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Bi-component composite fiber and preparation method thereof

A composite fiber and two-component technology, applied in fiber processing, conjugated synthetic polymer artificial filament, filament/thread forming, etc., can solve the problem of weak physical bond strength, inability to smoothly perform needle punching, and excessive softness of nylon And other issues

Active Publication Date: 2012-10-10
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

[0005] The main problem of the prior art is: the superfine fiber synthetic leather that adopts compound sea-island fiber method to make can only retain the fiber of a kind of component, as nylon (polyamide fiber) or dacron (polyester fiber), and the characteristic of nylon is Too soft, polyester is characterized by being too rigid
[0007] However, when utilizing the split-type two-component composite fibers in the prior art to prepare non-woven fabrics, due to the weak physical bonding strength of polyester and polyamide, in the process of opening and carding the fibers, both The two components of the component composite fiber will be separated in advance, that is, the fibers will be opened, which will bring greater difficulty to the needle punching step of the non-woven fabric, resulting in the failure of smooth needle punching and even normal production.

Method used

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  • Bi-component composite fiber and preparation method thereof
  • Bi-component composite fiber and preparation method thereof
  • Bi-component composite fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Take 22 parts of polyethylene terephthalate chips and dry them at 170°C, put them into a polyester spinning screw extruder to melt and knead at 280°C, and add 3 parts of flux during the kneading, the flux is polyparaffin Butylene glycol phthalate; 75 parts of polycaprolactam slices were dried at 85°C and put into a polyamide spinning screw extruder at 270°C for melting and kneading.

[0054] The mixed products of two screw extruders were subjected to 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 polyethylene terephthalate and the lobes are polycaprolactam;

[0055] Then, the as-spun fiber is cooled and shaped by an annular cooling and blowing device, the cooling temperature is 22°C, and then oiled by a tanker on both sides. The oil agent is 4wt% silicone emulsion, and the oil content of the fiber after ...

Embodiment 2 to Embodiment 5

[0058] Use polyester, flux, polyamide identical with embodiment 1 in above-mentioned four embodiments, concrete process parameter is shown in Table 2:

[0059] Measure the performance of Examples 2 to 5 and list them in Table 1.

Embodiment 6

[0061] The fibers made in Examples 1 to 5 are made into non-woven fabrics through opening, carding, and acupuncture. During the preparation of non-woven fabrics, no fiber opening phenomenon occurs in advance. The process requirements and performance of non-woven fabrics are as follows: Table 3 is QB / T2888-2007.

[0062] Table 1, mechanical properties of the composite fiber prepared by the embodiment of the present invention

[0063]

[0064] Table 2 embodiment 2 to ~ embodiment 5 technological parameters

[0065]

[0066] Table 3, the non-woven fabric mechanical property that the embodiment of the present invention prepares

[0067]

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Abstract

The invention provides a bi-component composite fiber. The two components in the bi-component composite fiber comprise a polyester component and a polyamide component. The bi-component composite fiber comprises skeleton parts arranged in a radioactive mode and splinter parts filled in the skeleton parts; the two components form the skeleton parts and the splinter parts respectively; and the polyester component comprises polyester and a fluxing agent, and the fluxing agent accounts for 0.1 to 4 percent of the weight of the bi-component composite fiber. The fluxing agent is mixed into the polyester, and because the fluxing agent can increase the physical bonding strength between the polyester and the polyamide, when the bi-component composite fiber is loosened and carded, the two componentscan be prevented from performing fiber opening in advance to ensure the smooth progression of non-woven fabric production.

Description

technical field [0001] The invention relates to the field of fiber spinning, in particular to a two-component composite 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, sky-star type, island-in-the-sea type, split type, etc. [0003] Composite island-in-the-sea fiber is mainly used to make superfine fiber PU synthetic leather. Microfiber PU synthetic leather refers to synthetic leather with a microfiber structure with a fineness of less than 0.33dtex. Due to the strong water absorption of superfine fibers, the synthetic leather has hygroscopicity comparable to natural leather. In addition, microfiber PU synthet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01F8/12D01D5/32
Inventor 张飞跃许旭辉蔡世镇
Owner 厦门象屿兴泓特种材料有限公司
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