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Black nanophase ceramics pigment and preparation method thereof

A technology of nano-ceramics and pigments is applied in the field of nano-black pigments and the preparation of black nano-pigments to achieve the effects of black color, stable color and low price.

Inactive Publication Date: 2010-07-07
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many reports on the synthesis of nanomaterials by this method (Hao Shiyou et al., Acta Chemie Sinica, 2008.66.1203-1208; Li Guifang et al., Acta Silicate Sinica. 2008.36.25-29). Nano-pigments are rarely reported

Method used

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  • Black nanophase ceramics pigment and preparation method thereof
  • Black nanophase ceramics pigment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh 68gMn(NO 3 ) 2 4H 2 O, 124gCr(NO 3 ) 3 9H 2 O, 208gFe(NO 3 ) 3 9H 2 O, 42gCo(NO 3 ) 2 ·6H 2 O, 30gH 2 O and 195g CH 3 COONH 4 And mix evenly, hold in Al 2 o 3 In the crucible, it is heated at 400°C, and the combustion reaction occurs until no more gas is released.

[0023] TEM photo ( figure 2 ) shows that its highly dispersed nanoparticle size is between 10-40nm, and the XRD pattern ( figure 1 ) to determine that the combustion product is a Co-Cr-Mn-Fe spinel solid solution structure. All performance indicators meet the technical requirements (see Table 1, the inspection method adopts QB / T2455.2-1999).

Embodiment 2

[0025] Weigh 7gMn(NO 3 ) 2 4H 2 O, 124gCr(NO 3 ) 3 9H 2 O, 268gFe(NO 3 ) 3 9H 2 O, 11gCo(NO 3 ) 2 ·6H 2 O, 10gH 2 O and 110g HCOONH 4 And mix evenly, hold in Al 2 o 3 In the crucible, it is heated at 430°C, and the combustion reaction occurs until no more gas is released.

[0026] The TEM photos show that the size of its highly dispersed nanoparticles is between 20-50nm, and the XRD pattern determines that the combustion product is a Co-Cr-Mn-Fe spinel solid solution structure. .

Embodiment 3

[0028] Weigh 100gMn(NO 3 ) 2 4H 2 O, 30gCr(NO 3 ) 3 9H 2O, 300gFe(NO 3 ) 3 9H 2 O, 6gCo(NO 3 ) 2 ·6H 2 O, 50gH 2 O and 204g CH 3 CH 2 COONH 4 And mix evenly, hold in Al 2 o 3 In the crucible, it is heated at 450°C, and the combustion reaction occurs until no more gas is released.

[0029] The TEM photos show that the size of the highly dispersed nanoparticles is between 10-80nm, and the XRD pattern determines that the combustion product is a Co-Cr-Mn-Fe spinel solid solution structure. Table 1 shows that the performance indicators of the black nano-pigment prepared by this method all meet the technical requirements.

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Abstract

The invention discloses a black nanophase ceramics pigment and a preparation method thereof, the method comprises: dissolving ammonium oxalate, ammonium formate, ammonium acetate and ammonium propionate in water and then mixing evenly with chromic nitrate, manganous nitrate, ferric nitrate and cobalt nitrate, heating the mixture at the temperature of 400-500 DEG C, and combusting until no air gives out to obtain the black nanophase ceramics pigment. The invention has simple reaction conditions, and the raw materials such as the nitrates, the ammonium acetate and the like are medicaments with low price and abundant resource; and the invention is benefit to large-scale industrialized production. The prepared black nanophase ceramics pigment has black color, high temperature-resistance, stable performance and good dispersibility.

Description

technical field [0001] The invention relates to a black pigment and its preparation technology, in particular to a nano black pigment suitable for use as a glaze colorant, and a method for preparing the black nano pigment. Background technique [0002] With the improvement of people's living standards, people's requirements for porcelain tend to be artistic for daily-use ceramics and daily-use for artistic ceramics. Black glaze is a kind of precious glaze. Using black glaze to decorate ceramics has a solemn, serious, simple and elegant style, and is deeply loved by people. Ceramic black glaze products have a history of hundreds of years since the Song Dynasty, but it is still difficult to produce products with pure black, bright glaze and minimal color difference in China. [0003] Since chromium, iron, manganese, nickel, copper, cobalt and other elements are transition elements of the fourth period in the periodic table, the outermost layer of their ions is the d orbital, ...

Claims

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Application Information

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IPC IPC(8): C04B41/85
Inventor 魏坤郭武生舒丽君曾晓峰吴远
Owner SOUTH CHINA UNIV OF TECH
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