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Calcium hexaluminate blue ceramic pigment and preparation method thereof

A ceramic pigment, calcium hexaaluminate technology, applied in fibrous fillers and other directions, can solve the problem of high price of cobalt

Active Publication Date: 2019-10-22
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a calcium hexaaluminate blue ceramic pigment and a preparation method thereof. The blue ceramic pigment is prepared by using cheap raw materials to solve the problem that cobalt in cobalt blue is expensive, and its blueness value is b * Reached a level similar to cobalt blue

Method used

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  • Calcium hexaluminate blue ceramic pigment and preparation method thereof
  • Calcium hexaluminate blue ceramic pigment and preparation method thereof
  • Calcium hexaluminate blue ceramic pigment and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] CaAl 12-2x Ni x Ti x o 19 The preparation method of the calcium hexaaluminate blue ceramic pigment whose value of x is 0.6 comprises the steps:

[0028] (1) by CaAl 10.8 Ni 0.6 Ti 0.6 o 19 The stoichiometric ratios of Ca, Al, Ni, and Ti in the middle are weighed respectively for aluminum hydroxide (Al(OH) 3 ), titanium hydroxide (Ti(OH) 4 ), nickel oxide (NiO), calcium carbonate, put the above raw materials into a ball mill tank, pour them into anhydrous ethanol ball mill for 24 hours, and obtain a uniformly mixed and refined slurry; the ratio of the total mass of raw materials to anhydrous ethanol is 1: 2;

[0029] (2) Put the slurry obtained in step (1) into a drying oven at an environment of about 80°C to dry;

[0030] (3) Put the dried powder in step (2) into a box-type electronic furnace for calcining with a cover. The temperature control degree is: from room temperature to 1000°C at a rate of 5°C / min, and then at a rate of 2°C / min The temperature was ra...

Embodiment 2

[0032] With the value of x among the embodiment 1 being 0.8, the blue ceramic pigment that adopts same preparation method to make is as image 3 shown.

Embodiment 3

[0034] With the value of x among the embodiment 1 being 1.0, the blue ceramic pigment that adopts same preparation method to make is as Figure 4 shown.

[0035] Comparative analysis

[0036] The CIELAB color parameters were measured using a Konica Minolta colorimeter, and three related parameters L*a*b* were obtained, which were expressed as brightness, red / green and yellow / blue color values; as Figure 5 Shown is the real photo of the existing cobalt blue powder, its b* value is -38.19, and the lightness value L* is 53.98; the chromaticity values ​​of the above three kinds of ceramic pigments are shown in Table 1. When 1.0, its color basically reaches the color of cobalt blue, especially for samples with x=0.8, its b value reaches -37.07, which is equivalent to the blueness value of cobalt blue, and the lightness value L* is higher than the existing cobalt blue powder;

[0037] The ultraviolet-visible diffuse reflectance spectrum of the sample was measured by a spectrophot...

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Abstract

The invention discloses a calcium hexaluminate blue ceramic pigment and a preparation method thereof. The blue ceramic pigment is prepared from cheap aluminum hydroxide (Al(OH)3), titanium hydroxide (Ti(OH)4), nickel oxide (NiO) and calcium carbonate, so the problem of high price of cobalt in cobalt blue is overcome. The blueness b* of the prepared blue ceramic pigment reaches -37.07, which is close to the b* value of cobalt blue.

Description

technical field [0001] The invention belongs to the field of ceramic pigments and preparation thereof, in particular to a calcium hexaaluminate blue ceramic pigment and a preparation method thereof. Background technique [0002] Cobalt blue is bright and pure. It is a very saturated blue pigment. At the same time, it has high temperature resistance, which can reach 1200-1400°C, which is beyond the reach of ordinary pigments. It can be used for high-temperature ceramic pigments, coil coatings, high-temperature Coatings, polyolefins, engineering resins, advanced art pigments, colored stones, cement building materials and other industries; however, the raw materials need to use a large amount of cobalt oxide or cobalt compounds, which are expensive, and the price of industrial-grade cobalt oxide can reach RMB 180,000 / ton, the production cost is higher, so it is limited and cannot be widely used in common fields; therefore, it is urgent to seek a non-cobalt blue colorant with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/00C04B35/44C04B35/626
CPCC01P2006/62C01P2006/63C01P2006/64C04B35/44C04B35/62605C04B35/62675C04B2235/3208C04B2235/3218C04B2235/3232C04B2235/3279C09C1/0009
Inventor 宋希文王青春郭瑞吴潇阳郜健全包金小吕浩东谢敏周芬杨皓
Owner INNER MONGOLIA UNIV OF SCI & TECH
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