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Preparation method of 33 dtex/144f fine denier polyester fiber

A fine-denier yarn and polyester technology, which is applied in the field of polyester fine-denier yarn preparation, can solve the problems of difficult to reflect the intrinsic characteristics of ultra-fine denier fibers, high production difficulty, and low linear density, so as to improve added value and competitiveness, Customer service poor mechanical properties, the effect of small fiber diameter

Active Publication Date: 2016-08-31
福建百宏聚纤科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its low linear density, there are many filaments and high breakage rate during processing, making production difficult. At the same time, after the hydrophobic characteristics of the fine denier fiber itself, if it is not modified by hydrophilicity, the superfine denier fiber It is also difficult to reflect the intrinsic characteristics of polyester fibers, so the development of hydrophilic ultra-fine polyester fibers plays an important role in improving product quality and increasing the differentiation rate of domestic fibers.

Method used

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  • Preparation method of 33 dtex/144f fine denier polyester fiber

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Experimental program
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Effect test

Embodiment 1

[0050] Please see attached figure 1 , is a process flow diagram of the present invention;

[0051] A kind of preparation method of the polyester fine denier silk of 33dtex / 144f, its concrete steps are:

[0052] 1. Preparation of hydrophilic polyester chips

[0053] (1) Preparation of hydrophilic modifier:

[0054] Using nano-silica powder as raw material, high-speed stirring and ultrasonic dispersion are carried out in N, N-dimethylpyrrolidone solution under normal temperature conditions. The dispersion time is 6-12 hours, and the high-speed stirring speed is 3000-4000 rpm , and then in a nitrogen atmosphere, add toluene diisocyanate, and react at a reaction temperature of 135 to 155°C for 45 to 60 minutes. Dry at 120° C. for 48 hours to prepare a hydrophilic modifier.

[0055] Among them, the average particle size of nano-silica powder is 50-65 nanometers, the mass concentration of nano-silica in N,N-dimethylpyrrolidone is 25g / L, toluene diisocyanate toluene diisocyanate ...

Embodiment 2

[0076] A kind of preparation method of the polyester fine denier silk of 33dtex / 144f, its concrete steps are:

[0077] 1. Preparation of hydrophilic polyester chips

[0078] (1) Preparation of hydrophilic modifier:

[0079] Using nano-silica powder as raw material, high-speed stirring and ultrasonic dispersion are carried out in N, N-dimethylpyrrolidone solution under normal temperature conditions. The dispersion time is 6-12 hours, and the high-speed stirring speed is 3000-4000 rpm , and then in a nitrogen atmosphere, add toluene diisocyanate, and react at a reaction temperature of 135 to 155°C for 45 to 60 minutes. Dry at 120° C. for 48 hours to prepare a hydrophilic modifier.

[0080] Among them, the average particle size of nano-silica powder is 50-65 nanometers, the mass concentration of nano-silica in N, N-dimethylpyrrolidone is 30g / L, toluene diisocyanate toluene diisocyanate and nano-silica The molar ratio is 1:8.

[0081] The surface of silica has an excellent hyd...

Embodiment 3

[0101] A kind of preparation method of the polyester fine denier silk of 33dtex / 144f, its concrete steps are:

[0102] 1. Preparation of hydrophilic polyester chips

[0103] (1) Preparation of hydrophilic modifier:

[0104] Using nano-silica powder as raw material, high-speed stirring and ultrasonic dispersion are carried out in N, N-dimethylpyrrolidone solution under normal temperature conditions. The dispersion time is 6-12 hours, and the high-speed stirring speed is 3000-4000 rpm , and then in a nitrogen atmosphere, add toluene diisocyanate, and react at a reaction temperature of 135 to 155°C for 45 to 60 minutes. Dry at 120°C for 48 hours to prepare a hydrophilic modifier;

[0105] Among them, the average particle size of nano-silica powder is 50-65 nanometers, the mass concentration of nano-silica in N,N-dimethylpyrrolidone is 38g / L, toluene diisocyanate toluene diisocyanate and nano-silica The molar ratio is 10.

[0106]The surface of silica has an excellent hydroxyl...

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Abstract

The invention relates to a preparation method of 33 dtex / 144f fine denier polyester fiber. Conventional polyester melt serves as main melt, hydrophilic polyester melt and the main melt are mixed through a front-of-pump injecting system and then subjected to before-spinning filtering, enter a spinning assembly to be subjected to melting and spinning, and are subjected to annular air blowing cooling, oiling, stretching and rolling to obtain superfine denier POY fiber; superfine denier POY fiber serves as the raw material, the superfine denier POY fiber on a DTY elasticizer passes through a pretangle jet, a first roller, a deformation hot box, a cooling plate, a false twister, a second roller, a main network nozzle, an auxiliary second roller, a sizing hot box, a third roller and an oiling wheel to be subjected to rolling and forming to prepare fine denier polyester filaments. Due to the excellent filament number, the small fiber diameter and the large surface specific area of the fine denier polyester filament, the fiber has the advantages that the fiber has excellent softness and hand feeling of natural fiber and overcomes the defect that natural fiber is poor in mechanical performance and poor in wear resistance, and the additional value and competitiveness of a product are improved.

Description

technical field [0001] The invention relates to the technical field of textile production, in particular to a preparation method of 33dtex / 144f polyester fine denier yarn. Background technique [0002] Polyester fiber is currently the largest and most widely used clothing fiber, and its output accounts for more than 80% of the global synthetic fiber output. As the polyester fiber with the largest output, it is widely used due to its strength, wear resistance and hydrophobic properties, but the hydrophobic property of polyester fiber itself limits its application in fields with high hygroscopicity or water absorption requirements. , so that there is a certain gap between polyester fiber and natural fiber in terms of comfort and hand feeling, so that people start to continuously adjust, change and improve the production process, so that polyester fiber gradually imitates the characteristics of natural fiber, and improves the comfort and comfort of polyester fabric. Feel, ther...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10D01D5/092D01D5/12D02G1/02C08G63/183C08G18/48
CPCC08G18/4833C08G63/183D01D5/092D01D5/12D01F1/10D01F6/92D02G1/0206
Inventor 谌建国鲁传旺陈文阳刘智敏
Owner 福建百宏聚纤科技实业有限公司
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