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A kind of polyester low elastic yarn and preparation method thereof

A technology of polyester low elastic yarn and raw yarn is applied in the field of polyester fiber, which can solve the problems of discomfort, poor hygroscopicity and stuffiness, and achieve the effect of promoting full reaction, improving performance and inhibiting degradation.

Active Publication Date: 2022-06-17
杭州鑫典实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Polyester low elastic yarn is also called polyester low elastic yarn. It is a type of textured yarn of polyester chemical fiber. It is made of polyester chip as raw material, high-speed spinning polyester pre-oriented yarn as raw yarn, and then processed by drafting and false twisting. In addition to the characteristics of general polyester such as high breaking strength and elastic modulus, excellent heat setting, good rebound performance, heat resistance, light resistance, strong corrosion resistance, easy washing and quick drying, it also has good bulkiness, Good heat insulation, comfortable hand feeling, soft luster, etc., but the clothes made of polyester low elastic yarn still have poor hygroscopicity like ordinary polyester, and there is a feeling of stuffiness when wearing, which is easy to bring discomfort to people.
[0004] In view of the above-mentioned related technologies, the inventor believes that the use of polyester low elastic yarn to weave clothes has poor hygroscopicity and is easy to bring discomfort to people, which needs to be further improved

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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  • A kind of polyester low elastic yarn and preparation method thereof
  • A kind of polyester low elastic yarn and preparation method thereof
  • A kind of polyester low elastic yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A preparation method of polyester low elastic yarn, comprising the following steps:

[0052] Step 1) Preparation of modified polyester chips:

[0053] Step 1-1) add the terephthalic acid of 10kg, the ethylene glycol of 10kg, the 1,2-pentanediol of 5kg, the catalyzer of 1kg in the first reactor, stirring speed is 500r / min, stirs 10min, is heated to 260°C, react for 5h to obtain a mixture;

[0054] Step 1-2) in the second reaction kettle, add 1kg of N-methylol acrylamide, 0.8kg of 3-aminopropanesulfonic acid, 0.8kg of glutaric acid and mix, heat to 80 ° C, and keep the temperature for 2h to obtain modifier;

[0055] Step 1-3) The mixture of 15kg and the modifier of 6kg were added to the polycondensation reaction kettle, mixed, heated to 260°C, polycondensation was carried out under the condition of pressure 1400Pa, discharged, solidified at 280°C for 10min, pelletized , to obtain modified polyester chips;

[0056] Step 2) Preparation of pre-oriented filament yarn:

...

Embodiment 2

[0065] Compared with Example 1, the only difference is:

[0066] In step 1-1), the addition of terephthalic acid is 15kg, the addition of ethylene glycol is 18kg, the addition of 1,2-pentanediol is 10kg, and the addition of catalyst is 2.5kg, heated to 280 ℃, the reaction is 3h;

[0067] In step 1-2), the addition of N-methylol acrylamide is 1.5kg, the addition of 3-aminopropanesulfonic acid is 1.2kg, the addition of glutaric acid is 1.5kg, heated to 120 ° C, Keep warm for 1h;

[0068] In step 1-3), the addition of the mixture is 25kg, and the addition of the modifier is 12kg, heated to 270 ° C;

[0069] In step 2), heating to 130°C, crystallization time is 2h, continuing to heat to 150°C, and drying for 3h;

[0070] In step 3), the control temperature of the first hot box is 95°C, and the control temperature of the second hot box is 70°C;

[0071] In step 4-1), the amount of antistatic treatment agent added is 5kg, the amount of water added is 100kg, heated to 65°C, and k...

Embodiment 3

[0074] Compared with Example 1, the only difference is:

[0075] In step 1-1), the addition of terephthalic acid is 12kg, the addition of ethylene glycol is 14kg, the addition of 1,2-pentanediol is 7kg, the addition of catalyst is 2kg, heated to 270 ° C , the reaction is 4h;

[0076] In step 1-2), the addition of N-methylol acrylamide is 1.2kg, the addition of 3-aminopropanesulfonic acid is 1kg, and the addition of glutaric acid is 1.1kg, heated to 100 ° C, insulation 1.5h;

[0077] In step 1-3), the addition of mixture is 25kg, and the addition of modifier is 12kg;

[0078] In step 4-1), the addition amount of antistatic treatment agent is 3kg, the addition amount of water is 60kg, heated to 62°C, and kept for 22min.

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Abstract

The application relates to the technical field of polyester fiber, and specifically discloses a polyester low elastic yarn and a preparation method thereof. The preparation method of polyester low elastic yarn comprises the following steps: Step 1) Prepare modified polyester chips: Step 1-1) Mix terephthalic acid, ethylene glycol, 1,2-pentanediol and catalyst, heat to 260 ‑280°C, react for 3‑5h to obtain a mixture; step 1‑2) mix N‑methylolacrylamide, 3‑aminopropanesulfonic acid, and glutaconic acid, heat to 80‑120°C, and keep warm for 1‑2h , to obtain a modifier; step 1‑3) mix the mixture and modifier, heat to 260‑270 ° C, carry out polycondensation reaction, discharge, solidify, and pelletize to obtain modified polyester chips; step 2) prepare pre Oriented yarn precursors; step 3) preparing polyester low elastic yarn precursors; step 4) post-processing polyester low elastic yarn precursors. The polyester low elastic yarn of the present application has more excellent properties, and the fabric made by using the polyester low elastic yarn has better hygroscopicity, which is beneficial to improve the comfort of human body wearing.

Description

technical field [0001] The present application relates to the technical field of polyester fibers, and more particularly, to a polyester low elastic yarn and a preparation method thereof. Background technique [0002] The scientific name of polyester is polyethylene terephthalate fiber, referred to as polyester fiber. Polyester fiber is a synthetic high polymer obtained by esterification or transesterification and polycondensation with terephthalic acid or dimethyl terephthalate and ethylene glycol, and is a synthetic fiber made by spinning and post-processing , it is an important textile material and is widely used in the textile industry. [0003] Polyester low-stretch yarn, also known as polyester low-stretch yarn, is a type of textured polyester chemical fiber. It uses polyester chips as raw materials, uses high-speed spinning polyester pre-oriented yarns as raw yarns, and is then processed by drafting and false twisting. In addition to the high breaking strength and e...

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): D01F6/84D01F6/92D01F1/10D06M13/224D06M13/295D06M15/53C08G63/91C08G63/183D01D5/08D01D5/12D01D10/02D02G1/02D06M101/32
CPCD01F6/84D01F6/92D01F1/10C08G63/916C08G63/183D01D5/08D01D5/12D01D10/02D02G1/0206D06M15/53D06M13/2243D06M13/295D06M2101/32
Inventor 汪达威高水金倪小芳陆张贤
Owner 杭州鑫典实业有限公司
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