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Method for preparing polyester fibers with ultraviolet-resistant and anti-pilling composite function

An anti-ultraviolet, polyester fiber technology, applied in the direction of single-component polyester rayon, melt spinning method, stretch spinning method, etc., can solve the problem that the anti-ultraviolet effect needs to be improved, the anti-ultraviolet performance is poor, and it is easy to generate static electricity, etc. problem, achieve the effect of reducing light transmittance, improving diffuse scattering effect, and small kinematic viscosity

Active Publication Date: 2012-05-09
JIANGSU GUOWANG HIGH TECH FIBER CO LTD
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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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  • Method for preparing polyester fibers with ultraviolet-resistant and anti-pilling composite function
  • Method for preparing polyester fibers with ultraviolet-resistant and anti-pilling composite function
  • Method for preparing polyester fibers with ultraviolet-resistant and anti-pilling composite function

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Embodiment 1

[0036] The present embodiment provides a method for preparing an anti-ultraviolet, anti-pilling polyester chip, which comprises the following steps in sequence:

[0037](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.

[0038] (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 ...

Embodiment 2

[0041] The present embodiment provides a method for preparing an anti-ultraviolet, anti-pilling polyester chip, which comprises the following steps in sequence:

[0042] (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.

[0043] (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

[0046] The present embodiment provides a method for preparing an anti-ultraviolet, anti-pilling polyester chip, which comprises the following steps in sequence:

[0047] (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.

[0048] (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 method for preparing polyester fibers with ultraviolet-resistant and anti-pilling composite function. The method comprises an esterification reaction procedure, a polymerization reaction procedure and a spinning procedure, wherein the esterification reaction procedure comprises a primary esterification reaction stage and a secondary esterification reaction stage, and aliphatic dicarboxylic acid or non-p-aryl dicarboxylic acid serving as a third monomer is introduced in the primary esterification reaction stage; flexible polyethylene glycol serving as a fourth monomer is introduced in the secondary esterification reaction stage; a hindered amine light stabilizer and a hindered phenol antioxidant which are respectively prepared by using acetic acid and ethylene glycol as solvents and hydroxy silicone oil are added after the esterification is completed; and after the pre-polymerization of the polymerization reaction procedure is completed and before final polymerization, an ultraviolet absorbent is added. Before the spinning procedure, polyester slices are pre-crystallized and dried. The polyester fibers obtained by the method have excellent ultraviolet-resistant and anti-pilling function; and after the polyester fibers are woven into knitted fabrics and woven fabrics, tests show the related technical indexes that: the ultraviolet transmission rate is less than or equal to 5.0 percent, and the anti-pilling performance is more than or equal to level 4.

Description

technical field [0001] The invention relates to a preparation method of polyester fiber with anti-ultraviolet and anti-pilling composite functions. 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 e...

Claims

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Application Information

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IPC IPC(8): D01F6/92C08G63/695C08G63/672C08G63/78C08K5/3475C08K5/3492C08K3/22D01D5/08D01D5/12D01D10/02
Inventor 边树昌
Owner JIANGSU GUOWANG HIGH TECH FIBER CO LTD
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