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A copolyester melt ultra-high-speed direct spinning controllable multi-shrinkage composite fiber and its preparation method

A composite fiber and copolyester technology, which is applied in the field of chemical fiber, can solve the problems of uneven color spots and white spots on the surface of the fabric, poor moisture absorption, breathability and moisture retention, and unstable product quality, and achieve easy dyeing, level dyeing, high color rendering and uniformity Non-toxic, moisture-absorbing, moisturizing, breathable, and cost-effective

Inactive Publication Date: 2015-09-23
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this processing method has complex processing procedures, and its production speed is 3500m / min, which has many shortcomings such as low processing speed, low production efficiency, high production cost, unstable quality, and single product function.
The compound uniformity effect of the multi-different mixed fiber composite fiber product made by this preparation method is relatively poor, resulting in uneven dyeing, poor moisture absorption, breathability and moisture retention, and the surface of the fabric made by it presents uneven stains and white spots, and the product quality is low. unstable

Method used

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  • A copolyester melt ultra-high-speed direct spinning controllable multi-shrinkage composite fiber and its preparation method
  • A copolyester melt ultra-high-speed direct spinning controllable multi-shrinkage composite fiber and its preparation method
  • A copolyester melt ultra-high-speed direct spinning controllable multi-shrinkage composite fiber and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This example provides a five-component copolyester melt of 155dtex / 192f (in which: the specification of fully drawn yarn is 108dtex / 144f, and the specification of pre-oriented yarn is 47dtex / 48f), which can be prepared by ultra-high-speed spinning and stretching. The production process conditions of multi-control multi-shrinkage composite fibers are as follows:

[0025]Put the mass fraction of 70% terephthalic acid (PTA) and mass fraction of 30% ethylene glycol (EG) as the first and second components, and inject the mixed ingredients into the slurry tank to use terephthalic acid and ethylene glycol The total amount is 100%, add catalyst ethylene glycol antimony 0.04%, additives trimethyl phosphate 0.01%, cobalt acetate 0.011%, sodium acetate 0.005%, mix and stir, and pump into the first esterification kettle through the slurry crank pump Carry out the esterification reaction, and then automatically flow into the second esterification tank through the liquid level differ...

Embodiment 2

[0038] This example provides a 138dtex / 108f (including: fully drawn yarn specification 55dtex / 36f, pre-oriented yarn specification 83dtex / 72f) copolyester melt ultra-high-speed direct spinning to prepare a controllable multi-shrinkage composite fiber. The production process is the same as in Example 1. The mixed ingredients of 70% terephthalic acid (PTA) and 30% ethylene glycol (EG) are injected into the slurry tank, and the catalyst ethylene glycol antimony 0.04% and additives are added. Trimethyl phosphate 0.01%, cobalt acetate 0.011%, sodium acetate 0.005%, mixed and stirred, pumped into the first esterification kettle through the slurry crank pump for esterification reaction, and then automatically flowed into the second esterification kettle through the liquid level difference , and at the same time add the ethylene glycol (EG) solution with a mass fraction of 1.0% of the third component polyethylene glycol, a mass fraction of 0.007% of the fourth component of diethylene g...

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Abstract

The invention relates to a controllable multiple-differential-shrinkage composition fiber made from a copolyester melt through ultra-fast direct spinning, and a preparation method of the composition fiber. The copolyester melt, which is made from five components including terephthalic acid, ethylene glycol, poly ethylene glycol, diethylene glycol and pentaerythritol, is pressurized by a booster pump and transported through a melt pipeline into a spinning box body, and is then divided by two measuring pumps into two branches, which enter a spinning component and a spinneret respectively and finally be extruded. After cooling and curing, two yarns are formed, wherein one yarn is subject to oiling by an oil wheel, pre-entwining, stretching and thermoforming to obtain an FDY yarn, and the other yarn is subject to oiling by an oil nozzle, and is guided to two spinning discs to obtain a POY yarn; the two yarns are simultaneously input into a doubling device and a main entwining device for combination, and are formed through the ultra-fast rolling, so as to obtain the composition fiber. The composition fiber has the characteristics of relatively good micro three-dimensional morphological structure, moisture absorption property, moisture preservation property, air permeability and antistatic property, easiness in dyeing, uniform dyeing, high coloration uniformity and the like; the composition fiber is high in processing speed, high in yield, low in consumption, low in manufacturing cost, high in value added, high in product functions, good in quality, and obvious in advantage of performance price ratio.

Description

technical field [0001] The invention relates to a composite fiber with different shrinkage and a preparation method thereof, belonging to the technical field of chemical fibers. Background technique [0002] At present, the polyester different shrinkage composite fibers and their products on the domestic and foreign markets are mainly prepared through the following several technical approaches, such as using polyester fibers with different cross-sectional shapes or different properties, and air-induced shrinkage along the length of the filaments. The processing method of repeated and continuous network combination or joint combination is generally adopted by conventional spinning and drawing (UDY-DY), high-speed spinning (POY) or spinning and drawing one-step (FDY) processing procedures, and then POY and DY (drawn yarn) or FDY carry out composite process route. See attached figure 1 , which is a schematic diagram of the process flow for preparing FDY polyester fibers in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/84C08G63/672D01D5/08D01D5/088D01D5/16D01D10/02
Inventor 管新海高永明赵建平费万春张欢嘉
Owner SUZHOU UNIV
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