阅读说明：本技术 一种高爆容型增效含能微弹丸 (High-explosive-capacity synergistic energetic micro-projectile ) 是由 束庆海 赵帅 石艳松 王东旭 吕席卷 蒋教平 束红年 于 2021-07-09 设计创作，主要内容包括：本发明涉及一种高爆容型增效含能微弹丸,属于特种毁伤领域。该含能微弹丸由氟聚物基含能微弹丸基础配方和高爆容增效剂组成。所得产品其突出特点在于具有增加爆热的毁伤效果,可增至原有配方的110％～170％,且具有无硫、无氮、微烟、高爆容、高安全性等优势,可广泛应用于防空反导、破甲毁伤等领域。(The invention relates to a high-explosive-capacity synergistic energetic micro-projectile, belonging to the field of special damage. The energetic micro-pellet consists of a basic formula of a fluorine polymer-based energetic micro-pellet and a high-explosive-volume synergist. The obtained product has the outstanding characteristics of increasing the damage effect of explosive heat to 110-170% of the original formula, having the advantages of no sulfur, no nitrogen, little smoke, high explosive capacity, high safety and the like, and being widely applied to the fields of air defense, nail damage and the like.)

1. The high-detonation-volume synergistic energetic micro-projectile is characterized by consisting of a fluoropolymer-based energetic micro-projectile base formula and a high-detonation-volume synergist.

2. The high-explosive capacity synergistic energetic micro-pellet as claimed in claim 1, wherein the fluoropolymer is perfluoropolyether, polyfluoroolefin, polyfluoroalkane or perfluoroalkoxy resin.

3. The high-explosive-capacity synergistic energetic micro-pellet as claimed in claim 1, wherein the active metal powder of the fluoropolymer-based energetic micro-pellet base formula is spherical aluminum powder or spherical magnesium powder.

4. The synergistic energetic micro-projectile of high detonation volume type as claimed in claim 1, wherein said synergistic agent of high detonation volume is chlorate, perchlorate or permanganate.

Technical Field

The invention relates to a high-explosive-capacity synergistic energetic micro-projectile, belonging to the technical field of special damage.

Background

The energy-containing micro-projectile is a newly developed new concept energy-destroying material, and the principle is that after a high-molecular oxidant and a metal reducing agent are designed through a core-shell structure, rapid and violent redox reaction occurs under the initiation of high energy such as high-speed impact, high-temperature ignition or laser ignition, so that high temperature is released outwards, thousands of times of volume expansion is realized by utilizing the gaseous effect of metal fluoride under the high-temperature condition, so that overpressure effect is further generated, high-temperature and overpressure composite destroying effects are formed on a target, and the energy-containing micro-projectile has wide application prospect in the fields of air defense, reverse guidance, armor destruction and the like.

In recent years, a series of high-molecular-base energetic micro pill formulas are developed by research and development teams including Beijing university of science and engineering. The high molecular fluorine polymer based energetic micro-projectile has excellent comprehensive performance, especially safety performance and environmental protection performance. The basic principle of the formula is that the violent oxidation-reduction reaction between the high molecular fluorine polymer and the active metal instantly releases high temperature of more than 3000 ℃ to the outside so as to perform expansion work on air. However, the raw materials such as the high molecular fluorine polymer and the spherical active metal used in the formulation are expensive. In order to meet the requirements of wide popularization and application, key countermeasures need to be made on cost reduction. Among them, the reduction of the amount is one of the approaches to solve this problem. However, the dosage is reduced, and the problem of insufficient power is also brought. Aiming at the problems, on the premise of not reducing the total damage power, the formula of the fluoropolymer-based energetic micro-projectile with damage synergy per unit mass is developed, so that the formula has very important significance for reducing the dosage of the fluoropolymer-based energetic micro-projectile to realize cost control.

Disclosure of Invention

The invention aims to provide a high-explosive-capacity synergistic energetic micro-projectile, belonging to the technical field of special damage. The energetic micro-pellet consists of a basic formula of a fluorine polymer-based energetic micro-pellet and a high-explosive-volume synergist.

The preparation method adopts the processes of chemical modification, coating, powder mixing, granulation, drying and the like, has simple process, no special process requirement and low cost, and is convenient for batch production. The obtained product has the advantages of no sulfur and nitrogen, slight smoke, environmental protection, low mechanical sensitivity, high safety and the like, and can be widely applied to the production of energetic micro-projectile pills.

A high-explosive-capacity synergistic energetic micro-projectile is composed of a fluoropolymer-based energetic micro-projectile base formula and a high-explosive-capacity synergistic agent.

The preparation method of the high-detonation-volume synergistic energetic micro-projectile comprises the following steps:

the method comprises the following steps: obtaining an energetic micro-pellet basic formula A based on fluoropolymer/active metal powder by utilizing chemical modification, coating, powder mixing and drying processes;

step two: the energy-containing micro-projectile is obtained by adding a high-explosive-capacity synergist into a basic formula A of the energy-containing micro-projectile and performing powder mixing and granulation processes.

The fluoropolymer of the first step is: perfluoropolyethers, polyfluoroolefins, polyfluoroalkanes, or perfluoroalkoxy resins; the active metal powder is spherical aluminum powder or spherical magnesium powder.

The high explosive capacity type synergist in the second step is chlorate, perchlorate or permanganate.

Advantageous effects

1. A high-explosive-capacity energetic micro-projectile consists of a fluoropolymer-based energetic micro-projectile basic formula and a high-explosive-capacity synergist. The conventional metal powder, high-molecular fluoropolymer, binder and high-detonation-volume synergist are used as raw materials; the process of chemical modification, coating, powder mixing, granulation, drying and the like is adopted, the process is simple, no special process requirement exists, the cost is low, and the batch production is convenient.

2. Compared with the conventional fluoropolymer/active metal powder system energetic micro-projectile, the high-explosive-capacity energetic micro-projectile prepared by the invention obviously improves the explosive capacity value and the damage effect, and can be widely applied to the production of energetic micro-projectiles.

Detailed Description

The present invention will be described in further detail with reference to specific examples, which are not intended to limit the present invention in any manner. Unless otherwise indicated, the various starting materials used in the examples of the present invention are either conventionally available commercially or prepared according to conventional methods in the art using equipment commonly used in the laboratory. Unless defined or stated otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Example 1

A preparation method of a high-detonation-volume-type synergistic energetic micro-projectile comprises the following specific steps:

(1) modified coating

Surface modification: adding a silane coupling agent into ethyl acetate, stirring for 0.5h, dispersing active metal powder into the solution under the protection of inert atmosphere, soaking for 6h, filtering and drying to obtain modified metal powder;

coating: and adding the binder into ethyl acetate, stirring until the binder is completely dissolved, dispersing the modified metal powder into the solution, and stirring for 2 hours to obtain a dispersion liquid of the binder-coated metal powder.

(2) Preparation by molding

Mixing powder: adding a high-molecular fluorine polymer and a high-explosive capacity synergist potassium chlorate into the dispersion liquid obtained by coating the metal powder on the polyurethane elastomer, and stirring for 4 hours to obtain slurry;

and (3) granulation: and extruding and granulating the obtained slurry through a granulator with a particle plate of 2mm, and drying the obtained particles at the drying temperature of 60 ℃ to obtain the final product.

Compared with the high-explosion-capacity synergist without the dosage, the hole expanding capacity of the energetic micro-pill with the mass of 1.5g on a 5mmQ235A steel plate is improved to 8.43mm from the original 7.33mm hole diameter, and is improved by 15%.

Example 2

A preparation method of a high-detonation-volume-type synergistic energetic micro-projectile comprises the following specific steps:

(1) modified coating

Surface modification: adding a silane coupling agent into ethyl acetate, stirring for 0.5h, dispersing active metal powder into the solution under the protection of inert atmosphere, soaking for 6h, filtering and drying to obtain modified metal powder;

coating: and adding the binder into ethyl acetate, stirring until the binder is completely dissolved, dispersing the modified metal powder into the solution, and stirring for 2 hours to obtain a dispersion liquid of the binder-coated metal powder.

(2) Preparation by molding

Mixing powder: adding a high-molecular fluorine polymer and a high-explosive-capacity synergist potassium perchlorate into the dispersion liquid obtained by coating the metal powder on the polyurethane elastomer, and stirring for 4 hours to obtain slurry;

and (3) granulation: and extruding and granulating the obtained slurry through a granulator with a particle plate of 2mm, and drying the obtained particles at the drying temperature of 60 ℃ to obtain the final product.

Compared with the high-explosion-capacity synergist without the dosage, the hole expanding capacity of the energetic micro-pill with the mass of 1.5g on a 5mmQ235A steel plate is improved to 9.75mm from the original 7.81mm hole diameter, and is improved by 25%.

Example 3

A preparation method of a high-detonation-volume-type synergistic energetic micro-projectile comprises the following specific steps:

(1) modified coating

Surface modification: adding a silane coupling agent into ethyl acetate, stirring for 0.5h, dispersing active metal powder into the solution under the protection of inert atmosphere, soaking for 6h, filtering and drying to obtain modified metal powder;

coating: and adding the binder into ethyl acetate, stirring until the binder is completely dissolved, dispersing the modified metal powder into the solution, and stirring for 2 hours to obtain a dispersion liquid of the binder-coated metal powder.

(2) Preparation by molding

Mixing powder: adding a high-molecular fluorine polymer and a high-explosion-capacity synergist potassium permanganate into the dispersion liquid obtained by coating the metal powder on the polyurethane elastomer, and stirring for 4 hours to obtain slurry;

and (3) granulation: and extruding and granulating the obtained slurry through a granulator with a particle plate of 2mm, and drying the obtained particles at the drying temperature of 60 ℃ to obtain the final product.

Compared with the high-explosive-capacity synergist without the dosage, the hole expanding capacity of the energetic micro-pill with the mass of 1.5g on a 5mmQ235A steel plate is improved to 13.16mm from the original 7.93mm hole diameter, and is improved by 66%.

The above detailed description is intended to illustrate the objects, aspects and advantages of the present invention, and it should be understood that the above detailed description is only exemplary of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.