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A kind of negative ion powder dispersion liquid for preparing negative ion viscose fiber and preparation method thereof

A technology of negative ion powder and viscose fiber, applied in the direction of fiber chemical characteristics, single-component cellulose rayon, rayon manufacturing, etc., can solve problems such as deterioration of spinning conditions, difficulty in coagulation bath filtration, and decrease in transparency of coagulation bath

Active Publication Date: 2018-07-24
COSMO LADY (CHINA) HOLDINGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention takes stearic acid as the tourmaline dispersion liquid that dispersant makes, and stability is poor, and stearic acid reacts with divalent zinc ion to form precipitate in viscose spinning coagulation bath, and the transparency of coagulation bath is reduced, and then Potential deterioration of spinning conditions, difficulty in coagulation bath filtration, etc.

Method used

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  • A kind of negative ion powder dispersion liquid for preparing negative ion viscose fiber and preparation method thereof

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preparation example Construction

[0052] The second aspect of the present invention aims to provide a kind of preparation method for the negative ion powder dispersion liquid that is used to prepare negative ion viscose fiber, comprises the following steps:

[0053] a) preparing an aqueous dispersant solution, then adding an electrolyte to the aqueous dispersant solution, and mixing to obtain an aqueous dispersant solution;

[0054] b) Add the negative ion powder to the aqueous dispersant solution prepared in step b), stir evenly, and grind until the medium particle size D50≤0.3 μm.

[0055] In some embodiments, the anion powder added in step b) is obtained by soaking in alkaline solution in advance and then filtering.

[0056] In the method of the present invention, the negative ion powder is soaked in an alkaline solution to weaken the intercrystalline structure of the negative ion powder, greatly increase the wet grinding effect, and shorten the grinding time by 3 to 4 times.

[0057] In some embodiments, ...

specific Embodiment approach

[0079] In order to enable those skilled in the art to better understand the technical solutions of the present invention, some non-limiting examples are further disclosed below to further describe the present invention in detail.

[0080] The reagents used in the present invention can be purchased from the market or can be prepared by the methods described in the present invention.

Embodiment 1

[0082] Negative ion dispersion and its preparation:

[0083] components

Weight (g)

tourmaline powder

100

flat plus

20

sodium sulfate decahydrate

150

[0084] Weigh 100g of tourmaline powder in a 1L beaker, add 500g of 30% sodium hydroxide, soak for 24h, suction and filter through a Buchner funnel, filter dry, and weigh 139g.

[0085] Preparation of dispersant aqueous solution: weigh 20g of Pingping, 150g of sodium sulfate decahydrate, mix and add to a 1-liter beaker, slowly add deionized water, add while stirring, until the solid mixture is completely dissolved, the dispersant weighs 455g, measure The specific gravity is 1.46g / cm 3 .

[0086] Add 139g of filter cake to 455g of dispersant aqueous solution, stir evenly, add 500g of zirconia beads with a diameter of 2.0 to 2.8mm in an experimental vertical grinder for grinding, and use a laser particle size analyzer to detect during the process. When the diameter D50 is ground to...

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Abstract

The invention relates to a negative ion powder dispersion liquid for preparation of negative ion viscose fibers and a preparation method thereof, wherein the dispersion liquid comprises a negative ion powder, a dispersant and an electrolyte which are dissolved in an aqueous solution; the dispersant is firstly made into a dispersant aqueous solution, the relative density of the dispersant aqueous solution is 1.35 g / cm<3>-1.5 g / cm<3>, and the content of the dispersant in the dispersant aqueous solution is 2.5%-5%; the mass ratio of the addition amount of the negative ion powder to the addition amount of the dispersant is 5:1-10:1; the dissolved quantity of the electrolyte is close to saturation or is saturated in the dispersant aqueous solution; the medium particle diameter D50 of the negative ion powder dispersion liquid is less than or equal to 0.3 [mu]m. The negative ion powder dispersion liquid can be used for preparation of the negative ion viscose fibers having the high negative ion powder addition amount of 3%-6% and the fiber dry fracture strength of 2.2 cN / dTex or above; the method is simple to operate, economical, and suitable for industrialized production.

Description

technical field [0001] The invention relates to the field of textile chemical industry, in particular to an anion powder dispersion for preparing anion viscose fibers and a preparation method thereof. Background technique [0002] Viscose fiber, which belongs to man-made fiber, is a kind of textile fiber widely used at present. Ordinary viscose fiber has excellent wearing properties and a wide range of applications. Viscose fiber is alkali cellulose made from natural cellulose, and then reacted with carbon disulfide to form cellulose xanthate. The viscous solution obtained by dissolving in dilute alkali solution is called viscose, and viscose is wet-spun After a series of treatment procedures, the viscose fiber is formed, and the preparation process of the usual viscose fiber is well known in the art. [0003] With the improvement of people's living standards and the advancement of the textile industry's technical level, various viscose fibers with additional functions have...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F1/10D01F2/10
CPCD01F1/10D01F2/10
Inventor 蒋芳玉吴纯玲
Owner COSMO LADY (CHINA) HOLDINGS
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