Method for analyzing chlorine content in rubber

An analysis method and chlorine content technology, applied in the field of physical and chemical analysis, can solve the problems of analyzing residual liquid environmental pollution, lack of accurate and convenient analysis methods, etc., and achieve the effects of being easy to master, easy to operate, and reducing analysis errors.

Inactive Publication Date: 2020-04-21
GANSU YINGUANG CHEM IND GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to eliminate the defect that there is no accurate and convenient analysis method for the chlorine content in rubber in the prior art, and the analysis residual

Method used

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  • Method for analyzing chlorine content in rubber

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Embodiment Construction

[0010] The invention provides a chemical analysis method of chlorine content in rubber:

[0011] Step 1: Sample weighing, weigh 9mg~10mg sample, accurate to 0.1mg, wrap the sample with filter paper, and clamp it in the helical platinum wire.

[0012] Step 2: Sample treatment, add 2mL potassium hydroxide solution, 5mL hydrogen peroxide solution and 10mL ultrapure water into the oxygen combustion bottle, place the oxygen combustion bottle on the oxygen charging combustion device in the safety cover; open the oxygen cylinder and adjust the pressure , pass oxygen to the oxygen combustion bottle for 1min, and the oxygen flow rate is greater than 2L / min; after being filled with oxygen, slowly remove the oxygen combustion bottle, quickly insert the plug at the end of the ignited bag sample filter paper into the oxygen combustion bottle, cover it and manually Press tightly, seal the mouth of the bottle with a small amount of water, and remove it from the safety cover after the flame i...

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Abstract

The invention discloses a method for analyzing chlorine content in rubber. According to the key technology, an oxygenated combustion device is adopted, and standard operation of analysts is achieved;an ion chromatograph is used for an analysis technology, so that operation steps in a sample analysis process are reduced, and operation is simpler and more convenient and is easy to master; analysiserrors are reduced, the amount of used reagents is small, generated waste liquid is little, a large amount of ethyl alcohol is not used, no characteristic pollutant is generated, particularly, a mercury-containing reagent, namely mercury nitrate, is not used, and it is not required to collect the mercury-containing reagent or treat the mercury-containing reagent by qualified departments. And the difference between two results of parallel determination is not greater than 5% of the average value of the two results, so that the existing technical problems are solved, and the requirement of analyzing and testing the chlorine content in rubber is completely met.

Description

technical field [0001] The invention relates to the field of physical and chemical analysis, in particular to an analysis method for chlorine content in rubber. Background technique [0002] Rubber products Fluorine rubber is used as an adhesive in mixed explosives because of its outstanding corrosion resistance, good physical and mechanical properties and electrical insulation, and its chlorine content is generally 19.1% to 20.2%. Too high or too low chlorine content will affect the performance of fluororubber, and will directly affect the processing performance, mechanical sensitivity, electrostatic sensitivity, flame sensitivity and fluidity of mixed explosive products, and even affect the density, Strength, mechanical performance and explosive performance, etc. [0003] In the prior art, the oxygen bottle combustion visual titration method is often used to measure the chlorine content in rubber. In 1988, the "Oxygen Bottle Combustion Method Determination of Chlorine Con...

Claims

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Application Information

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IPC IPC(8): G01N30/96G01N30/06
CPCG01N30/96G01N30/06
Inventor 吴越孙景欣贾一凡吴志科董永耀李晓霞白桂香李刚董海燕王秋艳
Owner GANSU YINGUANG CHEM IND GRP CO LTD
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