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Cellulose fiber cationic modification method

A technology of cationic modification and cellulose fiber, which is applied in the treatment of cellulose fiber and the field of cationic modification of cellulose fiber. It can solve the problems of difficult wastewater treatment, large amount of alkali consumption, pollution, etc., and achieve low cost and high reaction rate. full effect

Inactive Publication Date: 2015-02-18
HMEI THREAD CO LTD OF YINBIN SICHUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The present invention aims to solve the following problems in the process of dyeing the cellulose fibers after modification in order to reduce the consumption of dyes, inorganic salts and alkali in the prior art: The degree of polluti

Method used

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  • Cellulose fiber cationic modification method
  • Cellulose fiber cationic modification method
  • Cellulose fiber cationic modification method

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Modification process of cellulose fiber:

[0061] Put the cellulose fiber into the container, add water to the container, and then modify the cellulose fiber with two cationic modifiers, the small molecule quaternary ammonium salt cationic modifier and the high molecular quaternary ammonium salt cationic modifier After the modification treatment is completed, modified cellulose fibers are obtained; the small molecular quaternary ammonium salt cationic modifier is an epoxy quaternary ammonium salt compound, and the high molecular quaternary ammonium salt cationic modifier is a cationic polyacrylamide class of compounds.

[0062] The above process is the cellulose fiber modification process of the present invention, and the modified cellulose fiber can be obtained with a Zeta electrode potential value of 0-25mV when the pH value is 6.5-8.5. Due to the small molecular weight of the small molecular quaternary ammonium salt cationic modifier, it can not only be adsorbed on ...

Embodiment 2

[0064] Modification process of cellulose fiber:

[0065] Put the cellulose fiber into the container, add water to the container, and then modify the cellulose fiber with two cationic modifiers, the small molecule quaternary ammonium salt cationic modifier and the high molecular quaternary ammonium salt cationic modifier After the modification treatment is completed, modified cellulose fibers are obtained; the small molecular quaternary ammonium salt cationic modifier is an epoxy quaternary ammonium salt compound, and the high molecular quaternary ammonium salt cationic modifier is a cationic polyacrylamide class of compounds.

[0066] The cellulose fibers are selected from viscose filaments, viscose staple fibers, modal, tencel, cotton fibers, yarns and fabrics made from the aforementioned cellulose fibers.

[0067] The modification process of the present invention is applicable to all kinds of cellulose fibers, and also includes twisted yarns (hank form or cheese form) of th...

Embodiment 3

[0069] The small molecule quaternary ammonium salt cationic modifier of the present invention is an epoxy quaternary ammonium salt compound;

[0070] The polymer quaternary ammonium salt cationic modifier of the present invention is a cationic polyacrylamide compound.

[0071] Epoxy quaternary ammonium compound:

[0072]

[0073] Cationic polyacrylamide compounds:

[0074]

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Abstract

The invention relates to a cellulose fiber cationic modification method, belonging to the technical field of textile dyeing. The cellulose fiber modification process comprises the following steps: putting cellulose fibers in a container, then adding water to the container, and then carrying out modification treatment on the cellulose fibers with two kinds of cationic modifiers, namely low molecular quaternary ammonium salt cationic modifiers and high molecular quaternary ammonium salt cationic modifiers, thereby obtaining modified cellulose fibers after modification treatment is completed, wherein the low molecular quaternary ammonium salt cationic modifiers are epoxy quaternary ammonium salt compounds; the high molecular quaternary ammonium salt cationic modifiers are cationic polyacrylamide compounds. The cellulose fiber cationic modification method has the beneficial technical effects that the two kinds of specific modifiers are adopted and the synergistic effects of the modifiers are given play to, so that the modified cellulose fibers achieve salt-free low-alkali dyeing in subsequent dyeing, have the effects of reducing pollution, saving the cost, simplifying the process and reducing the difficulty, have good modification and subsequent dyeing effects, and are suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a treatment method for cellulose fibers, more specifically, the invention relates to a cationic modification method for cellulose fibers, and belongs to the technical field of textile dyeing. Background technique [0002] The dye uptake rate of traditional cellulose fiber dyeing process is generally around 40-70%. The dye uptake rate is low and there are many floating colors. In order to achieve the purpose of color fixation, the hydroxyl groups on the cellulose need to be ionized under strong alkaline conditions, so a large amount of soda ash must be added to the dyeing solution in the later stage of dyeing. The treatment of inorganic salts and alkalis has always been a problem that plagues the industry. A large amount of inorganic salts that are neither recyclable nor degradable are discharged into rivers and lakes, seriously polluting water quality. Due to the high permeability of salt, the surrounding soil is salinized and ...

Claims

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Application Information

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IPC IPC(8): D06P1/66D06P1/52D06P3/60D06P5/22
Inventor 廖周荣段太刚贾卫平何大雄汤伟张海刘志军
Owner HMEI THREAD CO LTD OF YINBIN SICHUAN
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