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Polyester industrial yarn for military luggage and its preparation method

A technology of polyester industrial yarn and luggage, applied in the field of polyester fiber, can solve the problems of fabric strength, friction resistance and dyeing performance that cannot meet the requirements, and achieve the effect of shortening dyeing time, reducing energy consumption, and improving diffusion rate.

Active Publication Date: 2020-10-13
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the 1990s in my country, although great progress has been made in the functional finishing of military luggage fabrics, polyester staple fibers and ordinary polyester filaments are still the main materials used. Key indicators such as performance still cannot meet the requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Polyester industrial yarn for military luggage and its preparation method
  • Polyester industrial yarn for military luggage and its preparation method
  • Polyester industrial yarn for military luggage and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The preparation method of the polyester industrial yarn that is used for military luggage, the steps are as follows:

[0054] (1) prepare modified polyester;

[0055] (1.1) The synthesis steps of 2,5,6,6-tetramethyl-2,5-heptanediol are as follows:

[0056] (a) Mix KOH powder, 3-methyl-3-hydroxybutyne, 3,3-dimethyl-2-butanone and isopropyl ether at a molar ratio of 1:1:1.2:2.0, and place in an ice bath Under the conditions of reaction for 2h, cooling crystallization, centrifugation, washing, refining and drying are carried out after the reaction to obtain octyne diol;

[0057] (b) Mix octynediol, ethanol and palladium catalyst in a weight ratio of 2:10:0.01, react at a temperature of 40°C for 50 minutes, continuously feed hydrogen during the reaction, and separate and purify after the reaction to obtain 2,5,6,6-tetramethyl-2,5-heptanediol, the structural formula of 2,5,6,6-tetramethyl-2,5-heptanediol is shown in formula (I);

[0058] (1.2) Esterification reaction;

...

Embodiment 2

[0077] The preparation method of the polyester industrial yarn that is used for military luggage, the steps are as follows:

[0078] (1) prepare modified polyester;

[0079] (1.1) The synthesis steps of 2,5,6,6-tetramethyl-2,5-heptanediol are as follows:

[0080] (a) Mix KOH powder, 3-methyl-3-hydroxybutyne, 3,3-dimethyl-2-butanone and isopropyl ether at a molar ratio of 1.1:1:1.2:2.3, and place in an ice bath Under the conditions of reaction for 2h, cooling crystallization, centrifugation, washing, refining and drying are carried out after the reaction to obtain octyne diol;

[0081] (b) Mix octynediol, ethanol and palladium catalyst in a weight ratio of 2:10:0.01, react at a temperature of 45°C for 50 minutes, continuously feed hydrogen during the reaction, and separate and purify after the reaction to obtain 2,5,6,6-tetramethyl-2,5-heptanediol, the structural formula of 2,5,6,6-tetramethyl-2,5-heptanediol is shown in formula (I);

[0082] (1.2) Esterification reaction; ...

Embodiment 3

[0096] The preparation method of the polyester industrial yarn that is used for military luggage, the steps are as follows:

[0097] (1) prepare modified polyester;

[0098] (1.1) The synthesis steps of 2,5,6,6-tetramethyl-2,5-heptanediol are as follows:

[0099] (a) Mix KOH powder, 3-methyl-3-hydroxybutyne, 3,3-dimethyl-2-butanone and isopropyl ether at a molar ratio of 1.2:1:1.25:2.0, and place in an ice bath Under the conditions of reaction for 3 hours, after the reaction is completed, cooling and crystallization, centrifugation, washing, refining and drying are carried out to obtain octyne diol;

[0100] (b) Mix octynediol, ethanol and palladium catalyst in a weight ratio of 3:10:0.03, react at 40°C for 50 minutes, continuously feed hydrogen during the reaction, and separate and purify after the reaction to obtain 2,5,6,6-tetramethyl-2,5-heptanediol, the structural formula of 2,5,6,6-tetramethyl-2,5-heptanediol is shown in formula (I);

[0101] (1.2) Esterification reac...

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Abstract

The invention relates to a polyester industrial filament for military bags and suitcases and a preparing method of the polyester industrial filament. The method includes the step of conducting solid-phase condensation polymerization and tackifying, melting, metering, extruding, cooling, oiling, stretching, heat setting and winding on modified polyester melt to prepare the polyester industrial filament for military bags and suitcases. A preparing method of polyester modified before solid-phase condensation polymerization and tackifying includes the steps of evenly mixing terephthalic acid, ethylene glycol, dihydric alcohol with silicone in the main chain and 2,5,6,6-tetramethyl-2,5-heptandiol, and sequentially conducting esterification reaction and condensation polymerization reaction. Theprepared product is made of the modified polyester, and a molecular chain of the modified polyester comprises a terephthalic acid chain segment, an ethylene glycol chain segment, a dihydric alcohol chain segment with silicone in the main chain and a 2,5,6,6-tetramethyl-2,5-heptandiol chain segment. The preparing method is simple, cost is low, the dye-uptake of the fiber is improved, the dyeing performance is improved, the friction resistance of the military bags and suitcases is remarkably improved, and the prepared product is excellent in dyeing performance and high in friction resistance.

Description

technical field [0001] The invention belongs to the technical field of polyester fibers and relates to a polyester industrial yarn, in particular to a polyester industrial yarn used for military bags and a preparation method thereof. Background technique [0002] Since its appearance, polyethylene terephthalate (PET) fiber has developed rapidly because of its excellent performance, and its output has become the crown of synthetic fibers in the world. Polyester fiber has a series of excellent properties such as high breaking strength and elastic modulus, moderate resilience, excellent heat setting, good heat resistance and light resistance, acid resistance, alkali resistance and corrosion resistance, and the fabric has the advantages of wrinkle resistance and good stiffness. Therefore, polyester fiber is widely used in clothing, industrial yarn and other fields. [0003] Military luggage is an indispensable equipment for soldiers. When soldiers perform combat, patrol or tra...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92C08G63/695
Inventor 陈瑞赵艳丽杨超明
Owner JIANGSU HENGLI CHEM FIBER