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Hydrophilic flame-resistant polyester fiber material and preparation method thereof

A flame-retardant polyester and fiber material technology, applied in the field of polyester fiber, can solve problems such as harsh operating equipment and process conditions, difficulty in meeting industrialized production, and low melting temperature of polyester fiber, so as to improve heat resistance and affinity Water-based, excellent limiting oxygen index and moisture regain, good flame retardant effect

Inactive Publication Date: 2018-05-18
ZHEJIANG HAILI ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventors have found that the polyester fiber has a lower melting temperature, a lower limiting oxygen index, and poor flame retardancy
[0004] The patent of CN105431470A discloses a preparation method of hydrophilic polyester fiber. By using a mixture of alkali and hydrophilic polymer to treat hydrophobic polyester fiber at a specific fiber-forming stage, the polyester fiber is significantly improved. The hydrophilicity of the fiber, but the operating equipment and process conditions are relatively harsh, it is difficult to meet the needs of industrial production
However, the inventors have found that the copolymerized flame retardant does not have a good flame retardant effect at high temperatures, and it will melt above 236 ° C, which needs further improvement

Method used

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  • Hydrophilic flame-resistant polyester fiber material and preparation method thereof
  • Hydrophilic flame-resistant polyester fiber material and preparation method thereof
  • Hydrophilic flame-resistant polyester fiber material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0033] A method for preparing a hydrophilic flame-retardant polyester fiber material, comprising the following steps:

[0034] (1) Hydrophilic modification of pentaerythritol: Prepare saturated copper sulfate solution, heat it in a water bath to 56°C, slowly add pentaerythritol powder, after fully stirring, turn off the heating, add ethylene glycol for precipitation, and dry and pulverize the precipitate to obtain the pentaerythritol hydrophilic modification . Wherein, the amount of pentaerythritol is 14% of the mass of the saturated copper sulfate solution, and the precipitate is dried until the moisture content is less than 5%.

[0035] (2) Preparation of hydrophilic copolyester chips: Mix and stir 166g (1mol) of terephthalic acid, 93g (1.5mol) of ethylene glycol, and 0.75g (0.003mol) of cobalt acetate tetrahydrate, and react at 230°C for 1.5h , add polymeric halogen-free flame retardant FRX-1001.0g, pore-forming agent talc powder 4.3g, raise the temperature to 250°C for 1....

Embodiment 2

[0042] A method for preparing a hydrophilic flame-retardant polyester fiber material, comprising the following steps:

[0043] (1) Hydrophilic modification of pentaerythritol: Prepare saturated copper sulfate solution, heat it in a water bath to 52°C, slowly add pentaerythritol powder, after fully stirring, turn off the heating, add ethylene glycol for precipitation, dry and pulverize the precipitate to obtain a hydrophilic modified pentaerythritol . Wherein, the amount of pentaerythritol is 18% of the mass of the saturated copper sulfate solution, and the precipitate is dried until the moisture content is less than 5%.

[0044] (2) Preparation of hydrophilic copolyester chips: Mix and stir 166g (1mol) of terephthalic acid, 86.8g (1.4mol) of ethylene glycol, and 1.0g (0.004mol) of cobalt acetate tetrahydrate, and react at 225°C for 1.6h Finally, add polymeric halogen-free flame retardant FRX-1001.6g, pore-forming agent polyvinylpyrrolidone 4.5g, heat up to 252°C for 1.2h, the...

Embodiment 3

[0051] A method for preparing a hydrophilic flame-retardant polyester fiber material, comprising the following steps:

[0052] (1) Hydrophilic modification of pentaerythritol: Prepare saturated copper sulfate solution, heat it in a water bath to 58°C, slowly add pentaerythritol powder, after fully stirring, turn off the heating, add ethylene glycol for precipitation, dry and pulverize the precipitate to obtain a hydrophilic modified pentaerythritol . Wherein, the amount of pentaerythritol is 18% of the mass of the saturated copper sulfate solution, and the precipitate is dried until the moisture content is less than 5%.

[0053] (2) Preparation of hydrophilic copolyester chips: mix and stir 166g (1mol) of terephthalic acid, 80.6g (1.3mol) of ethylene glycol, and 1.5g (0.006mol) of cobalt acetate tetrahydrate, and react at 222°C for 2h , add 1.5g of polymeric halogen-free flame retardant FRX-1000, 5.3g of pore-forming agent wood powder, raise the temperature to 255°C for 1.2h,...

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Abstract

The invention relates to the technical field of polyester fiber, in particular to a hydrophilic flame-resistant polyester fiber material and a preparation method thereof. The preparation method of thepolyester fiber comprises the steps of hydrophilic modification of pentaerythritol, preparation of hydrophilic copolyester slices, crystallization drying, POY spinning, stretching shaping and pore forming agent dissolution. The method is reasonable; the parameter is precisely controlled. Compared with the prior art, the material has the advantages that the hydrophilic performance, the moisture absorption performance and the flame resistance are greatly improved; the excellent limit oxygen index and moisture regain can be realized; the hand feeling is comfortable; the application of the material to the field of textile and garment can be expanded; the defect that the existing polyester fiber is difficult to simultaneously achieve the hydrophilic performance, the moisture absorption performance and the heat resistant and flame-resistant performance is overcome.

Description

technical field [0001] The invention relates to the technical field of polyester fibers, in particular to a hydrophilic flame-retardant polyester fiber material and a preparation method thereof, in particular to a hydrophilic flame-retardant polyester fiber with good hygroscopicity and mechanical strength and a preparation method thereof. Background technique [0002] Polyester fiber has become the most widely used variety in synthetic fibers because of its excellent mechanical strength, heat resistance, and chemical resistance. However, due to the regular arrangement of the molecular structure of polyester itself, high crystallinity and large Young's modulus, as Fibers in the textile field have the problem of hard hand feeling, which affects their comfort; at the same time, polyester molecules lack polar functional groups, have poor hydrophilicity and hygroscopicity, and will burn quickly after being ignited. 0.4%, while the moisture regain of natural fiber cotton reached 7...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/07D01F1/10
CPCD01F1/07D01F1/10D01F6/92
Inventor 尚福平
Owner ZHEJIANG HAILI ENVIRONMENTAL TECH CO LTD
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