Preparing method for producing flame-retardant polyester fibers through recycled polyester bottle flakes

A technology of flame-retardant polyester and polyester bottle flakes, which is applied in the fields of fiber chemical characteristics, rayon manufacturing, and conjugated synthetic polymer rayon, etc. It can solve the problems that the flame-retardant polyester fiber cannot be manufactured and achieve good flame retardancy The effect of the function

Inactive Publication Date: 2015-11-25
HIGHTEX CO LTD ZHEJIANG
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  • Abstract
  • Description
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Problems solved by technology

Its shortcomings: the manufacture of flame-r

Method used

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  • Preparing method for producing flame-retardant polyester fibers through recycled polyester bottle flakes

Examples

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Embodiment 1

[0007] Embodiment 1: with reference to attached figure 1 . A preparation method for producing flame-retardant polyester fibers by using recycled polyester bottle flakes, the parts by mass are: (1) Preparation of flame-retardant polyester masterbatch: 28-32 parts by mass of ethylene glycol, 68-72 parts by mass of refined Add phthalic acid, 80-300ppm antimony-based catalyst and 100-500ppm stabilizer into the beating kettle and stir for 30-60min to prepare slurry I; import slurry I into the esterification kettle, heat up to 245-260°C for 120- 200min, add 15000~30000ppm flame retardant additives, 0~1.2 parts by mass of matting agent and 200~500ppm antioxidant and continue esterification reaction for 30-60min to obtain flame retardant bishydroxyethyl terephthalate II; flame retardant Bishydroxyethyl terephthalate II is introduced into the polycondensation kettle, the temperature is raised to 265-270°C, the vacuum degree is controlled at 1200-1800Pa, and the pre-condensation is car...

Embodiment 2

[0014] Example 2: On the basis of Example 1, during the melt mixing and polycondensation process, directly add recycled bottle flakes and flame-retardant polyester masterbatch, and slowly heat up to 250-265°C under a vacuum degree of 500-1000Pa to make the material Melt, stir and mix evenly, no need to add ethylene glycol for alcoholysis and polycondensation.

Embodiment 3

[0015] Example 3: On the basis of Example 1, the recycled bottle flakes and the flame-retardant polyester masterbatch are melted by heating and fully stirred, and the flame-retardant polyester chip IV contains the flame retardant 2-carboxyethylphenylphosphine Diethylene glycol diethylene glycol ester (CEPPA-EG) has a uniform distribution of polyester segments.

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Abstract

The invention relates to a preparing method for producing flame-retardant polyester fibers through recycled polyester bottle flakes. The preparing method includes the step of preparing flame-retardant polyester parent materials, wherein 28 mass parts to 32 mass parts of ethanediol, 68 mass parts to 72 mass parts of purified terephthalic acid, 80 ppm to 300 ppm of antimony-based catalysts and 100 ppm to 500 ppm of stabilizers are added into a pulping kettle to be stirred and prepared into pulp I; the pulp I is guided into an esterification kettle and heated to 245 DEG C to 260 DEG C to be esterified, 15,000 ppm to 30,000 ppm of flame retardant assistants, 0 mass part to 1.2 mass parts of flatting agents and 200 ppm to 500 ppm of antioxidants are added for continuously carrying out the esterification reaction, and flame-retardant bis(2-hydroxyethyl)terephthalate II is prepared; the flame-retardant bis(2-hydroxyethyl)terephthalate II is guided into a condensation polymerization kettle to be heated, the vacuum degree is controlled to be 1,200 Pa to 1,800 Pa, and pre-condensation polymerization is carried out; then the vacuum degree is adjusted to be lower than 80 Pa, and heating is carried out for condensation polymerization till the condensation polymerization reaction is finished; the flame-retardant polyester parent materials III are obtained through band casting, cooling and pellet cutting, and the content A ppm of P of the flame-retardant polyester parent materials III is detected.

Description

technical field [0001] The invention relates to a preparation method for producing flame-retardant polyester fibers by using recycled polyester bottle flakes, which can not only manufacture polyester fibers with good flame-retardant function, but also use the polyester fibers to manufacture fabrics by using recycled polyester bottle flakes. The field of waste material recycling. Background technique [0002] CN101974211A, the name "recycling and modifying waste polyester bottle flakes into extruded flame-retardant trunking materials", consists of the following components by weight ratio, PET waste 40-98%; tackifier 0.1-10.0%; composite flame retardant 6 -15%; nucleating agent 0.1-3.0%; toughening agent 1-5%; anti-hydrolysis agent 0.01-0.4%; other additives 0.1-5.5%. Its shortcoming: the manufacture of flame-retardant polyester fiber cannot be realized. Contents of the invention [0003] Design purpose: To avoid the deficiencies in the background technology, to design a k...

Claims

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Application Information

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IPC IPC(8): D01F8/14D01F1/10C08G63/692C08G63/85
Inventor 兰其勇陆文龙何乐朱爱明蒋小云
Owner HIGHTEX CO LTD ZHEJIANG
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