A kind of alkynylated neutral polymer bonding agent, preparation method and propellant

A polymer and bonding agent technology, applied in offensive equipment, non-explosive/non-thermal agent components, explosives, etc., can solve the problems of inability to further improve the mechanical properties of propellants, weak interactions, and inability to improve polymer chain interactions. , to achieve the effect of improving modulus and tensile strength, enhancing physical reinforcement, and improving modulus and strength
CN109810210BActive Publication Date: 2021-09-07HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
Publication Date
2021-09-07

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Abstract

The invention relates to an alkynylated neutral polymer bonding agent, a preparation method and a propellant. The present invention is the first to prepare an alkynylated neutral polymer bonding agent, and the molecular structure simultaneously contains a hydroxyl group, an alkynyl terminal group, and a cyano group. and other three groups, the cyano group in the molecular chain is adsorbed on the surface of the nitramine filler to form a polymer shell insoluble in nitrate ester, which inhibits the dissolution of the nitramine filler by plasticizers such as nitrate ester, and enhances the solubility of the nitramine filler. The physical strengthening effect improves the modulus and strength of the composite material; the hydroxyl group enters the cross-linked curing network system through the isocyanate curing agent to enhance the interaction between the adhesive and the nitramine solid filler; the alkynyl group and the azide adhesive molecule The azide group undergoes a click reaction, which enhances the interaction between the adhesive molecule and the bonding agent and the adhesive molecule. The three interactions can significantly enhance the interaction between the filler and the binder matrix, and significantly improve the modulus and tensile strength of the composite propellant.
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Description

technical field

[0001] The invention relates to an alkynylated neutral polymer bonding agent, a preparation method and a propellant, in particular to a functional auxiliary agent for improving the mechanical properties of azide polyether / nitroamine composite solid propellants and a preparation method thereof. It belongs to the technical field of solid propellants. Background technique

[0002] Azide polyether composite solid propellant is a polyurethane polymer composite material with hydroxyl-terminated azide polyether as binder and metal aluminum powder, oxidant, high-energy nitramine explosives, etc. as solid filler. The mechanical properties of solid propellants, especially the tensile strength and maximum elongation are the key indicators to determine the structural integrity of solid rocket motors and the aging performance of propellants. Azide polyether adhesives, such as glycidyl azide (GAP), poly 3,3-bis(azidomethyl)butylene oxide (PBAMO), poly 3,3-bis(azidomethyl)...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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