Cellulose fiber, preparation method thereof and equipment

A technology of cellulose fibers and manufacturing methods, which is applied in the field of chemical fibers and can solve problems such as poor mechanical properties of fibers

Active Publication Date: 2012-05-30
CHINESE TEXTILE ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0027] At present, the solvent system urgently needs to solve the problem of poor mechanical properties of fibers (usually less than 2cN / dtex)

Method used

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  • Cellulose fiber, preparation method thereof and equipment
  • Cellulose fiber, preparation method thereof and equipment
  • Cellulose fiber, preparation method thereof and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] In a 1.5L conical bottom kettle, add 940 grams of 7.5wt% NaOH / 14wt% urea mixed aqueous solution, cool it to -6°C, then add 60 grams of cotton pulp (polymerization degree 500) and stir rapidly until the solution is clear and transparent.

[0088] The required spinning solution was obtained by removing air bubbles in the solution under reduced pressure, and nitrogen gas was injected into the kettle to 0.5MPa, and the valve at the bottom of the kettle, the gear metering pump and the temperature control system of the solution were opened, so that the spinning temperature was 25°C. The silk liquid is extruded from a spinneret with 0.07mm×1000 holes at a speed of 25m / min.

[0089] Place the spinneret on the attached figure 1 In the coagulation liquid downstream drafting device shown, the speed of the first godet roller at the rear end of the coagulation liquid downstream drafting device is set to 75m / min, and when the liquid level difference between the funnel and the coagula...

Embodiment 2

[0096] In a 1.5L conical bottom kettle, add 920 grams of 10wt% NaOH / 11.5wt% urea mixed aqueous solution, cool it to -7°C, then add 80 grams of wood pulp (polymerization degree 550) and stir rapidly until the solution is clear and transparent.

[0097] After removing air bubbles in the solution under reduced pressure, the required spinning solution was obtained, and nitrogen gas was injected into the kettle to 1.0 MPa, and the valve at the bottom of the kettle, the gear metering pump and the temperature control system of the solution were opened, so that the spinning temperature was 17°C. The spinning solution was extruded from a spinneret with 0.1 mm×500 holes at a speed of 25 m / min.

[0098] Place the spinneret on the attached figure 1 In the coagulation liquid downstream drafting device shown, the speed of the first godet roller at the rear end of the coagulation liquid downstream drafting device is set to 125m / min, and when the liquid level difference between the funnel and...

Embodiment 3

[0105] In a 1.5L conical bottom kettle, add 900 grams of 10.5wt% NaOH / 11.5wt% urea mixed aqueous solution, cool it to -8°C, then add 100 grams of wood pulp (polymerization degree 550) and stir quickly until the solution is clear and transparent .

[0106] The required spinning solution was obtained by removing air bubbles in the solution under reduced pressure, and nitrogen gas was injected into the kettle to 1.5MPa, and the valve at the bottom of the kettle, the gear metering pump and the temperature control system of the solution were opened, so that the spinning temperature was 10°C. The spinning solution was extruded from a spinneret with 0.1 mm×500 holes at a speed of 15 m / min.

[0107] Place the spinneret on the attached figure 2 In the coagulation liquid downstream drafting device shown, the diameter of the circular tube is 20mm. Set the speed of the first godet roller at the rear end of the coagulation liquid downstream drafting device to 105m / min, and adjust the flow...

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Abstract

The invention relates to the field of chemical fibers, in particular to a cellulous fiber, a preparation method thereof and equipment. The cellulose fiber mainly comprises cellulous, is prepared by the solidifying liquid co-current drawing and spinning technology, and meets the following conditions that the tension breakage strength of the fiber is higher than or equal to 2.0cN/dtex, the fineness of the fiber is equal to or smaller than 1.67dtex, the content of S elements in the fiber is smaller than or equal to 100ppm, the fibrillation index (F.I.) of the fiber is smaller than or equal to 2. In addition, the cellulose fiber is free of chemical compositions relevant to fibrillation treatment resistance. The invention further relates to the preparation method of the cellulous fiber and the equipment. The cellulose fiber is high in strength, low in fineness and free of fibrillation tendency, the preparation method is simple, and is easy to control and applicable to large-scale industrialized production, and the equipment is simple in structure, skillful in design and stable in condition.

Description

technical field [0001] The invention relates to the field of chemical fibers, in particular to a fiber with cellulose as its main component and a manufacturing method and equipment thereof. Background technique [0002] The structural unit in the cellulose molecular chain is glucose, and Oita contains a large number of hydroxyl, ether and glycoside bonds. The molecular chain structure of cellulose determines the inherent hygroscopicity, dyeability, wearing comfort and biodegradability of cellulose fibers. Natural cellulose fibers include cotton, hemp fibers, etc., mainly cotton fibers. Regenerated cellulose fibers include viscose fiber, cupro ammonia fiber, acetate fiber (cellulose acetate derivative fiber), etc., mainly viscose fiber, which has a development history of more than one hundred years. [0003] Since the middle of the last century, with the rapid development of the petroleum industry, synthetic fibers have occupied the main market of fiber materials due to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/00D01F2/02D01D5/06D01D5/14D01D13/00
Inventor 孙玉山陈功林李方全李琳王颖骆强徐纪刚徐鸣风孔令熙金云峰张均李晓俊陆伊伦
Owner CHINESE TEXTILE ACAD
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