Quantitative analysis method of nitrocellulose component in propellant

A quantitative analysis, nitrocellulose technology, applied in the direction of material inspection products, fuel oil testing, etc., can solve the problems of large error in analysis results, slow speed, and many operation steps, and achieve the effect of rapid measurement and guaranteed accuracy.

Active Publication Date: 2013-04-10
XIAN MODERN CHEM RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the prior art, the determination method of nitrocellulose content in solid propellant mainly adopts subtraction method, which has many operation steps and slow speed. Due to the a

Method used

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  • Quantitative analysis method of nitrocellulose component in propellant

Examples

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Example Embodiment

[0032] Example 1: Determination of nitrocellulose component content in XX main charge:

[0033] 1) Use a spatula to process the XX main charge sample into a flower sheet, the thickness of which is less than 2mm, accurately weigh 1g and place it in a No. 3 filter cup with constant weight, extract with ether for 2h, and the extraction temperature is 58℃;

[0034] 2) Place the No. 3 filter cup in a drying oven at 100°C±5°C for 1 hour, then place it in a desiccator to cool naturally for 30 minutes, weigh it, and record the quality;

[0035] 3) Insoluble matter is directly used for quantification of nitrogen with a large injection volume element analyzer, injection volume: 80mg, combustion method: two-stage combustion; according to formula (1) to calculate the content of nitrocellulose in the main charge of XX, And compare with the result of subtraction method, the specific data are shown in Table 1.

[0036] Table 1 The content of nitrocellulose components in the main charge of XX

[0037]...

Example Embodiment

[0038] Example 2: Determination of the content of nitrocellulose in XX battery life medicine:

[0039] 1) Use a spatula to process the XX battery life medicine sample into a flower sheet, the thickness of which is less than 2mm, accurately weigh 1g and place it in a No. 3 filter cup with constant weight, extract with isopropyl ether for 2h, and the extraction temperature is 70℃;

[0040] 2) Place the No. 3 filter cup in a drying oven at 100°C for 1 hour, then place it in a desiccator to cool naturally for 30 minutes, weigh it, and record the quality;

[0041] 3) Insoluble matter is directly used for quantification of nitrogen with a large injection volume element analyzer, injection volume: 100mg, combustion method: two-stage combustion; using formula (1) to calculate the content of nitrocellulose in XX battery life medicine, And compare with the result of subtraction, the specific data are shown in Table 2.

[0042] Table 2 The content of nitrocellulose components in XX battery life ...

Example Embodiment

[0044] Example 3

[0045] The content of nitrocellulose in XX propellant containing ammonium perchlorate

[0046] 1) Use a spatula to process the XX propellant sample containing ammonium perchlorate into a flake shape, the thickness of which is less than 2mm, accurately weigh 1g into the No. 3 filter cup with constant weight, and mix with isopropyl ether and ether. Solvent extraction for 2 hours, extraction temperature is 60 ℃, wherein the volume ratio of ethyl ether and isopropyl ether 2:1;

[0047] 2) Transfer all the ether and isopropyl ether insolubles in the No. 3 filter cup to the beaker, add 30 mL of warm water, soak for 40 minutes, and keep the water temperature at 50°C;

[0048] 3) Transfer all the insolubles in the beaker after soaking in water to the original No. 3 filter cup, wash 4 times with water, drain it, dry it in a drying oven at 100℃±5℃ for 1h, then place it in a desiccator to cool naturally 30min, weigh, record the quality;

[0049] 4) Insoluble matter is directly...

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Abstract

The invention discloses a quantitative analysis method of a nitrocellulose component in a propellant, which comprises the following steps: after treating a propellant sample, extracting with organic ether at 55-70 DEG C; soaking organic ether insoluble substance in water while keeping the water temperature at 40-60 DEG C; drying the organic ether insoluble substance subjected to organic ether extraction and water soaking, cooling and weighing; and determining the nitrogen element content in the organic ether insoluble substance by using a secondary-combustion nitrogen element analysis meter of which the sample size is 80-100mg, and comparing with the nitrogen content in the raw material nitrocellulose to obtain the content of the nitrocellulose component in the propellant. The method is direct, quick and accurate, and is applicable to quantification of the nitrocellulose component in mono-base and double-base propellants as well as modified double-base propellants and composite propellants.

Description

technical field [0001] The invention belongs to the technical field of propellant analysis and testing, and in particular relates to a rapid quantitative method for nitrocellulose components in propellants. Background technique [0002] The most important use of solid propellant is to be used as an energy source and working medium in solid rocket motors, so that the rocket vehicle can obtain forward momentum, so as to complete tasks such as carrying and attacking damage. In order for the rocket weapon to accurately reach the target to be attacked, it is required that the field rocket has high precision and a precise guidance system for the missile, and the solid propellant charge as an energy source and working medium must have good performance, scientific and reasonable design and compatibility with the target. There is a good match between the rocket engines. Therefore, its formula is no longer as simple as single-base and double-base propellant components. In addition to...

Claims

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Application Information

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IPC IPC(8): G01N33/22
Inventor 温晓燕胡岚刘红妮严蕊高朗华王婧娜陈曼梁忆
Owner XIAN MODERN CHEM RES INST
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