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Method for preparing blend fibers of celluloses and high-fluidity elastomers

A high fluidity, blended fiber technology, applied in the direction of cellulose/protein conjugated artificial filament, fiber chemical characteristics, melt spinning method, etc., can solve the problems affecting the strength of cellulose, and achieve easy processing and molding, and promote energy Consumption, improve the effect of melt fluidity

Inactive Publication Date: 2013-03-20
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Second, cellulose is easily thermally degraded, seriously affecting the strength of cellulose

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The cellulose and ABS were vacuum-dried at 60° C. for 12 hours, and 400 g of cellulose, 200 g of ABS, and 1000 g of [BMIM]Cl were added into a high-speed mixer and mixed evenly.

[0024] The temperature of the first zone of the twin-screw extruder is 120°C, the temperature of the second zone is 120°C, the temperature of the third zone is 130°C, the temperature of the fourth zone is 140°C, the temperature of the fifth zone is 150°C, the temperature of the sixth zone is 160°C, and the temperature of the seventh zone 170°C, 180°C in the eighth zone, and 175°C in the head. The screw speed is 300 rpm, the extrusion pressure is 3 MPa, and the vacuum pump pressure is 0.8 MPa.

[0025] The spinnability of the cellulose / ABS blended melt is good, the final titer is 2.87dtex, the breaking strength is 4.21cN / dtex, and the elongation is 38.4%.

Embodiment 2

[0027] The cellulose and ABS were vacuum-dried at 70°C for 24 hours, and 450g of cellulose, 150g of ε-caprolactone, and 1200g of [BMIM]Cl were added to a high-speed mixer and mixed evenly.

[0028] The temperature of the first zone of the twin-screw extruder is 120°C, the temperature of the second zone is 120°C, the temperature of the third zone is 130°C, the temperature of the fourth zone is 140°C, the temperature of the fifth zone is 150°C, the temperature of the sixth zone is 160°C, and the temperature of the seventh zone 170°C, 180°C in the eighth zone, and 175°C in the head. The screw speed is 250 rpm, the extrusion pressure is 4 MPa, and the vacuum pump pressure is 0.9 MPa.

[0029] The spinnability of the cellulose / ABS blended melt is good, the final titer is 2.65dtex, the breaking strength is 3.94cN / dtex, and the elongation is 36.0%.

Embodiment 3

[0031] The cellulose and TPU were vacuum-dried at 80°C for 36 hours, and 450g of cellulose, 150g of TPU, and 1200g of [BMIM]Cl were added to a high-speed mixer and mixed evenly.

[0032] The temperature of the first zone of the twin-screw extruder is 100°C, the temperature of the second zone is 100°C, the temperature of the third zone is 110°C, the temperature of the fourth zone is 110°C, the temperature of the fifth zone is 120°C, the temperature of the sixth zone is 120°C, and the temperature of the seventh zone is 120°C. It is 130°C, the eighth zone temperature is 130°C, and the head temperature is 125°C. The screw speed is 400rpm, the extrusion pressure is 5MPa, and the vacuum pump pressure is 1MPa.

[0033] The spinnability of the cellulose / TPU blend melt is good, and the final titer is 2.73dtex, the breaking strength is 3.65cN / dtex, and the elongation is 34.2%.

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Abstract

The invention relates to a method for preparing blend fibers of celluloses and high-fluidity elastomers. The method comprises the steps of: (1) drying the celluloses and the high-fluidity elastomers in vacuum; (2) evenly mixing 20-30% of the celluloses, 50-70% of ionic liquid and 5-20% of the high-fluidity elastomers; (3) extruding, defoaming and filtering the mixture by a co-rotating twin screw extruder, and then spraying from a spinning nozzle; and (4) solidifying the fibers into solid, stretching the solid after washing, and winding to form cellulosic fibers. The good processability and mechanical property are endowed to materials on the basis of preserving the property of the celluloses, so that the celluloses are smelted fully; and the melt fluidity of the celluloses is improved, and the method has significance on implementation on high-temperature melt spinning engineering and industrialized production of the celluloses.

Description

technical field [0001] The invention belongs to the field of preparation of cellulose blended fibers, in particular to a method for preparing blended fibers of cellulose and high fluidity elastomer. Background technique [0002] Cellulose is a common natural polymer material. The research and development of this most abundant renewable resource in nature, especially the research on its modification, has aroused people's widespread attention this year. The currently commonly used cellulose modification methods include: derivatization modification, graft copolymerization modification and blending modification, among which the blending modification process is simple and easy to realize industrial production. Cellulose has good moisture resistance and good adhesion with rubber elastomers, but cellulose is not resistant to high temperatures, has low strength and low toughness. Thermoplastic elastomers have good impact resistance and fatigue resistance, high tear strength and hig...

Claims

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Application Information

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IPC IPC(8): D01F8/02D01F8/10D01F8/16D01F8/06D01F1/10D01D5/08D01D1/04
Inventor 余木火张玥李海峰李欣达黎欢
Owner DONGHUA UNIV
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