A kind of preparation method of nylon 6 fiber with high strength and low elongation

A high-strength, low-stretch, nylon technology, applied in fiber processing, stretch spinning, fiber type, etc., can solve the problems of functional masterbatch not functioning effectively, easy to react and influence each other, and influence of spinning fiber performance. , to achieve significant economic and social benefits, dimensional stability, and improved application performance.

Active Publication Date: 2019-04-23
YIWU HUADING NYLON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this operation is that the functional masterbatch is added before spinning the spinning solution, which will affect the spinnability of the spinning solution, and after the functional masterbatch and the spinning solution are mixed, they are easy to react and affect each other, resulting in spinning Resulting fiber properties are compromised and functional masterbatches cannot function effectively

Method used

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  • A kind of preparation method of nylon 6 fiber with high strength and low elongation
  • A kind of preparation method of nylon 6 fiber with high strength and low elongation
  • A kind of preparation method of nylon 6 fiber with high strength and low elongation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A preparation method of high-strength low-stretch nylon 6 fiber, comprising the following steps:

[0034] 1) Melting: Melting the pre-dried nylon 6 slices to obtain spinning solution.

[0035] 2) Spinning: The spinning solution enters the spinning assembly for spinning, and the monofilament is ejected from the spinneret.

[0036] 3) Bundle oiling: the monofilaments are bundled at the bundle oiling point and oiled on the surface of the filament bundle, wherein the spinning oil contains a mixture of nano-titanium dioxide and nano-zinc oxide and polymethylmethacrylate. Wherein, the addition amount of polymethacrylate is 0.05% of the fiber mass, and the addition amount of the anti-ultraviolet agent is 0.15% of the fiber mass.

[0037] 4) Thermal stretching: the oiled tow is thermally stretched through No. 1 combined roll, No. 2 combined roll, and No. 3 combined roll in sequence. Wherein, the draw ratio of the No. 1 combined roll is 1.05, the draw ratio of the No. 1 combin...

Embodiment 2

[0041] A preparation method of high-strength low-stretch nylon 6 fiber, comprising the following steps:

[0042] 1) Melting: Melting the pre-dried nylon 6 slices to obtain spinning solution.

[0043] 2) Spinning: The spinning solution enters the spinning assembly for spinning, and the monofilament is ejected from the spinneret.

[0044] 3) Cluster oiling: the monofilaments reach the cluster oiling point for clustering and oiling on the surface of the filament bundle, wherein the spinning oil contains a mixture of micron titanium dioxide and micron zinc oxide and polymethylmethacrylate. Wherein, the addition amount of polymethacrylate is 0.10% of the fiber mass, and the addition amount of anti-ultraviolet agent is 0.12% of the fiber mass.

[0045] 4) Thermal stretching: the oiled tow is thermally stretched through No. 1 combined roll, No. 2 combined roll, and No. 3 combined roll in sequence. Wherein, the draw ratio of the No. 1 combined roll is 1.02, the draw ratio of the No....

Embodiment 3

[0049] A preparation method of high-strength low-stretch nylon 6 fiber, comprising the following steps:

[0050] 1) Melting: Melting the pre-dried nylon 6 slices to obtain spinning solution.

[0051] 2) Spinning: The spinning solution enters the spinning assembly for spinning, and the monofilament is ejected from the spinneret.

[0052] 3) Bundle oiling: the monofilaments are bundled at the bundle oiling point and oiled on the surface of the filament bundle, wherein the spinning oil contains a mixture of nano-titanium dioxide and nano-zinc oxide and polymethylmethacrylate. Wherein, the addition amount of polymethacrylate is 0.15% of the fiber mass, and the addition amount of anti-ultraviolet agent is 0.05% of the fiber mass.

[0053] 4) Thermal stretching: the oiled tow is thermally stretched through No. 1 combined roll, No. 2 combined roll, and No. 3 combined roll in sequence. Wherein, the draw ratio of the No. 1 combined roll is 1.03, the draw ratio of the No. 1 combined r...

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Abstract

The invention relates to a method for preparing high-tenacity low-elongation polyamide 6 fibers. The method for preparing high-tenacity low-elongation polyamide 6 fibers comprises the following steps of: 1) fusion: sliding pre-dried polyamide 6 and performing fusion to obtain spinning solution; 2) spinning: performing spinning by enabling the spinning solution to enter a spinning component, wherein monofilaments are sprayed out from a spinneret plate; 3) bundling and oiling: bundling the monofilaments reaching a bundling and oiling point and oiling the surface of a bundle, wherein spinning oil contains polyamide chain extender and ultraviolet screening agent; 4)hot drawing: enabling oiled bundle to sequentially pass through No.1 combined rollers, No.2 combined rollers and No.3 combined rollers to perform hot drawing; 5) winding: enabling the bundle after hot drawing to pass through a separate interlacer and winding at a winding head to obtain high-tenacity low-elongation polyamide 6 fibers. The polyamide 6 fibers prepared by adopting the method disclosed by the invention has the characteristics of high tenacity and low elongation, the addition of functional additives does not influence the spinnability and fiber performance of the spinning solution, and the sunlight resistance, high temperature resistance and oxidation aging resistance of the fibers can be effectively improved.

Description

technical field [0001] The invention relates to the field of textiles, in particular to a method for preparing high-strength and low-stretch nylon 6 fibers. Background technique [0002] Nylon fiber has good moisture absorption, softness and good elasticity. It is suitable for underwear, sportswear and other fabrics, and has good wearing comfort. , especially under ultraviolet radiation, it is easy to break, the macromolecular chain segment becomes shorter, the molecular weight decreases, oxidative aging occurs, and the strength of the fiber and the finished product is seriously reduced. [0003] Such as figure 1 As shown, it is a partial process flow diagram of the production line of nylon fibers in the prior art. After the spinning liquid mixed with functional masterbatch is sprayed from the spinneret 1 into filaments, it is clustered and oiled at the cluster oiling point 2, and then After passing through the first drawing hot roll 300 and the first godet roll 400 with a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/60D06M15/263D06M11/46D06M11/44D01D5/096D01D5/16D01D10/02D02J1/08D06M101/34
CPCD01D5/096D01D5/16D01D10/02D01F6/60D02J1/08D06M11/44D06M11/46D06M15/263D06M2101/34
Inventor 张守运谭延坤
Owner YIWU HUADING NYLON
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