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Method for preparing Nano composite material of polyester in use for fibers in deep dyed color

A polyester nano-composite material technology, applied in dyeing, textiles and papermaking, etc., can solve the problems of low physical properties, high shrinkage rate, reduced crystallinity of copolymer fibers, etc., and achieve the effect of improving the dyeing rate

Inactive Publication Date: 2008-06-18
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this method will cause the crystallinity of the copolymer fiber to be greatly reduced, so that the production of the copolymer fiber is difficult, the shrinkage rate is high, and the physical properties are lower than those of conventional polyester.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 95% ethanol to a 2000mL beaker, add 10 grams of polyvinylpyrrolidone under stirring, and heat to 70°C. After the polyvinylpyrrolidone is completely dissolved, take 100 grams of nano-silica hydrosol and pour it into the above-mentioned ethanol solution. After stirring and reacting at ℃ for 1 hour, filter, wash, place in an oven at 100 ℃ for activation for 1 hour, and then dry for use.

[0020] Disperse the above-mentioned organically modified nano-silica in ethylene glycol to form a slurry with a concentration of 20%, first disperse it in a high-speed disperser, and then grind it in a circulating sand mill. The slurry is subjected to a particle size splash test with a laser particle size analyzer. When the average particle size of nano-silica in the slurry is less than 100 nanometers, the grinding is stopped, and the slurry is discharged for later use.

[0021] 8,000 grams of terephthalic acid, 4,000 grams of ethylene glycol, and 48 grams of the above-mentioned nano-...

Embodiment 2

[0024] The difference from the method described in Example 1 is that a silane coupling agent is used for surface modification of the nano-silica, and the amount of the silane coupling agent is 15% of the amount of the nano-silica.

[0025] Disperse the above-mentioned organically modified nano-silica powder in ethylene glycol to form a slurry with a concentration of 20%, first disperse it in a high-speed disperser, and then grind it in a circulating sand mill. Use a laser particle size analyzer to test the particle size of the slurry. When the average particle size of nano-silica in the slurry is less than 100 nanometers, stop grinding and discharge the slurry for later use.

[0026] 8,000 grams of terephthalic acid, 4,000 grams of ethylene glycol, and 48 grams of the above-mentioned nano-silica slurry are beaten together and added to a 30-liter polyester polymerization kettle, using antimony trioxide as a polycondensation catalyst and trimethyl phosphate as a polymerization S...

Embodiment 3

[0029] The difference from the methods described in Examples 1 and 2 is that the surface of nano-silica is not subjected to drying and activation after organic modification, and the average particle size is always kept below 20 nanometers. First, dissolve the silane coupling agent in water, stir well, then add it into 500 g of 20% silica hydrosol, keep the temperature of the solution at 60° C., and fully stir for 0.5 hours to react. The dosage of the silane coupling agent is 10% of the mass of nano silicon dioxide. After fully reacting, the above-mentioned organically modified nano-silica was dispersed in 400 g of ethylene glycol. The nano-silica / ethylene glycol / water solution passes through a distillation device to remove a large amount of water, then put the solution into the liquid storage tank, and drop it into the pure ethylene glycol solution at 150°C at a speed of 40ml / min. Full dehydration reaction is made into ethylene glycol solution containing 20% ​​nano silicon di...

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Abstract

The present invention belongs to the field of nano material technology, and relates to a preparation method of polyester nano composite material for deep-dyeing fibre. It adopts nano silicon dioxide as additive modifying agent, and adopts the following steps: firstly, making it undergo the process of organic surface modification treatment, and making it be uniformly dispersed in one of polyester polymer monomer-ethylene glycol, adding the prepared nano silicon dioxide / ethylene glycol dispersing solution into reaction vessel in the process of esterification, and making them implement polymerization with polyester another monomer to obtain a polyester nano composite material, then making the polyester nano composite material undergo the process of high-temp, melt spinning treatment so as to obtain the invented polyester nano composite fibre.

Description

technical field [0001] The invention relates to a preparation method in the technical field of textiles, in particular to a preparation method of a polyester nanocomposite material that can be used for deep-dyed fibers. Background technique [0002] Polyester has excellent physical properties and good resistance to chemicals or the environment, and is widely used in other non-fiber fields such as clothing fibers, industrial fibers and films. Due to the tightly packed macromolecular chains, the polyester fiber has high crystallinity and orientation, low polarity, lack of hydrophilic groups and no dyeing position, so it is difficult to dye. Generally, disperse dyes need to be dyed under high temperature and high pressure or with a carrier, and the color spectrum is less and the color is not bright enough. In addition, high-temperature and high-pressure dyeing cannot be produced in a continuous chemical industry, and the carrier has certain toxicity, which is easy to cause env...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/52
Inventor 杨永喆古宏晨
Owner SHANGHAI JIAOTONG UNIV
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