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Two-component split type composite DTY fiber and preparation method thereof

A composite fiber and two-component technology, applied in fiber processing, stretch spinning, filament/thread forming, etc., can solve the problems of harsh dyeing conditions and poor dyeability of PET

Active Publication Date: 2010-09-29
厦门象屿兴泓特种材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing split-type DTY fibers are nylon / polyester split-type composite fibers, that is, polyethylene terephthalate (PET) / polycaprolactam (PA6) composite DTY fibers, which are widely used in the preparation of knitwear and Imitation suede, etc., but due to the poor dyeability of PET, the dyeing conditions required for fabrics made of this nylon / polyester composite DTY fiber through fiber opening are relatively harsh, and it can only be achieved under high pressure and high temperature conditions. dyeing

Method used

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  • Two-component split type composite DTY fiber and preparation method thereof
  • Two-component split type composite DTY fiber and preparation method thereof
  • Two-component split type composite DTY fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 1. Preparation of double-group split-sheet DTY fibers

[0044] Take 78 parts of polytrimethylene terephthalate chips and dry them at 140°C, put them into a polyester spinning screw extruder and melt them at 275°C; take 22 parts of polycaprolactam chips, dry them at 90°C and put them into polyamide spinning The screw extruder melts at 270°C;

[0045] The melt of the two screw extruders was passed through as figure 2 The 8-split spinneret is extruded to obtain as-spun fibers. The following examples all use this spinneret to extrude to obtain 8-split as-spun fibers. The lobes between the fiber skeletons are composed of polycaprolactam, and the fiber lobes are polytrimethylene terephthalate;

[0046] Then, the as-spun fiber is cooled and shaped by ring air blowing device through a cooling blowing device, the cooling temperature is 23°C, and then oiled by oil tankers on both sides, the oil agent is 8-12wt% silicone emulsion, the oil content of the fiber after oiling 1.1%...

Embodiment 2 to Embodiment 4

[0051] 1. Preparation of double-group split-sheet DTY fibers

[0052] The concrete process parameter of this part operation among above-mentioned three embodiments sees Table 2:

[0053] The properties of the double-group split-sheet DTY fibers prepared in Examples 2 to 5 are listed in Table 1.

[0054] 2. Preparation of two-component microfiber fabric

[0055] The process of this part of the above-mentioned three embodiments is all the same as that of Embodiment 1.

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Abstract

The invention provides a two-component split type composite DTY fiber which is characterized in that the two components in the two-component composite DTY fiber are a polyester component and a polyamide component, wherein the polyester component is selected from one or more of polytrimethylene terephthalate, polybutylene terephthalate and cation normal- pressure dyeable polyester. The invention also provides a preparation method for preparing the composite DTY fiber, which comprises the following steps: respectively melting the polyester component and the polyamide component, then carrying out extrusion molding through a spinneret plate, cooling, applying oil, drafting, relieving stress and deforming by false twisting to obtain the two-component split type composite DTY fiber. The composite DTY fiber and the two-component superfine fiber fabric which are prepared by the method have the characteristics of good dyeing property and soft texture.

Description

technical field [0001] The invention relates to the field of fiber spinning, in particular to a double-group split-sheet type composite DTY fiber and a preparation method thereof. Background technique [0002] Composite fiber refers to a chemical fiber made of two polymers, two or more polymers, or the same polymer with different properties through composite spinning, and contains two or more immiscible components in the cross section of the fiber. point. According to the structure, common composite fibers include side-by-side type, sheath-core type, island-in-the-sea type, split type, etc. [0003] The same single fiber cross-section of the two-group split-type composite fiber is divided into several partitions, and the two components are arranged alternately. According to the different arrangement methods, the split-type composite fiber can be divided into orange-shaped and rice-shaped. , gear type, etc. The split-type composite fiber splits the two components from each...

Claims

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Application Information

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IPC IPC(8): D01F8/14D01F8/12D01D5/088D01D5/096D01D5/12D01D5/28D02G1/02
Inventor 张飞跃蔡世镇李森
Owner 厦门象屿兴泓特种材料有限公司
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