Preparation method of anti-ultraviolet anti-pilling polyester slices

A polyester chip, anti-ultraviolet technology, applied in the direction of one-component polyester rayon filament, etc., can solve the problems of the anti-ultraviolet effect to be improved, poor anti-ultraviolet performance, easy to generate static electricity, etc., to reduce the light transmittance, Good dispersion effect, the effect of accelerating the polymerization reaction speed

Active Publication Date: 2012-05-09
JIANGSU ZHONGLU TECH DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with various natural fibers, there are still many shortcomings: hard hand feeling, poor hygroscopicity, poor UV resistance, easy to generate static electricity, easy to pilling, difficult to dye, etc.
The disadvantage of this method is: benzotriazole is an organic phenolic compound, which exists as a protonic acid under high temperature conditions, which can destroy the inorganic nano-powder TiO 2 and Al 2 o 3 or SiO 2 Surface organic treatment agent, leading to the agglomeration of inorganic nanopowders in the pre-aggregation process
[0008] In summary, the existing technologies mainly rely on the huge specific surface area of ​​inorganic nano-powders to diffusely scatter ultraviolet rays to produce an anti-ultraviolet effect, and the stability and efficiency of the anti-ultraviolet effect need to be improved. Starting from the mechanism, the preparation of polyester with better anti-ultraviolet effect and good spinnability

Method used

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  • Preparation method of anti-ultraviolet anti-pilling polyester slices
  • Preparation method of anti-ultraviolet anti-pilling polyester slices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This embodiment provides a method for preparing an anti-ultraviolet, anti-pilling polyester chip, which includes the following steps in sequence:

[0034] (1), Primary esterification reaction section: Take 18kg of purified terephthalic acid (PTA), 0.52kg of isophthalic acid, and 7.5kg of ethylene glycol (EG) into a 70-liter esterification reaction kettle, stir evenly, and start to heat up And pressurize to 0.3Mpa to carry out esterification, the esterification temperature is controlled at 250-265°C, until the esterification is completed, return to normal pressure and complete the reaction.

[0035](2) Secondary esterification reaction section: After the primary esterification is completed, ethylene glycol is firstly added to lower the temperature of the reactor to 230-235°C (at a lower system temperature, the various modifications added can be guaranteed The active component is carried out under milder dispersion conditions), then 450g of molten polyethylene glycol with...

Embodiment 2

[0038] The present embodiment provides a method for preparing an anti-ultraviolet, anti-pilling polyester chip, which comprises the following steps in sequence:

[0039] (1), Primary esterification reaction section: Take 18kg of purified terephthalic acid (PTA), 0.52kg of isophthalic acid, and 7.5kg of ethylene glycol (EG) into a 70-liter esterification reaction kettle, stir evenly, and start to heat up And pressurize to 0.3Mpa to carry out esterification, the esterification temperature is controlled at 250-265°C, until the esterification is completed, return to normal pressure, and end the reaction.

[0040] (2), secondary esterification reaction section: after primary esterification is completed, at first add ethylene glycol, make reactor temperature drop to 230~235 ℃, then the number average molecular weight of 450g melting is the polyethylene glycol of 2000 Add to the reaction kettle under the protection of nitrogen, and stir evenly. Then add 1.125g of composite light sta...

Embodiment 3

[0043] The present embodiment provides a method for preparing an anti-ultraviolet, anti-pilling polyester chip, which comprises the following steps in sequence:

[0044] (1), Primary esterification reaction section: Take 18kg of purified terephthalic acid (PTA), 0.52kg of isophthalic acid, and 7.5kg of ethylene glycol (EG) into a 70-liter esterification reaction kettle, stir evenly, and start to heat up And pressurize to 0.3Mpa to carry out esterification, the esterification temperature is controlled at 250-265°C, until the esterification is completed, return to normal pressure, and end the reaction.

[0045] (2), secondary esterification reaction section: after primary esterification is completed, at first add ethylene glycol, make reactor temperature drop to 230~235 ℃, then the number average molecular weight of 450g melting is the polyethylene glycol of 2000 Add to the reaction kettle under the protection of nitrogen, and stir evenly. Then add 1.125g of composite light sta...

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Abstract

The invention relates to a preparation method of anti-ultraviolet anti-pilling polyester slices. The preparation method comprises an esterification reaction working procedure and a polymerization reaction working procedure, wherein the esterification reaction working procedure comprises a primary esterification reaction section and a secondary esterification reaction section; in the primary esterification reaction section, aliphatic dicarboxylic acid and / or non-para-aryl dicarboxylic acid are / is introduced to serve as a third monomer; in the secondary esterification reaction section, flexiblepolyethylene glycol is introduced to serve as a fourth monomer; after esterification is completed, a hindered amine light stabilizer and a hindered phenol antioxidant which are respectively prepared from acetic acid and ethylene glycol as a solvent and hydroxy silicone oil are added; and after prepolymerization and before final polymerization in the polymerization reaction working procedure, an ultraviolet absorbent is added. The polyester fibers spun from the polyester slices prepared by the method provided by the invention have excellent anti-ultraviolet and anti-pilling performances; and after the polyester fibers are knitted / woven into knitted / woven fabric, test shows that the fabric has the following correlated technical indexes: the ultraviolet light transmittance is not more than 5.0%, and the anti-pilling performance is not less than 4-level.

Description

technical field [0001] The invention relates to a preparation method of anti-ultraviolet and anti-pilling polyester chips. Background technique [0002] Since the advent of polyester fiber, it has been widely used in clothing textiles due to its good strength, excellent wrinkle resistance, drape performance and washable wearability. After decades of rapid development, PET polyester fiber has become the world's most It is the synthetic polyester variety with the largest output and widest application range. However, compared with various natural fibers, there are still many shortcomings: hard hand feeling, poor hygroscopicity, poor UV resistance, easy to generate static electricity, easy to pilling, difficult to dye, etc. Although natural fibers such as cotton, silk, wool, hemp, etc. have good dyeing performance, the fabric has air permeability, good sweat absorption and moisturizing performance, no static electricity, and good comfort, but they are easy to wrinkle, moisture-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/695C08G63/672C08G63/78C08K5/3475C08K5/3492C08K3/22D01F6/92
Inventor 边树昌
Owner JIANGSU ZHONGLU TECH DEV
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