Pouring sealant for filling gap between warhead charge and shell

A warhead and potting glue technology, applied in the field of potting glue, can solve problems such as falling off and loose charge, and achieve the effects of increasing binding force, easy potting and reducing the cost of charge process.

Inactive Publication Date: 2013-07-17
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of this gap will cause the warhead to loosen and fall off the charge during the process of transfer, launch, flight, etc., causing safety accidents, or cause hot spots in advance due to deformation friction and air gap

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1

[0022] A potting sealant for filling the gap between warhead charges and shells. Its composition includes hydroxyl-terminated polybutadiene (HTPB), curing agent, plasticizer and curing catalyst, wherein R=[NCO] and curing agent in the curing agent The molar ratio of [OH] in the hydroxyl-terminated polybutadiene (HTPB) is 1.2, the plasticizer content is 1.5 times the content of hydroxypolybutadiene (HTPB), and the curing catalyst content is hydroxy-terminated polybutadiene (HTPB). ) 0.01wt% of content.

[0023] Further, the curing agent is isophorone diisocyanate (IPDI) or 1,6-hexamethylene diisocyanate (HDI).

[0024] Further, the plasticizer is isodecyl nonanoate (TOA), bis(2-ethylhexyl) sebacate or dioctyl sebacate (DOS).

[0025] Further, the curing catalyst is dibutyl tin dilaurate (DBTL).

Example Embodiment

[0026] Example 2

[0027] A potting glue for filling the gap between warhead charge and shell. Its composition includes hydroxy-terminated polybutadiene (HTPB) and a curing agent, wherein R=[NCO] and hydroxy-terminated polybutadiene ( The molar ratio of [OH] in HTPB) is 0.8.

[0028] Further, the curing agent is toluene diisocyanate (TDI) or diphenylmethane-4,4'-diisocyanate (MDI).

Example Embodiment

[0029] Example 3

[0030] A potting sealant for filling the gap between warhead charges and shells. Its composition includes hydroxyl-terminated polybutadiene (HTPB), curing agent, plasticizer and curing catalyst, wherein R=[NCO] and curing agent in the curing agent The molar ratio of [OH] in the hydroxyl-terminated polybutadiene (HTPB) is 1, the plasticizer content is 0.75 times the content of hydroxypolybutadiene (HTPB), and the curing catalyst content is hydroxy-terminated polybutadiene (HTPB). ) 0.005wt% of content.

[0031] Further, the curing agent is polyphenylpolymethylene polyisocyanate (PAPI) or polyphenylpolymethylene polyisocyanate (PAPI).

[0032] Further, the plasticizer is dioctyl adipate (DOA), dioctyl phthalate (DOP), dioctyl phthalate (DOP) or dibutyl phthalate (DBP). ).

[0033] Further, the curing catalyst is a metal salt, such as tin octoate, lead octoate, zinc octoate, or tertiary amines, such as triethylene diamine.

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PUM

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Abstract

The invention discloses a pouring sealant for filling a gap between a charge and a shell of a warhead. The pouring sealant comprises hydroxyl-terminated polybutadiene, a curing agent, a plasticizer and a curing catalyst, wherein mol ratio of R=[NCO] in the curing agent to [OH] in the hydroxyl-terminated polybutadiene is 0.8-1.2, content of the plasticizer is 0-1.5 times that of the hydroxyl-terminated polybutadiene, and the content of the curing catalyst is 0-0.01wt% that of the hydroxyl-terminated polybutadiene. The pouring sealant disclosed by the invention can be used for effectively solving the problem of an inherent gap between the charge and the shell of the warhead of the conventional weapon, so that use safety performance of the warhead and penetration stability to a target are greatly improved; and by adopting the pouring sealant disclosed by the invention, fabricated charging can be carried out without prefabricating a grain, so that the warheads in various sizes and shapes are directly poured and moulded, the mass production capability is greatly improved and the charging process cost is greatly reduced.

Description

technical field [0001] The invention relates to the field of potting glue, in particular to a potting glue that can be cross-linked and cured at room temperature. conditioned adhesive system. Background technique [0002] At present, the charge of conventional weapon warheads usually adopts melt-cast explosives or castable heat-curable explosives. During the casting process, the charge is heated and solidified and cooled to shape, and the volume will shrink and loosen (shrinkage). A small gap is formed between the medicine and the inner wall of the shell. The existence of this gap will cause the warhead to loosen and fall off the charge during the process of transfer, launch, flight, etc., causing safety accidents, or cause hot spots in advance due to deformation friction and air gap extrusion when the target penetrates the target, which will affect the combat Therefore, in order to meet the safety requirements of the warhead, the gap between the drug and the shell must b...

Claims

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Application Information

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IPC IPC(8): C09J175/04C09J11/04C08G18/62
Inventor 黄勇蒋小军刘绪望罗观魏新国刘宪金
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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