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Quantitative determination method for fiber content of viloft fiber and natural cellulose fiber blended textiles

A quantitative detection method, natural cellulose technology, applied in the direction of weighing by removing certain components, can solve the problems affecting the accuracy of measurement results, measurement work efficiency, low detection efficiency, etc., to improve detection efficiency and reduce detection time , The effect of reducing the melting temperature

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

AI Technical Summary

Problems solved by technology

[0008] In the field of quality inspection, the chemical dissolution method is usually used for the quantitative analysis of the fiber content of blended products. The so-called chemical dissolution method is to use a certain reagent to dissolve one component in the blended product, and then calculate the content of other components. The method also has many shortcomings. For example, the dissolution reagent and the 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 natural cellulose fiber blended textiles
  • Quantitative determination method for fiber content of viloft fiber and natural cellulose fiber blended textiles
  • Quantitative determination method for fiber content of viloft fiber and natural cellulose fiber blended textiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1 Natural cellulose correction factor test

[0021] Take a certain amount of natural cellulose fiber and place it in a constant temperature oven at 105°C for 3 hours. After fully drying, take it out quickly and place it in a desiccator to cool to room temperature. Weigh it with a balance with an accuracy of 0.1mg. The weight of natural cellulose fiber, denoted as a, according to the sample (g): reagent (mL) = 1:100 bath ratio, the natural cellulose fiber is placed in formic acid-zinc chloride solution (formic acid-zinc chloride solution is prepared by Add 20g of anhydrous zinc chloride and 68g of anhydrous formic acid to 100g), shake continuously at 40-70°C for 30 minutes, wash the natural cellulose fiber with water until neutral, and place it in a constant temperature oven at 105°C Dry it, then quickly take it out and place it in a desiccator to cool to room temperature, and weigh b with a balance with an accuracy of 0.1 mg. Comparing the size of a and b ju...

Embodiment 2

[0025] Embodiment 2 viloft fiber dissolving performance test

[0026] Take a certain quality 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 0.1mg to weigh the weight of the fiber. Weight, according to sample (g): Reagent (mL) = 1:100 bath ratio Put viloft fiber in formic acid-zinc chloride solution (formic acid-zinc chloride solution consists of 20g anhydrous zinc chloride and 68g anhydrous formic acid plus water to 100g), after continuous shaking at 40-70°C for different times, observe the dissolution of viloft fibers. It can be seen from Table 2 that it takes 30 minutes for the viloft fiber to dissolve completely at 60°C; when the temperature is higher than 70°C, it only takes 20 minutes to dissolve completely.

[0027] Table 2 Viloft fiber dissolving performance test

[0028]

Embodiment 360

[0029] Dissolution test of cotton blended product at 360°C of embodiment

[0030] Take a certain amount of viloft fiber and cotton 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 sample (g): reagent (mL) = 1:100 bath ratio, put the blended product in formic acid-zinc chloride solution (formic acid-zinc chloride solution is composed of 20g anhydrous zinc chloride and 68g anhydrous formic acid plus water to 100g), viloft fibers were completely dissolved in formic acid-zinc chloride solution after continuous shaking at 60°C for 30 minutes, the insoluble fibers, namely cotton, were washed with water until neutral, and dried in a constant temperature oven at 105°C. Then quickly take it out and place it in a desiccator to cool to room temperature, and weigh m with a balance with an accuracy of 0...

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Abstract

A provided quantitative determination method for fiber content of viloft fiber and natural cellulose fiber blended textiles comprises the following steps: S1, putting viloft fiber and natural cellulose fiber blended textiles in a baking box to bake to dry, then cooling to room temperature, and weighing the mass of the blended textiles, wherein the natural cellulose is cotton, flax and ramie which are not subjected to chemical degradation; S2, putting the blended textiles in a formic acid-zinc chloride reagent with the formic acid mass fraction of 68% and the zinc chloride mass fraction of 20% according to the sample (g) to reagent (mL) bath ratio of 1:100-200, continuously shaking at 40-70 DEG C for 20-60 min; and S3, washing fiber indissolvable in the formic acid-zinc chloride reagent in the step S2 with water to neutral, putting in a constant-temperature baking box to bake to dry, rapidly taking out and cooling to room temperature, and weighing the residual mass of the blended textiles. A 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 natural cellulose. 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 frie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04
Inventor 欧海龙方方余伟梅蔡丽蓉
Owner GUANGDONG DONGGUAN QUALITY SUPERVISION TESTING CENT
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