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Trifluoromethyl substituted azide polymer and preparation method thereof

A technology of trifluoromethyl and polymer, which is applied in the field of trifluoromethyl-substituted azide polymer and its preparation, trifluoromethyl-substituted polyazide glycidyl ether and its preparation field, which can solve the viscosity of GAP adhesive Large hygroscopicity and other issues

Active Publication Date: 2016-11-09
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the problems of high viscosity and hygroscopicity of existing GAP adhesives, and provide a trifluoromethyl-substituted azide polymer with better comprehensive performance and its preparation method

Method used

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  • Trifluoromethyl substituted azide polymer and preparation method thereof
  • Trifluoromethyl substituted azide polymer and preparation method thereof
  • Trifluoromethyl substituted azide polymer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Weigh and add epichlorohydrin (138.8g, 1.5mol), trifluoroethanol (30g, 0.3mol) and NaOH (18g, 0.45mol) successively in the reaction flask equipped with mechanical stirring rod, reflux condenser and thermometer, stir To complete dissolution, and rapidly stirred at 80 ℃ for 12h. After the reaction is completed, the organic phase is separated, washed and dried, and rectified by a distillation tower to obtain trifluoroethanol methyl ether-based oxirane.

[0037] Add butanediol (0.9g, 10mmol), boron trifluoride diethyl ether (0.43g, 3mmol) and 20mL dichloromethane sequentially into a reaction flask equipped with mechanical stirring, a thermometer and a reflux device, stir at 25°C for 30min, and use A constant pressure titration funnel was added dropwise a mixed monomer of epichlorohydrin (22.2 g, 0.24 mol) and trifluoroethanol methyl ether oxirane (9.36 g, 0.06 mol) to form a reaction system. The reaction system was stirred and reacted at 25° C. for 24 h. After the reaction...

Embodiment 2

[0052] Weigh and add epichlorohydrin (27.6g, 0.3mol), trifluoroethanol (30g, 0.3mmol) and NaOH (24g, 0.6mol) successively in the reaction flask equipped with mechanical stirring rod, reflux condenser and thermometer, stir To completely dissolve, and react rapidly at 100°C for 72h. After the reaction, the organic phase was separated, washed and dried, and rectified by a distillation tower to obtain trifluoroethanol methyl ether oxirane.

[0053] Add butanediol (0.9g, 10mmol), boron trifluoride diethyl ether (0.29g, 2mmol) and 60mL dichloromethane successively into the reaction flask equipped with mechanical stirring, thermometer and reflux device, stir at 25°C for 30min, use A constant pressure titration funnel was added dropwise a mixed monomer of epichlorohydrin (46.6 g, 0.5 mol) and trifluoroethanol methyl ether oxirane (15.6 g, 0.1 mol) to form a reaction system. The reaction system was stirred and reacted at -10°C for 72 hours. After the reaction was completed, 60 mL of a...

Embodiment 3

[0056] Add epichlorohydrin (276g, 3mol), trifluoroethanol (30g, 0.3mol) and NaOH (12g, 0.3mol) and NaOH (12g, 0.3mol) successively in the reaction bottle equipped with mechanical stirring rod, reflux condenser and thermometer, stir until completely Dissolved and reacted with rapid stirring at 60°C for 6h. After the reaction is completed, the organic phase is separated, washed and dried, and rectified by a distillation tower to obtain trifluoroethanol methyl ether-based oxirane.

[0057] Add butanediol (0.9g, 10mmol), boron trifluoride diethyl ether (1.15g, 8mmol) and 20mL dichloromethane sequentially into a reaction flask equipped with mechanical stirring, a thermometer and a reflux device, stir at 25°C for 30min, and use A constant pressure titration funnel was added dropwise a mixed monomer of epichlorohydrin (1.85 g, 0.02 mol) and trifluoroethanol methyl ether oxirane (15.6 g, 0.1 mol) to form a reaction system. The reaction system was stirred and reacted at 30° C. for 72 ...

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Abstract

The invention relates to a trifluoromethyl substituted azide polymer and a preparation method thereof. The structural formula of the trifluoromethyl substituted azide polymer is as shown in the description, wherein x is an integer ranging from 3 to 5, m is an integer ranging from 1 to 30, and n is an integer ranging from 1 to 30. The preparation method comprises the steps that trifluoroethanol and epichlorohydrin which serve as the raw materials are subjected to a debydrochlorination reaction, and trifluoroethanol methyl ether ethylene oxide is obtained; trifluoroethanol methyl ether ethylene oxide and epichlorohydrin are both monomers, and the trifluoromethyl substituted azide polymer is obtained through the steps of cation ring opening polymerization, azidation and the like. A trifluoromethyl substituted azide polymer synthetic route is economical and practical, and a wide application value in the aspect of energetic binders is achieved.

Description

technical field [0001] The present invention relates to a kind of trifluoromethyl (-CF 3 ) substituted azide polymer and preparation method thereof. More specifically, it relates to a trifluoromethyl-substituted polyazide glycidyl ether and a preparation method thereof, belonging to the technical fields of chemical synthesis and propellant application. Background technique [0002] The use of energetic binders to replace traditional inert binders meets the current high-energy requirements of high-performance PBX explosives, and has become a research focus in this research field. The most representative binder is polyazide glycidyl ether (GAP), whose main chain is a polyether structure, and the side chain contains azide functional groups, which has the characteristics of high energy level. However, the repeating unit in the molecular structure of GAP is relatively regular and has a certain degree of crystallinity, resulting in a high viscosity; and the polyether structure o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/333C08G65/24
CPCC08G65/24C08G65/33306C08G2650/48C08G2650/50
Inventor 徐明辉卢先明莫洪昌姬月萍葛忠学闫峥峰陆婷婷
Owner XIAN MODERN CHEM RES INST
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