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Fine denier pre-oriented fiber profile degree detecting method

A pre-oriented fiber and detection method technology, applied in the direction of measuring devices, test sample preparation, instruments, etc., can solve the problems of measuring the cross-section of POY special-shaped yarn, such as large error, low precision, easy deformation, etc., to achieve the effect of sample preparation Good, simple and convenient operation, simple sample preparation method

Active Publication Date: 2013-04-24
CHINESE TEXTILE ACAD
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Problems solved by technology

[0008] Aiming at the defects of the above test methods, the present invention proposes a detection method for the degree of irregularity of fine denier shaped pre-oriented fiber, which solves the problem that the cross-section of fine denier shaped pre-oriented chemical fiber filament (POY) is easily deformed in the past, and the measurement of POY The problem of large cross-section error and low precision of special-shaped wire

Method used

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  • Fine denier pre-oriented fiber profile degree detecting method
  • Fine denier pre-oriented fiber profile degree detecting method
  • Fine denier pre-oriented fiber profile degree detecting method

Examples

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Embodiment 1

[0055] 1) Heat-setting the fine-denier pre-oriented fiber bundles; specifically: wind the fine-denier pre-oriented fiber bundles on the glassware, tie a knot and tie them tightly, and then place them in a constant temperature oven for fixed-length heat setting treatment. The temperature of the oven is greater than the glass transition temperature of the fine denier pre-oriented fiber. When the fine denier pre-oriented fiber is a polyester fine denier pre-oriented fiber or a nylon fine denier pre-oriented fiber, the temperature of the oven is 165 to 190° C., preferably 170 to 100 ° C. 185°C; the time to be placed in the oven is 30-100 minutes, preferably 60-80 minutes;

[0056] 2) Use a metal wire to penetrate the heat-set fine denier pre-oriented fiber bundle into a soft plastic tube with an inner diameter of 1.1-1.14 mm, and the fine-denier pre-oriented fiber bundle introduced into the soft plastic tube should be moderately tight. To prevent extrusion between fibers, destroyi...

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Abstract

The invention relates to a fine denier pre-oriented fiber profile degree detecting method which comprises the following steps: conducting heat setting treatment to fine denier pre-oriented fiber bundles; penetrating the fine denier pre-oriented fiber bundles after heat setting treatment into a soft plastic pipe; slicing the fine denier pre-oriented fiber bundles and the soft plastic pipe; observing sliced samples one by one under a microscope and measuring a radius of a inscribed circle of each section and a radius R of a circumscribed circle of each section, and the circumscribed circle of each section has a same center of circle with the inscribed circle; calculating fine denier pre-oriented fiber profile degrees and profile degree coefficient variations. The fine denier pre-oriented fiber profile degree detecting method solves the problems that in the prior art, fiber cross sections of fine denier pre-oriented chemical filament (polyester pre-oriented yarn (POY)) are prone to deforming in sample preparation process, and measurement of the POY profile cross section is big in error and low in accuracy.

Description

technical field [0001] The invention relates to the technical field of chemical fiber cross-sectional shape and structure testing, especially a sample testing method for microscopic observation of the cross-section of fine-denier special-shaped pre-oriented filament (POY), which is suitable for the cross-section of fine-denier special-shaped pre-oriented chemical fiber (POY) Observational study of shape and determination of degree of irregularity. Background technique [0002] The sustained and rapid development of my country's chemical fiber industry has significantly improved its comprehensive competitiveness, which has effectively promoted and supported the development of the textile industry and related industries. Market demand has played an active and important role. [0003] Fiber differentiation is the general trend of synthetic fiber development, and special-shaped fiber is one of the most important technologies of chemical fiber differentiation technology. The chan...

Claims

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Application Information

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IPC IPC(8): G01B11/24G01B11/10G01N21/84G01N1/44
Inventor 国凤敏姜锋李健刘静
Owner CHINESE TEXTILE ACAD
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