Nylon fiber

A technology of nylon fiber and fiber, which is applied in the field of nylon fiber, can solve the problems of high proportion of nylon, decrease of viscosity of copolymerized nylon, inability to obtain boiling water shrinkage, etc., and achieve the effect of high boiling water shrinkage

Pending Publication Date: 2021-06-18
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 proportion of nylon 6 in the copolymer in this patent is too high, the viscosity of the obtained copolymerized nylon will decrease instead, and the ideal boiling water shrinkage cannot be obtained

Method used

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  • Nylon fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] will contain the structural unit A[—NH(CH 2 ) 5 CO—]50mol% and structural unit B[—HN(CH 2 ) 6 NHCO (CH 2 ) 4 CO —] 50mol% polymer slices are dried to 300-400ppm, put into the spinning silo for spinning, the spinning temperature is 300°C, and the spinning speed is 3300m / 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 28°C, the heat setting temperature is 170°C, and the elongation ratio is 1.65 times.

[0052] The monofilament fineness of the nylon fiber obtained by the above method is 1.0dtex, the breaking strength is 5.03cN / dtex, the boiling water shrinkage rate is 53.0%, the dry heat shrinkage rate is 6.4%, the thermal shrinkage stress is 0.19cN / dtex, and the temperature at the maximum thermal shrinkage stress is 163°C , the amount of rigid amorphous is 47%, and the viscosity is 3.7.

Embodiment 2

[0054] will contain the structural unit A[—NH(CH 2 ) 5 CO—]60mol% and structural unit B[—HN(CH 2 ) 6 NHCO (CH 2 ) 4 CO —] 40mol% polymer chips are dried to 300-400ppm, put into the spinning silo for spinning, the spinning temperature is 305°C, and the spinning speed is 3200m / 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 20°C, the heat setting temperature is 165°C, and the elongation ratio is 1.58 times.

[0055] The monofilament fineness of the nylon fiber obtained by the above method is 1.5dtex, the breaking strength is 5.31cN / dtex, the boiling water shrinkage rate is 60.7%, the dry heat shrinkage rate is 7.2%, the thermal shrinkage stress is 0.20cN / dtex, and the temperature at the maximum thermal shrinkage stress is 170°C , the amount of rigid amorphous is 54%, and the viscosity is 3.2.

Embodiment 3

[0057] will contain the structural unit A[—NH(CH 2 ) 5 CO—]67mol% and structural unit B[—HN(CH 2 ) 6 NHCO (CH 2 ) 4 CO —] 33mol% polymer chips are dried to 300-400ppm, put into the spinning silo for spinning, the spinning temperature is 305°C, and the spinning speed is 3100m / 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 20°C, the heat setting temperature is 160°C, and the elongation ratio is 1.54 times.

[0058] The monofilament fineness of the nylon fiber obtained by the above method is 2.2dtex, the breaking strength is 5.78cN / dtex, the boiling water shrinkage rate is 63.3%, the dry heat shrinkage rate is 7.8%, the thermal shrinkage stress is 0.32cN / dtex, and the temperature at the maximum thermal shrinkage stress is 172°C , the amount of rigid amorphous is 57%, and the viscosity is 3.9.

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Abstract

The invention discloses nylon fiber. The fiber is obtained by melt spinning of independent slices. The boiling water shrinkage rate of the nylon fiber is 15-65%; under the condition of heating at 160 DEG C for 15 minutes, the dry heat shrinkage rate of the fiber is 2-18%; and the thermal shrinkage stress of the fiber is 0.1-0.4 cN/dtex, and the temperature is 130-190 DEG C when the thermal shrinkage stress is maximum. The fiber has the high boiling water shrinkage rate and can be used for developing and manufacturing materials with compact feeling and plush feeling on the surface.

Description

technical field [0001] The invention relates to a nylon fiber, more specifically, to a nylon fiber with high shrinkage performance. Background technique [0002] Generally, we refer to fibers with high shrinkage as high shrinkage fibers. High-shrinkage fibers are widely used in textile products. It can be blended with conventional fibers into yarn, and then boiled or steamed in a tension-free state. High-shrinkage fibers are curled, while conventional fibers are bound by high-shrinkage fibers. Curled into loops, making the blended yarn fluffy and round like wool yarn, forming a yarn with 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 and dense fluff. Therefore, according to the analysis of the current international market demand, 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 Applications(China)
IPC IPC(8): D01F6/80
CPCD01F6/80
Inventor 陈峰黄儒吉宫隆之
Owner TORAY FIBER RES INST(CHINA) CO LTD
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