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Porous PTT (polytrimethylene terephthalate)-fiber HOY (high oriented yarn) and preparation method thereof

A fiber and spinneret technology, applied in the field of PTT fiber, can solve the problems of uneven dyeing and poor mechanical properties of PTT fiber

Active Publication Date: 2017-01-04
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the problems of uneven dyeing and poor mechanical properties of existing PTT fibers, realize large-scale production and spinning, and provide a porous PTT fiber HOY filament and its preparation method

Method used

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  • Porous PTT (polytrimethylene terephthalate)-fiber HOY (high oriented yarn) and preparation method thereof
  • Porous PTT (polytrimethylene terephthalate)-fiber HOY (high oriented yarn) and preparation method thereof
  • Porous PTT (polytrimethylene terephthalate)-fiber HOY (high oriented yarn) and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0062] A preparation method of modified PTT polyester, specifically comprising the following steps:

[0063] (1) Preparation of glycol terephthalate:

[0064] Put terephthalic acid and 2-pentyl-1,3 propanediol with a molar ratio of 1:1.3 into a slurry and add it to the reactor at a concentration of 50 wt%, and the addition amount is 0.3% of the weight of terephthalic acid. Under the catalysis of sulfuric acid, 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. Time is the end point of the esterification reaction to obtain diol terephthalate;

[0065] (2) Preparation of 1,3-propylene glycol terephthalate:

[0066] After making terephthalic acid and 1,3-propanediol into a slurry, carry out esterification reaction. The esterification reaction is pressurized in a nitrogen atmosphere, the pressure is controlled at normal pressure, and the temperature...

Embodiment 2

[0071] A preparation method of modified PTT polyester, specifically comprising the following steps:

[0072] (1) Preparation of glycol terephthalate:

[0073]Put terephthalic acid and 2-hexyl-1,3 propanediol with a molar ratio of 1:1.38 into a slurry and add to the reactor, at a concentration of 55wt%, add concentrated sulfuric acid in an amount of 0.32% of the weight of terephthalic acid Under the catalysis of the catalyst, the 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. For the end point of the esterification reaction, obtain diol terephthalate;

[0074] (2) Preparation of 1,3-propylene glycol terephthalate:

[0075] After making terephthalic acid and 1,3-propanediol into a slurry, carry out esterification reaction. The esterification reaction is pressurized in a nitrogen atmosphere, the pressure is controlled at normal pressure, and the temp...

Embodiment 3

[0080] A preparation method of modified PTT polyester, specifically comprising the following steps:

[0081] (1) Preparation of glycol terephthalate:

[0082] Put terephthalic acid with a molar ratio of 1:1.33 and 2-heptyl-1,3 propanediol into a slurry and add it to the reactor. Under the catalysis of sulfuric acid, esterification reaction is carried out. The esterification reaction is pressurized in a nitrogen atmosphere. The pressurized pressure is 0.12 MPa and the temperature is 183 ° C. When the amount of water distilled in the esterification reaction reaches 92% of the theoretical value Time is the end point of the esterification reaction to obtain diol terephthalate;

[0083] (2) Preparation of 1,3-propylene glycol terephthalate:

[0084] After making terephthalic acid and 1,3-propanediol into a slurry, carry out esterification reaction. The esterification reaction is pressurized in a nitrogen atmosphere, the pressure is controlled at normal pressure, and the temperatu...

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Abstract

The invention relates to porous PTT (polytrimethylene terephthalate)-fiber HOY (high oriented yarn) and a preparation method thereof. According to the preparation method, the porous PTT-fiber HOY is prepared from modified PTT by spinning with a porous spinneret; spinneret orifices in the porous spinneret are arranged in an oval shape, that is, the centers of the spinneret orifices are located on concentric ellipses adopting series ellipses, major axes of all the ellipses are collinear, and minor axes of all the ellipses are collinear. The porous PTT-fiber HOY is prepared from modified PTT through measurement, extrusion, cooling, oiling and winding. A preparation method of modified PTT comprises the steps as follows: terephthalic acid and 1,3-propanediol react, trimethylene terephthalate is prepared, diol terephthalate prepared from terephthalic acid and branched-chain-containing diol through a reaction is added, reaction is continued, and modified PTT is obtained. The prepared HOY has excellent fiber performance, the deviation rate of linear density is lower than or equal to 0.2%, the breaking strength CV value is lower than or equal to 2.5%, and the breaking elongation CV value is lower than or equal to 5.0%.

Description

technical field [0001] The invention belongs to the field of PTT fibers, and relates to a porous PTT fiber HOY filament and a preparation method thereof. Background technique [0002] Polypropylene terephthalate (PTT fiber) fiber has high breaking strength and elastic modulus, moderate resilience, excellent heat setting, good heat and light resistance, acid resistance, alkali resistance and corrosion resistance since its inception. A series of excellent properties, and the fabric has the advantages of anti-wrinkle, non-ironing, good crispness, etc., and is widely used in clothing, home textiles and other fields. [0003] PTT has better elasticity, dimensional stability and dyeability. At the same time, it has many excellent properties such as anti-ultraviolet, anti-internal stress, low water absorption, low static electricity, good biodegradability, and recyclability, so it is widely used in carpet industry, clothing materials, engineering plastics and other fields. With t...

Claims

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Application Information

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IPC IPC(8): D01F6/84C08G63/183C08G63/78D01D4/02D01D5/08D01D5/092
CPCC08G63/183C08G63/78D01D4/02D01D5/08D01D5/092D01F6/84
Inventor 范红卫沈建根王丽丽王锋宾杨超明孙晓华
Owner JIANGSU HENGLI CHEM FIBER
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