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Sol-gel preparation method of ceramic bonding agent

A ceramic bond, sol-gel technology, used in manufacturing tools, metal processing equipment, abrasives, etc., can solve the problems of poor organizational uniformity, loose bonding of abrasives, phase-separation cracking, etc., to improve high-temperature fluidity and eliminate concentration. Difference, the effect of preventing particle agglomeration

Inactive Publication Date: 2020-11-24
卢俊杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nanomaterials are easy to agglomerate and difficult to disperse in powder, and it is difficult to distribute evenly in the binder by simple dry mixing and wet mixing. The ceramic binder with uneven structure will cause the abrasive tool to loosely bond and have a uniform structure during sintering. Poor performance, phase separation or even cracking, it is difficult to take advantage of the advantages of nano-materials to reduce refractoriness, and obtain high-performance vitrified bond abrasives

Method used

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  • Sol-gel preparation method of ceramic bonding agent
  • Sol-gel preparation method of ceramic bonding agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The vitrified bond of embodiment 1 is made up of the component of following mass percent:

[0025] ZnO 5%, ZrO 2 2%, Na 2 O 4%, Li 2 O 3%, Al 2 o 3 11%, B 2 o 3 19%, TiO 2 6%, SiO 2 50%.

[0026] Calculate the amount of raw materials zinc acetate, zirconium acetate, sodium nitrate, lithium nitrate, aluminum nitrate, boric acid, tetrabutyl titanate and acidic silica sol according to the mass ratio of the above oxides, and prepare the ingredients for later use.

[0027] The sol-gel preparation method of above-mentioned ceramic bond comprises the following steps:

[0028] 1) dissolving zinc acetate and zirconium acetate in an aqueous acetic acid solution with a mass concentration of 20% to form a mixed solution A; in the resulting mixed solution A, control the total concentration of zinc acetate and zirconium acetate to be 1.0mol / L;

[0029] Boric acid is dissolved in water to make boric acid solution, and sodium nitrate, lithium nitrate, and aluminum nitrate...

Embodiment 2

[0034] The vitrified bond of embodiment 2 is made up of the component of following mass percent:

[0035] ZnO 4%, ZrO 2 3%, Na 2O 4%, Li 2 O 3%, Al 2 o 3 10%, B 2 o 3 18%, TiO 2 6%, SiO 2 52%.

[0036] Calculate the amount of raw materials zinc acetate, zirconium acetate, sodium nitrate, lithium nitrate, aluminum nitrate, boric acid, tetrabutyl titanate and acidic silica sol according to the mass ratio of the above oxides, and prepare the ingredients for later use.

[0037] The sol-gel preparation method of above-mentioned ceramic bond comprises the following steps:

[0038] 1) dissolving zinc acetate and zirconium acetate in an aqueous acetic acid solution with a mass concentration of 20% to make a mixed solution A; in the mixed solution A, the total concentration of zinc acetate and zirconium acetate is 1.0mol / L;

[0039] Boric acid is dissolved in water to make boric acid solution, and sodium nitrate, lithium nitrate, and aluminum nitrate are dissolved in bori...

Embodiment 3

[0044] The vitrified bond of embodiment 3 is made up of the component of following mass percent:

[0045] ZnO 5%, ZrO 2 2%, Na 2 O 3%, Li 2 O 4%, Al 2 o 3 9%, B 2 o 3 16%, TiO 2 6%, SiO 2 55%.

[0046] Calculate the amount of raw materials zinc acetate, zirconium acetate, sodium nitrate, lithium nitrate, aluminum nitrate, boric acid, tetrabutyl titanate and acidic silica sol according to the mass ratio of the above oxides, and prepare the ingredients for later use.

[0047] The sol-gel preparation method of above-mentioned ceramic bond comprises the following steps:

[0048] 1) dissolving zinc acetate and zirconium acetate in an aqueous acetic acid solution with a mass concentration of 20% to make a mixed solution A; in the mixed solution A, the total concentration of zinc acetate and zirconium acetate is 1.0mol / L;

[0049] Boric acid is dissolved in water to make boric acid solution, and sodium nitrate, lithium nitrate, and aluminum nitrate are dissolved in bori...

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Abstract

The invention relates to a sol-gel preparation method of a ceramic bonding agent. The preparation method comprises the steps that 1) zinc acetate and zirconium acetate are taken and dissolved in an acetic acid solution to prepare a mixed solution A, and sodium nitrate, lithium nitrate and aluminum nitrate are taken and dissolved in a boric acid solution to prepare a mixed solution B; 2) tetrabutyltitanate is taken and added into absolute ethanol to prepare a solution, the mixed solution A is added, and heat reaction is carried out under ultrasonic conditions to prepare sol A; 3) firstly the mixed solution B is added into acidic silica sol for mixing uniformly, and then the sol A is added to prepare mixed sol; 4) ammonia is added into the mixed sol under the ultrasonic conditions, so thatpH of a system reaches 5 or above, and wet gel is prepared; and 5) the obtained wet gel is dried, sintered and cooled to obtain the ceramic bonding agent. According to the preparation method, the uniform mixing of components of the ceramic bonding agent at the molecular level is promoted through smooth rubber alloy, the grain size is small, the reactivity is high, refractoriness is greatly reduced, and high-temperature fluidity is significantly improved; and formed pores after sintering are small and uniform, the structure is uniform without defects, and the mechanical strength is high.

Description

technical field [0001] The invention belongs to the technical field of vitrified binders, and in particular relates to a sol-gel preparation method of vitrified binders. Background technique [0002] Abrasives are tools used for grinding, grinding and polishing, and are widely used in people's daily life and industrial production. In general, abrasive tools are composed of three elements: abrasives, binders and pores. Abrasives are the skeleton of abrasives. They are hard and not easy to break, and their main function is grinding; binders are mainly used to bond abrasives, making them specific The shape has a certain strength and self-sharpening, and plays a role in holding the abrasive during the grinding process; the air hole refers to the gap between the abrasive and the bonding agent, which has the functions of chip holding, chip breaking, storage of coolant, lubrication, Eliminate the effect of heat. Among the above three elements, the performance of the bonding agent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/18B24D3/34
CPCB24D3/18B24D3/342
Inventor 卢俊杰
Owner 卢俊杰
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