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Preparation method of potassium hexatitanate crystal plates

A technology of potassium hexatitanate crystal and metatitanic acid, applied in the field of materials, can solve the problems of short whiskers, high production cost, increased production cost, etc., and achieve the effect of small particle size and good product uniformity

Active Publication Date: 2015-08-19
ZHANGJIAGANG OTSUKA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the methods for preparing potassium titanate include high-temperature sintering method, melting method, hydrothermal method, co-solvent method, etc. The product whiskers obtained by the sintering method have poor crystallinity and short whiskers, and the product solidified body and crystal whiskers obtained by the melting method The whiskers are difficult to separate, and the potassium hexatitanate wafers obtained by the hydrothermal method have good morphology and stable properties, but the synthesis requires an autoclave, and the co-solvent method requires high temperature and high production costs
In the existing production, titanium dioxide and potassium salt are mostly used as raw materials for preparation, which virtually increases the production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The titanium-containing raw material (the titanium-containing raw material has a content of more than 98%, a particle size of 100-200 mesh, and a specific surface area of ​​480 ± 20m 2 / g of rutile metatitanic acid with a content of more than 98%, a particle size of 300-325 mesh, and a specific surface area of ​​300±20m 2 / g of the mixture of anatase metatitanic acid, wherein the weight ratio of rutile metatitanic acid to anatase metatitanic acid is 2.3:1.0) and potassium-containing raw materials (the potassium-containing raw materials are potassium carbonate, potassium sulfate, chlorine The mixture of potassium chloride, wherein the weight ratio is potassium carbonate: potassium sulfate: potassium chloride = 7: 8: 5) is weighed and mixed in a ratio of 3: 1 by weight, and then pulverized by a ball mill to a particle size of 400 mesh and then sieved , the product after sieving is added in the high-speed shearing machine, and the content of adding 18% of raw material gros...

Embodiment 2

[0018] The titanium-containing raw material (the titanium-containing raw material has a content of more than 98%, a particle size of 100-200 mesh, and a specific surface area of ​​480 ± 20m 2 / g of rutile metatitanic acid with a content of more than 98%, a particle size of 300-325 mesh, and a specific surface area of ​​300±20m 2 / g of the mixture of anatase metatitanic acid, wherein the weight ratio of rutile metatitanic acid to anatase metatitanic acid is 2.3:1.0) and potassium-containing raw materials (the potassium-containing raw materials are potassium carbonate, potassium sulfate, chlorine The mixture of potassium chloride, wherein the weight ratio is potassium carbonate: potassium sulfate: potassium chloride = 7: 8: 5) is weighed and mixed in a ratio of 3: 1 by weight, and then pulverized by a ball mill to a particle size of 400 mesh and then sieved , the product after sieving is added in the high-speed shearing machine, and the content of adding 18% of raw material gros...

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Abstract

The invention discloses a preparation method of potassium hexatitanate crystal plates. According to the preparation method, a titanium-containing raw material, a potassium-containing raw material, and an auxiliary agent are mixed, an obtained mixture is delivered into a high temperature equipment for sintering and fusing, and then is collected, and is subjected to shock chilling in a special shock chilling equipment; and an obtained product is delivered into a reaction contained for alkali adjustment, acid adjustment, filtration, water washing, drying, and sintering so as to obtain finished products. Diameter of prepared potassium titanate particles ranges from 0.5 to 0.8<mu>m, length ranges from 35 to 48 <mu>m, and product uniformity is high.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a method for preparing potassium hexatitanate wafers. Background technique [0002] Potassium hexatitanate wafers are widely used in the toughening and strengthening of resin-based and ceramic-based composites because of their excellent mechanical and high-temperature physical properties, good chemical stability and process performance, and high cost performance, especially in temperature-resistant Heat insulation materials, friction materials, insulation materials and other fields. [0003] At present, the methods for preparing potassium titanate include high-temperature sintering method, melting method, hydrothermal method, co-solvent method, etc. The product whiskers obtained by the sintering method have poor crystallinity and short whiskers, and the product solidified body and crystal whiskers obtained by the melting method The beard is difficult to separate, a...

Claims

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Application Information

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IPC IPC(8): C30B11/00C30B29/32
Inventor 於玉华林鑫郭继光
Owner ZHANGJIAGANG OTSUKA CHEM
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