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Elastic composite fiber and preparation method thereof

A technology of elastic composite fiber and composite structure, applied in fiber processing, fiber chemical characteristics, rayon manufacturing, etc., can solve the problems of unpublished fiber quick-drying performance, poor moisture conductivity, unpublished fiber water absorption and quick-drying test data, etc. Achieve excellent water absorption and quick-drying performance, good moisture-wicking and quick-drying performance, and excellent spinnability

Pending Publication Date: 2020-05-29
厦门翔鹭化纤股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN104831417A discloses a polyester elastomer / PET composite elastic fiber and a preparation method thereof. The curl degree of the fiber prepared by the method is 60-75%, the crimp elasticity rate is 97-99%, and the water absorption height of the fabric is 9.7-14.1cm / 30min, the composite fiber prepared by the one-step method of spinning, stretching and winding in this technical scheme has poor bulkiness, limited application range, and does not disclose the quick-drying performance of the fiber. Obviously, if it only has excellent water absorption similar to cotton and The moisture conductivity is too poor, and people will feel cold and wet when they sweat a lot during activities
The fibers prepared by the technical scheme disclosed in CN104726947A have poor elasticity and elastic recovery, and the water absorption and quick-drying test data of the fibers are not disclosed
Therefore, there is no disclosure about the preparation method of elastic composite fibers with excellent water absorption and quick-drying functions so far.

Method used

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  • Elastic composite fiber and preparation method thereof
  • Elastic composite fiber and preparation method thereof
  • Elastic composite fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of water-absorbing modified PET slices: Calculate the mass of theoretically produced water-absorbing modified PET, weigh terephthalic acid, ethylene glycol and isosorbide with an acid-alcohol molar ratio of 1:1.35 and add them to the reaction kettle for esterification reaction, the addition of isosorbide is 0.5%, the esterification temperature is 252°C, the esterification pressure is a slight positive pressure of 0.02MPa, and the esterification rate reaches more than 98%. Alcohol, 0.1% modified accelerator, 100ppm trimethyl phosphate, 1500ppm antioxidant 1425 and 0.3% matting agent titanium dioxide, after equilibrating for 30min, add 40ppm catalyst titanium glycolate, heat up to 278°C, and vacuumize at the same time to make the vacuum degree at Below 80Pa, let the esterified product undergo polycondensation reaction under vacuum conditions, stop the reaction after the stirring current and the online viscometer value reach the preset value, extrude and cut...

Embodiment 2

[0037] (1) Preparation of water-absorbing modified PET slices: Calculate the mass of theoretically produced water-absorbing modified PET, weigh terephthalic acid, ethylene glycol and isosorbide with an acid-alcohol molar ratio of 1:1.2 and add them to the reaction kettle for esterification reaction, the addition of isosorbide is 0.3%, the esterification temperature is 248°C, the esterification pressure is a slight positive pressure of 0.02MPa, and the esterification rate reaches more than 98%. Alcohol, 0.1% modified accelerator, 150ppm trimethyl phosphate, 2500ppm antioxidant 1425 and 0.3% matting agent titanium dioxide, after equilibrating for 30 minutes, add 30ppm catalyst titanium glycolate, heat up to 276 ° C, and vacuumize at the same time to make the vacuum degree Below 80Pa, let the esterified product undergo polycondensation reaction under vacuum conditions, stop the reaction after the stirring current and the online viscometer value reach the preset value, extrude and ...

Embodiment 3

[0040] (1) Preparation of water-absorbing modified PET slices: Calculate the mass of theoretically produced water-absorbing modified PET, weigh terephthalic acid, ethylene glycol and isosorbide with an acid-alcohol molar ratio of 1:1.2 and add them to the reaction kettle for esterification reaction, the amount of isosorbide added is 0.1%, the esterification temperature is 250°C, the esterification pressure is a slight positive pressure of 0.02MPa, and the esterification rate reaches more than 98%. Alcohol, 0.8% modified accelerator, 150ppm trimethyl phosphate, 2800ppm antioxidant 1425 and 0.3% matting agent titanium dioxide, after equilibrating for 10min, add 50ppm catalyst titanium glycolate, heat up to 278°C, and vacuumize at the same time to make the vacuum degree at Below 80Pa, let the esterified product undergo polycondensation reaction under vacuum conditions, stop the reaction after the stirring current and the online viscometer value reach the preset value, extrude and ...

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Abstract

The invention discloses an elastic composite fiber. The elastic composite fiber has a parallel composite structure in the cross section, which is compounded after separately extruding water-absorbingmodified PET and PTT at a mass ratio of 48 to 52 to 52 to 48. The elastic composite fiber disclosed by the invention has an excellent water absorption and quick drying performance and a soft touch; the groove formed between the two components along the fiber elongation direction makes the parallel composite fiber have good moisture conductivity and quick drying performance; the breaking strength is greater than or equal to 2.8cN / dtex, and the elongation at break is 24% to 30%; the composite elastic fiber has a high degree of curling and fluffiness similar to wool, which is suitable for the application of close-fitting clothing, and expands the use of the elastic composite fiber; and the shrinkage rate is 40% to 45%. The elastic elongation of the fabric is greater than or equal to 25%, theelastic recovery rate is greater than or equal to 98%, the water absorption is that the dripping diffusion time is less than 1s, the diffusive residual moisture rate is 10%, and the required time is less than or equal to 50min.

Description

technical field [0001] The invention belongs to the technical field of elastic fiber and its processing, and in particular relates to an elastic composite fiber and a preparation method thereof. Background technique [0002] With the advancement of science and technology and the improvement of people's living standards, people have higher and higher requirements for the comfort and functionality of clothing. On the one hand, elastic fibers have attracted widespread attention due to their excellent elasticity and elastic recovery. Polyester elastic fibers include polyester single-component and two-component composite elastic fibers. Compared with polyurethane elastic fibers, they have excellent dyeing performance, high temperature resistance and corrosion resistance, so they have a wide range of applications. In recent years came to develop rapidly. On the other hand, elastic fibers are developing in the direction of functionalization such as antibacterial, antistatic, moist...

Claims

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Application Information

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IPC IPC(8): D01F8/14D01F1/10D01D5/32D02G1/02
CPCD01F8/14D01F1/10D01D5/32D02G1/02
Inventor 田艳艳刘龙敏刘志麟吴铁城郑铮蔡禄生兰为佳蔡泽欣袁秋玉
Owner 厦门翔鹭化纤股份有限公司
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