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Method for quantitatively detecting content of each component in mixture of polyester fiber and polypropylene fiber

A technology of polypropylene fiber and polyester fiber, which is applied in the detection field of textile components, and can solve problems such as adverse environmental effects and easy volatility

Inactive Publication Date: 2012-08-01
INST OF WOOL & HEMP TEXTILE SCI SHANGHAI
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Problems solved by technology

The dimethylbenzene used repeatedly in this method is a poisonous reagent. During the test, the dimethylbenzene is in a boiling state, and the temperature is higher, and it is easy to volatilize. Although the content of each component in the polyester fiber and polypropylene fiber mixture can be detected according to this method, However, operators will undoubtedly face certain risks, and the xylene waste liquid used in the detection also has adverse effects on the environment

Method used

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  • Method for quantitatively detecting content of each component in mixture of polyester fiber and polypropylene fiber

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Embodiment Construction

[0010] The concentrated sulfuric acid concentration of dissolving reagent used in the present invention is more than 98%. The test of textile fiber components requires at least 1g sample. First, the sample sample is disassembled into yarn or cut into small pieces, dried and weighed, immersed in 100 ml of concentrated sulfuric acid, the test temperature is room temperature, and the stirring time is 30 minutes. Filter the remaining fibers dissolved in concentrated sulfuric acid into the crucible, wash them with a small amount of concentrated sulfuric acid, pour out the concentrated sulfuric acid in the filter bottle, and then treat them with 75% sulfuric acid solution, wash with distilled water, and put them in 8% dilute ammonia solution. And, finally rinse with distilled water. The correction coefficient of the polypropylene fiber under this dissolution condition is 1.0. Other operations are the same as the routine testing of textiles.

[0011] Attached table 1 is the comp...

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Abstract

The invention relates to a method for quantitatively detecting the content of each component in a mixture of polyester fiber and polypropylene fiber. The detection method comprises the following steps of: (1) putting a test sample with known dry weight which is pretreated by using a standard method into concentrated sulfuric acid in the mass volume ratio of 1g:(100-110ml), and stirring; (2) dissolving the polyester fiber in the mixture, performing sulfuric acid solution treatment, distilled water washing, diluted ammonia water neutralization and distilled water washing and treatment on the residual polypropylene fiber, filtering polypropylene into a glass sand core crucible, drying, weighing, and combining with a modified coefficient to obtain the percentage content of the polypropylene fiber; and (3) subtracting to obtain the content of the polyester fiber. The method has the advantages of accurate test data, nontoxicity of a used reagent to human bodies, no pollution on environment, safety and reliability.

Description

technical field [0001] The invention relates to a detection method for textile components, in particular to a quantitative detection method for each component in a polyester fiber / polypropylene fiber two-component mixture. Background technique [0002] In the labeling of textile fiber content, clothing fabrics are required to accurately mark the composition to protect the interests of consumers. The detection method for polyester fiber / polypropylene fiber fabrics in the current related method standards is as follows: (1) Put the sample into boiled xylene and stir for 3 minutes, repeat the operation 3 times; (2) Dissolve in the polypropylene fiber Finally, filter the remaining fiber into the crucible, and then wash it with boiled xylene for two consecutive times, and then wash it with petroleum ether twice after cooling; (3) Dry and weigh the residue in the crucible, and correct it according to the correction factor , obtain the percentage composition of polyester fiber; (4...

Claims

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Application Information

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IPC IPC(8): G01N5/04
Inventor 朱庆芳张怡石毅陈扬程瑛
Owner INST OF WOOL & HEMP TEXTILE SCI SHANGHAI
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