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Preparation method of sympathetic detonation prevention polyurea coating for projectile body

A technology of explosive polymerization and projectiles, which is applied in polyurea/polyurethane coatings, anti-corrosion coatings, fire-proof coatings, etc., can solve the problems of ammunition detonation, etc., and achieve the effects of maintaining strength performance, good weather resistance, and simple production process

Active Publication Date: 2020-12-29
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the explosive spread of self-explosion in the case of ammunition encountering accidents, accidental stimulation or being attacked in the process of production, transportation, storage and use, or the problem caused by being hit by enemy missiles during combat. The safety problem of ammunition detonation caused by the high temperature environment caused by the explosion spread improves the safety of the ammunition itself, thus providing a preparation method for the anti-detonation polyurea coating of the ammunition. The method is easy to operate and the obtained coating has good properties. Excellent mechanical properties, excellent heat insulation and flame retardant effects;

Method used

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  • Preparation method of sympathetic detonation prevention polyurea coating for projectile body
  • Preparation method of sympathetic detonation prevention polyurea coating for projectile body
  • Preparation method of sympathetic detonation prevention polyurea coating for projectile body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An anti-explosion polyurea coating for projectiles, the components and the mass percentages thereof are as follows:

[0027]

[0028] Weigh 600g of TDI prepolymer, 150g of silicon carbide ceramic powder, 45g of organic zirconate coupling agent and 3000g of tetrahydrofuran solution according to the mass ratio, add the organic zirconate coupling agent into the tetrahydrofuran solution, and ultrasonically disperse for 30 minutes. Obtain mixed solution A; then add TDI prepolymer and silicon carbide ceramic powder into mixed solution A, perform mechanical stirring at a stirring rate of 300-500r / min, and obtain mixed solution B after 1-2 hours; mix mixed solution B After suction filtration, put it into a blast oven at 70-80°C for drying, take it out for 2-3 hours and grind it finely to obtain 789.67g of modified TDI prepolymer;

[0029] Weigh 10g of sisal cellulose powder, 40g of ammonium polyphosphate, 10g of montmorillonite, 4.2g of organic zirconate coupling agent and 1...

Embodiment 2

[0034] An anti-explosion polyurea coating for projectiles, the components and the mass percentages thereof are as follows:

[0035]

[0036] Weigh 600g of TDI prepolymer, 150g of silicon carbide ceramic powder, 45g of organic zirconate coupling agent and 3000g of tetrahydrofuran solution according to the mass ratio, add the organic zirconate coupling agent into the tetrahydrofuran solution, and ultrasonically disperse for 30 minutes. Obtain mixed solution A; then add TDI prepolymer and silicon carbide ceramic powder into mixed solution A, perform mechanical stirring at a stirring rate of 300-500r / min, and obtain mixed solution B after 1-2 hours; mix mixed solution B After suction filtration, put it into a blast oven at 70-80°C for drying, take it out for 2-3 hours and grind it finely to obtain 788.73g of modified TDI prepolymer;

[0037]Weigh 8g of sisal cellulose powder, 32g of ammonium polyphosphate, 8g of montmorillonite, 3.3g of organic zirconate coupling agent and 80g ...

Embodiment 3

[0042] An anti-explosion polyurea coating for projectiles, the components and the mass percentages thereof are as follows:

[0043]

[0044]

[0045] Weigh 600g of TDI prepolymer, 150g of silicon carbide ceramic powder, 45g of organic zirconate coupling agent and 3000g of tetrahydrofuran solution according to the mass ratio, add the organic zirconate coupling agent into the tetrahydrofuran solution, and ultrasonically disperse for 30 minutes. Obtain mixed solution A; then add TDI prepolymer and silicon carbide ceramic powder into mixed solution A, perform mechanical stirring at a stirring rate of 300-500r / min, and obtain mixed solution B after 1-2 hours; mix mixed solution B After suction filtration, put it into a blast oven at 70-80°C for drying, take it out for 2-3 hours and grind it finely to obtain 788.82g of modified TDI prepolymer;

[0046] Weigh 4.5g of sisal cellulose powder, 18g of ammonium polyphosphate, 4.5g of montmorillonite, 1.6g of organic zirconate coupli...

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Abstract

The invention relates to a preparation method of a sympathetic detonation prevention polyurea coating for a projectile body, and belongs to the field of projectile body system defense and polymer composite material preparation. The coating disclosed by the invention comprises the following components: a modified TDI prepolymer, polyaspartic acid ester, modified ammonium polyphosphate, melamine, silicon dioxide whiskers, talcum powder, calcium phosphate and silicone acrylic emulsion. According to the preparation method of the sympathetic detonation preventing polyurea coating for the projectilebody, the polyurea coating is selected as a coating matrix, and has the advantages of being good in weather resistance, capable of being used for a long time in a severe environment, high in thermalstability, capable of keeping the original molecular structure and property at a high temperature, good in mechanical property, and excellent in explosion-proof property, and can effectively protect the ammunition body.

Description

technical field [0001] The invention relates to a method for preparing an anti-explosion polyurea coating for an missile, and belongs to the field of missile system defense and polymer composite material preparation. Background technique [0002] With the continuous development of economy and society and the continuous improvement of the degree of globalization, the international situation has become more complex and changeable. The main theme of today's world is still peace and development, but local conflicts in the region and rampant terrorist activities have led to increased instability in the international community, and at the same time, conflicts have become more complex and acute. [0003] As the largest wartime consumable in war, ammunition is a payload that can effectively damage targets and is the core of completing combat missions or missions. Ammunition generally refers to a device that has a shell, contains energetic materials such as explosives, gunpowder, or...

Claims

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Application Information

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IPC IPC(8): C09D175/02C09D5/18C09D7/61C09D7/62C09D7/63C09D7/65C09D5/08
CPCC08K2003/323C08K2201/014C08L2201/02C09D5/08C09D5/185C09D175/02C09D7/61C09D7/62C09D7/63C09D7/65C09D7/70C08L43/04C08K13/06C08K9/04C08K9/02C08K9/08C08K3/32C08K5/34922C08K7/10C08K3/34
Inventor 刘吉平李年华
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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