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Quantitative determination method for fiber content of viloft fiber and polyamide blended textiles

A quantitative detection method and fiber content technology, which is applied in the detection field of products containing viloft fiber and nylon blends, can solve the problems of low detection efficiency, affecting the accuracy of measurement results and the efficiency of measurement work, and achieve shortened detection time and high accuracy performance and improve detection efficiency

Inactive Publication Date: 2014-10-29
GUANGDONG DONGGUAN QUALITY SUPERVISION TESTING CENT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In the field of quality inspection, the chemical dissolution method is usually used for the quantitative analysis of blended products. The so-called chemical dissolution method is to select a certain reagent to dissolve one component in the blended product, and then calculate the content of other components. However, the chemical dissolution method also has Many shortcomings, for example, the dissolution reagent and reaction temperature directly affect the accuracy of the measurement results and the efficiency of the measurement work. The chemical dissolution method used by the quality inspection unit usually takes 1 to 2.5 hours, and the detection efficiency is low.

Method used

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  • Quantitative determination method for fiber content of viloft fiber and polyamide blended textiles
  • Quantitative determination method for fiber content of viloft fiber and polyamide blended textiles
  • Quantitative determination method for fiber content of viloft fiber and polyamide blended textiles

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1 viloft fiber correction coefficient experiment

[0024] Take a certain amount of viloft fiber and place it in a constant temperature oven at 105°C for 3 hours. After it is fully dried, take it out quickly and place it in a desiccator to cool to room temperature. Use a balance with an accuracy of 0.1 mg to weigh the amount of viloft fiber. The weight, denoted as a, according to the sample (g): reagent (mL) = 1:100 bath ratio, put the viloft fiber in formic acid with a mass concentration of 80% to 88% or hydrochloric acid with a mass concentration of 20%. After shaking continuously for 20 minutes at 10-50°C, wash the viloft fibers with water until neutral, dry them in a constant temperature oven at 105°C, then quickly take them out and place them in a desiccator to cool to room temperature, with an accuracy of 0.1mg The balance weighs the weight b. Comparing the size of a and b can get the mass loss of the viloft fiber after being treated with the reagent so...

Embodiment 2

[0029] Embodiment 2 viloft fiber dissolving performance test

[0030] In this test, 20% hydrochloric acid, 80% formic acid, 88% formic acid, and 75% sulfuric acid were selected as the dissolving reagents, and a certain mass of viloft fibers were put into the above reagents respectively. Dissolution at 30°C and 40°C, according to Table 2, it can be seen that viloft fiber is in 10-40°C, 80%-88% formic acid solution or in 10-30°C, 20% hydrochloric acid solution, viloft fiber None of them dissolved; while the viloft fiber only partially swelled in 40℃, 20% hydrochloric acid solution.

[0031] Table 2 Viloft fiber dissolving performance test

[0032]

Embodiment 3

[0033] Embodiment 3 80% formic acid dissolution test

[0034] Take 2 parts of viloft fiber and nylon blended products whose component content is unknown, and place them in a constant temperature oven at 105°C for 3 hours. Weigh the weight of the blended product with a balance with a density of 0.1 mg, and record it as m 0 According to the sample (g): reagent (mL) = 1:100 bath ratio, the blended product was placed in 80% formic acid, and after continuous shaking at 10°C for 20 minutes, the nylon was completely dissolved in the formic acid solution. The insoluble fiber, viloft fiber, is washed with water until neutral, dried in a constant temperature oven at 105°C, then quickly taken out and placed in a desiccator to cool to room temperature, and weighed with a balance with an accuracy of 0.1mg m 1 . Among them, the mass of viloft fiber in the blended product is m 1 , the mass of nylon is m 0 -m 1 .

[0035] After calculation and reasoning, the percentages of viloft fiber ...

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Abstract

A provided quantitative determination method for fiber content of viloft fiber and polyamide blended textiles comprises the following steps: S1, putting viloft fiber and polyamide blended textiles in a baking box with a constant temperature of 102-108 DEG C to bake to dry, then rapidly taking out and putting in a dryer to cool to room temperature, and weighing the mass of the blended textiles and recording as m0; S2, putting the blended textiles into formic acid with the mass concentration of 80%-88% or hydrochloric acid with the mass concentration of 20% according to the sample (g) to reagent (mL) bath ratio of 1:100-200, continuously shaking at 10-40 DEG C for 15-30 min; and S3, washing fiber indissolvable in formic acid or hydrochloric acid reagent in the step S2 with water to neutral, putting in a baking box with a constant temperature of 102-108 DEG C to bake to dry, rapidly taking out and putting in a dryer to cool to room temperature, and weighing the residual mass of the blended textiles and recording as m1. The dissolving temperature is controlled at 10-40 DEG C, because viloft fiber at the temperature shows relatively strong acid resistance, a final detection result is highly consistent with an actual value, and the method has extremely high accuracy.

Description

technical field [0001] The invention relates to a method for quantitative analysis and detection of fiber content in textiles, in particular to a method for detection of blended products containing viloft fibers and nylon. Background technique [0002] Viloft fiber, commonly translated as Viloft fiber or Viloft fiber in Chinese, is another new type of regenerated cellulose fiber produced by British Acordis company after Tencel fiber. It is artificially extracted from high-quality wood specially cultivated ecologically. The raw materials are extracted and produced by the solvent method, which is a pure natural, high-grade environmental protection, pollution-free and degradable fiber. The production process of viloft fiber will not pollute the environment. The auxiliary materials and additives used in the production process are non-toxic, and most of the auxiliary materials and semi-finished fibers can be recycled. It is a new type of green and environmentally friendly fiber. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04
Inventor 刘付建方方蔡丽蓉欧海龙
Owner GUANGDONG DONGGUAN QUALITY SUPERVISION TESTING CENT
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