A kind of green phase bright yellow inorganic nano pigment and preparation method thereof

A technology of inorganic nano and inorganic pigments, applied in the field of inorganic pigments, can solve the problems of affecting the coloring effect of pigments and the decrease of yellow chroma value, and achieve the effect of uniform size and good dispersion

Active Publication Date: 2018-12-04
JINGDEZHEN CERAMIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bi 2 MoO 6 and Bi 2 WO 6 Although the introduction of the pigment can make the pigment present a stable green-shade yellow (a* value is about -5), it will cause the yellow chromaticity value (b* value) of the pigment to drop below 80, which greatly affects the color rendering effect of the pigment

Method used

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  • A kind of green phase bright yellow inorganic nano pigment and preparation method thereof
  • A kind of green phase bright yellow inorganic nano pigment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 Bi 0.88 Zn 0.08 Nd 0.04 V 0.9 al 0.1 o 4-δ Pigment preparation

[0023] According to theory, 0.25mol / L Bi can be synthesized 0.88 Zn 0.08 Nd 0.04 V 0.9 al 0.1 o 4-δ Prepare the solution.

[0024] First, according to the composition of the formula, bismuth nitrate pentahydrate (Bi(NO 3 ) 3 ·5H 2 O), ammonium metavanadate (NH 4 VO 3 ), zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O), neodymium nitrate (Nd(NO 3 ) 3 ) and aluminum nitrate nonahydrate (Al(NO 3 ) 3 9H 2 O) Add it into pure water, heat it to 80°C with constant stirring, then add diethylenetriaminepentaacetic acid as a complexing agent, and obtain a mixed solution after the components are fully dissolved. The molar ratio of the complexing agent to the total amount of metal ions For: complexing agent: metal ion = 2.5:2. Add sodium dodecylbenzenesulfonate as a dispersant while continuing to stir, and the dosage of the dispersant is 0.35% (relative to the mass percentage concentra...

Embodiment 2

[0025] Example 2 Bi 0.9 Zn 0.1 V 0.88 al 0.06 Mo 0.06 o 4-δ Pigment preparation

[0026] According to theory, 0.4mol / L Bi can be synthesized 0.9 Zn 0.1 V 0.88 al 0.06 Mo 0.06 o 4-δ Prepare the solution.

[0027] First, according to the composition of the formula, bismuth oxide (Bi 2 o 3 ), vanadium pentoxide (V 2 o 5 ), zinc oxide (ZnO), aluminum oxide (Al 2 o 3 ) and ammonium molybdate tetrahydrate were added to pure water, heated to 90°C with constant stirring, and then diethylenetriaminepentaacetic acid was added as a complexing agent. After the components were fully dissolved, a mixed solution was obtained. The complexing agent and metal The molar ratio of the total amount of ions is: complexing agent: metal ion = 4:2. Add sodium dodecylbenzenesulfonate as a dispersant while continuing to stir, and the dosage of the dispersant is 0.2% (relative to the mass percentage concentration of the added water). After the dispersant is fully dissolved, add ammonia ...

Embodiment 3

[0028] Example 3 Bi 0.92 La 0.08 V 0.9 Ta 0.1 o 4-δ Pigment preparation

[0029] According to theory, 0.5mol / L Bi can be synthesized 0.92 La 0.08 V 0.9 Ta 0.1 o 4-δ Prepare the solution.

[0030] First, according to the composition of the formula, bismuth nitrate pentahydrate (Bi(NO 3 ) 3 ·5H 2 O), ammonium metavanadate (NH 4 VO 3 ), lanthanum nitrate hexahydrate (La(NO 3 ) 2 ·6H 2 O), tantalum oxalate was added to pure water, heated to 80°C with constant stirring, then ethylenediaminetetraacetic acid was added as a complexing agent, and each component was fully dissolved to obtain a mixed solution, in which the complexing agent and the total amount of metal ions The molar ratio is: complexing agent: metal ion = 3:2. While continuing to stir, add sodium lauryl sulfate as a dispersant, and the amount of the dispersant is 0.3% (relative to the mass percentage concentration of the added water). After the dispersant is fully dissolved, add ammonia water with a c...

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Abstract

The invention discloses a green-phase bright yellow inorganic nano-pigment and a preparation method thereof. A yellow pigment is prepared by combining a complexation method with uniform precipitation and doping with a small amount of metal ions to replace Bi and V in BiVO4 at the same time, which contributes to Inhibit the transformation of the pigment crystal phase structure to the tetragonal phase, and obtain pure monoclinic scheelite-type crystal phase pigments. At the same time, through the co-doping of ions at different lattice positions, it can also more effectively control the electronic structure of the pigment composition crystal and improve the crystallinity. The reflectivity of yellow light and the increased absorption of blue light make the pigment present a bright green-yellow tone, and its L* value, a* value, b* value are 90~92, -3~‑6 and 90~92.5 respectively . The environment-friendly, non-toxic, high-performance yellow inorganic pigment with good stability has good application prospects in the fields of coatings, plastics, inks and the like, and can replace toxic yellow organic pigments.

Description

technical field [0001] The invention belongs to the field of inorganic pigments, in particular to a green phase bright yellow inorganic nano pigment and a preparation method thereof. Background technique [0002] As an important inorganic composite oxide pigment, bismuth vanadate (BiVO 4 ) yellow pigment is expected to replace the traditional lead chrome yellow, cadmium yellow and zinc chrome yellow and other yellow pigments containing lead, chromium and cadmium toxic heavy metals due to its strong weather resistance, green environmental protection and non-toxicity. , strong tinting strength, long service life and unique infrared reflection, etc., are widely used in coatings, plastics, cosmetics and ink industries. Especially the BiVO which exhibits a green phase 4 The yellow pigment has the characteristics of bright and vivid, eye-catching, high tone and strong hiding power. Its color rendering effect is close to the high-performance yellow organic pigment of the same app...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G31/00C09C1/00C09C3/06B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00C01G31/00C01P2002/72C01P2004/03C01P2004/62C01P2006/62C01P2006/63C01P2006/64C09C1/0006C09C3/06
Inventor 张小珍汪永清江瑜华常启兵白明敏
Owner JINGDEZHEN CERAMIC UNIV
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