Acryloyloxy-terminated polyether curing agent

A technology of acryloyloxypolyether, acryloyloxypolypropylene oxide methyl glycoluril, applied in the direction of polyether adhesive, adhesive, adhesive type, etc., can solve the problem of propellant safety and reliability problems such as decline, impact on mechanical properties, and decrease in propellant density

Active Publication Date: 2020-09-29
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

GAP is generally used in conjunction with an isocyanate curing agent to cure the polyurethane elastomer through the reaction between the terminal hydroxyl group and the isocyanate group. However, the isocyanate curing agent in this type of curing system is highly active and easily reacts with water or protonic acid to generate CO2. Many pores are formed during the curing process of the propellant, which reduces the density of the propellant and affects its mechanical properties. At the same time, the safety and reliability of the propellant are also reduced.

Method used

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  • Acryloyloxy-terminated polyether curing agent
  • Acryloyloxy-terminated polyether curing agent
  • Acryloyloxy-terminated polyether curing agent

Examples

Experimental program
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Embodiment 1

[0031] (1) Synthesis of 1,3,4,6-tetrahydroxypolypropylene oxide methyl glycoluril

[0032] In a four-neck round bottom flask equipped with a mechanical stirrer, a thermometer, a reflux condenser and a dropping funnel, add 2.62g (0.01mol) of 1,3,4,6-tetramethylol glycoluril and 20mL of CH 2 Cl 2 , add 0.85g (0.006mol) boron trifluoride · diethyl ether complex under stirring, continue to stir for 30min and start to slowly add 11.62g (0.2mol) of propylene oxide dropwise, continue to react for 24h after the dropwise addition, and then add 2 %Na 2 CO 3 20 mL of aqueous solution was used to terminate the reaction, and the organic phase was separated with a separatory funnel, washed with water until neutral, and concentrated under reduced pressure to obtain a light yellow viscous liquid.

[0033] Structure Identification:

[0034] IR, ν max (cm -1 ): 3443(-OH), 2966, 2847(-CH 3 ,-CH 2 ), 1700, 1300 (glycoluril ring), 1112 (C-O-C).

[0035] Molecular weight and distribution:...

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PUM

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Abstract

The invention discloses an acryloyloxy-terminated polyether curing agent, which has a structural formula as described in the specification. In the structural formula, the sum of x, y, m and n is in arange of 12-40 and is an integer. The acryloyloxy-terminated polyether curing agent of the invention is mainly used for solid propellants.

Description

technical field [0001] The invention relates to a solid propellant curing agent, in particular to an acryloxy-terminated polyether curing agent, which belongs to the field of solid propellants. Background technique [0002] Polyazide glycidyl ether (GAP) has the advantages of positive heat of formation, fast combustion, high energy, clean gas, good thermal stability and low mechanical sensitivity. It is a high-energy low-signature propellant, gas generator and high solid content Ideal binder for propellants. GAP is generally used in conjunction with an isocyanate curing agent to cure the polyurethane elastomer through the reaction between the terminal hydroxyl group and the isocyanate group. However, the isocyanate curing agent in this type of curing system is highly active and easily reacts with water or protonic acid to generate CO2 quickly. Many pores are formed during the curing process of the propellant, which reduces the density of the propellant, affects its mechanic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28C08G65/332C08L71/02C09J171/02C09J11/08C06B45/10
CPCC08G65/2606C08G65/3322C08L71/02C09J171/02C09J11/08C06B45/10C08L2205/025C08L2205/05
Inventor 莫洪昌卢先明徐明辉张倩段秉蕙王伯周
Owner XIAN MODERN CHEM RES INST
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