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A kind of graphene/polyethylene terephthalate composite fiber and preparation method thereof

A polyethylene terephthalate and composite fiber technology, applied in the direction of single-component polyester rayon, can solve the problems of high addition of inorganic powder, damaged mechanical properties, small specific surface area, etc., to achieve The effect of good dispersion, good mechanical properties, and high UV absorption rate

Active Publication Date: 2018-04-06
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These nanoparticles have the defects of high density and small specific surface area, which lead to high addition of inorganic powder, reduced spinnability and impaired mechanical properties, and require a variety of nanoparticles to cooperate with each other to achieve the purpose of multifunctional modification.

Method used

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  • A kind of graphene/polyethylene terephthalate composite fiber and preparation method thereof
  • A kind of graphene/polyethylene terephthalate composite fiber and preparation method thereof
  • A kind of graphene/polyethylene terephthalate composite fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of graphite oxide:

[0034] Add 30g of sodium nitrate and 675mL of concentrated sulfuric acid into a three-necked flask, stir slowly in an ice-water bath, add 75g of potassium permanganate, 15g of graphite, bath in ice-water for 30min, mechanically stir at room temperature, heat in a water bath to 35°C, keep for 5h, and then pour 1300mL into it. Heat to 98°C in deionized water, keep stirring, add hydrogen peroxide after about 30 minutes until no gas comes out, and the reaction is over. Wash the product with 10% dilute hydrochloric acid to remove metal ions, and then dry it to obtain graphite oxide.

[0035] (2) Preparation of graphene:

[0036] Disperse 1.0 g of graphite oxide into 100 g of water by ultrasonic stripping with a probe, the power is about 40 W, and the ultrasonic time is 1.5 hours to obtain dispersion A. Add the aqueous solution of graphite oxide into 400 g of N-methylpyrrolidone (NMP), continue ultrasonic dispersion, observe with an opti...

Embodiment 2

[0047] The preparation of the graphene oxide dispersion is the same as in Example 1.

[0048] Preparation of composite resin masterbatch:

[0049] 0.4g of graphene obtained by thermal reduction is ultrasonically dispersed in o-chlorophenol with a probe. After about 1.5 hours, use an optical microscope to observe that the dispersion is good, then add PET powder, stir magnetically, heat the oil bath to reflux at 165°C, and dissolve completely after about 3 hours. Stop heating and stirring, mash after cooling to room temperature, add a large amount of acetone to sonicate. Wash off the o-chlorophenol, and wash with suction until the filtrate is colorless. Dry in a blast oven at 60°C, and dry in a vacuum oven at 120°C for 48 hours.

[0050] Preparation of graphene modified composite fiber:

[0051] (1) Get 5 mass parts of masterbatch, 95 mass parts of PET chips;

[0052] (2) Send the masterbatch and PET chips into a vacuum drum dryer for drying treatment. The drying process is ...

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Abstract

The invention relates to a graphene / polyethylene terephthalate composite fiber and a preparation method thereof. The composite fiber is prepared from, by mass, 5-20 parts of composite master batches and 80-95 parts of PET chips. The preparation method includes the steps that graphite is oxidized to obtain graphite oxide, then the graphite oxide is ultrasonically dispersed in deionized water, a graphite oxide water solution is obtained and dispersed in a high-boiling-point organic solvent, ultrasonic treatment, heating reflux, reduction vaporization, washing, filtering and drying are conducted, and graphene is obtained; the graphene is ultrasonically dispersed in a PET solvent, graphene dispersion liquid is obtained, then PET is added, stirring, oil bath heating reflux, cooling, ultrasonic treatment, washing and drying are conducted, and the composite batches are obtained; the composite master batches and the PET chips are subjected to vacuum drying and then heated, extruded, wound and drawn, and the composite fiber is obtained. The fiber which is well dispersed and has certain strength and functions is obtained, and the fiber has high potential in application of functional fibers and fabric.

Description

technical field [0001] The invention belongs to the field of preparation of composite fibers, in particular to a graphene / polyethylene terephthalate composite fiber and a preparation method thereof. Background technique [0002] PET fiber is widely used and the technology is mature, but there are deficiencies such as poor anti-ultraviolet and anti-static properties, and high dry heat shrinkage. At present, the improvement of polymer performance is mainly carried out from the aspects of high performance and functionalization. The main methods for improving mechanical properties and thermal stability are nano-clay, nano-silica, carbon nanotubes, etc.; anti-ultraviolet functionalization is made of carbon black, silica, Inorganic nanoparticles such as titanium dioxide are completed; antistatic functions are completed by carbon materials such as expanded graphite and carbon nanotubes; in addition, magnetic, antibacterial and other functions are doped with magnetic metal particles...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/10
CPCD01F1/10D01F1/106D01F6/92
Inventor 朱美芳王鹿陈少华毛宇辰
Owner DONGHUA UNIV
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