A kind of composite plasticizer and preparation method for cl-20 base casting PBX explosive

A technology for compounding plasticizers and explosives, which is used in non-explosive/non-thermal components, explosives, offensive equipment, etc., can solve the problems of large energy consumption and time, and achieve high explosive solid content, good manufacturability, and mechanical properties. controllable effect

Active Publication Date: 2020-09-15
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method not only consumes a lot of energy and time, but also disagrees whether the small molecular impurities and moisture in the processed materials have reached the minimum level.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] According to the second aspect of the present invention, the present invention provides a kind of preparation method for the composite plasticizer of CL-20 base pouring PBX explosive, the method comprises: carry out decompression heating rotary evaporation treatment to ester compound and liquid paraffin , obtaining the composite plasticizer;

[0028] Wherein, the general formula of the ester compound is Among them, R 1 and R 2 each selected from C 6 ~C 12 straight-chain or branched-chain alkyl; based on the total weight of the composite plasticizer, the content of the ester compound is 1-99% by weight, and the content of the liquid paraffin is 1-99% by weight.

[0029] Preferably, based on the total weight of the composite plasticizer, the content of the ester compound is 20-80% by weight, and the content of the liquid paraffin is 20-80% by weight.

[0030] Additionally, for R 1 and R 2 , and the specific elaboration and preferred conditions of the liquid paraff...

Embodiment approach

[0032] According to a preferred embodiment, the preparation method of the present invention specifically includes the following steps:

[0033] 1) Vacuuming: According to the weight ratio, the ester compound and liquid paraffin are sealed in a rotary steamer, and vacuumized;

[0034] 2) Rotary evaporation treatment: the ester compound and liquid paraffin are subjected to rotary evaporation at 50-100°C.

[0035] In step 1), the vacuum is such that the vacuum degree of the rotary evaporator can be -0.1 to 0 MPa, and the purpose is to completely remove the air in the rotary evaporator.

[0036] In step 2), the temperature of the rotary steaming treatment is preferably 70-100°C.

[0037] In step 2), the rotational speed of the rotary steaming treatment may be 10-100 rpm, preferably 20-60 rpm.

[0038] In step 2), the time for the rotary steaming treatment may be 1-4 hours, preferably 2-3 hours.

[0039] According to the third aspect of the present invention, the present inventi...

Embodiment 1

[0053] This example is used to illustrate the composite plasticizer and preparation method for CL-20-based pouring PBX explosives of the present invention.

[0054] The composite plasticizer contains isodecyl nonanoate and liquid paraffin; based on the total weight of the composite plasticizer, the content of isodecyl nonanoate is 33% by weight, and the content of liquid paraffin is 67% by weight.

[0055] The above-mentioned composite plasticizer is prepared through the following specific operations:

[0056] Step 1: Seal isodecyl nonanoate and liquid paraffin in a rotary evaporator, and use a vacuum pump to decompress the rotary evaporator to -0.1MPa;

[0057] Step 2: Heating the temperature to 90° C., adjusting the rotary steaming speed to 50 rpm, and rotary steaming for 2 hours, so as to obtain the composite plasticizer A.

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PUM

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Abstract

The invention provides a composite plasticizer used for a CL-20-based cast PBX explosive, and preparation method thereof. The composite plasticizer contains an ester compound and liquid paraffin; the general formula of the ether compound is shown in the description, and R1 and R2 in the formula are respectively selected from C6-C12 linear or branched alkyl groups. The composite plasticizer comprises, by weight, 1-99% and preferably 20-80% of the ether compound, and 1-99% and preferably 20-80% of the liquid paraffin. The composite plasticizer has the advantages of good intersolubility with HTPB, low water content, high purity, high combustion heat and good vacuum stability, and the CL-20-based cast PBX explosive applying the composite plasticizer has the advantages of high solid content, adjustable mechanical performances, good usability, short preparation time and low energy consumption.

Description

technical field [0001] The invention belongs to the pouring field of CL-20-based PBX explosives, in particular to a composite plasticizer for CL-20-based pouring PBX explosives, and a preparation of a composite plasticizer for CL-20-based pouring PBX explosives method, and the composite plasticizer prepared by the preparation method. Background technique [0002] CL-20 (hexanitrohexaazaisowurtzitane) is a new type of clathrate compound with high density, high energy, high detonation pressure and high detonation velocity discovered and synthesized in recent years. It is the highest energy elemental explosive used so far. However, when CL-20 is applied to the process of pouring PBX explosives, CL-20 will be dissolved in commonly used ester plasticizers, resulting in great energy loss and potential safety hazards. Plasticizers currently used in cast PBX include dioctyl adipate, dibutyl phthalate, etc., which have greater solubility for CL-20. [0003] Due to the above shortco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B23/00C06B45/00
CPCC06B23/00C06B45/00
Inventor 焦清介朱艳丽欧亚鹏郭学永闫石
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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