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A kind of porous supersoft polyester fiber poy yarn and preparation method thereof

A polyester fiber, super soft technology, applied in the field of polyester fiber, can solve the problems of poor mechanical properties, uneven dyeing of polyester fiber, etc., and achieve the effects of improving processing performance, improving dyeing performance, and good cooling effect

Active Publication Date: 2018-09-14
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the problems of uneven dyeing and poor mechanical properties of existing polyester fibers, realize large-scale production and spinning, and provide a porous super soft polyester fiber POY filament and its preparation method

Method used

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  • A kind of porous supersoft polyester fiber poy yarn and preparation method thereof
  • A kind of porous supersoft polyester fiber poy yarn and preparation method thereof
  • A kind of porous supersoft polyester fiber poy yarn and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0061] A preparation method of modified polyester, specifically comprising the following steps:

[0062] (1) Preparation of glycol terephthalate:

[0063] Add terephthalic acid and 2-pentyl-1,6 hexanediol into a slurry with a molar ratio of 1:1.3 and add it to the reactor at a concentration of 50 wt%, and the amount added is 0.3% of the weight of terephthalic acid Under the catalysis of concentrated sulfuric acid, the esterification reaction is carried out. The esterification reaction is pressurized in a nitrogen atmosphere. The pressurized pressure is normal pressure and the temperature is 180°C. 90% is the end point of the esterification reaction to obtain diol terephthalate;

[0064] (2) Preparation of ethylene terephthalate:

[0065] Put terephthalic acid and ethylene glycol into a slurry with a molar ratio of 1:1.2 and put them into the reactor to carry out esterification reaction. The esterification reaction is pressurized in a nitrogen atmosphere. The pressurized pres...

Embodiment 2

[0070] A preparation method of modified polyester, specifically comprising the following steps:

[0071] (1) Preparation of glycol terephthalate:

[0072] Put terephthalic acid and 2-hexyl-1,6-hexanediol in a molar ratio of 1:1.38 into a slurry and add it to the reactor at a concentration of 55 wt%, and the addition amount is 0.32% of the weight of terephthalic acid Under the catalysis of concentrated sulfuric acid, esterification reaction is carried out. The esterification reaction is pressurized in a nitrogen atmosphere. The pressurized pressure is 0.13 MPa and the temperature is 181 °C. % is the end point of the esterification reaction to obtain diol terephthalate;

[0073] (2) Preparation of ethylene terephthalate:

[0074] Put terephthalic acid and ethylene glycol into a slurry with a molar ratio of 1:1.3 and add them into the reactor to carry out esterification reaction. The esterification reaction is pressurized in a nitrogen atmosphere. The pressurized pressure is 0....

Embodiment 3

[0079] A preparation method of modified polyester, specifically comprising the following steps:

[0080] (1) Preparation of glycol terephthalate:

[0081] Put terephthalic acid and 2-heptyl-1,6 hexanediol in a molar ratio of 1:1.33 into a slurry and add it to the reactor at a concentration of 55 wt%, and the amount added is 0.33% of the weight of terephthalic acid Under the catalysis of concentrated sulfuric acid, the esterification reaction is carried out. The esterification reaction is pressurized in a nitrogen atmosphere. The pressurized pressure is 0.12MPa and the temperature is 183°C. 92% is the end point of the esterification reaction to obtain diol terephthalate;

[0082] (2) Preparation of ethylene terephthalate:

[0083] Put terephthalic acid and ethylene glycol into a slurry with a molar ratio of 1:1.31 and put them into the reactor to carry out esterification reaction. The esterification reaction is pressurized in a nitrogen atmosphere. The pressurized pressure is...

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Abstract

The invention relates to a porous super-soft polyester fiber POY silk and a preparing method thereof. The preparing method includes the steps that modified polyester is spun through a porous spinneret plate to prepare the porous super-soft polyester fiber POY silk; the spinneret holes in the porous spinneret plate are formed in an oval mode, in other words, the hole centers of the spinneret holes are located on concentric ellipses; the concentric ellipses are series of ellipses, long shafts of all the ellipses are collinear, and short shafts of all the ellipses are collinear. The porous super-soft polyester fiber POY silk is prepared in the mode that the modified polyester is subjected to particle cutting to obtain modified polyester slices, and the modified polyester slices are metered, extruded, cooled, subjected to oil applying and wound; a preparing method of the modified polyester includes the steps that terephthalic acid and ethylene glycol are reacted to prepare terephthalate, terephthalic acid is added and reacted with ethylene glycol containing branch chains to prepare terephthalic acid glycol ester, the mixture continues to react, and the modified polyester is obtained. The fiber prepared with the method is excellent in performance, the deviation rate of the linear density is smaller than or equal to 0.2%, the breaking strength CV value is smaller than or equal to 2.5%, and the breaking extension rate CV value is smaller than or equal to 5.0%.

Description

technical field [0001] The invention belongs to the field of polyester fibers, and relates to a porous supersoft polyester fiber POY filament and a preparation method thereof. Background technique [0002] Since its inception, polyethylene terephthalate (PET fiber or polyester fiber) fiber has high breaking strength and elastic modulus, moderate resilience, excellent heat setting, good heat resistance and light resistance, acid resistance, alkali resistance and corrosion resistance. It has a series of excellent performances, such as anti-wrinkle and non-ironing, and good crispness. It is widely used in clothing, home textiles and other fields. [0003] However, due to the high crystallinity and compact structure of PET, and there is no functional group combined with the dye on the molecular chain, it is difficult for the dye molecule to enter the fiber and dyeing is difficult. Can't satisfy people to bright-coloured beautiful, the fabric demand of unique style. [0004] Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/10C08G63/183D01D5/08D01D5/088D01D5/253
CPCC08G63/183D01D5/08D01D5/088D01D5/253D01F1/10D01F6/92
Inventor 范红卫汤方明王力军孙晓华温浩熊克
Owner JIANGSU HENGLI CHEM FIBER