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A kind of preparation method of macromolecular hydrogen bond composite fiber

A technology of macromolecules and composites, applied in spinning solution preparation, conjugated synthetic polymer artificial filament, wet spinning, etc., can solve problems such as uneven expansion, uneven composition, and uneven structure, and achieve Low equipment requirements, low cost, green and environmentally friendly preparation process

Active Publication Date: 2017-01-04
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of fiber is three-dimensional curled and highly fluffy; at the same time, it has the disadvantages of uneven composition, uneven structure, and uneven expansion.

Method used

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  • A kind of preparation method of macromolecular hydrogen bond composite fiber
  • A kind of preparation method of macromolecular hydrogen bond composite fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Raw materials: PAA, relative molecular mass: 450KDa; PEO, relative molecular mass: 600kDa.

[0032] Add PAA and PEO to water respectively, and stir at a constant speed for 8 hours at room temperature to form an aqueous solution with a mass fraction of 8%, and mix them at a ratio of 1:1. Add NaOH solution dropwise to make a uniform and stable spinning solution; then filter (use a tank filter to filter, the filter cloth is made of polyester, the pore size of the filter material is 200 mesh, the filter cartridge is made of stainless steel, and the filter pressure is 0.1~ 0.5MPa), the spinning solution was degassed by centrifugation at 25°C for 45min at a speed of 4500r / min. Using the wet spinning process, a single-hole spinneret is used. The diameter of the spinneret hole is 0.08mm. The spinning liquid is extruded through the metering pump and the spinneret, and then enters an acidic coagulation bath at 25 ° C. The coagulation bath is pH = 1. hydrochloric acid solution to...

Embodiment 2

[0034] Raw materials: PAA, relative molecular mass: 450kDa; PEO, relative molecular mass: 600kDa.

[0035]Add PAA and PEO to dewatered water respectively, and stir at a constant speed for 8 hours at room temperature to form an aqueous solution with a mass fraction of 8%, and mix them at a ratio of 1:3. Add NaOH solution dropwise to form a uniform and stable spinning solution; then filter (use a tank filter to filter, the filter cloth is made of nylon, the pore size of the filter material is between 1200 mesh, the filter cartridge is made of stainless steel, and the filter pressure 0.1~0.5MPa), the spinning solution was degassed by centrifugation at 25°C for 45min, and the rotation speed was 4500r / min. Using the wet spinning process, a single-hole spinneret is used. The diameter of the spinneret hole is 0.08mm. The spinning liquid is extruded through the metering pump and the spinneret, and then enters an acidic coagulation bath at 25 ° C. The coagulation bath is pH = 1. hydro...

Embodiment 3

[0037] Raw materials: PAA, relative molecular mass: 450kDa; PEO, relative molecular mass: 600kDa.

[0038] Add PAA and PEO to water respectively, and stir at a constant speed at room temperature for 8 hours to form an aqueous solution with a mass fraction of 8%, and mix them at a ratio of 5:1. Add NaOH solution dropwise to form a uniform and stable spinning solution; then filter (use a tank filter to filter, the filter cloth is made of polypropylene, the pore size of the filter material is between 500 mesh, the filter cartridge is made of stainless steel, and the filter pressure 0.1~0.5MPa), the spinning solution was degassed by centrifugation at 25°C for 45min, and the rotation speed was 4500r / min. Using the wet spinning process, a single-hole spinneret is used. The diameter of the spinneret hole is 0.08mm. The spinning solution is extruded through the metering pump and the spinneret, and then enters an acidic coagulation bath at 40 ° C. The coagulation bath is pH = 1.5. sul...

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Abstract

The invention relates to a preparation method of a macromolecular hydrogen bond compound fiber. The method comprises the following steps: respectively dissolving and mixing a macromolecular hydrogen bond donor and a macromolecular hydrogen bond acceptor, so as to obtain a uniform spinning solution; defoaming, filtering, standing and deforming the spinning solution, metering, entering a coagulating bath to coagulate and mold through a spinneret plate, so as to obtain a nascent fiber; and drying the nascent fiber, so as to obtain the macromolecular hydrogen bond compound fiber. Two high polymers which are difficult in fiber forming are successfully spun into a compound fiber on the basis of mutual action of hydrogen bonds, so that the spinning field and the application space of the high polymers are expanded; the high polymers also have novel properties, such as high elasticity and humidity sensitivity.

Description

technical field [0001] The invention belongs to the field of preparation of composite fiber materials, in particular to a preparation method of macromolecular hydrogen bond composite fibers. Background technique [0002] With the development of the chemical fiber industry, there are more and more varieties of chemical fibers, but there are also great differences in the spinning methods and processes of different chemical fibers. Traditional spinning methods include melt spinning and solution spinning. For melt spinning, it is usually a one-component system, which only involves the mass transfer between the polymer melt filament and the cooling medium. There is no composition change in the spinning system, and it is the simplest spinning process. But melt spinning is not suitable for polymers that cannot be melted or are thermally unstable. And wet spinning makes up for this defect of melt spinning to a certain extent. According to different physical and chemical principle...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/10D01F8/16D01D1/02D01D5/06
Inventor 杨曙光李皆富闻林刚刘树勇
Owner DONGHUA UNIV
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