Method for representation of surface and interface characteristics of azide polyether elastomer

A technology of interface characteristics, nitrogen polyether, applied in the direction of surface/boundary effect, measurement device, instrument, etc., can solve the big difference between HTPB and NEPE propellant, lack of quantitative characterization method of azide polyether propellant, filler-matrix interface The mechanism of action is difficult to determine and other problems, to achieve the effect of easier instrument conditions, less error in test data, and easy operation

Inactive Publication Date: 2019-03-01
SHANGHAI AEROSPACE CHEM ENG INST
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Problems solved by technology

At present, there is a lack of quantitative characterization methods for the filler-matrix surface interface interaction of azide polyether propellants, and the mechanism of filler-matrix interface interaction is also difficult to determine
In addition, the formula composition of the azide polyether propellant system is quite different from the existing mature formula HTPB and NEPE propellants, and it is difficult to use the existing technical theory to evaluate

Method used

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  • Method for representation of surface and interface characteristics of azide polyether elastomer
  • Method for representation of surface and interface characteristics of azide polyether elastomer
  • Method for representation of surface and interface characteristics of azide polyether elastomer

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Embodiment Construction

[0013] The invention will be described in more detail hereinafter with reference to the accompanying drawings showing embodiments of the invention.

[0014] Select the appropriate parameters of the azide polyether system, add different single-component solid fillers (AP, RDX, HMX, aluminum powder) to the azide polyether system, and adopt the conventional solid propellant production process. Mixing, pouring, vacuuming, curing and other processes to prepare azide polyether films containing different fillers.

[0015] In order to reduce the maximum relative error of the surface energy of the solid material as much as possible, the reference liquid of the present invention selects three kinds of polar reference liquids and three kinds of non-polar reference liquids, which are respectively water, ethylene glycol, formamide polar reference liquid Ratio liquid, diiodomethane, α-bromonaphthalene, cyclohexane non-polar reference liquid. The surface characteristics and component data o...

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Abstract

The invention relates to a method for representation of surface and interface characteristics of azide polyether elastomer. The method includes: a plurality of azide polyether films containing different AP, RDX, HMX and aluminum powder, and a dynamic contact angle process is employed to test the contact angles of the six different reference solutions on the surfaces of the different azide polyether films, the reference solutions including polar reference solutions of water, ethylene glycol and formamide and nonpolar reference solutions of diiodomethane, alpha-bromonaphthalene and cyclohexane;wherein the polar reference solutions and nonpolar reference solutions are grouped in pairs, and calculation is carried out to acquire the surface energy of the azide polyether films, with different packing. In the method, the acquired solid surface energy used for evaluating the packing-substrate surface and interface characteristics of an azide polyether propellant has excellent effect. The method is simple and is high in test precision.

Description

technical field [0001] The invention relates to the interaction mechanism of the azide polyether propellant filler-matrix interface, in particular to a method for characterizing the surface and interface characteristics of the azide polyether matrix-filler. Background technique [0002] Azide polyether propellant is a high-performance solid propellant with high energy, insensitivity, and low characteristic signal. It meets the needs of various advanced missile weapons and is the focus of current research in the industry. PBT propellant is a composite energetic material with polyurethane elastomer as the binder matrix, and the adjustment of mechanical properties has become one of the key technologies in the research and development of this type of propellant. Because the PBT side chain contains a large number of rigid azide groups, the polymer molecular chain is short, the flexibility is poor, especially the low temperature mechanical properties, which have become the technic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N13/00
CPCG01N13/00
Inventor 黄丽萍干效东杨科朱小飞程连潮吕晓燕李辉万代红
Owner SHANGHAI AEROSPACE CHEM ENG INST
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