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Hydrophilic copolyester slices prepared by continuous method and preparation method thereof

A hydrophilic, copolyester technology, applied in the field of polyester modification, can solve the problem of no obvious increase in fiber moisture regain, and achieve the effects of good hydrophilic performance, easy industrial production, and low production cost.

Inactive Publication Date: 2012-06-20
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the dyeability and softness of the modified polyester fiber are improved, the moisture regain of the fiber is not significantly 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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  • Hydrophilic copolyester slices prepared by continuous method and preparation method thereof
  • Hydrophilic copolyester slices prepared by continuous method and preparation method thereof
  • Hydrophilic copolyester slices prepared by continuous method and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Feed PTA at 20000kg / h (120481.93mol / h), EG at 8590.36kg / h (138554.22mol / h) and 1,2-PDO at 183.35kg / h (2409.64mol / h) The feed rate is respectively added to the beating kettle 2 from the first feed port 1 for beating; the above-mentioned slurry is continuously and uniformly transported to the first esterification kettle 4 for esterification reaction, and the reaction of the first esterification kettle 4 The temperature is 240°C, and the reaction time is 200 minutes; then it is transported to the second esterification tank 7 through a delivery pump, and at the same time, SIPE is fed at a rate of 643.90kg / h (1807.23mol / h), and PEG6000 is fed at a rate of 2000kg / h h (333.33mol / h) feed rate, TiO 2 At a feed rate of 100kg / h (1251.88mol / h), antimony acetate at a feed rate of 6kg / h (20.07mol / h) and triphenyl phosphate at a feed rate of 4kg / h (12.26mol / h) , from the second feed port 6 evenly added to the second esterification tank 7, the reaction temperature of the second esteri...

Embodiment 2

[0056] Feed PTA at a feed rate of 20000kg / h (120481.93mol / h) and EG at a feed rate of 8590.36kg / h (138554.22mol / h), respectively, from the feed port 1 into the beating tank 2 for beating; The slurry is continuously and uniformly transported to the first esterification tank 4, the reaction temperature of the first esterification tank 4 is 240°C, and the reaction time is 200 minutes; then it is transported to the second esterification tank 7 by a delivery pump, and at the same time, Respectively feed SIPE at 643.90kg / h (1807.23mol / h), PEG6000 at 2000kg / h (333.33mol / h), 1,2-PDO at 183.35kg / h (2409.64mol / h ) feed rate, TiO 2 At a feed rate of 100kg / h (1251.88mol / h), antimony acetate at a feed rate of 6kg / h (20.07mol / h) and triphenyl phosphate at a feed rate of 4kg / h (12.26mol / h) , from the second feed port 6 evenly added to the second esterification tank 7, the reaction temperature of the second esterification tank 7 is 250 ° C, the reaction time is 90 minutes; In the polyconden...

Embodiment 3

[0059] Feed PTA at 20000kg / h (120481.93mol / h), EG at 8590.36kg / h (138554.22mol / h) and 1,2-PDO at 733.4kg / h (9638.56mol / h) The feed rate is respectively added to the beating kettle 2 from the feed port 1 for beating; the above-mentioned slurry is continuously and uniformly transported to the first esterification kettle 4, and the reaction temperature of the first esterification kettle 4 is 240 ° C. The time is 200 minutes; then transported to the second esterification tank 7 by the delivery pump, at the same time, SIPE is fed at a feed rate of 2575.6kg / h (7228.92mol / h), PEG6000 is fed at a rate of 200kg / h (33.33mol / h) ) feed rate, TiO 2 At a feed rate of 400kg / h (5007.51mol / h), antimony acetate at a feed rate of 6kg / h (20.07mol / h) and triphenyl phosphate at a feed rate of 4kg / h (12.26mol / h) , from the second feed port 6 evenly added to the second esterification tank 7, the reaction temperature of the second esterification tank 7 is 250 ° C, the reaction time is 90 minutes; and...

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Abstract

The invention discloses a continuous method for preparing hydrophilic copolyester slices and the hydrophilic copolyester slices prepared by the preparation method. The preparation method of the hydrophilic copolyester slices prepared by the continuous method comprises the following steps: continuously and uniformly adding pure terephthalic acid, ethylene glycol, benzene dibasic acid binary alcohol ester-5-sodium sulfonate, polydibasic alcohol, other dibasic alcohols, a delustering agent and the like into a beating kettle in proportion, performing esterification, prepolycondensation and polycondensation reactions, discharging, pelletizing and drying to get the hydrophilic copolyester slices. A continuous polymerization device is adopted for synthesis; and in the prepared hydrophilic copolyester slices, the molecular structure of polyester is changed by adding hydroxyl-containing components and inorganic powder into copolyester slices, thus the hydrophilic property is good. The preparation method is simple, the manufacturing process has no special requirements on the polymerization device, and the hydrophilic copolyester slices can be produced on existing domestic or imported equipment, so that the production cost is slow and industrial production is easy to realize.

Description

technical field [0001] The invention relates to a hydrophilic copolyester chip and a preparation method thereof, belonging to the technical field of polyester modification. Background technique [0002] The molecular structure of PET fiber has a high degree of stereoregularity, the molecular chains are tightly arranged, the structure is symmetrical, and the molecular chain contains rigid benzene rings. This makes PET have good physical and mechanical properties, chemical corrosion resistance, and microbial erosion resistance. PET's high crystallinity and high orientation during fiber formation make its fibers and fabrics have good shape retention, crispness, easy washing and quick drying, and are therefore popular among consumers. However, its own nature also brings disadvantages such as poor hydrophilicity of PET fibers, yarns and fabrics, and easy generation of static electricity, which hinders its further application and development. Therefore, when polyester fiber came ...

Claims

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Application Information

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IPC IPC(8): C08G63/688C08G63/672C08G63/78C08K13/02C08K3/22C08K5/523C08K5/521D01F6/92D01F1/10
Inventor 俞建勇赵明良王学利李发学刘渊
Owner DONGHUA UNIV
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