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Blue inkjet ceramic pigment and preparation method thereof

A technology of ceramic colorant and blue color, applied in the field of blue inkjet ceramic colorant and its preparation, can solve the problems of unsatisfactory color development effect, insufficient dispersion stability, large particle size of blue ceramic colorant, etc. Reduce the difficulty of pigment synthesis, better color development, and increase stability

Inactive Publication Date: 2013-06-12
佛山市南海万兴材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, calcined α-alumina is used as the raw material for the preparation of blue ceramic pigments prepared by traditional methods. Due to its insufficient activity, blue ceramic pigments have large particle sizes, unsatisfactory color development, and scattered Insufficient stability and other issues, do not have the performance suitable for ceramic inkjet printing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The preparation method of blue ink-jet ceramic color material of the present invention, comprises the steps:

[0027] 1) Preparation of seed crystals

[0028] Mix cobalt hydroxide, aluminum oxide, and aluminum hydroxide in a molar ratio (0.4-0.5): (0.4-0.6): (0.01-0.06) to obtain a mixture; mix the mixture with agate ball stones and water at a ratio of 100: (450 ~550): (54~66) weight ratio mixing, ball milling until the particle size reaches D90≤5μm, then drying and sieving the ball milled mixture, and then adding borides accounting for 3%~5% of the total weight, After mixing, calcining, ball milling, and drying to obtain seed crystals;

[0029] 2) Color preparation

[0030] Mix cobalt hydroxide, aluminum oxide, and aluminum hydroxide in a molar ratio (0.4-0.5): (0.4-0.6): (0.01-0.06), and then add 1% to 5% of the total weight of seed crystals and 3% to 5% boride by weight, mixed evenly, calcined, ball milled and dried to get the finished product.

[0031] The blue ...

Embodiment 1

[0038] 1. Seed crystal preparation:

[0039] 1) Prepare and mix cobalt hydroxide, aluminum oxide and aluminum hydroxide in a molar ratio of 0.4:0.5:0.04, respectively;

[0040] 2) Mix the above mixture with agate ball stones and water at a weight ratio of 100:500:60, and then use a ball mill to mill for about 78 hours. After milling, the particle size reaches D90≤5μm;

[0041] 3) Dry the above mixture at a temperature below 150°C, so that the moisture content of the dried mixture is <0.5%; pass the dried product through a 325-mesh sieve;

[0042] 4) Mix the above sieved mixture with boric acid with a concentration of 99% in a mass ratio of 95:5 and stir evenly;

[0043] 5) Put the above mixture into a crucible for calcination. The calcination process conditions are: 30℃~500℃, heating up for 4H; 500℃~1000℃, heating up for 4H; 1000℃~1300℃, heating up for 5H; ;

[0044] 6) Ball mill the above-mentioned calcined product until the particle size D90 reaches 3 μm to 5 μm, dry it i...

Embodiment 2

[0063] 1. Seed crystal preparation:

[0064] 1) Prepare and mix cobalt hydroxide, aluminum oxide and aluminum hydroxide with a molar ratio of 0.4:0.4:0.01, all of which are 6000 mesh;

[0065] 2) Mix the above mixture with agate ball stones and water evenly in a weight ratio of 100:500:60, and use a ball mill to mill for about 72 hours. After ball milling, the particle size reaches D90≤2μm;

[0066] 3) Dry the above mixture at a temperature below 150°C, so that the moisture content of the dried mixture is <0.5%; pass the dried product through a 6000-mesh sieve;

[0067] 4) Mix the above sieved mixture with boric acid with a concentration of 99% at a mass ratio of 96.5:3.5 and stir evenly;

[0068] 5) Put the above mixture into a crucible for calcination. The process conditions for calcination are: from 30°C to 500°C, heat up for 4H; from 500°C to 1000°C, heat up for 4H; from 1000°C to 1250°C, heat up for 5H; Constant temperature at 1250℃ for 5H, natural cooling;

[0069] 6)...

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Abstract

The invention discloses a preparation method of a blue inkjet ceramic pigment. The preparation method of the blue inkjet ceramic pigment comprises the following steps of: (1), preparing seed crystal, namely, uniformly mixing cobaltous hydroxide, aluminum oxide and aluminum hydroxide in a molar ratio of (0.4-0.5):(0.4-0.6):(0.01-0.06) to obtain a mixture, mixing the mixture with agate ball stone and water in a weight ratio of 100:(450-550):(54-66) and carrying out ball milling until the grain size of the ball-milled mixture reaches D90 not more than 5 microns, drying and screening the ball-milled mixture, and adding boride which is 3%-5% of total weight to the ball-milled mixture, uniformly mixing, roasting, carrying out ball milling and drying to obtain the seed crystal; (2), preparing the pigment, namely, uniformly mixing the cobaltous hydroxide, aluminum oxide and aluminium hydroxide in the molar ratio of (0.4-0.5):(0.4-0.6):(0.01-0.06) to obtain the mixture, adding the seed crystal which accounts for 1%-5% of the total weight and boride which accounts for 3%-5% of the total weight, uniformly mixing, roasting, carrying out ball milling and drying to obtain the finished product. The blue inkjet ceramic pigment has improved color development strength and improved product stability; and meanwhile, the preparation method disclosed by the invention is simple in process and low in pigment synthesis difficulty.

Description

technical field [0001] The invention relates to a preparation method of a ceramic color material, in particular to a blue ink-jet ceramic color material and a preparation method thereof. Background technique [0002] Inkjet printing technology for ceramic decoration is a decoration method in which colorants are made into multi-color inks, and then printed directly on the surface of ceramics by inkjet printing, and colored after firing. Compared with the existing traditional ceramic decoration methods, the inkjet printing technology for ceramic decoration has breakthrough advantages and good application prospects, and there are huge potential business opportunities. [0003] In the ceramic decorative color inkjet printing technology, the most important and difficult thing is the development of inkjet ceramic colorants, because its performance requires some special properties in addition to the particle size, viscosity, and surface tension of ordinary ink, such as: 1. It is r...

Claims

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Application Information

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IPC IPC(8): C04B41/85
Inventor 周占明
Owner 佛山市南海万兴材料科技有限公司
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