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A kind of titanium diboride/silicon carbide composite bulletproof material and its preparation method and application

A technology of titanium diboride and silicon carbide, which is applied in protective equipment, offensive equipment, armor, etc., can solve the constraints on the industrial application of titanium diboride/silicon carbide composite bulletproof materials, uneven product volume density distribution, diboron Solve problems such as low diffusion coefficient of titanium oxide ceramics, achieve the effects of promoting migration and transportation, facilitating industrial production, and easy operation

Active Publication Date: 2022-02-18
LAIWU ADVANCED CERAMIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the following problems still exist in the preparation of bulletproof plates with a larger thickness (greater than 20mm): First, due to the low diffusion coefficient of titanium diboride ceramics, it is difficult to obtain high density, and the decrease in density will lead to bulletproof The performance becomes worse; the second is that the volume density distribution of the product is uneven, which will reduce the reliability of bulletproof ceramics
The existence of the above problems restricts the industrial application of titanium diboride / silicon carbide composite bulletproof materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The preparation method of the above-mentioned titanium diboride / silicon carbide composite bulletproof material comprises the following steps:

[0034] (1) Weigh titanium diboride powder, silicon carbide powder, silicon powder, carbon powder, resin, dispersant and binder in proportion, then add water and ball mill for 8 to 20 hours to prepare ceramic slurry;

[0035] (2) Spraying and granulating the ceramic slurry prepared in step (1), prepressing and molding, so as to obtain a green body with a certain density, and improve the charging capacity of the hot-pressing mould;

[0036] (3) Dry the high-density green body prepared in step (2) at 50-70°C for 8-20 hours, and then place it in a hot-pressed sintering furnace, under vacuum or protective atmosphere, at 1450°C-1850°C, 20- 60Mpa hot pressing and sintering for 0.5-5 hours to prepare titanium diboride / silicon carbide ceramic material.

[0037] In some embodiments, the mass ratio of the mixed raw materials to water in s...

Embodiment 1

[0045] Embodiment 1: A kind of preparation method of titanium diboride / silicon carbide composite bulletproof material, the steps are as follows:

[0046] (1) Ball milling and mixing. According to parts by mass, weigh D 50 45 parts of 1.0μm titanium diboride powder, D 50 40 parts of 1.0μm silicon carbide powder, D 50 2 parts of 1.0μm carbon powder, D 50 Add 5 parts of 5.0 μm silicon micropowder, 1 part of tetramethylammonium hydroxide, and 7 parts of phenolic resin to 120 parts of deionized water, use silicon carbide ball stone as the grinding medium, and ball mill in a nylon liner ball mill tank Mix for 10 hours to obtain a ceramic slurry;

[0047] (2) spraying and granulating the ceramic slurry prepared in step (1), controlling the water content of the granulated powder at about 0.8wt%;

[0048] (3) The spray granulation powder obtained in step (2) is pre-pressed into a square green body with a side length of 100mm and a thickness of 30mm, and the green body density is 2...

Embodiment 2

[0054] Embodiment 2: a kind of preparation method of titanium diboride / silicon carbide composite bulletproof material, the steps are as follows:

[0055] (1) Ball milling and mixing. According to parts by mass, weigh D 50 40 parts of 1.0μm titanium diboride powder, D 50 38 parts of 1.0μm silicon carbide powder, D 50 4 parts of 1.0μm carbon powder, D 50 Add 10 parts of 5.0 μm silicon micropowder, 1 part of tetramethylammonium hydroxide, and 7 parts of carboxymethyl cellulose to 129 parts of deionized water, use silicon carbide ball stone as the grinding medium, and ball mill in a nylon liner Ball milling and mixing for 10 hours in the jar made ceramic slurry;

[0056] (2) spraying and granulating the ceramic slurry prepared in step (1), controlling the water content of the granulated powder at about 0.8wt%;

[0057] (3) The spray granulation powder obtained in step (2) is pre-pressed into a square green body with a side length of 100mm and a thickness of 30mm, and the gree...

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Abstract

The invention relates to a titanium diboride / silicon carbide composite bulletproof material and its preparation method and application. It is composed of the following raw materials in mass percentage: titanium diboride powder 20-80wt.%, silicon carbide powder 20-80wt.%, Carbon powder 0.5-15wt.%, silicon powder 0.5-35wt.%, dispersant 0.5-3.0wt.%, binder 1-10wt.%, and the sum of the mass percentages of each component is 100%. The invention not only reduces the sintering temperature, but also promotes the migration and transportation of substances in the liquid phase by introducing silicon as the liquid phase, thereby increasing the density and uniformity of the density. It solves the problems of low density and poor density uniformity of titanium diboride / silicon carbide composite ceramic materials, especially large-thickness bulletproof plates.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, and in particular relates to a titanium diboride / silicon carbide composite bulletproof material and a preparation method thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] In modern warfare, bulletproof materials are one of the key technologies of military weapons. High-performance bulletproof materials are of great significance for improving the battlefield survivability of combatants and combat weapons. Among many bulletproof materials, ceramic materials have become ideal materials for making high-performance bulletproof equipment due to their advantages such as low den...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/58C04B35/565C04B35/622C04B35/645F41H5/00
CPCC04B35/58071C04B35/565C04B35/622C04B35/645F41H5/00C04B2235/422C04B2235/428C04B2235/602C04B2235/96
Inventor 李其松张振昊孙海滨张玉军
Owner LAIWU ADVANCED CERAMIC TECH