Preparation method and application of modified polyester stretch yarn with special-shaped section

A special-shaped cross-section, modified polyester technology, applied in the field of spinning, can solve the problems of low end breakage rate, polyester fiber can not meet the moisture absorption and perspiration performance, etc., achieve low end breakage rate, good moisture absorption and perspiration effect, machine Use efficient effects

Active Publication Date: 2015-05-13
ZHEJIANG HENGYI HIGH TECH MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that polyester fiber cannot satisfy good moisture absorption and perspiration performance, the present invention proposes a preparation method of modified polyester elastic yarn with special-shaped cross-section. The production speed of the product is improved, the processing cost is reduced, and it can be applied to the development of various high-grade fabrics

Method used

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  • Preparation method and application of modified polyester stretch yarn with special-shaped section

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Experimental program
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Effect test

Embodiment 1

[0034] (1) Preparation of alkali-soluble masterbatch: 16.9kg (100mol) of purified terephthalic acid (PTA), 7.13kg (115mol) of ethylene glycol (EG), 240g (2% of the molar content of ethylene glycol) 5.87g of isoprene glycol and polymerization catalyst antimony trioxide were mixed together and added to the reaction system, and esterified at 250-260°C under normal pressure. After esterification finishes, add 8mol isophthalic acid-5-sodium sulfonate, after stirring, add 2kg average molecular weight and be the polyethylene glycol (PEG) of 6000 and 1.92g antioxidant 1010, mix at the low temperature of 0.1kpa Vacuum, after pre-condensation at 270°C for 120 minutes, the temperature of the reaction system was maintained at 270°C, and the vacuum degree was 50pa for final polycondensation to obtain 22Kg of alkali-soluble masterbatches (theoretical value is 19.2kg, which is based on the fact that the polymerization product is only PET calculation). The prepared alkali-soluble masterbatch...

Embodiment 2

[0041] (1) Preparation of alkali-soluble masterbatch: 16.9kg (100mol) of purified terephthalic acid (PTA), 7.13kg (115mol) of ethylene glycol (EG), 480g (4% of the molar content of ethylene glycol) 5.76 g of isopentyl glycol and polymerization catalyst antimony trioxide were mixed together and added to the reaction system, and esterified at 250-260° C. under normal pressure. Add 8mol of isophthalic acid-5-sodium sulfonate after the esterification is finished, after stirring evenly, add 2kg of polyethylene glycol (PEG) with an average molecular weight of 8000 and add 5.70g of antioxidant 1076, mix it in a low vacuum 0.1 kpa, after pre-condensation at 260°C for 90 minutes, heat the temperature of the reaction system to 270°C, and carry out final polycondensation at a vacuum of 50pa or below to obtain an alkali-soluble masterbatch of 22.3Kg (theoretical value is 19.2kg, which is based on the polymerization Products calculated for PET only). The prepared alkali-soluble masterbatc...

Embodiment 3

[0048] (1) Preparation of alkali-soluble masterbatch: 16.9kg (100mol) of purified terephthalic acid (PTA), 7.13kg (115mol) of ethylene glycol (EG), 240g (2% of the molar content of ethylene glycol) 5.76 g of isopentyl glycol and polymerization catalyst antimony trioxide were mixed together and added to the reaction system, and esterified at 250-260° C. under normal pressure. Add 8mol of isophthalic acid-5-sodium sulfonate after the esterification is finished, stir evenly, add 2kg of polyethylene glycol (PEG) with an average molecular weight of 1000 and add 4.6g of phosphite and 5g of antioxidant 1076, mix well After pre-condensation at a low vacuum of 0.1kpa and a temperature of 280°C for 120 minutes, the temperature of the reaction system was lowered to 270°C, and the final polycondensation was carried out at a vacuum degree of 50pa or below to obtain an alkali-soluble masterbatch of 21.8Kg (theoretical value is 19.2kg, This theoretical value is calculated based on the fact t...

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Abstract

The invention relates to the technical field of spinning and provides a preparation method of a modified polyester stretch yarn with a special-shaped section so as to solve the problem that polyester fiber cannot meet the requirements on excellent moisture absorption and sweat releasing properties. The preparation method comprises the following steps of: preparing alkali-soluble master batches; mixing the alkali-soluble master batches, barium sulfate subjected to surface treatment by a modifier and a dispersing agent at high speed, and pelleting the mixture by using a double-screw extruder to prepare barium sulfate-alkali-soluble master batches; and performing blended spinning on the barium sulfate-alkali-soluble master batches and polyethylene glycol terephthalate to obtain the modified polyester stretch yarn with the special-shape section. In a production process, the using efficiency of a machine platform is high and the end breakage rate is low, so the production speed of the modified polyester stretch yarn is increased, the processing cost is reduced, and the modified polyester stretch yarn can be applied to development of various high-grade fabrics.

Description

technical field [0001] The invention relates to the technical field of spinning, in particular to a preparation method and application of a modified polyester elastic yarn with special-shaped cross-section Background technique [0002] Polyester has the advantages of high strength, good wear resistance, smooth surface, heat setting, stable physical and chemical properties, etc., and is widely used in the field of clothing; but the hydrophobicity of polyester restricts its application in fields that require moisture absorption and perspiration, so Endowing polyester fiber with good moisture absorption and perspiration performance is the goal of many researchers. [0003] At present, there are many methods on how to improve the moisture absorption and perspiration performance of polyester fibers in the market. The Chinese patent application number 200610117036.3 discloses a moisture absorption and perspiration polyester fiber, and the Chinese patent application number 20051004...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/10D01F8/14D01D5/253D01D5/30C08G63/688D06M11/38D06M101/32
Inventor 康娟缪国华
Owner ZHEJIANG HENGYI HIGH TECH MATERIAL
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