Porous skin-and-core composite fiber and preparation method thereof

A composite fiber and skin-core technology, applied in fiber processing, cellulose/protein conjugated artificial filament, conjugated synthetic polymer artificial filament, etc., can solve the problem of inability to achieve good sensing, small specific surface area, etc. problems, to achieve the effect of excellent adsorption characteristics, large specific surface area, and good mechanical properties

Inactive Publication Date: 2017-07-14
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most widely used skin-core structural fibers in the market are hollow fibers, superfine fibers, artificial wool and refractory fibers. Because the skin-core fibers have the characteristics of strong flexibility, excellent mechanical properties, and low production costs, researchers gradually Core fibers are used in the fields of electrode materials, sensors, and water treatment. However, the fiber surface of the traditional skin-core structure is smooth and flat, and has the disadvantage of small specific surface area, which cannot realize the functions of sensing, conductivity, and adsorption well.

Method used

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  • Porous skin-and-core composite fiber and preparation method thereof
  • Porous skin-and-core composite fiber and preparation method thereof
  • Porous skin-and-core composite fiber and preparation method thereof

Examples

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Effect test

Embodiment 1

[0028] The preparation method of porous sheath-core composite fiber comprises the following steps:

[0029] 1) Preparation of skin-core composite fibers:

[0030] Weighing the cortex raw material: according to the mass ratio, weigh 900g of polypropylene and 100g of cellulose acetate butyrate, mix evenly to obtain the cortex raw material;

[0031] Core raw material: weigh 1000g of polypropylene;

[0032] Put the cortex raw material and the core layer raw material into a two-component sheath-core composite spinning machine, melt spinning at 200°C, the cortex raw material is extruded by twin-screw in the two-component sheath-core composite spinning machine, and the core layer raw material is passed The single-screw extrusion in the two-component sheath-core composite spinning machine obtains a sheath-core composite fiber composed of a core layer 1 and a cortex 2 (such as image 3 shown);

[0033] 2) Preparation of porous sheath-core composite fibers:

[0034] The sheath-core ...

Embodiment 2

[0037] The preparation method of porous sheath-core composite fiber comprises the following steps:

[0038] 1) Preparation of skin-core composite fibers:

[0039] Weighing cortex raw materials: according to mass ratio, weigh polyethylene 600g and cellulose acetate butyrate 400g, mix evenly to obtain cortex raw materials;

[0040] Core raw material: weigh polyethylene 4000g;

[0041] Put the cortex raw material and the core layer raw material into a two-component sheath-core composite spinning machine, melt spinning at 250°C, the cortex raw material is extruded by the twin-screw in the two-component sheath-core composite spinning machine, and the core layer raw material is passed through The single-screw extrusion in the two-component sheath-core composite spinning machine obtains a sheath-core composite fiber composed of a core layer 1 and a cortex 2 (such as image 3 shown);

[0042] 2) Preparation of porous sheath-core composite fibers:

[0043] The sheath-core composite...

Embodiment 3

[0046] The preparation method of porous sheath-core composite fiber comprises the following steps:

[0047] 1) Preparation of skin-core composite fibers:

[0048] Weighing the cortex raw materials: according to the mass ratio, weigh 800g of polyester and 200g of cellulose acetate butyrate, mix evenly to obtain the cortex mixture, and extrude the cortex mixture through twin-screws to obtain the cortex raw material;

[0049] Core material: weigh 250g of polyester;

[0050] Put the cortex raw material and the core layer raw material into a two-component sheath-core composite spinning machine, melt spinning at 300°C, the cortex raw material is extruded by twin-screws in the two-component sheath-core composite spinning machine, and the core layer raw material is passed through The single-screw extrusion in the two-component sheath-core composite spinning machine obtains a sheath-core composite fiber composed of a core layer 1 and a cortex 2 (such as image 3 shown);

[0051] 2) ...

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Abstract

The invention relates to the field of textile materials and especially relates to a porous skin-and-core composite fiber and a preparation method thereof. The porous skin-and-core composite fiber comprises a core layer, and also includes a porous skin layer which wraps the outer surface of the core layer. There are pores distributed uniformly in the porous skin layer, average diameter of the pores being 500-5000 nm. The preparation method includes the following steps: 1) production of the skin-and-core composite fiber: feeding a skin layer raw material and a core layer raw material into a double component skin-and-core type composite spinning machine to perform melt spinning to produce the skin-and-core composite fiber composed of the core layer and the skin layer; and 2) soaking the skin-and-core composite fiber in an acetone solution to extract cellulose acetate butyrate in the skin layer by means of the acetone, thereby producing the porous skin-and-core composite fiber. The porous skin-and-core composite fiber has large specific surface area and good mechanical performance.

Description

technical field [0001] The invention relates to the field of textile materials, in particular to a porous sheath-core composite fiber and a preparation method thereof. Background technique [0002] At present, fibers are widely used in textiles, packaging, medical and health, automobiles, electronic appliances, safety protection, environmental protection and other fields. With the progress of society and the improvement of people's living standards, the need for differentiation and functionalization of fibers is increasing. come higher. The production of skin-core composite fibers has promoted the development of fiber differentiation. Skin-core composite fibers are composed of two components, the skin layer and the core layer, which can make the fibers have some properties of the two materials of the skin layer and the core layer, giving the fibers more performance combination. At present, the most widely used skin-core structural fibers in the market are hollow fibers, su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/06D01F8/14D01F8/12D01F8/02D01F11/06D01F11/08D01D5/34
CPCD01F8/06D01D5/34D01F8/02D01F8/12D01F8/14D01F11/06D01F11/08
Inventor 郭启浩王栋赵青华蒋海青李沐芳梅涛吴永智
Owner WUHAN TEXTILE UNIV
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