satisfy the above pressure of 200 kg/cm.
Specific embodiment:
The invention will be further described below by embodiment:
The iron oxide yellow that this process using wet method oxide sulfate method obtains carries out later on after the powder densification is handled closely knit iron oxide yellow being pulverized at drying step, obtains this product.
Embodiment 1:
250 kilograms of commercially available common iron oxide yellow (trade names 301), be fed between two pairs of rollers that rotate in opposite directions by feeding device, apply 500MPa pressure by hydraulic efficiency plant, the material that passes through installs circulation thus to carry out for 30 times after densification handles, pulverize with impact grinding, the product that obtains is as follows with the iron oxide yellow test result of handling without densification again:
Embodiment 2:
260 kilograms of commercially available common iron oxide yellow (trade names 311), be fed in the rolling machine by feeding device, the densification that rolled under 1000MPa pressure 60 minutes is handled the back and is pulverized with impact grinding, and the product that obtains is compared as follows with the iron oxide yellow of handling without densification:
More than result relatively shows, the oil number of the ferric oxide yellow pigment of handling through densification is between 20-29g/100g, and the oil number of the ferric oxide yellow pigment of handling without densification obviously increases.
Claims (4)
1, a kind of low oil absorption ferric oxide yellow pigment, the iron oxide yellow that adopts wet method oxide sulfate method to obtain is pulverized closely knit iron oxide yellow then, promptly obtains ferric oxide yellow pigment; It is characterized in that: adopt dry again iron oxide yellow behind the iron oxide yellow that wet method oxide sulfate method obtains, and iron oxide yellow powder densification is handled.
2, a kind of low oil absorption ferric oxide yellow pigment according to claim 1 is characterized in that: the treatment process that described iron oxide yellow powder densification is handled can be used cal rolling, also can realize closely knit with screw extrusion.
3, a kind of low oil absorption ferric oxide yellow pigment according to claim 1 is characterized in that: closely knit pressure Wei ≧ 200 kg/cm of pressure powder of the processing that described iron oxide yellow powder densification is handled.
4, a kind of low oil absorption ferric oxide yellow pigment according to claim 1, it is characterized in that: the oil number of the iron oxide yellow of described above-mentioned manufacture craft gained is at 20-29g/100g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810235786XA CN101418141A (en) | 2008-12-05 | 2008-12-05 | Low oil absorption ferric oxide yellow pigment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810235786XA CN101418141A (en) | 2008-12-05 | 2008-12-05 | Low oil absorption ferric oxide yellow pigment |
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| CN101418141A true CN101418141A (en) | 2009-04-29 |
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| CNA200810235786XA Pending CN101418141A (en) | 2008-12-05 | 2008-12-05 | Low oil absorption ferric oxide yellow pigment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604438A (en) * | 2012-02-21 | 2012-07-25 | 升华集团德清华源颜料有限公司 | Iron oxide yellow pigment with low oil absorption |
| CN102604436A (en) * | 2012-02-21 | 2012-07-25 | 升华集团德清华源颜料有限公司 | Preparation method of low oil absorption iron oxide yellow |
| CN104559331A (en) * | 2014-12-12 | 2015-04-29 | 浙江联合颜料有限公司 | Low-viscosity ferric oxide yellow pigment |
| CN105694538A (en) * | 2016-01-05 | 2016-06-22 | 萧县金鹭纺织品有限公司 | Preparation method of low-oil-absorption-amount anticorrosion iron oxide red pigment |
| CN113105757A (en) * | 2021-04-06 | 2021-07-13 | 湖州师范学院 | Narrow-particle-size-distribution low-oil-absorption iron oxide yellow pigment and preparation method thereof |
| CN113358515A (en) * | 2021-05-26 | 2021-09-07 | 攀钢集团攀枝花钢铁研究院有限公司 | Oil absorption detection method and system |
-
2008
- 2008-12-05 CN CNA200810235786XA patent/CN101418141A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604438A (en) * | 2012-02-21 | 2012-07-25 | 升华集团德清华源颜料有限公司 | Iron oxide yellow pigment with low oil absorption |
| CN102604436A (en) * | 2012-02-21 | 2012-07-25 | 升华集团德清华源颜料有限公司 | Preparation method of low oil absorption iron oxide yellow |
| CN102604436B (en) * | 2012-02-21 | 2013-11-06 | 升华集团德清华源颜料有限公司 | Preparation method of low oil absorption iron oxide yellow |
| CN102604438B (en) * | 2012-02-21 | 2014-09-24 | 升华集团德清华源颜料有限公司 | Iron oxide yellow pigment with low oil absorption |
| CN104559331A (en) * | 2014-12-12 | 2015-04-29 | 浙江联合颜料有限公司 | Low-viscosity ferric oxide yellow pigment |
| CN105694538A (en) * | 2016-01-05 | 2016-06-22 | 萧县金鹭纺织品有限公司 | Preparation method of low-oil-absorption-amount anticorrosion iron oxide red pigment |
| CN113105757A (en) * | 2021-04-06 | 2021-07-13 | 湖州师范学院 | Narrow-particle-size-distribution low-oil-absorption iron oxide yellow pigment and preparation method thereof |
| CN113358515A (en) * | 2021-05-26 | 2021-09-07 | 攀钢集团攀枝花钢铁研究院有限公司 | Oil absorption detection method and system |
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Open date: 20090429 |