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Rapid detection method for methylcyclosiloxane in textile

A technology of methylcyclosiloxane and detection method, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of long pretreatment time, complicated and time-consuming process, etc., and achieve the effect of simple detection and shortened detection cycle

Pending Publication Date: 2022-02-18
SHANGHAI INST OF QUALITY INSPECTION & TECHN RES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problems of long pretreatment time in existing detection methods, the use of organic reagents as extraction solvents, cumbersome and time-consuming process, etc., and provides a rapid detection method for methylcyclosiloxane in textiles, which does not require pretreatment of samples, It can quickly detect the content of three methylcyclosiloxanes in textiles qualitatively and quantitatively

Method used

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  • Rapid detection method for methylcyclosiloxane in textile
  • Rapid detection method for methylcyclosiloxane in textile
  • Rapid detection method for methylcyclosiloxane in textile

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Embodiment 1

[0031] The mensuration of methylcyclosiloxane content in embodiment 1 textile

[0032] (1) Use n-hexane as the solvent, weigh the standard substance of methylcyclosiloxane, configure it into a standard stock solution with a concentration of 1000±50mg / L, and then dilute it step by step to a low concentration of 5mg / L, 10mg / L, 20mg / L, 30mg / L, 40mg / L standard working solutions; then weigh 1g of chopped blank textiles in the headspace bottle, pipette 1mL of the above five different concentrations of standard working solutions into the textiles in the headspace bottle After the solvent is evaporated to dryness, the standard product of methylcyclosiloxane is obtained. The absolute contents of methylcyclosiloxane in the headspace bottle are: 5mg / kg, 10mg / kg, 20mg / kg, 30mg / kg, 40mg / kg.

[0033] (2) Take a textile sample with blue and white stripes, the textile fiber component is 100% lyocell, cut it into pieces or powder with a particle size of 0.5mm or less with scissors and mix eve...

Embodiment 2

[0043] The mensuration of methylcyclosiloxane content in embodiment 2 textiles

[0044] (1) Use n-hexane as the solvent, weigh the standard substance of methylcyclosiloxane, configure it into a standard stock solution with a concentration of 1000±50mg / L, and then dilute it step by step to a low concentration of 5mg / L, 10mg / L, 20mg / L, 30mg / L, 40mg / L standard working solutions; then weigh 1g of chopped blank textiles into the headspace bottle, and then pipette 1mL of five different concentrations of standard working solutions into the textiles in the headspace bottle After evaporating the solvent to dryness, the absolute contents of methylcyclosiloxane in the headspace vial are: 5mg / kg, 10mg / kg, 20mg / kg, 30mg / kg, 40mg / kg.

[0045] (2) Take a red textile sample with a white background. The fiber composition of the sample is 9.98% spandex and 90.02% nylon. Use scissors to cut it into fragments or powders with a particle size below 0.5mm and mix them evenly. Weigh 1g and cut it into ...

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Abstract

The invention provides a rapid detection method for methylcyclosiloxane in textiles, which adopts a headspace-gas chromatograph to detect methylcyclosiloxane, and comprises the following steps: (1) preparing a standard substance of methylcyclosiloxane, and placing the standard substance at the bottom of a headspace bottle; (2) crushing a to-be-tested sample into fragments with the particle size of 0.5 mm or below, uniformly mixing, weighing a proper amount of the to-be-tested sample, and putting the to-be-tested sample at the bottom of a headspace bottle; and (3) respectively detecting the methylcyclosiloxane in the standard substance and the sample to be detected in the steps (1) and (2) by adopting a headspace-gas chromatograph, and carrying out qualitative and quantitative analysis according to the comparison between the retention time and the peak area of the methylcyclosiloxane. According to the method, whether the textile contains methyl cyclosiloxane or not can be rapidly detected, and the detection period is shortened; the sample does not need chemical solvent extraction pretreatment, and the detection process is simpler and more environmentally friendly.

Description

technical field [0001] The invention relates to the field of textile detection, in particular to a rapid detection method for methylcyclosiloxane in textiles. Background technique [0002] Silicone softener is a commonly used finishing agent in the textile printing and dyeing industry, which can give fabrics softness, smoothness and antistatic properties. The use of silicone softeners can improve the wearability of textile products, and play an important role in improving the quality and added value of textile products. Octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), and dodecamethylcyclohexasiloxane (D6) are important raw materials for the synthesis of silicone fabric finishing auxiliaries. It shows that D4 has a long-term harmful effect on the aquatic environment and has the risk of weakening reproductive ability. It enters the environment mainly through volatilization and wastewater, and accumulates in organisms, causing biological hazards, while D5...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/86
CPCG01N30/02G01N30/06G01N30/8679G01N2030/062
Inventor 韩宁周信芳赵海浪吴东晓杨沁睿
Owner SHANGHAI INST OF QUALITY INSPECTION & TECHN RES
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