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Rapid detection method for fluorescent whitening agent on fabrics

A fluorescent whitening agent and detection method technology, applied in the field of rapid detection of fluorescent whitening agents on textiles, can solve the problems of long testing time, high cost, complicated operation, etc., and achieve low cost, convenient and fast use, and simple operation Effect

Inactive Publication Date: 2013-04-24
SGS STANDARD TECHNICAL SERVICES SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the above-mentioned deficiencies, and provide a rapid detection method for fluorescent whitening agents on textiles, which solves the problems of complex operation, long test time, and high cost of traditional determination methods, and can simply and quickly test the optical brighteners in textiles. Whether it contains fluorescent whitening agent, intuitive and practical, convenient and quick to use

Method used

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Embodiment Construction

[0015] Below in conjunction with embodiment, the present invention will be further described as follows:

[0016] A rapid detection method for fluorescent whitening agent on textiles, comprising the following steps:

[0017] 1) Under the standard humidity and temperature conditions, that is, the relative humidity is 65±4%, and the temperature is 20±2°C, adjust the humidity of the sample to be tested to balance, so that the sample to be tested can be tested under the standard humidity and temperature conditions. The samples are continuously weighed at intervals of 2 hours, and the weight of the samples to be tested does not change more than 0.25%;

[0018] 2) Directly irradiate the balanced sample to be tested with ultraviolet light with a wavelength greater than or equal to 244nm but less than or equal to 375nm;

[0019] 3) Observe whether the sample to be tested has fluorescence or fluorescent reflection points under the irradiation of ultraviolet light. If there is, the sam...

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PUM

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Abstract

The invention relates to the technical field of fabric detections, and specifically relates to a rapid detection method for a fluorescent whitening agent on fabrics. The rapid detection method comprises the following steps of humidifying a to-be-detected sample to a balance state under a condition of standard humidity and temperature in a relative humidity of 65 + / - 4% and a temperature of 20 + / - 2 DEG C; directly irradiating the balanced to-be-detected sample by using an ultraviolet light with a wavelength larger than or equal to 244 nm and smaller or equal to 375 nm; observing whether the to-be-detected sample has a fluorescent point or a fluorescent reflection point or not under the irradiation of the ultraviolet light. If the to-be-detected sample has the fluorescent point or the fluorescent reflection point, the to-be-detected sample has the fluorescent whitening agent; if the to-be-detected sample does not have the fluorescent point or the fluorescent reflection point, the to-be-detected sample does not have the fluorescent whitening agent. Compared with a conventional fabric detection technology, the detection method solves the problems of complex operation, long test time, high cost and the like, and can test whether the fabric contains the fluorescent whitening agent or not simply and rapidly. The method is not only simple in operations but also convenient and efficient for use. The method has high sensitivity and low cost, and is intuitive and practical.

Description

[technical field] [0001] The invention relates to the technical field of textile detection, in particular to a rapid detection method for fluorescent whitening agents on textiles. [Background technique] [0002] Fluorescent whitening agent is a colorless fluorescent dye. White or light-colored textiles treated with fluorescent whitening agent will have obvious improvement in appearance, improved quality and grade, and correspondingly increased commercial value. Fluorescent whitening agent can absorb invisible ultraviolet light (wavelength range of about 360-380nm) and convert it into blue light or purple visible light with longer wavelength, so it can compensate for the unwanted yellowish light in the matrix, and at the same time reflect more than the original incident light More visible light with a wavelength in the range of 400-600nm makes the product appear whiter, brighter and more colorful. [0003] Optical brighteners are widely used in textiles, among which cotton a...

Claims

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Application Information

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IPC IPC(8): G01N21/64
Inventor 曹争艳邱丽
Owner SGS STANDARD TECHNICAL SERVICES SHANGHAI CO LTD