Preparation method of high-strength and high-crimp viscose fibers

A viscose fiber and crimping technology, applied in the field of high-strength and high-crimp viscose fiber, can solve the slow development of crimped viscose fiber and high-strength viscose fiber, limit the development and application of functional viscose fiber, and affect the development of downstream yarns and other problems, to achieve the effect of improving fiber strength and curling effect, improving curling effect, and high curling elasticity

Active Publication Date: 2020-03-27
赛得利(盐城)纤维有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the development of curly viscose fiber and high-strength viscose fiber at home and abroad is relatively slow, and there are very few studies on the combination of the two. On the one hand, it limits the development and application of functional viscose fiber. It also has a certain impact on the development of downstream yarns and fabrics.

Method used

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  • Preparation method of high-strength and high-crimp viscose fibers
  • Preparation method of high-strength and high-crimp viscose fibers
  • Preparation method of high-strength and high-crimp viscose fibers

Examples

Experimental program
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Effect test

Embodiment 1

[0043] (1) Preparation of viscose initial solution: the cellulose pulp is prepared through the steps of dipping, pressing, crushing, aging, yellowing, grinding, filtering and degassing to obtain a spinning solution; the index of the spinning solution is: α- Cellulose 8.5wt%, alkali-containing 7.5wt%, viscosity 130s (falling ball method), maturity 12.5ml (ammonium chloride method).

[0044] (2) Preparation of denatured spinning solution: using pre-spinning injection, injecting the denaturant solution into the spinning solution, and mixing uniformly to obtain the denatured spinning solution; the denaturant solution is a melamine solution; The added amount of the denaturant is 5.5wt% relative to the dry basis weight of α-cellulose in the spinning solution.

[0045] (3) Spinning forming: the denatured spinning solution is entered into the spinning bath, and the low spinning speed spinning is formed to obtain the as-spun fiber tow; the spinning bath contains H 2 SO 4 55g / L, ZnSO ...

Embodiment 2

[0049] (1) Preparation of viscose initial liquid: select wood pulp or cotton linter pulp, the degree of polymerization of the cellulose pulp is 750, iron 120ppm, ash content 0.02%; the cellulose pulp is soaked, squeezed, pulverized, aged , yellowing, grinding, filtering, and degassing steps to prepare the spinning solution; the concentration of the lye used for the impregnation is 250g / L, and the temperature of the lye is 25°C; the pressing ratio of the pressing is 1:3.1; The yellowing time, CS 2 The addition amount is 35wt% of the α-cellulose in the alkali cellulose obtained by aging, the yellowing temperature is 25° C., and the yellowing time is 55 minutes. The specifications of the spinning solution are: α-cellulose 8wt%, alkali 7.0wt%, viscosity 125s (falling ball method), maturity 12ml (ammonium chloride method).

[0050] (2) Preparation of denatured spinning solution: Inject the denaturant into the prepared spinning solution through a plunger metering pump by means of p...

Embodiment 3

[0055] (1) Preparation of viscose initial liquid: select wood pulp or cotton linter pulp, the degree of polymerization of the cellulose pulp is 800, iron 110ppm, ash content 0.05%; the cellulose pulp is soaked, squeezed, pulverized, aged , yellowing, grinding, filtering, and degassing steps to prepare the spinning solution; the concentration of the lye used for impregnation is 255g / L, and the temperature of the lye is 22°C; the squeezing ratio of the pressing is 1:3.0; The yellowing time, CS 2 The addition amount is 33wt% of the amount of α-cellulose in the alkali cellulose obtained by aging, the yellowing temperature is 23° C., and the yellowing time is 56 minutes. The indicators of the spinning solution are: α-cellulose 7.8wt%, containing 7.2wt% alkali, viscosity 130s (falling ball method), maturity 13ml (ammonium chloride method).

[0056] (2) Preparation of denatured spinning solution: Inject the denaturant into the prepared spinning solution through a plunger metering pu...

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Abstract

The invention discloses a preparation method of high-strength and high-crimp viscose fibers. The preparation method comprises the following steps: (1) carrying out dipping, squeezing, crushing, aging,yellowing, grinding, filtering and defoaming on cellulose pulp to prepare a spinning solution; (2) injecting a denaturant solution into the spinning solution, and carrying out uniform mixing to obtain a denatured spinning solution; (3) feeding the denatured spinning solution into spinning bath, and carrying out low-spinning-speed spinning forming to obtain nascent fiber tows; (4) first carrying out plasticizing drafting on the nascent fiber tows through plasticizing bath, and then carrying out air bath drafting and cooling in cold air; and (5) refining, oiling and drying the drafted fibers toobtain the high-strength and high-crimp viscose fibers. According to the preparation method of the high-strength and high-crimp viscose fibers, the crimp effect and the durability of the crimp effectof the fibers can be greatly improved, and the washing resistance of the crimp effect of the fibers can be improved.

Description

technical field [0001] The invention relates to the technical field of modified viscose fibers, in particular to a high-strength and high-crimp viscose fiber. Background technique [0002] Today, technological changes brought about by the development of science and technology are changing people's basic necessities of life, especially in the field of new materials. Consumers' demand for clothing has gradually shifted from warmth and durability to comfort, health care, and lightness. High-strength and high-crimp viscose fiber provides a new feeling for the application of viscose fiber. The warmth retention, bulkiness and comfort brought by crimp are particularly obvious. The high strength expands the application field of viscose fiber. [0003] At present, the development of curly viscose fiber and high-strength viscose fiber at home and abroad is relatively slow, and there are very few studies on the combination of the two. On the one hand, it limits the development and app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/08D01F11/02D01D1/02D01D5/06D01D5/14
CPCD01F2/08D01F11/02D01D1/02D01D5/06D01D5/14
Inventor 刘海洋叶荣明瞿俊荣吕正稳董帅希姗姗王法
Owner 赛得利(盐城)纤维有限公司
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