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Composite fiber and method for forming the same

A composite fiber and manufacturing method technology, applied in fiber processing, rayon manufacturing, fiber chemical characteristics, etc., can solve the problems of low melting point and softening point, affecting operation, and poor hand feeling of finished cloth.

Active Publication Date: 2017-12-08
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, after composite spinning of materials with different hydrophilicity and hydrophobicity, the interface between the two materials is weak, so there is often separation phenomenon, resulting in problems such as broken filaments in the post-processing process that affect the operation or the finished product fluffs and damages the appearance.
In addition, during the textile dyeing stage of the composite fiber formed by polyester and ethylene-vinyl alcohol copolymer, the ethylene-vinyl alcohol copolymer (EVOH) on the surface of the fiber often has swelling and gaps between fibers due to its low melting point and softening point. The phenomenon of melting and sticking occurs, which leads to the problem of poor hand feeling of the finished cloth

Method used

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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  • Composite fiber and method for forming the same
  • Composite fiber and method for forming the same
  • Composite fiber and method for forming the same

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1～4

[0042] Preparation Examples 1-4: Cross-linking modified granulation (with triallyl ester compound as cross-linking agent)

[0043] First, a crosslinking agent, triallyl isocyanurate (TAIC), ethylene-vinyl alcohol copolymer (EVOH) (44 mole percent ethylene), and a dispersant were mixed to obtain a mixture. Next, a crosslinking initiator, dicumyl peroxide, was added to the above mixture, followed by kneading. The kneading time is about 10 minutes, and the kneading temperature is about 200 to 230°C. Afterwards, the kneaded product is drawn and pelletized to obtain the cross-linked modified EVOH particles of Preparation Example 1.

[0044] The preparation methods of Preparation Examples 2 to 4 are the same as Preparation Example 1, except that the composition ratios of triallyl cyanurate (TAIC) and ethylene-vinyl alcohol copolymer (EVOH) in each preparation example are adjusted as shown in Table 1 . In Preparation Examples 1-4, the addition ratio of the dispersant is 0.5wt%. I...

preparation example 5

[0048] Preparation Example 5: Cross-linking modified granulation (with triallylamine compound as cross-linking agent)

[0049] The preparation method of Preparation Example 5 is the same as that of Preparation Example 1, except that triallyl cyanurate (TAIC) is replaced by triallylamine. The colloidal particle size in the product obtained by mixing in Preparation Example 5 was measured with a laser caliper, and the average particle size was measured to be 45 nm.

Embodiment 1

[0052] Example 1: composite fiber --- cross-linked modified EVOH (M-EVOH) / PET

[0053] The cross-linked modified EVOH particles (hereinafter abbreviated as M-EVOH) of 44% ethylene mole percent in Preparation Example 2 were used as the sheath component material of the composite fiber, and polyethylene terephthalate (PET) particles ( IV value: 0.64) As the core component material of the composite fiber, the above two materials were composite melt-spun. First, after winding at 2800m / min, it is stretched at 80°C and shaped at 150°C to form a fully drawn yarn (FOY). At this point, the manufacture of the composite fiber is completed. The specifications of the obtained composite fiber are: denier number 80D / 36F, strength 3.2(g / d), elongation 25±5(%).

[0054] Figure 3A ~ Figure 3B The cross-sectional scanning electron micrographs of the composite fiber prepared in Comparative Example 1 at different magnifications are shown, and it can be seen that the separation phenomenon of the...

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Abstract

A composite fiber is provided. The composite fiber includes a first region and a second region. The component of the first region includes a coloring agent and a resin. The component of the second region includes a crosslinked thermoplastic polymer and the crosslinked thermoplastic polymer includes gel particles with an average particle size no more than 1000 nm. A method for forming the composite fiber is also provided.

Description

technical field [0001] The invention relates to a composite fiber and its manufacturing method. Background technique [0002] In the textile fiber industry, there are many polyamide (nylon), polyester, and polyolefin products, but because these materials are hydrophobic, their fiber products have disadvantages such as non-hygroscopic and non-absorbent. In order to improve the above shortcomings, in the past, hydrophobic polymers such as polyester and hydrophilic polymers, such as ethylene-vinyl alcohol copolymer (Ethylene vinylalcohol copolymer; EVOH), were composite-spun to form core-sheath composites. fibers to improve the hydrophilic properties of polyester fibers. [0003] However, after co-spinning materials with different hydrophilic and hydrophobic properties, the interface between the two materials is weak, so separation often occurs, resulting in problems such as broken filaments in the post-processing process that affect the operation or the finished product fluff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/10D01F8/14D01F8/12D01F8/06D01F1/10D01D1/09D01D5/30D01D5/34
CPCD01D1/09D01D5/30D01D5/34D01F1/10D01F8/06D01F8/10D01F8/12D01F8/14
Inventor 冯学利胡玮张峻绮萧凱仁
Owner IND TECH RES INST