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Porous active polyethylene fiber as well as preparation method and application thereof

A technology of polyethylene fiber and polyethylene resin, applied in the field of porous active polyethylene fiber and its preparation

Pending Publication Date: 2021-04-30
CHINESE TEXTILE ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the melt spinning process has not been adopted, and the size and number of fiber holes are adjusted through the online process to achieve the characteristics of porosity and activity of the fiber.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0067] The preparation method of the porous active polyethylene fiber provided by the invention comprises the steps:

[0068] 1) Polyethylene resin is melted to obtain spinning melt;

[0069] 2) The spinning melt is metered and extruded from the spinneret hole to obtain a thin stream of melt;

[0070] 3) The thin stream of melt is cooled and formed to obtain solid silk;

[0071] 4) The solid silk is subjected to thermal stretching treatment to obtain polyethylene fibers,

[0072] Wherein, during or after any process of thermal drawing of solid filaments to obtain polyethylene fibers, at least one ultrasonic water bath treatment is performed to obtain porous active polyethylene fibers.

[0073] Wherein, in the step that the polyethylene resin is melted to obtain a spinning melt, inorganic powder is added to the polyethylene resin.

[0074] Wherein, the addition amount of the inorganic powder is 0.3%-10% of the mass of the polyethylene resin.

[0075] Wherein, the inorganic ...

Embodiment 1

[0103] Sodium chloride with a diameter of 500nm is dispersed in polyethylene resin with a viscosity-average molecular weight of 80,000 (the addition of sodium chloride is 10% of the quality of the polyethylene resin), and the polyethylene melt is obtained through twin-screw extruder melt extrusion. After the metering pump is metered, it is extruded through the spinneret holes with a diameter of 0.6mm and a number of 10 holes to form a thin stream of melt. The mesh numbers of the first and second filter screens are 10 mesh and 100 mesh respectively. The melt fine stream is solidified by 20°C ring blowing and 4m-long tunnel wind to obtain solid silk. The solid silk is stretched 3 times at 138°C, and then enters an ultrasonic water bath for ultrasonic washing. The temperature of the water bath is 60°C, and the travel of the tow in the ultrasonic water bath is 4m. Finally, the surface has a porous polyethylene fiber with an average diameter of 500nm, a fiber breaking strength of 8...

Embodiment 2

[0105] Sodium chloride with a diameter of 10000nm is dispersed in polyethylene resin with a viscosity-average molecular weight of 1 million (the addition of sodium chloride is 3% of the quality of the polyethylene resin), and the polyethylene melt is obtained through twin-screw extruder melt extrusion. After metering by the metering pump, it is extruded through a spinneret hole with a diameter of 0.6mm and a number of 100 holes to form a thin stream of melt. The mesh numbers of the first and second filter screens are 10 mesh and 100 mesh respectively. The melt fine stream is solidified by 20°C ring blowing and 4m long tunnel wind to obtain solid silk. The solid silk is stretched 3 times at 138°C, and then enters an ultrasonic water bath for ultrasonic washing. The temperature of the water bath is 60°C, and the travel of the tow in the ultrasonic water bath is 4m. Finally, porous polyethylene fibers with an average diameter of 10000 nm on the surface were obtained, the fiber br...

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Abstract

The invention discloses a porous active polyethylene fiber as well as a preparation method and application thereof, and belongs to the technical field of textiles. The monofilament diameter of the porous active polyethylene fiber is 20 mu m to 100 mu m, and the surface of the porous active polyethylene fiber is provided with a micropore structure. The preparation method of the porous active polyethylene fiber comprises the following steps of melting polyethylene resin to obtain a spinning melt; metering the spinning melt, and extruding from spinneret orifices to obtain melt trickles; cooling and molding the melt trickles to obtain solid filaments; enabling the solid filaments to be subjected to thermal stretching treatment to obtain polyethylene fibers, wherein in any process or after the solid filaments are subjected to thermal stretching to obtain the polyethylene fibers, at least one time of ultrasonic water bath treatment is performed to obtain the porous active polyethylene fibers. The invention also relates to the application of the porous active polyethylene short fibers for dispersion into cement. The polyethylene fiber prepared by the method has a microporous structure on the surface, has relatively high activity, and has the characteristics of easy dyeing, easy gum dipping, easy crosslinking, easy grafting and the like.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a porous active polyethylene fiber, its preparation method and application. Background technique [0002] Polyethylene fiber contains flexible macromolecular chains, has high strength and modulus and other mechanical properties, strong wear resistance, impact resistance, low temperature resistance and other characteristics; in terms of chemical properties, polyethylene fiber has high crystallinity, No functional groups, low surface energy and other properties, therefore, the chemical properties are stable, and the fiber properties will not change under common acid, alkali, salt and other conditions. Since the surface of polyethylene fiber is smooth and flat, and the interface adhesion with other materials is low, when the surface is dyed or painted, it is easy to lose color and paint. At present, the melt spinning process has not been adopted, and the fiber hole size and number...

Claims

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Application Information

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IPC IPC(8): D01F6/04D01F11/06D01D5/08D01D1/10D01D4/02D01D5/092D01D5/12D01D10/06
CPCD01F6/04D01F11/06D01D5/08D01D1/106D01D4/02D01D5/092D01D5/12D01D10/06
Inventor 李方全孙玉山王万杰孔令熙程金龙苏自强
Owner CHINESE TEXTILE ACAD
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