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A kind of preparation method of high-solid low-viscosity ceramic slurry

A ceramic slurry, high-solid and low-viscosity technology, applied in the field of powder dispersion, can solve the problems of affecting the photocatalytic activity, easily destroying the whisker structure, unable to significantly increase the solid content of potassium tetratitanate slurry, etc. , The effect of stable surface properties and simple operation

Inactive Publication Date: 2017-08-25
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

General powder dispersion methods such as: ball milling, modification by adding conventional dispersants, etc., cannot significantly increase the solid content of potassium tetratitanate slurry
And if the ball milling time is too long, it will easily destroy the whisker structure, which will affect its photocatalytic activity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take 150g of the original whiskers of potassium tetratitanate and place it in a 2L ball milling tank. According to the mass ratio of balls and materials at 2:1, put the balls and powder in the ball milling tank for ball milling for 10 hours, take out the milled potassium tetratitanate powder and disperse Stir in deionized water with a magnetic stirrer for 5 hours, vacuum filter, and dry. Take 100 g of potassium tetratitanate powder after washing and drying, add deionized water to disperse, and add 0.5 % stearic acid, placed in a collector type constant temperature heating mixer at 80°C and stirred for 20min, suction filtered, dried at 80°C for 5h, after drying, add 3% stearic acid relative to the quality of the obtained powder, and place in the collector Stir at 85°C for 18 minutes in a thermal constant temperature heating mixer, filter with suction, and dry at 90°C for 4 hours, place the obtained modified potassium tetratitanate whiskers in deionized water, adjust the p...

Embodiment 2

[0029] Take 100g of the original whiskers of potassium tetratitanate and put it in a 2L ball milling tank. According to the ball-to-material ratio of about 2:1, put the balls and powder in the ball milling tank for 5 hours, and take out the milled potassium tetratitanate powder and disperse In deionized water, place it on a magnetic stirrer and stir for 1 hour, vacuum filter, and dry, take 100 g of potassium tetratitanate powder after washing and drying, add deionized water to disperse, and add relative potassium tetratitanate to the suspension Stearic acid with 5% powder mass is placed in a collector-type thermostatic heating stirrer and stirred at 100°C for 5 minutes, suction filtered, dried at 120°C for 1 hour, and 1% stearic acid relative to the obtained powder mass is added after drying. Put it in a collector-type thermostatic heating stirrer and stir it at 80°C for 20 minutes, filter it with suction, and dry it at 80°C for 5 hours. Put the obtained modified potassium tetr...

Embodiment 3

[0032] Take 120g of the original whiskers of potassium tetratitanate and put it in a 2L ball milling tank. According to the ball-to-material ratio of about 2:1, put the balls and powder in the ball milling tank for 8 hours, and take out the milled potassium tetratitanate powder and disperse In deionized water, put it on a magnetic stirrer and stir for 3 hours, vacuum filter, and dry, take 100g of potassium tetratitanate powder washed and dried, add deionized water to disperse, add relative potassium tetratitanate to the suspension Stearic acid with a powder mass of 3%, placed in a collector type constant temperature heating mixer at 85°C and stirred for 18min, suction filtered, dried at 100°C for 3h, after drying, 2% stearic acid relative to the obtained powder mass was added, Put it in a collector-type constant temperature heating stirrer and stir it at 95°C for 8 minutes, filter it with suction, and dry it at 85°C for 4 hours. Put the obtained modified potassium tetratitanate...

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Abstract

The invention relates to a high-solid and low-viscosity ceramic slurry and a preparation method thereof, comprising the following steps: (1) Ball milling: take the original whiskers of potassium tetratitanate and put them in a ball mill pot, mill them on a ball mill, and take them out for later use; 2) Washing: Disperse the ball-milled potassium tetratitanate whiskers in deionized water, stir on a magnetic stirrer, vacuum filter, and dry; (3) primary modification of stearic acid; (4) stearic acid Secondary modification; (5) adjust pH: place the modified potassium tetratitanate whisker obtained in step (4) in deionized water to adjust pH; (6) add dispersant: mix the slurry obtained in step (5) material, adding a dispersant and stirring to obtain a high-solid and low-viscosity potassium tetratitanate ceramic slurry. The advantages of the present invention are: adjusting pH and adding dispersant are easy to operate, and can obtain slurry with higher solid content under the premise of ensuring slurry fluidity, and the highest solid content of potassium tetratitanate ceramic slurry can reach 75%.

Description

technical field [0001] The invention belongs to the technical field of powder dispersion, and relates to a preparation method of ceramic slurry, in particular to a high-solid and low-viscosity ceramic slurry and a preparation method thereof. Background technique [0002] In the new century, human beings are facing new challenges. Energy crisis and environmental pollution restrict the pace of sustainable development of human beings. Semiconductor photocatalytic technology is expected to become an ideal model to solve this problem. In the early stage of photocatalytic reaction development, the powder dosing method was mainly used, but this method has problems such as difficult recycling, complicated post-processing, and high operating costs. In response to this problem, some researches have made TiO 2 Immobilized on the carrier to improve its photocatalytic activity. [0003] Potassium tetratitanate whisker is a photocatalytic material. To achieve its immobilization, the pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/462C04B35/626
Inventor 吉晓莉易芳胡鹏飞
Owner WUHAN UNIV OF TECH
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