CN111825950B - High-energy explosive-accompanied pressurizing material and preparation method thereof - Google Patents

Abstract

The invention discloses a high-energy explosion-accompanying pressurization material and a preparation method thereof. The explosion-accompanying pressurization material comprises a matrix, a reinforcing body, an additive and a plasticizer; the material takes a polymer resin as a matrix, and uses a metal mesh or fiber is a reinforcing body; the mass ratio of the matrix, the reinforcing body, the additive and the plasticizer is (3.5-7.0): (14.0-21.0): (70.0-72.0): (4.0-8.0); the preparation method comprises: S1 Weigh the matrix, additives and plasticizers according to the mass ratio to prepare the slurry; S2 compound the slurry with the reinforcement and perform constant temperature aging to obtain the pressurized material with explosion. The explosion-accompanying pressurized material provided by the present invention starts from the design of the composite material, and can greatly improve the energy release efficiency of the material without increasing the total dosage, realize high-energy inactivation, and endow the material with sufficient mechanical strength; The preparation method has the advantages of simple process and low cost, and the prepared material has obvious effect of boosting accompanying explosion, and can be used as a shell replacement material.

Description

A kind of high-energy explosive pressurized material and preparation method thereof

technical field

The invention relates to the technical field of energetic materials, in particular to a high-energy explosion-accompanying pressurized material and a preparation method thereof.

Background technique

At present, the TNT (trinitrotoluene) equivalent of simple explosives is generally only 1 to 1.8 times that of TNT. Even mixed explosives are difficult to exceed 2.5 times. More than 2.5 times is high equivalent. The way to increase the explosive equivalent of explosives mainly relies on An increase in the amount of explosives and an increase in the explosive equivalent. Research in recent years has shown that the energy increase brought by the increase in the amount of explosives and the increase in explosive equivalents is limited, and it will also bring a series of other problems, such as sharply increased sensitivity, reduced safety, and sharply increased costs. and many more. Under the circumstance that the conventional explosive technology is very mature, the practical significance of increasing the yield by developing new explosives is not obvious. The development of technology also puts forward higher requirements for shell materials, such as stronger mechanical properties, higher material density and higher energy density, so that they can be quickly transformed from solid structural materials during explosion. The fine powder material with a large specific surface releases a lot of energy after being detonated.

SUMMARY OF THE INVENTION

The present invention provides a high-energy pressurized material accompanied by an explosion and a preparation method thereof, which are used to overcome the defects of limited energy increment, sharp increase in sensitivity and poor mechanical properties of explosives in the prior art. The energy release efficiency can be greatly improved without increasing the total drug dosage, and the high-energy passivation of the material can also be achieved, and the material can be given sufficient mechanical strength.

In order to achieve the above purpose, the present invention proposes a high-energy explosion-accompanying pressurized material, which includes a matrix, a reinforcing body, an additive and a plasticizer; the material is based on a polymer resin and is reinforced with a metal mesh or fiber. The mass ratio of the matrix, the reinforcing body, the additive and the plasticizer is (3.5-7.0): (14.0-21.0): (70.0-72.0): (4.0-8.0).

In order to achieve the above purpose, the present invention also proposes a method for preparing a high-energy explosion-accompanying pressurized material, comprising the following steps:

S1: According to the mass ratio (3.5～7.0): (14.0～21.0): (70.0～72.0): (4.0～8.0) Weigh the matrix, reinforcement, additives and plasticizer, and mix the matrix, additives and plasticizer uniform to obtain slurry;

S2: compound the slurry with the reinforcement, and perform constant temperature aging to obtain a high-energy explosion-accompanying pressurized material.

Compared with the prior art, the beneficial effects of the present invention are:

1. The high-energy explosion-accompanying pressurized material provided by the present invention includes a matrix, a reinforcement, an additive and a plasticizer; the material is based on a polymer resin, and a metal mesh or fiber is used as the reinforcement; the matrix, reinforcement, additives and The mass ratio of the plasticizer is (3.5-7.0):(14.0-21.0):(70.0-72.0):(4.0-8.0). The explosion-accompanying pressurized material starts from the design of composite materials, and can greatly improve the energy release efficiency of the material without increasing the total dosage, realize high-energy inactivation, and endow the material with sufficient mechanical strength due to the use of reinforcements.

2. The preparation method of the high-energy booster material with explosion provided by the present invention firstly weighs the matrix, the additive and the plasticizer according to the mass ratio to prepare the slurry, and then the slurry and the reinforcement are compounded and subjected to constant temperature aging to prepare the booster with explosion. pressed material. The method is simple in process and low in cost, and the prepared material has obvious effect of boosting with explosion, and is suitable for various shell replacement materials.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the annexes in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Without special instructions, the medicines/reagents used are all commercially available.

The present invention proposes a high-energy explosion-accompanying pressurized material, which includes a matrix, a reinforcement, an additive and a plasticizer; the material uses a polymer resin as a matrix, and a metal mesh or fiber as a reinforcement; the matrix , the mass ratio of reinforcement, additive and plasticizer is (3.5-7.0): (14.0-21.0): (70.0-72.0): (4.0-8.0).

The explosion-accompanying pressurized material provided by the present invention starts from the design of the composite material, can greatly improve the energy release efficiency of the material without increasing the total dosage, realize high-energy inactivation, and endow the material with sufficient energy due to the use of the reinforcement. mechanical strength.

Preferably, the polymer resin is one of epoxy resin, phenolic resin, polyurethane resin and polyurea resin.

Preferably, the polymer resin is a fluorine-modified resin, and the explosion-accompanying pressurization material finally prepared by fluorine-containing modification of the resin has better effect of explosion-accompanying pressurization.

Preferably, the metal mesh is a tungsten mesh or an aluminum mesh; the fibers are chopped strands or three-dimensional braids of fibers.

Preferably, the fibers comprise carbon fibers, Kevlar or aramid fibers.

The selected metal mesh and fiber can not only impart sufficient mechanical strength to the material, but also promote the explosion-accompanying pressurization effect of the final product.

Preferably, the additive is at least one of aluminum powder, hafnium powder, tantalum powder, tungsten powder and zirconium powder.

Preferably, the particle size of the additive is ≤50 μm.

Preferably, the plasticizer is one of dioctyl sebacate (DOS), dibutyl phthalate (DBP), dioctyl dicarboxylate (DOP), butanetriol trinitrate (PTTN). at least one.

The present invention also proposes a method for preparing a high-energy explosion-accompanying pressurized material, comprising the following steps:

S1: According to the mass ratio (3.5～7.0): (14.0～21.0): (70.0～72.0): (4.0～8.0) Weigh the matrix, reinforcement, additives and plasticizer, and mix the matrix, additives and plasticizer uniform to obtain slurry;

S2: composite the slurry and the reinforcement, and perform constant temperature aging to obtain a high-energy pressurized material with explosion.

Preferably, the constant temperature aging is carried out under vacuum conditions, the temperature is 80-120° C., and the time is 24-48 h.

The preparation method of the high-energy explosion-accompanying pressurized material provided by the present invention firstly weighs the matrix, the additive and the plasticizer according to the mass ratio to prepare the slurry, and then compound the slurry and the reinforcing body and perform constant temperature aging to prepare the explosion-accompanying pressurized material . The method is simple in process and low in cost, and the prepared material has obvious effect of boosting with explosion, and is suitable for various shell replacement materials.

Example 1

This embodiment provides a high-energy explosion-accompanying pressurized material, which uses epoxy resin as the matrix and tungsten (W) mesh as the reinforcement, and its basic components are shown in Table 1.1.

The present embodiment provides a method for preparing a high-energy explosion-accompanying pressurized material, comprising the following steps:

S1: Weigh the matrix, the reinforcement, the additive and the plasticizer according to the mass ratio of 3.9:20.2:71.5:4.4, and mix the matrix, the additive and the plasticizer evenly to obtain a slurry;

S2: composite the slurry and the reinforcement, and perform constant temperature aging at a temperature of 100 °C for 40 hours under vacuum conditions to obtain a high-energy explosion-accompanying pressurized material.

The application of the high-energy explosion-accompanying pressurized material provided in this embodiment as a shell material, the specific steps are as follows:

(1) The slurry prepared in this example is compounded with the reinforcing tungsten mesh and wound on the mandrel to obtain a shell prepolymer;

(2) subjecting the prepolymer obtained in step (1) to constant temperature aging at 100° C. for 40 hours under vacuum conditions, removing the core mold after cooling, and punching and milling according to design requirements to obtain an energy-containing shell;

(3) Using the energy-containing shell charge prepared in step (2) (the charge adopts conventional TNT, and the dosage is 100 g) to obtain a high-energy explosion-accompanying pressurized composite shell material.

The shock wave impulse test and shock wave overpressure test were carried out on the high-energy explosion-accompanying pressurized composite shell material. The results are shown in Table 1.2 and Table 1.3. The amount reaches 113.0%, and the effect of boosting with explosion is obvious.

Example 2

This embodiment provides a high-energy explosion-accompanying pressurized material, which uses polyurea resin as the matrix and aramid fiber as the reinforcement, and its basic components are shown in Table 2.1.

The present embodiment provides a method for preparing a high-energy explosion-accompanying pressurized material, comprising the following steps:

S1: Weigh the matrix, the reinforcement, the additive and the plasticizer according to the mass ratio of 6.53:14.5:71.5:7.47, and mix the matrix, the additive and the plasticizer evenly to obtain a slurry;

S2: composite the slurry and the reinforcement, and perform constant temperature aging treatment at 110° C. for 36 hours under vacuum conditions to obtain a high-energy pressurized material with explosion.

The application of the high-energy explosion-accompanying pressurized material provided in this embodiment as a shell material, the specific steps are as follows:

(1) compound the slurry prepared in the present embodiment and the reinforcing aramid fiber and wind it on the core mold to obtain a shell;

(2) subjecting the prepolymer obtained in step (1) to a constant temperature aging treatment at 110° C. for 36 hours under vacuum conditions, removing the core mold after cooling, and punching and milling according to design requirements to obtain an energetic shell;

(3) Using the energy-containing shell charge prepared in step (2) (the charge adopts conventional TNT, and the dosage is 100 g) to obtain a high-energy explosion-accompanying pressurized composite shell material.

The shock wave impulse test and shock wave overpressure test were carried out on the high-energy explosion-accompanying pressurized composite shell material. The results are shown in Table 2.2 and Table 2.3. The amount reaches 118.5%, and the effect of boosting with explosion is obvious.

Table 1.1 Basic components of the explosion-accompanying pressurized material in Example 1

Table 1.2 Test results of shock wave impulse of the pressurized material with explosion in Example 1

Table 1.3 The shock wave overpressure test results of the pressurized material with explosion in Example 1

Table 2.1 Basic components of the pressurized material with explosion in Example 2

Table 2.2 Shock wave impulse test results of the pressurized material with explosion in Example 2

Table 2.3 The shock wave overpressure test results of the pressurized material with explosion in Example 2

The above descriptions are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Under the inventive concept of the present invention, the equivalent structure transformation made by the contents of the description and the attached tables of the present invention, or the direct/indirect application Other related technical fields are included in the scope of patent protection of the present invention.

Claims (7)

1. a high-energy pressurized material with explosion, is characterized in that, described material comprises matrix, reinforcement, additive and plasticizer; Described material is matrix with macromolecular resin, and is reinforcement with metal mesh; The mass ratio of matrix, reinforcement, additive and plasticizer is (3.5-7.0): (14.0-21.0): (70.0-72.0): (4.0-8.0); The polymer resin is one of epoxy resin, phenolic resin, polyurethane resin and polyurea resin; The metal mesh is a tungsten mesh or an aluminum mesh; The material also includes a curing agent. 2 . The high-energy explosion-accompanying pressurized material according to claim 1 , wherein the polymer resin is a fluorine-modified resin. 3 . 3 . The high-energy explosion-accompanying pressurized material according to claim 1 , wherein the additive is at least one of aluminum powder, hafnium powder, tantalum powder, tungsten powder and zirconium powder. 4 . 4 . The high-energy explosion-accompanying pressurized material according to claim 3 , wherein the particle size of the additive is less than or equal to 50 μm. 5 . 5. high-energy pressurized material with explosion as claimed in claim 1, is characterized in that, described plasticizer is dioctyl sebacate, dibutyl phthalate, dioctyl diformate and butylated triacetate At least one of alcohol trinitrates. 6. A method for preparing a high-energy pressurized material with explosion according to any one of claims 1 to 5, characterized in that, comprising the following steps: S1: According to the mass ratio (3.5～7.0): (14.0～21.0): (70.0～72.0): (4.0～8.0) Weigh the matrix, reinforcement, additives and plasticizer, and mix the matrix, additives and plasticizer uniform to obtain slurry; S2: compound the slurry with the reinforcement, and perform constant temperature aging to obtain a high-energy explosion-accompanying pressurized material. 7 . The preparation method according to claim 6 , wherein the constant temperature aging is carried out under vacuum conditions, the temperature is 80-120° C., and the time is 24-48 h. 8 .