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Method for preparing flame-retardant anti-dripping copolyester fibers

A technology of copolyester and anti-droplet, which is applied in the field of copolyester fiber, can solve the problems of difficult peeling and dispersion, and achieve good application prospects, simple process and low cost

Inactive Publication Date: 2011-09-14
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to effectively exfoliate and disperse with natural silicates such as montmorillonite and kaolin

Method used

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  • Method for preparing flame-retardant anti-dripping copolyester fibers
  • Method for preparing flame-retardant anti-dripping copolyester fibers
  • Method for preparing flame-retardant anti-dripping copolyester fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 5 grams of Laponite, an inorganic clay, into 110 milliliters of water, and stir at a high speed for 1 hour at room temperature, at which point the liquid becomes clear and transparent. Then add 35 milliliters of ethylene glycol, stir for 4 hours, and remove 80 milliliters of water in the mixed liquid by distillation under reduced pressure. Add this mixed solution to 250 grams of terephthalic acid, 100 milliliters of ethylene glycol and 32 grams of 2-carboxyethylphenylphosphinic acid, add 0.1 gram of ethylene glycol antimony as a catalyst, add 0.075 gram of triphenyl phosphate For heat stabilizer. The esterification reaction is carried out at 230°C and the pressure is 0.3 MPa, and then the polycondensation reaction is carried out under the high vacuum condition of 260°C to obtain flame-retardant and droplet-resistant copolyester chips. The resulting copolyester had an intrinsic viscosity of 0.56 and a melting point of 247°C.

[0026] The copolyester chip is melt-sp...

Embodiment 2

[0028] Add 7.5 grams of Laponite, an inorganic clay, into 160 milliliters of water, and stir at a high speed for 1 hour at room temperature, at which point the liquid becomes clear and transparent. Then add 50 milliliters of ethylene glycol, stir for 4 hours, and remove 100 milliliters of water in the mixed liquid by distillation under reduced pressure. Add this mixed solution to 250 grams of terephthalic acid, 100 milliliters of ethylene glycol and 40 grams of 2-carboxyethylphenylphosphinic acid, add 0.1 gram of ethylene glycol antimony as a catalyst, add 0.075 gram of triphenyl phosphate For heat stabilizer. The esterification reaction is carried out at 240°C and the pressure is 0.2 MPa, and then the polycondensation reaction is carried out under the high vacuum condition of 270°C to obtain flame-retardant and anti-droplet copolyester chips. The resulting copolyester had an intrinsic viscosity of 0.50 and a melting point of 241°C.

[0029] The copolyester chips were dried ...

Embodiment 3

[0031]Add 3 grams of Laponite, an inorganic clay, into 60 milliliters of water, and stir at a high speed for 1 hour at room temperature, at which point the liquid becomes clear and transparent. Then add 20 milliliters of ethylene glycol, stir for 4 hours, and remove 40 milliliters of water in the mixed liquid by distillation under reduced pressure. This mixed solution was added to 250 grams of terephthalic acid, 130 milliliters of ethylene glycol and 35 grams of 9,10-dihydro-9-oxa-10-phosphaphenanthrene, and 0.1 grams of ethylene glycol Cobalt is used as a catalyst, and 0.075 grams of triphenyl phosphate is added as a thermal stabilizer. The esterification reaction is carried out at 250°C and the pressure is 0.35 MPa, and then the polycondensation reaction is carried out under the high vacuum condition of 280°C to obtain flame-retardant and droplet-resistant copolyester chips. The resulting copolyester had an intrinsic viscosity of 0.54 and a melting point of 247°C.

[0032]...

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Abstract

The invention relates to a method for preparing flame-retardant anti-dripping copolyester fibers. The method comprises the following steps: firstly dispersing inorganic clay into nano-size lamellas in water; secondly utilizing dibasic alcohol to further cover the lamellas and enabling the lamellas to carry out condensation polymerization with aromatic dibasic acid, dibasic alcohol and a flame retardant containing phosphorus to obtain flame-retardant anti-dripping copolyester composites; and finally carrying out melt spinning on the flame-retardant anti-dripping copolyester composites to prepare the flame-retardant anti-dripping copolyester fibers. The method has the following beneficial effects: the method has the advantages of simple process and low cost and is suitable for industrialization; and the obtained copolyester fibers have good flame retardant and anti-dripping effects and have a good application prospect in such fields as protective clothing, military uniforms, decorative fabrics for high-rise hotels and the like.

Description

technical field [0001] The invention belongs to the field of copolyester fibers, in particular to a method for preparing flame-retardant and droplet-resistant copolyester fibers. Background technique [0002] Since its inception, polyester fiber has become the fastest-growing variety among synthetic fibers with its absolute comprehensive advantages. However, the limiting oxygen index of polyester fiber is low, and it is easy to burn and cause a fire, which poses a serious threat to people's life and property safety. Therefore, the research on polyester fabric flame retardant technology has become a subject of great concern in academia and industry. The burning feature of polyester fabric is that the fabric is heated and melted, accompanied by dripping, and the melted droplets will remove the burning part from the textile, causing the flame to temporarily extinguish. Such fabrics not only easily expose the wearer to direct heat from fire sources, but also cause scalds or bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/07C08G63/692D01D5/08
Inventor 马敬红龚静华徐坚房长婧
Owner DONGHUA UNIV
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