Polyamide sea-island fiber and preparation method and application thereof

A sea-island fiber and polyamide technology, applied in the field of polyamide materials, can solve the problems of uneven distribution of island components, large difference in component thickness, uneven blending, etc., and achieve good dyeing performance, high dyeing rate, and reduce greenhouse effect. Effect

Pending Publication Date: 2021-04-20
CATHAY R&D CENT CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The island-in-the-sea fiber is prepared by the blend spinning method, the island component is used as the dispersed phase, and the sea component is used as the matrix. The uneven blending during the processing may easily cause uneven distribution of the island component. After fiber opening, the component thickness varies greatly, affecting subsequent dyeing and causing color difference Phenomenon

Method used

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  • Polyamide sea-island fiber and preparation method and application thereof
  • Polyamide sea-island fiber and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0098] This embodiment provides a polyamide 56 / polyethylene island-fixed sea-island fiber preparation method, which includes the following steps:

[0099]1) Dry the island component polyamide 56 and the sea component polyethylene resin separately, control the moisture content of the island component to 800ppm after drying, and control the moisture content of the sea component to 60ppm after drying;

[0100] 2) Heat and melt a certain proportion of the above-mentioned island component and sea component resin respectively, the mass ratio of the island component and the sea component in the sea-island fiber is 70:30, and the two melts are transported to the spinning through the melt pipeline In the box, after being accurately metered by the metering pump, it is injected into the sea-island composite component in the spinning box, and is evenly distributed through the distribution pipe in the component, and finally the two melts are merged and extruded at the entrance of the spinne...

Embodiment 2

[0113] This embodiment provides a method for preparing polyamide 56 / low-density polyethylene island-fixed sea-island fibers, which includes the following steps:

[0114] 1) Dry the island component polyamide 56 and the sea component low-density polyethylene resin separately, control the moisture content of the island component to 1000ppm after drying, and control the moisture content of the sea component to 90ppm after drying;

[0115] 2) Heat and melt a certain proportion of the above-mentioned island component and sea component resin respectively, the mass ratio of island component and sea component in the sea-island fiber is 60:40, and the two melts are transported to the spinning through the melt pipeline In the box, after being accurately metered by the metering pump, it is injected into the sea-island composite component in the spinning box, and is evenly distributed through the distribution pipe in the component, and finally the two melts are merged and extruded at the e...

Embodiment 3

[0128] This embodiment provides a method for preparing polyamide 56 / water-soluble polyester island-fixing type sea-island fibers, which includes the following steps:

[0129] 1) Dry the island component polyamide 56 and the sea component water-soluble polyester resin separately, control the moisture content of the island component to 500ppm after drying, and control the moisture content of the sea component to 30ppm after drying;

[0130] 2) Heat and melt a certain proportion of the above-mentioned island component and sea component resin respectively, the mass ratio of the island component and the sea component in the sea-island fiber is 80:20, and the two melts are transported to the spinning through the melt pipeline In the box, after being accurately metered by the metering pump, it is injected into the sea-island composite component in the spinning box, and is evenly distributed through the distribution pipe in the component, and finally the two melts are merged and extrud...

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Abstract

The invention relates to the technical field of polyamide materials, and in particular relates to a polyamide sea-island fiber and a preparation method and application thereof. In the polyamide sea-island fiber, an island component is polyamide resin and is selected from one of polyamide 56, polyamide 510, polyamide 511, polyamide 512, polyamide 513, polyamide 514, polyamide 515 and polyamide 516, and preferably, the polyamide 56 or the polyamide 510; and a sea component is selected from one of polyethylene, low-density polyethylene, polystyrene, water-soluble polyester, polyester and polyurethane, preferably the polyethylene, the low-density polyethylene or the water-soluble polyester. The polyamide sea-island fiber disclosed by the invention has the advantages of better mechanical property, better softness, good dyeing property, high dyeing grey card grade, high dye uptake, deep dyeing and high color fastness.

Description

technical field [0001] The invention belongs to the technical field of polyamide materials, and relates to a polyamide sea-island fiber and its preparation method and application. Background technique [0002] Sea-island composite fibers, also known as hyperconjugated fibers, are formed by embedding one polymer (fibril) in another polymer (matrix) in a very fine form, and because the dispersed phase fibrils are in The fiber cross-section is island-like and is called sea-island fiber. The sea-island fiber is obtained by dissolving the sea components to obtain superfine fibers. According to the distribution of islands, they can be divided into two types: fixed islands and indeterminate islands. Island-fixed fiber island distribution is uniform and fixed, and composite spinning is generally used, that is, two polymers are spun through a melt composite spinning machine and a special spinning component, and one of the components is as uniform as an island Distributed in anothe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/12D01F8/06D01F8/14D01D5/08D01D5/088D01D5/092D01D5/12D01D5/36D01D10/02
CPCD01D5/36D01F8/06D01F8/14D01F8/12D01D5/08D01D5/34D01D5/088D01D5/092D01D5/12D01D10/02D10B2331/02
Inventor 孙朝续刘修才
Owner CATHAY R&D CENT CO LTD
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