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Short fiber of polyethylene terephthalate and method for producing same

A technology of polyethylene terephthalate and its production method, which is applied in the field of polyethylene terephthalate short fiber and production, can solve problems such as warming and threats to human survival, and achieve excellent performance and good The effect of breathability and excellent warmth retention

Active Publication Date: 2009-09-09
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Petroleum, as a non-renewable resource, is the most important chemical raw material, but due to the large amount of CO in use engineering and final waste 2 emissions, CO 2 A large amount of emissions has led to a series of problems such as global warming, and directly threatens the survival of human beings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] Main Raw and Auxiliary Materials

[0029] Polyethylene terephthalate (PET) slice 1: biobased.

[0030] Bio-based ethylene glycol: bio-based ethylene glycol - produced by Changchun Dacheng Group, with a purity of 98%; after purchase, it is heated at 190°C for 2 hours and filtered by activated carbon for use. The transmittance is 60% when the light wavelength is 250nm. The transmittance is 90% at 300nm.

[0031] Put a mixed slurry of 5.6 kg of bio-based ethylene glycol and 13 kg of terephthalic acid into a device with a stirring and rectifying tower, gradually raise the temperature to 240-250 °C for esterification, and collect by-product water; When the esterification reaction rate is more than 95%, end the esterification reaction, after adding 0.82 gram of phosphoric acid, add 4.125 gram of antimony trioxide, add 0.9g cobalt acetate, then add 346 gram of 13wt% TiO EG solution, in The polycondensation reaction is carried out in the range of 255-290°C, and when the set p...

Embodiment 1

[0040] Pre-spinning: PET chips 1 go through drum drying--screw extrusion melting--melt filter--spinning--cooling and forming--winding and oiling--falling barrel.

[0041] Among them, the precision of the melt filter is 25 μm, the filter screen is 400 mesh, the filter sand is mixed with 20 mesh and 40 mesh sea sand in a ratio of 1:1, the temperature of the box screw during spinning is 270°C, and the spinning speed is 970m / min , When cooling and forming, the air pressure of the air conditioner is 3000Pa, the air temperature is 23°C±1°C, and the wind speed is 3.2m / S.

[0042] Post-drawing: Bunching--Eight Roller Guide Wire--First Drawing Machine--Drawing Bath--Second Drawing Machine--Steam Heating Box--Third Drawing Machine--Filing Machine--Crimp Machine--cooling conveyor belt--spray oiling--cutting--relaxing heat setting machine--packing--finished fiber.

[0043] Wherein, the first stretching is carried out at 65±2°C, the second stretching and the third stretching are carried o...

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Abstract

The invention discloses short fiber of polyethylene terephthalate and a method for producing the same. A raw material for preparing the polyethylene terephthalate is glycol, wherein a carbon element of the glycol comes from a biological material. The cutting length of the short fiber obtained by adopting a conventional pre-spinning and post-spinning process is between 4 and 10 mm; the titer is between 6.5 and 6.8 dtex; the strength is between 3.0 and 4.0 cN / dtex; and the elongation is between 20 and 40 percent. Compared with the prior short fiber, the preparation of the short fiber of the polyethylene terephthalate utilizes bio-based glycol to replace glycol as a conventional petroleum source, reduces dependence on petroleum, relieves energy crisis, simultaneously improves the utilization of crops and achieves the effects of increment and profit generation.

Description

Technical field: [0001] The invention relates to a short polyethylene terephthalate fiber and a production method thereof. Background technique: [0002] In recent years, with the deterioration of the human living environment, people pay more and more attention to the development of environmentally friendly materials and the use of renewable raw materials. Petroleum, as a non-renewable resource, is the most important chemical raw material, but due to the large amount of CO in use engineering and final waste 2 emissions, CO 2 A large amount of emissions has led to a series of problems such as global warming, and directly threatens the survival of human beings. No new increase in CO in the environment if biological raw materials are used 2 content, to achieve the purpose of reducing the greenhouse effect and protecting the environment, and it can also increase the income of the crop market. Therefore, how to use bio-based raw materials to reduce the use of petroleum is one...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/62D01D5/08D02J1/22D02J13/00
Inventor 吴兴立盛思义李旭本田圭介
Owner TORAY IND INC
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