Fiber having phase separation structure and manufacturing method for such fiber

A phase separation, fiber technology, applied in rayon manufacturing, fiber chemical characteristics, conductive/antistatic filament manufacturing, etc., can solve problems such as insufficient antistatic properties, lack of hygroscopicity, and stuffiness The effect of suppressing the occurrence of fuzz, excellent in antistatic properties, and small unevenness in fineness

Active Publication Date: 2016-11-23
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to lack of hygroscopicity, there are disadvantages to be solved such as generation of stuffy feeling at high humidity in summer, generation of static electricity at low humidity in winter, etc.
The current situation is that although antistatic properties can be improved by these methods, sufficient antistatic properties cannot be obtained in low-temperature and low-humidity environments such as outdoors in winter and indoors where the humidity is very low due to the use of heating equipment.

Method used

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  • Fiber having phase separation structure and manufacturing method for such fiber
  • Fiber having phase separation structure and manufacturing method for such fiber
  • Fiber having phase separation structure and manufacturing method for such fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0156]About 100 kg of bis(β-hydroxyethyl) terephthalate was charged into the esterification reaction tank, and after maintaining at a temperature of 250° C., 89.2 kg of high-purity terephthalic acid (manufactured by Mitsui Chemicals) and ethyl alcohol were sequentially supplied over 2.5 hours. A slurry of 39.8 kg of diol (manufactured by Nippon Shokubai). After completion of supply, esterification reaction was performed for 2 hours to obtain an esterification reaction product. Next, 13.6 kg of ethylene glycol (manufactured by Nippon Shokubai) and 16.8 kg of melted polyethylene glycol with a number average molecular weight of 8300 (manufactured by Sanyo Chemical Industry Co., Ltd. PEG6000S) heated to 70° C. were successively charged into the polycondensation tank, and then passed The transfer piping of the esterification reaction tank and the polycondensation tank was connected, and 110.6 kg of the obtained esterification reaction product was transferred to the polycondensation...

Embodiment 2～4

[0160] As shown in Table 1, the copolymerization ratio of the hydrophilic polymer, the discharge amount, and the spinneret (discharge hole diameter, discharge hole length, and number of discharge holes) were changed, and a drawn yarn was produced in the same manner as in Example 1. .

[0161] Table 1 shows the evaluation results of fiber properties and fabric properties of the obtained fibers. As the copolymerization rate of the hydrophilic polymer decreases, fiber properties such as strength and toughness increase, the maximum diameter of the dispersed phase in the fiber cross section and fiber longitudinal section decreases, and U%(hi) becomes good. On the other hand, as the copolymerization ratio of the hydrophilic polymer becomes higher, the antistatic property and hygroscopicity become better.

Embodiment 5～7

[0163] As shown in Table 1, except that the discharge hole diameter of the spinneret was changed, it carried out similarly to Example 4, and produced the drawn yarn.

[0164] Table 1 shows the evaluation results of fiber properties and fabric properties of the obtained fibers. As the discharge aperture becomes smaller, the shear velocity when passing through the spinneret becomes higher, the fiber properties such as strength and toughness increase, and the maximum diameter of the dispersed phase in the fiber cross section and fiber longitudinal section decreases, U%(hi) become good.

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Abstract

The problem addressed by the present invention is to provide a fiber for which, despite having a phase separation structure, unevenness in fineness is small, dyeing unevenness and nap are suppressed, the durability of fiber characteristics with respect to long term storage and tumble drying are excellent, moisture absorption characteristics are excellent, anti-electricity characteristics in low temperature and low humidity environments are excellent, and elution of a hydrophilic compound when dyeing or using the fiber is suppressed. Provided is a fiber having a phase separation structure. The fiber is characterized by the following: comprising a copolymer of a hydrophobic polymer and a hydrophilic polymer; having a continuous phase and a dispersed phase according to a phase separation structure; the dispersed-phase maximum diameter in a fiber transverse cross-section being 1-40nm; and the fineness fluctuation value U%(hi) being 0.1-1.5%.

Description

technical field [0001] The present invention relates to a fiber having a phase-separated structure. More specifically, it relates to a fiber having a phase-separated structure but having small fineness unevenness, uneven dyeing and fuzzing, and having fiber characteristics that are relatively low compared to long-term storage and tumbler drying. Excellent durability, hygroscopicity, and antistatic properties in low-temperature and low-humidity environments, and the dissolution of hydrophilic compounds is suppressed during dyeing and use, making it suitable for clothing. Background technique [0002] Polyester fibers are inexpensive and have excellent mechanical properties, and thus have been used in a wide variety of applications. However, due to lack of hygroscopicity, there are disadvantages to be solved such as generation of stuffy feeling at high humidity in summer, generation of static electricity at low humidity in winter, and the like. The triboelectric electrificat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/86
CPCD01F1/10D01F6/86D01F1/09
Inventor 鹿野秀和中川顺一荒西义高田中阳一郎
Owner TORAY IND INC
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