Method for detecting tightening elongation rate and elastic recovery rate of composite elastic fiber of chemical fiber
A technology of composite elastic fiber and elastic recovery rate, which is applied in the direction of applying stable tension/pressure to test the strength of materials, can solve the problems of long detection time, high cost, high cost, etc., and achieves simple and accurate detection method, low cost, fast effect
Inactive Publication Date: 2012-12-19
周峰
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[0002] With the increase of domestic textile chemical fiber "polytrimethylene terephthalate / polyethylene terephthalate" elastic fiber production capacity and the expansion of market customer usage, the current "polytrimethylene terephthalate / polyethylene terephthalate" The detection methods of the main technical indicators of polyethylene terephthalate elastic fibers are not professional, and only refer to similar methods for detection, the quality indicators are difficult to guarantee, and the detection methods are complicated, expensive, high cost, long detection time, direct affect production
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[0031] The "polytrimethylene terephthalate / polyethylene terephthalate (PTT / PET)" composite elastic fiber is made into a skein, which is treated in boiling water for about 30 minutes, and its performance under light and heavy loads is measured. length.
[0032] The equipment used included:
[0033] Yarn length measuring machine: with adjustable pre-tension and reciprocating wire guide device, the circumference of the yarn frame is (1000±2)mm;
[0034] Vertical measuring ruler: the length is 1m, and the division value is 1mm. There is a hook made of steel wire with a diameter of 2mm on the upper end, and the outer circle upper end of the hook at the yarn hanging place is flush with the zero position of the measuring scale;
[0035] Tensioner: There is a hook made of steel wire with a diameter of 2mm at one end. The weight is calculated according to the nominal linear density, the light load is 0.0018cN / dtex, and the heavy load is 0.1cN / dtex;
[0036] Example: 83dtex / 36f: 50×...
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Abstract
The invention relates to a method for detecting tightening elongation rate and elastic recovery rate of composite elastic fiber of chemical fiber, and mainly aims to solve problems of complex means for detecting main technical indexes of the fiber. The composite elastic fiber is prepared into skein which is treated in boiling water and then measured the length thereof under light and heavy load conditions. The detection method comprises taking composite elastic fiber; leading rolled skein head to a yarn frame of a skein yarn length measurer through a tension applying device, adding pre-tension load and cutting at end to end; putting the skein on an absorbent gauze strip and packaging; boiling the gauze strip packaged with the skein in boiling water and then taking out and draining; hanging the skein on a hook of a vertical scale, adding a light load tension device at the end of the skein, and watching the tension device and the vertical scale horizontally; adding a heavy load tension device at the end of the skein, and watching the tension device and the vertical scale horizontally; and removing the heavy load tension device, adding the light load tension device, and watching the tension device and the vertical scale horizontally. The invention is advantageous by simple and accurate detection method.
Description
Technical field: [0001] The invention relates to a method for detecting the compression elongation and elastic recovery rate of chemical fiber composite elastic fibers, especially the method for detecting the main technical indicators of "polyethylene terephthalate / polypropylene terephthalate" composite elastic fibers method. Background technique: [0002] With the increase of domestic textile chemical fiber "polytrimethylene terephthalate / polyethylene terephthalate" elastic fiber production capacity and the expansion of market customer usage, the current "polytrimethylene terephthalate / polyethylene terephthalate" The detection methods of the main technical indicators of polyethylene terephthalate elastic fibers are not professional, and only refer to similar methods for detection, the quality indicators are difficult to guarantee, and the detection methods are complicated, expensive, high cost, long detection time, direct affect production. Invention content: [0003] T...
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IPC IPC(8): G01N3/08
Inventor 周峰郭静黄路
Owner 周峰
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