Preparation method for zirconium silicate wrapped cadmium sulfide selenide scarlet pigment

A technology of cadmium sulfide selenide and zirconium silicate is applied in the field of preparation of cadmium sulfide selenide red material wrapped with zirconium silicate, which can solve the problems of affecting the sealing effect, long synthesis time, easy deformation of the container, etc., and achieves the loss of color body Small, dense coating layer of pigment, reducing the effect of devitrification activation energy

Inactive Publication Date: 2013-03-20
SHAANXI UNIV OF SCI & TECH
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Problems solved by technology

[0004] Synthesis of ZrSiO by liquid phase method 4 -CdS x Se 1-x In the study of pigments, Deng Yang (Deng Yang, Deng Jiancheng, Research on Synthesis of Zirconium Silicate Encapsulated Cadmium Sulfur Selenide Pigment by Sol Precipitation Method, 2006) synthesized Zirconium Silicate Encapsulated Pigment by Sol Co-precipitation and Auxiliary G Cadmium Sulfur Selenide Colorant Using CeO 2 The special properties of zirconium silicate and the nucleation mechanism of zirconium silicate synthesized zirconium silicate-wrapped cadmium sulfoselenide red pigment at 950°C. Due to the decomposition of cadmium sulfoselenide during high temperature calcination, a well-sealed iron container is required. The operation is difficult, and the container is easily deformed, which affects its sealing effect
Yekta.B.Eftekhan, Tamizifar.M, Rahimi.N, Song Xiaolan, Peng Lin, etc., using Cd(NO 3 ) 2 , Se powder, ZrOCl 2 ·8H 2 O, Na 2 SiO 3 9H 2 O, Na 2 Soluble salts such as S were used as raw materials to synthesize zirconium silicate-wrapped cadmium sulfoselenide pigment by conventional hydrothermal method (Acta Silicate Sinica, 2009, 37(7): 1267-1267), but the synthesis time was as long as 10h , and there is no report of doping modified colorants

Method used

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  • Preparation method for zirconium silicate wrapped cadmium sulfide selenide scarlet pigment
  • Preparation method for zirconium silicate wrapped cadmium sulfide selenide scarlet pigment
  • Preparation method for zirconium silicate wrapped cadmium sulfide selenide scarlet pigment

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Experimental program
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Embodiment 1

[0014] Embodiment 1: 1) At first, press CdSO 4 :Na 2 The molar ratio of S:Se=1:0.6:0.2 will CdSO 4 and Na 2 S was dissolved in distilled water to make 0.25mol / L CdSO 4 and 0.2mol / L Na 2 S solution, then to Na 2 Add selenium powder in the S solution and stir sodium hydroxide dropwise to get the NaSSe solution after the selenium powder is completely dissolved, wherein Se: NaOH=1: 1 molar ratio, then the described CdSO 4 Solution is added dropwise in NaSSe solution to obtain cadmium sulfur selenide suspension; 2) secondly, press CdSO 4 : ZrOCl 2 :Na 2 SiO 4 =1:2:2.2 molar ratio ZrOCl 2 and Na 2 SiO 4 respectively dissolved in distilled water to form 0.4mol / L ZrOCl 2 and 0.48mol / L Na 2 SiO 4 solution, and then use ammonia or acetic acid to adjust ZrOCl 2 and Na 2 SiO 4 After the pH value of the solution is 5 to 8, mix the two to obtain a mixed sol, add the cadmium sulfoselenide suspension obtained in step 1) dropwise to the mixed sol, and use acetic acid to contro...

Embodiment 2

[0015] Embodiment 2: 1) at first, press CdSO 4 :Na 2 The molar ratio of S:Se=1:0.8:0.25 will CdSO 4 and Na 2S was dissolved in distilled water to make 0.25mol / L CdSO 4 and 0.2mol / L Na 2 S solution, then to Na 2 Add selenium powder in the S solution and stir sodium hydroxide dropwise to get the NaSSe solution after the selenium powder is completely dissolved, wherein Se: NaOH=1: 1 molar ratio, then the described CdSO 4 Solution is added dropwise in NaSSe solution to obtain cadmium sulfur selenide suspension; 2) secondly, press CdSO 4 : ZrOCl 2 :Na 2 SiO 4 =1:2:2.2 molar ratio ZrOCl 2 and Na 2 SiO 4 respectively dissolved in distilled water to form 0.4mol / L ZrOCl 2 and 0.48mol / L Na 2 SiO 4 solution, and then use ammonia or acetic acid to adjust ZrOCl 2 and Na 2 SiO 4 After the pH value of the solution is 5 to 8, mix the two to obtain a mixed sol, add the cadmium sulfoselenide suspension obtained in step 1) dropwise to the mixed sol, and use acetic acid to contro...

Embodiment 3

[0016] Embodiment 3: 1) at first, press CdSO 4 :Na 2 The molar ratio of S:Se=1:0.7:0.3 will CdSO 4 and Na 2 S was dissolved in distilled water to make 0.25mol / L CdSO 4 and 0.2mol / L Na 2 S solution, then to Na 2 Add selenium powder in the S solution and stir sodium hydroxide dropwise to get the NaSSe solution after the selenium powder is completely dissolved, wherein Se: NaOH=1: 1 molar ratio, then the described CdSO 4 Solution is added dropwise in NaSSe solution to obtain cadmium sulfur selenide suspension; 2) secondly, press CdSO 4 : ZrOCl 2 :Na 2 SiO 4 =1:2:2.2 molar ratio ZrOCl 2 and Na 2 SiO 4 respectively dissolved in distilled water to form 0.4mol / L ZrOCl 2 and 0.48mol / L Na 2 SiO 4 solution, and then use ammonia or acetic acid to adjust ZrOCl 2 and Na 2 SiO 4 After the pH value of the solution is 5 to 8, mix the two to obtain a mixed sol, add the cadmium sulfoselenide suspension obtained in step 1) dropwise to the mixed sol, and use acetic acid to contro...

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Abstract

The invention relates to a preparation method for an extended red ZrSiO_4-Cd(S_xSe_(1-x)) pigment.When a presoma is prepared by utilizing a collosol coprecipitation method, a developing body is generated in a solution and rare-earth elements are introduced for being mixed with a colorant, thereby changing the surface activity thereof, improving the chemical affinity of the developing body and a coating, and facilitating the cladding of the presoma to the developing body; microwave hydro-thermal treatment is carried out on the presoma of the ZrSiO_4-Cd(S_xSe_(1-x)) pigment by utilizing a microwave hydro-thermal method to accelerate chemical reactions of the system; ceramic pigment crystals are dissolved out at first, and then the conditions are changed so as to dissolve out inclusion crystals by taking the firstly dissolved crystal as nucluting agent; a transitional face can be generated by materials formed by the rare-earth elements and a mineralizer in the reaction system, ludox and zirconium sol in the forming process of zirconium silicate, the crystallization activation energy of the zirconium silicate can be decreased, the crystallization speed of the zirconium silicate can be quickened, the zirconium silicate can be devitrified in shorter time and the densifying of the zirconium silicate inclusion can be ensured, thereby achieving the purpose of coating the pigment.

Description

technical field [0001] The invention relates to a preparation method of a red color material, in particular to a preparation method of a zirconium silicate-wrapped cadmium sulfur selenide scarlet material. Background technique [0002] The cadmium sulfoselenide bright red pigment has pure and bright colors and a wide color range, and is currently the most brilliant red material available for ceramic decoration. In particular, the zircon crystal-encapsulated cadmium sulfoselenide pigment not only has excellent color rendering effect, but also has the characteristics of high temperature stability. It is known as "China Red" and is an extremely precious red pigment. However, due to the high synthesis temperature of zirconium silicate, cadmium sulfoselenide is easy to oxidize and decompose at high temperature, and the crystal form of zirconium silicate is inconsistent with cadmium sulfoselenide, which leads to the wrapping of cadmium sulfoselenide pigment in zirconium silicate ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/85
Inventor 王芬刘大为李强李栋朱建峰
Owner SHAANXI UNIV OF SCI & TECH
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