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A kind of preparation method of nano-praseodymium yellow ceramic pigment

A technology of ceramic colorant and praseodymium yellow, which is applied in the field of preparation of nanometer praseodymium yellow ceramic colorant, can solve the problems of high energy consumption, heavy environmental pollution and the like, and achieve the effects of low firing temperature, environmental friendliness and low price.

Inactive Publication Date: 2016-08-24
LUOYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of high energy consumption and heavy environmental pollution existing in the production process of existing ceramic pigments, the invention provides a preparation method of nano-praseodymium yellow ceramic pigments

Method used

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preparation example Construction

[0020] A preparation method of nano-praseodymium yellow ceramic pigment, comprising the following steps:

[0021] Step 1. Take zirconium oxychloride, dissolve it in water, and stir to obtain a concentration of 8~13mol.L -1 Zirconium oxychloride solution;

[0022] Step 2: Take ammonium oxalate, add water, and prepare it to a concentration of 5mol.L -1 ammonium oxalate solution;

[0023] Step 3, in the zirconium oxychloride solution prepared in step 1, add the ammonium oxalate solution prepared in step 2 dropwise under rapid stirring to obtain a uniform and transparent zirconium oxalate colloidal solution;

[0024] Step 4: Take sodium silicate, dissolve it in water, and stir to obtain a concentration of 13-20 mol.L -1 Sodium silicate solution;

[0025] Step 5, under rapid stirring, the concentration is 5mol.L -1 The ammonium chloride solution is added dropwise in the sodium silicate solution prepared in step 4 to obtain silicic acid sol;

[0026] Step 6, take praseodymium ...

Embodiment 1

[0034] A preparation method of nano-praseodymium yellow ceramic pigment, comprising the following steps:

[0035] Step 1, take by weighing 30g of zirconium oxychloride, dissolve it in 20mL of water, stir to obtain zirconium oxychloride solution;

[0036] Step 2, weigh 12.4g of ammonium oxalate, add 20mL of water, and prepare 5mol . L -1 ammonium oxalate solution;

[0037] Step 3, put the zirconium oxychloride solution prepared in step 1 into a 500mL beaker, and under rapid stirring, add the ammonium oxalate solution in step 2 dropwise to obtain a uniform and transparent zirconium oxalate colloidal solution;

[0038] Step 4. Weigh 33g of sodium silicate, dissolve it in 20mL of water, and stir to obtain sodium silicate solution;

[0039] Step 5, under rapid stirring, mix 5mol . L -1 The ammonium chloride solution is added dropwise in the sodium silicate solution obtained in step 4 to obtain silicic acid sol;

[0040] Step 6. Weigh 5g of praseodymium oxide, put it in a smal...

Embodiment 2

[0047] A preparation method of nano-praseodymium yellow ceramic pigment, comprising the following steps:

[0048] Step 1, take by weighing 37g of zirconium oxychloride, dissolve it in 20mL of water, stir to obtain zirconium oxychloride solution;

[0049] Step 2, weigh 12.4g of ammonium oxalate, add 20mL of water, and prepare 5mol . L -1 ammonium oxalate solution;

[0050] Step 3, put the zirconium oxychloride solution prepared in step 1 into a 500mL beaker, and under rapid stirring, add the ammonium oxalate solution in step 2 dropwise to obtain a uniform and transparent zirconium oxalate colloidal solution;

[0051] Step 4. Weigh 37g of sodium silicate, dissolve it in 20mL of water, and stir to obtain sodium silicate solution;

[0052] Step 5, under rapid stirring, mix 5mol . L -1 The ammonium chloride solution is added dropwise in the sodium silicate solution obtained in step 4 to obtain silicic acid sol;

[0053]Step 6. Weigh 8g of praseodymium oxide, place it in a sma...

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Abstract

The invention relates to the technical field of a fine ceramic material, and particularly to a preparation method of a nanometer praseodymium yellow ceramic pigment. The preparation method comprises: taking sodium silicate, zirconium oxychloride, praseodymia, ammonium oxalate, ammonium chloride, hydrochloric acid, and the like as original raw materials; adopting a sol-gel method to prepare a praseodymium yellow gel precursor; taking sodium chloride and sodium fluoride as a mixed mineralizer; and preparing the nanometer praseodymium yellow ceramic pigment through low temperature sintering. The raw materials are low in price and are easily available; the production technology is simple and easy to control; the reagents are environment-friendly, so that the preparation method is convenient for industrial production. The prepared pigment has advantages of pure color, low sintering temperature, low energy consumption, loose and easy-powdered product, and the like, and is an ideal pigment for sintering a high-quality ceramic product.

Description

technical field [0001] The invention relates to the technical field of fine ceramic materials, in particular to a preparation method of nano-praseodymium yellow ceramic pigment. Background technique [0002] In recent years, scholars at home and abroad have done a lot of research work on fine ceramic pigments and achieved remarkable results. As a high-quality pigment with high temperature resistance, pure color and high thermal stability, zirconium-based pigments have attracted widespread attention from ceramic workers. With the unremitting efforts of ceramic pigment researchers, a large number of zirconium-based pigments came into being. The research and development, production and application of these pigments, while bringing prosperity to the development of the ceramic industry, have also brought severe challenges to the increasingly tight energy demand and the deteriorating environment. Therefore, the development of a batch of low energy consumption and environmental pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/85
Inventor 李俊霞屈文俊杜慧龙杜仲祥马录芳
Owner LUOYANG NORMAL UNIV
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