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Quickly-cured GAP (Glycidyl Azide Polymer)-based mixture

A rapid curing and mixture technology, applied in the direction of offensive equipment, compressed gas generation, explosives, etc., can solve the problems of low curing rate, long curing time, and affecting the performance of the cured product, and achieve the advantages of small glue viscosity and short curing time Effect

Inactive Publication Date: 2018-02-09
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cyanate group in this kind of curing agent reacts with the hydroxyl group in GAP to form a cured product with a certain shape, which is characterized by low curing rate and long curing time, and the cyanate group is easy to react with water to affect the performance of the cured product

Method used

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  • Quickly-cured GAP (Glycidyl Azide Polymer)-based mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The present invention is implemented with reference to the following composition by mass percentage: 90% GAP, 9.99% dipropynyl succinate, and 0.01% triphenyl bismuth. Wherein the number average molecular weight of GAP is 3698g / mol, and the N content in GAP is 41.72%.

[0015] Preparation:

[0016] (1) Glue preparation

[0017] Weigh 9.99g of dipropynyl succinate and place it in a rotary mixer, let stand at 60°C for 10 minutes, add 90g of GAP, stir in vacuum for 20 minutes, add 0.01g of triphenylbismuth and stir for 10 minutes to obtain a uniformly mixed glue.

[0018] (2) sample preparation

[0019] The glue solution was poured into the tetrafluoroethylene mold by vacuum pouring process, and cured at 60°C until the hardness remained constant to test the curing time and performance test.

[0020] The curing time of Example 1 was reduced to 20 hours from 60 hours when TDI was used as the curing agent and 72 hours when N-100 was used as the curing agent, and the curing ...

Embodiment 2

[0022] The present invention is implemented with reference to the following composition by mass percentage: 88.89% GAP, 11.10% dipropynyl succinate, and 0.01% triphenyl bismuth. Wherein the number average molecular weight of GAP is 3698g / mol, and the N content in GAP is 41.72%.

[0023] Preparation:

[0024] (1) Glue preparation

[0025] Weigh 11.10g of dipropynyl succinate and place it in a rotary mixer, let stand at 60°C for 10 minutes, add 88.89g of GAP, stir in vacuum for 20 minutes, add 0.01g of triphenylbismuth and stir for 10 minutes to obtain a uniformly mixed glue.

[0026] (2) sample preparation

[0027] The glue solution was poured into the tetrafluoroethylene mold by vacuum pouring process, and cured at 60°C until the hardness remained constant to test the curing time and performance test.

[0028] The curing time of Example 2 is reduced to 18 hours from 60 hours when TDI is used as the curing agent and 72 hours when N-100 is used as the curing agent, and the cu...

Embodiment 3

[0030] The present invention is implemented with reference to the following composition by mass percentage: 91.67% GAP, 8.33% dipropynyl succinate, and 0.01% triphenylbismuth. Wherein the number average molecular weight of GAP is 3698g / mol, and the N content in GAP is 41.72%.

[0031] Preparation:

[0032] (1) Glue preparation

[0033] Weigh 8.33g of dipropynyl succinate and place it in a rotary mixer, let stand at 60°C for 10 minutes, add 91.67g of GAP, stir in vacuum for 20 minutes, add 0.01g of triphenylbismuth and stir for 10 minutes to obtain a uniformly mixed glue.

[0034] (2) sample preparation

[0035] The glue solution was poured into the tetrafluoroethylene mold by vacuum pouring process, and cured at 60°C until the hardness remained constant to test the curing time and performance test.

[0036] The curing time of Example 3 was reduced to 22 hours from 60 hours when TDI was used as the curing agent and 72 hours when N-100 was used as the curing agent, and the cu...

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Abstract

The invention discloses a quickly-cured GAP (Glycidyl Azide Polymer)-based mixture and aims at solving the problems that an existing cyanate curing agent is long in curing time, and a curing system iseasily affected by ambient humidity. The quickly-cured GAP-based mixture is prepared from the following components in percentage by mass: 88.89 to 91.67 percent of GAP, 8.33 to 11.10 percent of dipropargyl alcohol succinate and 0.001 percent of triphenyl bismuth, wherein the number-average molecular weight of the GAP is 3698g / mol, and the content of N in the GAP is 41.72 percent. The curing timeof a formula is reduced to below 22h, tensile strength of a condensate in the formula is greater than that of a cyanate / GAP curing system, and the viscosity of the condensate in the formula is smallerthan that of the cyanate / GAP curing system. The invention provides a technical means for application of the GAP in an explosive formula.

Description

technical field [0001] The invention relates to a fast-curing mixture of GAP (glycidyl polyazide), in particular to a mixture of acetylenic compounds as a curing agent. Background technique [0002] The energy of explosives in detonation is directly affected by the components of mixed explosives and the structure of explosive charges. Measures such as selecting high-energy explosive components and improving the bonding state between explosive components have significantly improved the energy output characteristics of mixed explosives, and greatly improved the damage capability of explosives. Under the condition that the solid type and content of the traditional charge formula remain unchanged, the energy of the PBX can be increased to a certain extent by introducing energetic binders into the PBX formula. [0003] GAP is a hydroxyl-terminated prepolymer with an azidomethyl group on the polyether main chain. Many properties are similar to HTPB (hydroxyl-terminated polybutadi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/00C08G65/329C06B23/00C06B43/00C06D5/00
CPCC08G65/00C06B23/009C06B43/00C06D5/00
Inventor 陈春燕余然王晓峰郑亚峰南海
Owner XIAN MODERN CHEM RES INST
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