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A kind of preparation method of the polyester fine denier yarn of 33dtex/144f

A technology of fine denier yarn and polyester, which is applied in the field of preparation of polyester fine denier yarn, can solve the problems that the intrinsic characteristics of ultra-fine denier fibers are difficult to reflect, the production difficulty is high, and the breakage rate is high, and the added value and competitiveness can be improved. The effect of poor mechanical properties and small fiber diameter

Active Publication Date: 2017-03-01
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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  • A kind of preparation method of the polyester fine denier yarn of 33dtex/144f

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Effect test

Embodiment 1

[0050] See attached figure 1 , Is the process flow chart of the present invention;

[0051] A method for preparing 33dtex / 144f polyester fine denier yarn, the specific steps are:

[0052] 1. Preparation of hydrophilic polyester chips

[0053] (1) Preparation of hydrophilic modifier:

[0054] Using nano-silica powder as raw material, under normal temperature conditions, high-speed stirring and ultrasonic dispersion in N,N-dimethylpyrrolidone solution, the dispersion time is 6-12h, and the high-speed stirring speed is 3000-4000 rpm In a nitrogen atmosphere, add toluene diisocyanate and react for 45-60 minutes at a reaction temperature of 135-155°C. After the reaction is complete, distill under reduced pressure for 45 minutes at 180°C, and then distill the product under reduced pressure. Drying at 120°C for 48h, the hydrophilic modifier is prepared.

[0055] The average particle size of nano-silica powder is 50-65 nanometers, the mass concentration of nano-silica in N,N-dimethylpyrrolid...

Embodiment 2

[0076] A method for preparing 33dtex / 144f polyester fine denier yarn, the specific steps are:

[0077] 1. Preparation of hydrophilic polyester chips

[0078] (1) Preparation of hydrophilic modifier:

[0079] Using nano-silica powder as raw material, under normal temperature conditions, high-speed stirring and ultrasonic dispersion in N,N-dimethylpyrrolidone solution, the dispersion time is 6-12h, and the high-speed stirring speed is 3000-4000 rpm In a nitrogen atmosphere, add toluene diisocyanate and react for 45-60 minutes at a reaction temperature of 135-155°C. After the reaction is complete, distill under reduced pressure for 45 minutes at 180°C, and then distill the product under reduced pressure. Drying at 120°C for 48h, the hydrophilic modifier is prepared.

[0080] 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, and the molar ratio of toluene diisocyanate to nano-silica is 1:8.

[0...

Embodiment 3

[0101] A method for preparing 33dtex / 144f polyester fine denier yarn, the specific steps are:

[0102] 1. Preparation of hydrophilic polyester chips

[0103] (1) Preparation of hydrophilic modifier:

[0104] Using nano-silica powder as raw material, under normal temperature conditions, high-speed stirring and ultrasonic dispersion in N,N-dimethylpyrrolidone solution, the dispersion time is 6-12h, and the high-speed stirring speed is 3000-4000 rpm In a nitrogen atmosphere, add toluene diisocyanate and react for 45-60 minutes at a reaction temperature of 135-155°C. After the reaction is complete, distill under reduced pressure for 45 minutes at 180°C, and then distill the product under reduced pressure. Dry for 48h at 120℃ to prepare hydrophilic modifier;

[0105] 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, and the molar ratio of toluene diisocyanate to nano-silica is 10.

[0106] The si...

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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 method for preparing 33dtex / 144f polyester fine denier yarn. Background technique [0002] Polyester fiber is currently the largest and most widely used apparel fiber, and its output accounts for more than 80% of the global synthetic fiber output. As the largest output polyester fiber, due to its strength, wear resistance, and hydrophobic properties, it has become more and more widely used, but the hydrophobic nature of the polyester fiber itself is limited in its application in fields with high moisture absorption or water absorption requirements. , Which makes polyester fiber have a certain gap with natural fiber in terms of comfort and hand feeling, so that people begin to adjust, change and improve the production process, so that polyester fiber gradually imitates the characteristics of natural fiber, and improves the comfort of polyester fabric. Hand feel, thereby e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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