Method for chromatography determination of organic functional additive content in azide polyether propellant

A technology of functional additives and determination methods, which is applied in the field of chromatographic analysis, can solve the problems of large error in experimental data, high risk of sample processing, and many steps in the measurement process, so as to improve reliability, make the detection method simple and easy, and ensure the development quality effect

Inactive Publication Date: 2016-07-06
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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Problems solved by technology

[0004] The above-mentioned published literature reports reflect the technical status of the method for determining the content of functional additives in azide polyether propellants. The existing defects are: high risk of sample processing, many steps in the measurement process, large errors in experimental data, and relatively high detection costs

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  • Method for chromatography determination of organic functional additive content in azide polyether propellant
  • Method for chromatography determination of organic functional additive content in azide polyether propellant
  • Method for chromatography determination of organic functional additive content in azide polyether propellant

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[0014] The present invention will be further described in two groups below in conjunction with the examples.

[0015] The first group, the determination of the content of functional additives in the azide polyether propellant with the oxidant hexanitrohexaazaisowurtzitane Cl-20 content of 60% by liquid chromatography.

[0016] Step 1, prepare test samples: obtain azide polyether propellant, cut into fine particles of 1mm×1mm×1mm, weigh 0.2–0.5g respectively, put them into a 50ml stoppered Erlenmeyer flask, add methanol, acetonitrile, chloroform, 20–30ml of one of the organic solvents such as acetone, ultrasonically extracted for 2-4 hours, soaked for at least 20 hours to form soaked extracts, and quantified by external standard method.

[0017] Step 2, determine the detection conditions: use high performance liquid chromatography HPLC to quantitatively measure the soaking extract, and use the organic functional additive in the azide polyether propellant as the detection object...

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Abstract

The present invention discloses a method for chromatography determination of organic functional additive content in an azide polyether propellant used in aviation fuels. The steps are as follows: preparation of a test sample, determination of testing conditions, production of an external standard calibration curve and formation of a test data list. During the preparation of the test sample, one of organic solvents such as methanol, acetonitrile, chloroform and acetone is added, an immersion extraction solution is formed by ultrasonic and immersion extraction process treatment, and an external standard method is used for quantification; during the determination of the testing conditions, the propellant immersion extraction solution is used as a detection object, a diode array detector is used, a specific wavelength is set as a detection wavelength, and high and low content components can be simultaneously detected. By combination of ultrasonic and immersion extraction processes, to-be-tested components are accurately determined, harmful factors are avoided, different detection wavelengths are selected for different components, the high and low content components of a variety of functional additives in a propellant can be simultaneously detected, and the method has the advantages of being simple, accurate in data, good in data repeatability and high in detection sensitivity.

Description

technical field [0001] The invention relates to a chromatographic analysis method in the field of polymer chemistry of aerospace fuel, in particular to a chromatographic determination method for the content of organic functional additives in azide polyether propellants. Background technique [0002] It has been reported in the literature that liquid chromatography was used to determine plasticizer nitroglycerin NG, butanetriol trinitrate BTTN, triethylene glycol dinitrate TEGDN and stabilizer AD in high-energy nitrate ester plasticized polyether NEPE propellant , HMX content of the oxidant cyclomethylenetetranitroamine, without considering the interference of the oxidant hexanitrohexaazaisowurtzitane CL-20 and its impurities on the determination of other components. [0003] The literature has reported the determination of the purity and impurities of the oxidant hexanitrohexaazaisowurtzitane Cl-20, but has not reported the determination of the content of hexanitrohexaazaiso...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88
Inventor 庞爱民聂海英黄志萍胡伟章园园徐娜王敏刘治国罗岚马新刚
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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