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Binder for thermoplastic explosive

A binder and thermoplastic technology, applied in the direction of explosives, non-explosive/non-thermal agent components, offensive equipment, etc., can solve the problems of explosives softening and not forming, oil leakage, and failure to pass high and low temperature cycle tests, etc., to meet the requirements Environmental adaptability requirements, simple preparation process, and the effect of improving the liquid exudation of the powder column

Inactive Publication Date: 2019-09-20
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In order to achieve the goal of "high-efficiency damage", conventional weapons need to further develop ammunition with high lethality and explosive power. The problem of charge penetration safety is becoming more and more prominent. Improving the binder system is one of the key technologies in the design of explosive penetration stability. In recent years, thermoplastic binder systems have been widely used in China, but the binder system During the high-low temperature cycle test of the system explosives, the explosives in the high-temperature section softened and formed and oil leaked, and could not pass the high-low temperature cycle test assessment. 201318008753.3), composed of 20% ethylene-vinyl acetate copolymer, 28% hydroxyl-terminated polybutadiene, 30% diphenylisooctyl phosphate, 22% dioctyl sebacate, the binder is used in explosives In the formula, liquid seeps out of the formed powder column after being placed for a certain period of time, and when the environmental adaptation test is carried out, the explosive itself cannot be formed at 70°C, and there is a phenomenon of free flow. If the warhead is equipped with complex environments such as transportation, storage, and battlefield There are safety hazards under

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] This embodiment is implemented with reference to the following mass percentage composition: 40% ethylene-vinyl acetate copolymer (EVA), 3% liquid paraffin, 18% No. 80 microcrystalline wax, 3% fluorine oil, 36% dioctyl adipate (DOA), in which ethylene-vinyl acetate copolymer (EVA) has a melting point temperature of 85°C to 90°C.

[0012] Preparation process: Add ethylene-vinyl acetate copolymer (EVA) and No. 80 microcrystalline wax in a high-speed rotary mixer, melt and disperse at 120°C, 800±5r / min, and mix for 60 minutes; continue to add liquid paraffin , fluorine oil and dioctyl adipate (DOA), under the conditions of 120°C and 800±5r / min, mixed for 40min to complete the preparation, collected and ready for use.

Embodiment 2

[0014] This embodiment is implemented with reference to the following mass percentage composition: 39% ethylene-vinyl acetate copolymer (EVA), 3% liquid paraffin, 17.7% No. 80 microcrystalline wax, 3.4% fluorine oil, 36.9% dioctyl sebacate (DOS), in which ethylene-vinyl acetate copolymer (EVA) has a melting point of 85°C to 90°C.

[0015] Add ethylene-vinyl acetate copolymer (EVA) and No. 80 microcrystalline wax into a high-speed rotary mixer, melt and disperse at 120°C, 800±5r / min, and mix for 60 minutes; continue to add liquid paraffin and fluorine oil and dioctyl sebacate (DOS), under the conditions of 120°C and 800±5r / min, mixed for 40min to complete the preparation, collected and ready for use.

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Abstract

The invention discloses a binder for a thermoplastic explosive, and is mainly used for solving the problem that oil is impregnated in thermoplastic explosives and explosives flow under a condition of environmental tests in the prior art. The thermoplastic explosive consists of 39%-65% of an ethylene-vinyl acetate copolymer (EVA), 2%-6% of liquid paraffin, 15%-18% of No.80 microcrystalline wax, 1%-9% of fluorine oil and 25%-37% of a plasticizer, wherein the melting point temperature of the ethylene-vinyl acetate copolymer (EVA) is selected to be 85-90 DEG C, and the plasticizer is dioctyl sebacate (DOS) or dioctyl adipate (DOA). According to the invention, the phenomemon of liquid seepage of grain liquid is improved, the liquid seepage value is reduced by 100%, the problem that the explosive cannot be formed by itself at a temperature of 70 DEG C is solved, requirements of environmental adaptability of warheads are met, and safety hidden dangers of the warheads in complex environments such as transportation environments, storage environments, battlefield environments and the like are reduced. The preparation process is simple in process and low in cost and is suitable for large-scale popularization and application.

Description

technical field [0001] The invention relates to a binder suitable for thermoplastic explosives. Background technique [0002] In order to achieve the goal of "high-efficiency damage", conventional weapons need to further develop ammunition with high lethality and explosive power. The problem of charge penetration safety is becoming more and more prominent. Improving the binder system is one of the key technologies in the design of explosive penetration stability. In recent years, thermoplastic binder systems have been widely used in China, but the binder system During the high-low temperature cycle test of the system explosives, the explosives in the high-temperature section softened and formed and oil leaked, and could not pass the high-low temperature cycle test assessment. 201318008753.3), composed of 20% ethylene-vinyl acetate copolymer, 28% hydroxyl-terminated polybutadiene, 30% diphenylisooctyl phosphate, 22% dioctyl sebacate, the binder is used in explosives In the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B23/00
CPCC06B23/009
Inventor 郭昕陈春燕李巍孙培培王晓峰
Owner XIAN MODERN CHEM RES INST
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