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High-strength viscose fiber and preparation method thereof

A viscose fiber and high-strength technology, applied in the field of textile fiber processing, can solve the problems of not being able to meet the printing and dyeing processing requirements of viscose fiber products, poor hot water resistance of fibers, and low dry strength of viscose fibers, etc., to achieve high strength and reinforced The effect of strength and good elasticity

Active Publication Date: 2017-11-03
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the addition of polyvinyl alcohol can improve the wet strength of viscose fiber, polyvinyl alcohol has not been cross-linked in this process, and the hot water resistance of the fiber is poor, which still cannot meet the subsequent printing and dyeing processing requirements of viscose fiber products; and , the viscose fiber made by adding polyvinyl alcohol has low dry strength, high brittleness, and easy to form fibrillation structure, which leads to poor practicability of this technology

Method used

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Effect test

preparation example Construction

[0024] The embodiment of the present invention provides a kind of preparation method of high-strength viscose fiber, it comprises the following steps:

[0025] S1. Add the first enhancer to the viscose collagen solution, and stir evenly to obtain a mixed solution. Wherein, the first strengthening agent is at least one of the polyamide epichlorohydrin aqueous solution with a mass concentration of 12% to 13%, and the polyethyleneimine aqueous solution with a mass concentration of 12% to 13%, and the above solutions are all soluble in In the viscose collagen solution, the mass concentration of polyamide epichlorohydrin aqueous solution is preferably 12.5%, the mass concentration of polyethyleneimine aqueous solution is preferably 12.5%, and the first reinforcing agent is preferably polyamide epichlorohydrin with a mass concentration of 12.5%. aqueous solution. The addition amount of the first enhancer is 1%-5% of the weight of the viscose collagen solution. The specific prepara...

Embodiment 1

[0043] Embodiment 1 provides a kind of high-strength viscose fiber, and it is prepared according to the following method:

[0044] 100kg viscose collagen solution and 1kg polyamide epichlorohydrin aqueous solution (mass concentration is 12.5%, is that polyamide epichlorohydrin is dissolved in water and is prepared) is put into the blender and stirred, and the stirring time is 2 hours, and the blender The rotating speed is 200 rpm, and the mixed solution is obtained.

[0045] Put the mixed solution into the defoaming kettle for defoaming, then filter three times, then pass through the spinneret, and enter the 100kg coagulation bath that has added 10kg urea-formaldehyde resin aqueous solution (that is, add 10kg urea-formaldehyde resin aqueous solution in the 100kg coagulation bath and stir well. The mass concentration of the urea-formaldehyde resin aqueous solution is 12.5%, which is prepared by dissolving the urea-formaldehyde resin in water), and forming to obtain the viscose ...

Embodiment 2

[0049] Embodiment 2 provides a kind of high-strength viscose fiber, and it is prepared according to the following method:

[0050] 100kg viscose collagen solution and 5kg polyamide epichlorohydrin aqueous solution (mass concentration is 12%, is that polyamide epichlorohydrin is dissolved in water and is prepared) is put into the blender and stirred, and the stirring time is 2 hours, and the blender The rotating speed is 1000 rpm, and the mixed solution is obtained.

[0051] Put the mixed solution into the defoaming kettle for degassing, then pass through two filters, and finally pass through the spinneret, and enter the solution that has been added with 0.01kg polyamide epichlorohydrin aqueous solution (mass concentration is 12%, which is made of polyamide epoxy In the 100kg coagulation bath (the coagulation bath is mixed by 6kg sulfuric acid, 30kg sodium sulfate and 1.6kg zinc sulfate) formed by dissolving chloropropane in water), shaping obtains viscose fiber.

[0052] The ...

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Abstract

The invention provides a high-strength viscose fiber and a preparation method thereof, belonging to the technical field of textile fiber processing. The preparation method comprises the following steps: adding a first reinforcing agent into a stock solution of viscose glue and carrying out uniform mixing so as to obtain a mixed solution; subjecting the mixed solution to defoaming and filtering, then allowing the treated solution to pass through a spinneret plate and then enter a coagulation bath with a second reinforcing agent, and carrying out forming so as to obtain a viscose fiber; and subjecting the viscose fiber to drafting and allowing the treated viscose fiber to enter a spinning bath solution with a third reinforcing agent for a spinning bath. According to the preparation method, different reinforcing agents are added in different steps of viscose fiber production, cross-linking among cellulose molecules is carried out, the strength of the viscose fiber is continuously improved, and the prepared high-strength viscose fiber has high wet strength and dry strength; therefore, the preparation method and the prepared high-strength viscose fiber are suitable for promotion and application.

Description

technical field [0001] The invention relates to the technical field of textile fiber processing, and in particular to a high-strength viscose fiber and a preparation method thereof. Background technique [0002] Viscose fiber is a kind of textile fiber that is widely used at present. It is a man-made fiber produced with natural cellulose as the main raw material. Natural cellulose materials such as cotton, bamboo, and wood pulp provide a wide range of raw material bases for viscose fiber. In addition, certain properties of viscose fiber and natural cotton fiber are very similar, both have good hygroscopicity, dyeability, antistatic, comfortable to wear, have advantages that chemical fibers cannot match, and the product has good wearing performance. But its disadvantages are also obvious: the strength of viscose fiber is poor, especially the wet strength is low, usually only about one-half of the dry strength. [0003] For more than 100 years, the production process of visco...

Claims

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Application Information

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IPC IPC(8): D01F2/08
CPCD01F2/08
Inventor 李文斌徐卫林李昌垒李林峰
Owner WUHAN TEXTILE UNIV