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Method for measuring content of mixed ester in nitro paint cloth

A determination method and mixed ester technology, applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of long analysis time and complicated operation procedures, achieve high analysis success rate, reduce extraction operation process, and meet production timeliness. Effect

Active Publication Date: 2013-10-02
宜宾北方川安化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a new assay method for the above-mentioned problems of long analysis time and complicated operation procedures

Method used

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  • Method for measuring content of mixed ester in nitro paint cloth
  • Method for measuring content of mixed ester in nitro paint cloth
  • Method for measuring content of mixed ester in nitro paint cloth

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The standard value of the content of mixed ester in the sample of embodiment 1 is 26.33%

[0028] Adopt same sample to measure ten times respectively with the present invention and existing method respectively, and measurement result contrast is as follows:

[0029] The result that table 1 embodiment 1 sample adopts the method analysis of the present invention to measure

[0030]

[0031] Table 2 Example 1 sample adopts existing method to analyze and measure the result

[0032]

Embodiment 2

[0033] The standard value of the content of mixed ester in the sample of embodiment 2 is 25.86%

[0034] Embodiment 2 sample adopts the result that the present invention analyzes and measures

[0035]

[0036] Embodiment 2 sample adopts existing method analysis to measure the result

[0037]

Embodiment 3

[0038] The standard value of the content of mixed ester in the sample of embodiment 3 is 27.17%

[0039] Embodiment 1 sample adopts the result that the present invention analyzes and measures

[0040]

[0041] Embodiment 1 sample adopts the result that existing method analysis measures

[0042]

[0043] It can be seen from the above data that the accuracy of the analysis results of the present invention is high, and the analysis precision is also very good.

[0044] The present invention adopts dichloromethane or chloroform as extractant, can selectively extract the mixed ester and neutralizing agent in the sample, boric acid, chrysotile and nitrocellulose are not extracted, thereby reducing the extraction operation process, making The operation is simplified; the sample will not agglomerate, so the filter cup will not be blocked; it only takes 4 hours to analyze a sample, which can well meet the production timeliness requirements. In addition, because the operation proc...

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Abstract

The invention relates to a method for measuring the content of mixed ester in a piece of nitro paint cloth, and belongs to the technical field of organic matter analytic determination. The invention solves the problems of long analytic time and complicated operation procedure in the prior art and provides a new determination method. The method comprises the following steps of: (1) processing a sample, namely processing the sample to be measured of the nitro paint cloth to flower piece shape, wherein the quality is M1; (2) adding an extractant to the sample M1 of the step (1) after processing and extracting for 1-3h at 55 DEG C to 60 DEG C, wherein the extractant is dichloromethane or trichloromethane; (3) directly evaporating the extractant of extracted filtrate in the step (2) to dryness, drying and weighing to obtain the total quality M2 of the mixed ester and a centralite, calculating the total content of the mixed ester and the centralite by (M1-M2) / M1, and subtracting the content of the centralite form the total content of the mixed ester and the centralite to obtain the content of the mixed ester in the nitro paint cloth. The method is simple, the time is short, and the success rate is 100% by looking at the operation in recent years.

Description

technical field [0001] The invention relates to a method for the content of mixed esters in nitro paint cloth, belonging to the technical field of organic matter analysis and measurement. Background technique [0002] Nitro paint cloth is a coating agent (coating layer) for double-base gunpowder. Its main components are tricresyl phosphate, dibutyl phthalate, neutralizer, boric acid, catalyst, nitrocellulose and chrysotile. Yibin North Chuanan Chemical has production and sales. [0003] For the analysis method of tricresyl phosphate and dibutyl phthalate, diethyl ether is generally used in China as the extraction agent. The specific operation method is: process the sample into a flower flake, and weigh about 2 grams of the flower flake sample , accurate to 0.0002g. Put a small amount of filter paper in the middle of the weighed sample and the wall of the filter cup to prevent the sample from sticking into a large clump and clogging. Add about 50 ml of ether into a Vaseli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N5/00
Inventor 曹远洋罗立英黄德江罗伦忠王宏
Owner 宜宾北方川安化工有限公司
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