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High-accuracy testing method of oil content of polyester staple fibers

A technology of polyester staple fiber and test method, applied in the field of transfer extraction method, can solve the problems of large friction coefficient, poor hygroscopicity and electrical conductivity, affecting spinning quality and efficiency, etc., and achieve the effect of improving test accuracy

Inactive Publication Date: 2016-07-13
江阴市纤维检验所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The official moisture regain of polyester staple fiber is 0.4%, its hygroscopicity and electrical conductivity are poor, and its friction coefficient is large, so that it is easy to generate static electricity due to friction during fiber production and subsequent spinning process, which affects the quality and efficiency of spinning

Method used

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  • High-accuracy testing method of oil content of polyester staple fibers
  • High-accuracy testing method of oil content of polyester staple fibers
  • High-accuracy testing method of oil content of polyester staple fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] (1) Weigh 2 samples at random, each sample is 4-5g, accurate to 0.01g;

[0051] (2) Put the weighing bottle in an oven and bake it to a constant weight at 105°C (the difference between the two weighings before and after the weighing is controlled within 0.05%), move it into a desiccator, cool to room temperature, weigh and record the weighing bottle drying before extraction Dry mass m 1 , Accurate to 0.1mg;

[0052] (3) Wrap the sample into a cylindrical shape with qualitative filter paper, and place it in the extraction cylinder of the Soxhlet extractor (ensure that the height of the sample cylinder does not exceed the highest point of the siphon), connect the distillation flask, and inject 100-130ml into the extraction cylinder Ether, install the condenser;

[0053] (4) Set the temperature of the constant temperature water bath to 50-60℃, install the Soxhlet extractor containing the sample on the constant temperature water bath, heat the constant temperature water bath to t...

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Abstract

The invention relates to a high-accuracy testing method of oil content of polyester staple fibers. The method is characterized in that with the adoption of an optimized extraction method, an extraction oil agent transferring step is added, an oil agent in a distillation flask in an original extraction method is transferred to a weighing bottle, drying and weighing are performed after evaporation in a water bath, the absolute dry weight of residues is calculated, and the influence of environmental temperature and humidity changes on the oil content testing result is reduced to the lower level. With the adoption of the transferring extraction method, the oil content of the polyester staple fibers can be accurately detected; compared with an original method, the testing accuracy of the method is greatly improved.

Description

Technical field [0001] The invention relates to a high-precision testing method for the oil content of polyester staple fibers—a transfer extraction method. Background technique [0002] Polyester staple fiber has a nominal moisture regain of 0.4%, poor hygroscopicity and conductivity, and a large friction coefficient. It is very easy to generate static electricity due to friction during fiber production and subsequent spinning, which affects spinning quality and efficiency. In order to solve this problem, manufacturers will add a layer of antistatic oil to the surface of the fiber during the production of polyester staple fiber. On the one hand, it increases the smoothness of the fiber surface and reduces friction. On the other hand, it plays a role in dissipating static electricity. . The oil content is closely related to the spinnability of the fiber. Fibers with low oil content are prone to static electricity, and too high oil content is prone to sticking, which will affect ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04
CPCG01N5/04
Inventor 陆永良龚珊袁裕禄陈靖宇邱星伟
Owner 江阴市纤维检验所
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