CN103613112A - Simple preparation method of rare earth carbonate pearlescent pigment - Google Patents
Simple preparation method of rare earth carbonate pearlescent pigment Download PDFInfo
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- CN103613112A CN103613112A CN201310639134.3A CN201310639134A CN103613112A CN 103613112 A CN103613112 A CN 103613112A CN 201310639134 A CN201310639134 A CN 201310639134A CN 103613112 A CN103613112 A CN 103613112A
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Abstract
The invention provides a simple preparation method of a rare earth carbonate pearlescent pigment, and belongs to the field of pearlescent pigments. The preparation method comprises the following steps: mixing a rare earth salt solution and a precipitant solution at room temperature; reacting for a period of time; drying and washing to obtain the pearlescent pigment containing different rare earth. The experimental raw materials adopted in the method have wide sources; the experimental method is simple; the experimental process is environment-friendly; industrialization is facilitated. The pearlescent pigment prepared by the preparation method provided by the invention is high in brightness, non-toxic, small in specific gravity and wide in application, and can completely meet different requirements of different industries such as cosmetics, coating industry, printing ink printing industry, plastic industry and ceramics.
Description
Technical field
The invention belongs to pearly pigment field, relate to a kind of simple preparation method of rare earth carbonate pearly pigment.
Background technology
Rare earth has the good physical propertys such as photoelectromagnetism, is called as industry " VITAMIN ".China's rare earth resources is abundant, and especially the light rare earths of Bayan Obo is particularly abundant, develops new product, and especially high value added product, makes its real being applied to greatest extent, is the direction that Chinese researcher is made great efforts always.
Pearly pigment belongs to high-grade pigment, pearly pigment on market is generally the flaky substances such as natural mica, synthetic mica, glass, silicon-dioxide, aluminium sesquioxide, titanium dioxide or take its single or multiple lift coating that is matrix, and wherein modal is mica titanium nacreous material.Although the material pearlescent effects such as mica are strong, although have the advantages such as color is more, stability is better, pearlescent effect is strong with the product that coated method obtains, its production process is comparatively complicated and experiment condition is comparatively harsh, and relevant practical technology is abroad monopolized substantially.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, the invention provides a kind of preparation method of simple rare earth carbonate pearly pigment.
Rare earth carbonate pearly pigment, it is characterized in that experimental technique is: at room temperature by rare earths salt and precipitant mix, control pH of mixed value and react for some time in certain limit, the rare earth pearly pigment with pearlescent effect is cleaned, is drying to obtain to the precipitation obtaining.Wherein, described raw material is as follows:
Rare earth in described rare-earth salts is the single or mixture of the soluble salts such as La, Ce, Pr and Nd, described precipitation agent is the single or mixture of the soluble salt that contains bicarbonate radical and carbonate, the concentration of rare-earth salts is 0.1-2.0mol/L, and the concentration of precipitation agent is 0.01-1.0mol/L.
Described experiment condition is as follows:
Described rare earths salt and precipitant mix method can be that rare earths salt splashes into precipitant solution or precipitant solution splashes into rare earths salt, described pH value scope is 4.0-10.0, the described reaction times is 1-24 hour, and described drying temperature is room temperature to 200 ℃.
Product chromaticity coordinates of the present invention defines with CIE system xy coordinate and L* ，a* Heb*，You International Commission on Illumination.Concrete grammar is first by JENA SPECORD50/Analytik Jena AG spectrophotometer, to test solid diffuse reflectance spectra, then utilizes software to calculate the chromaticity coordinates value of corresponding product.Test result and outward appearance demonstration, the prepared rare earth pearly pigment of the technology of the present invention has size uniform, and brightness is large, dispersion force is good, the advantages such as toxicological harmless and proportion are little, can be widely used in many industrial circles, and for example makeup, ink, paper, coating, plastic or other material is painted.The experimental raw wide material sources that the present invention relates to, experimental technique is simple, and experimentation environment-friendly and green, is easy to industrialization.
Embodiment
Embodiment 1
Under room temperature, 1.0M cerous nitrate solution splashes into 0.3M sodium hydrogen carbonate solution, keeps pH value of solution=6.0 reaction 24h, the dry white product that obtains at 50 ℃.CIE chromaticity coordinates is: x=0.3149, y=0.3291, L*=96.8568, a*=-2.6683, b*=4.5696.
Embodiment 2
Cerous nitrate solution concentration adopts 0.5M, and cerous nitrate solution concentration adopts 0.15M, and other conditions, with example 1, obtain white product.CIE chromaticity coordinates is: x=0.3167, y=0.3363, L*=105.5826, a*=-5.6702, b*=8.1052.
Embodiment 3
Cerous nitrate solution concentration adopts 0.2M, and cerous nitrate solution concentration adopts 0.08M, and other conditions, with example 1, obtain white product.CIE chromaticity coordinates is:: x=0.3078, y=0.3208, L*=103.4866, a*=-2.3624, b*=0.2172.
Embodiment 4
PH value of solution is controlled at 5.0, and other conditions, with example 1, obtain white product.CIE chromaticity coordinates is: x=0.3143, y=0.3311, L*=96.7745, a*=-3.9625, b*=5.1736.
Embodiment 5
PH value of solution is controlled at 5.5, and other conditions, with example 1, obtain white product.CIE chromaticity coordinates is:: x=0.3168, y=0.3327, L*=97.1683, a*=-3.4901, b*=6.2474.
Embodiment 6
PH value of solution is controlled at 6.5, and other conditions, with example 1, obtain white product.CIE chromaticity coordinates is: x=0.3167, y=0.3334, L*=107.1793, a*=-4.2356, b*=7.0526.
Embodiment 7
PH value of solution is controlled at 7.0, and other conditions, with example 1, obtain white product.CIE chromaticity coordinates is: x=0.3092, y=0.3244, L*=112.7652, a*=-3.7978, b*=2.0589.
Embodiment 8
Reaction times adopts 1h, and other conditions, with example 1, obtain white product.CIE chromaticity coordinates is: x=0.3088, y=0.3245, L*=105.5105, a*=-3.8443, b*=1.9162.
Embodiment 9
Reaction times adopts 3h, and other conditions, with example 1, obtain white product.CIE chromaticity coordinates is: x=0.3118, y=0.3269, L*=107.2163, a*=-3.5123, b*=3.4866.
Embodiment 10
Reaction times adopts 6h, and other conditions, with example 1, obtain white product.CIE chromaticity coordinates is: x=0.3056, y=0.3187, L*=97.3665, a*=-2.3626, b*=-0.9845.
Embodiment 11
Rare-earth salts adopts lanthanum nitrate, and other conditions, with example 1, obtain white product.CIE chromaticity coordinates is: x=0.3010, y=0.3135, L*=107.6334, a*=-2.3331, b*=-4.1186.
Embodiment 12
Rare-earth salts adopts praseodymium nitrate, and other conditions, with example 1, obtain light green product.CIE chromaticity coordinates is: x=0.3127, y=0.3388, L*=108.9185, a*=-9.3556, b*=8.5375.
Embodiment 13
Rare-earth salts adopts neodymium nitrate, and other conditions, with example 1, obtain lavender product.CIE chromaticity coordinates is: x=0.2941, y=0.2971, L*=99.8725, a*=2.9315, b*=-11.6066.
Embodiment 14
Rare-earth salts adopts Lanthanum trichloride, and other conditions, with example 1, obtain white product.CIE chromaticity coordinates is: x=0.3011, y=0.3131, L*=101.6081, a*=-1.9141, b*=-4.0355.
Embodiment 15
Precipitation agent adopts Anhydrous potassium carbonate, and other conditions, with example 1, obtain white product.CIE chromaticity coordinates is: x=0.3075, y=0.3217, L*=106.1863, a*=-3.0715, b*=0.5133.
Above embodiment contributes to the present invention further to understand, and protection scope of the present invention is not subject to the restriction of these embodiment, and protection scope of the present invention is determined by claim.
Claims (11)
1. the simple preparation method of a rare earth carbonate pearly pigment, it is characterized in that, experimental procedure is: at room temperature will be containing rare earths salt and precipitant mix, control pH of mixed value in certain limit, reaction for some time, the rare earth carbonate pearly pigment with pearlescent effect is cleaned, is drying to obtain to the precipitation obtaining.
2. according to the simple preparation method of a kind of rare earth carbonate pearly pigment of claim 1, it is characterized in that, the rare earth in described rare-earth salts is La, Ce, Pr and Nd.
3. according to the simple preparation method of a kind of rare earth carbonate pearly pigment of claim 1, it is characterized in that the nitrate that described rare-earth salts is rare earth, all water-soluble rare-earth saltss such as chlorate.
4. according to the simple preparation method of a kind of rare earth carbonate pearly pigment of claim 1, it is characterized in that, described rare-earth salts can be the mixing salt of single rare earth or multiple rare earth.
5. according to the simple preparation method of a kind of rare earth carbonate pearly pigment of claim 1, it is characterized in that, described precipitation agent is the soluble salt that contains bicarbonate radical and carbonate.
6. according to the simple preparation method of a kind of rare earth carbonate pearly pigment of claim 1, it is characterized in that, described precipitation agent can be the mixture of single precipitation agent or multiple precipitation agent.
7. according to the simple preparation method of a kind of rare earth carbonate pearly pigment of claim 1, it is characterized in that, the concentration of described rare-earth salts is 0.1-2.0mol/L, and the concentration of precipitation agent is 0.01-1.0mol/L.
8. according to the simple preparation method of a kind of rare earth carbonate pearly pigment of claim 1, it is characterized in that, described rare earths salt and precipitant mix method can be that rare earths salt splashes into precipitant solution or precipitant solution splashes into rare earths salt.
9. according to the simple preparation method of a kind of rare earth carbonate pearly pigment of claim 1, it is characterized in that, the pH value of described control mixed solution is 4.0-10.0.
10. according to the simple preparation method of a kind of rare earth carbonate pearly pigment of claim 1, it is characterized in that, the described reaction times is 1-24 hour.
11. according to the simple preparation method of a kind of rare earth carbonate pearly pigment of claim 1, it is characterized in that, described drying temperature is room temperature to 200 ℃.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111393875A (en) * | 2020-03-30 | 2020-07-10 | 内蒙古航天红峡化工有限公司 | Preparation method of titanium dioxide coated rare earth base pearlescent pigment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1443083A1 (en) * | 2003-02-03 | 2004-08-04 | MERCK PATENT GmbH | Pearlescent pigments based on selectively absorbing layers of chalcogenide, oxychalcogenide and mixed chalcogenides |
| CN1847153A (en) * | 2005-04-05 | 2006-10-18 | 内蒙古包钢稀土高科技股份有限公司 | RE salt preparing process and apparatus |
| CN103011241A (en) * | 2012-12-31 | 2013-04-03 | 江西理工大学 | Rare-earth praseodymium lamellar crystal and preparation method for same |
-
2013
- 2013-11-26 CN CN201310639134.3A patent/CN103613112A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1443083A1 (en) * | 2003-02-03 | 2004-08-04 | MERCK PATENT GmbH | Pearlescent pigments based on selectively absorbing layers of chalcogenide, oxychalcogenide and mixed chalcogenides |
| CN1847153A (en) * | 2005-04-05 | 2006-10-18 | 内蒙古包钢稀土高科技股份有限公司 | RE salt preparing process and apparatus |
| CN103011241A (en) * | 2012-12-31 | 2013-04-03 | 江西理工大学 | Rare-earth praseodymium lamellar crystal and preparation method for same |
Non-Patent Citations (2)
| Title |
|---|
| 冷忠义等: "用碳酸氢铵作沉淀剂制取碳酸钕和氧化钕", 《稀土》, vol. 21, no. 6, 31 December 2000 (2000-12-31), pages 26 - 29 * |
| 王玉香等: "新型稀土变色珠光颜料的研究", 《有色金属科学与工程》, vol. 4, no. 1, 28 February 2013 (2013-02-28), pages 83 - 88 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111393875A (en) * | 2020-03-30 | 2020-07-10 | 内蒙古航天红峡化工有限公司 | Preparation method of titanium dioxide coated rare earth base pearlescent pigment |
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Application publication date: 20140305 |