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a nylon fiber

A technology of nylon fiber and fiber, which is applied in the field of nylon fiber, and can solve problems such as prolonging the production cycle

Active Publication Date: 2020-05-15
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the technology provided by this invention is to use two kinds of nylon blending before spinning, which adds a step compared to direct single chip spinning and prolongs the production cycle.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] will contain the structural unit A[—NH(CH 2 ) 5 CO—] 93mol% and structural unit B[—HN(CH 2 ) 6 NHCO (CH 2 )4CO—]7mol% polymer (relative viscosity of 98% concentrated sulfuric acid is 3.6) sliced ​​and dried to 300~400 ppm, put into the spinning silo for spinning, the spinning temperature is 300°C, and the spinning speed is 3000 m / min. After the mixed chips are melted and measured, the filaments are discharged from the spinneret, cooled and oiled, and coiled by one-step process of spinning and stretching. The stretching temperature is 30°C, the heat setting temperature is 160°C, and the elongation ratio is 1.4 times.

[0035] The monofilament fineness of the nylon fiber obtained by the above method is 1.25dtex, the breaking strength is 5.17cN / dtex, the boiling water shrinkage is 46.8%, the dry heat shrinkage is 6.9%, and the thermal shrinkage stress is 0.22cN / dtex. The temperature at which the thermal shrinkage stress is maximum is 153°C.

Embodiment 2

[0037] will contain the structural unit A[—NH(CH 2 )5 CO—] 80mol% and structural unit B[—HN(CH 2 ) 6 NHCO (CH 2 ) 4 CO—] 20mol% polymer (relative viscosity of 98% concentrated sulfuric acid is 3.9) sliced ​​and dried to 300~400 ppm, put into spinning silo for spinning, spinning temperature is 300°C, spinning speed is 3000 m / min. After the mixed chips are melted and measured, the filaments are discharged from the spinneret, cooled and oiled, and coiled by one-step process of spinning and stretching. The stretching temperature is 30°C, the heat setting temperature is 160°C, and the elongation ratio is 1.4 times.

[0038] The monofilament fineness of the nylon fiber obtained by the above method is 1.25dtex, the breaking strength is 5.75cN / dtex, the boiling water shrinkage is 20.2%, the dry heat shrinkage is 8.4%, and the thermal shrinkage stress is 0.22cN / dtex. The temperature at which the thermal shrinkage stress is maximum is 160°C.

Embodiment 3

[0040] will contain the structural unit A[—NH(CH 2 ) 5 CO—] 90mol% and structural unit B[—HN(CH 2 ) 6 NHCO (CH 2 ) 4 CO—] 10mol% polymer (98% concentrated sulfuric acid relative viscosity is 3.7) sliced ​​and dried to 300~400 ppm, put into spinning silo for spinning, spinning temperature is 300°C, spinning speed is 3000 m / min. After the mixed chips are melted and measured, the filaments are discharged from the spinneret, cooled and oiled, and coiled by one-step process of spinning and stretching. The stretching temperature is 30°C, the heat setting temperature is 160°C, and the elongation ratio is 1.4 times.

[0041] The monofilament fineness of the nylon fiber obtained by the above method is 1.25dtex, the breaking strength is 5.31cN / dtex, the boiling water shrinkage is 45.3%, the dry heat shrinkage is 7.4%, and the thermal shrinkage stress is 0.21cN / dtex. The temperature at which the thermal shrinkage stress is maximum is 158°C.

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Abstract

The invention provides a high shrinkage nylon fiber, which is prepared by melting and spinning a single slice. The boiling water shrinkage of the fiber is 20 to 50%. After the fiber is heated for 15 minutes at a temperature of 160 DEG C, the dry heat shrinkage of the fiber is 3 to 10%. The thermal shrinkage stress of the fiber is 0.1 to 0.3 cN / dtex; and on the thermal shrinkage stress test curve of the fiber, the temperature is 150 to 160 DEG C, when the thermal shrinkage stress is maximal. The fiber has high boiling water shrinkage, and is suitable for the development and manufacturing of compact materials with a fluffy surface.

Description

technical field [0001] The present invention relates to a nylon fiber with high shrinkage properties. Background technique [0002] Fibers with high boiling water shrinkage are called high shrinkage fibers. High-shrinkage fibers are widely used in textile products. It can be blended with conventional products into yarn, and then boiled or steamed in a state of no tension. High-shrinkage fibers are curled, while conventional fibers are curled due to the constraints of high-shrinkage fibers. When it is formed into a loop, the yarn is fluffy and round like a woolen yarn, forming a yarn with a good plush feeling. This kind of yarn can be used to make fabrics with unique styles, and can also be used to make artificial fur, artificial suede, synthetic leather and blankets, etc. It has the characteristics of soft wool and dense fluff. Therefore, according to the current international market demand analysis, the demand for high-shrinkage fibers will increase significantly, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/80
Inventor 王蒋伟赵锁林藤森稔
Owner TORAY FIBER RES INST(CHINA) CO LTD
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