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Preparation method of high tensile modulus polymer nano composite fiber based on electrospinning technology

A nanocomposite fiber and electrospinning technology, which is applied in the field of preparation of high tensile modulus polymer nanocomposite fibers, can solve the problems of high filling volume of polymer nanocomposite fibers and high requirements for nanoparticle processing, and achieve interaction Force enhancement, low equipment requirements, high Young's modulus effect

Active Publication Date: 2019-04-16
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to achieve the target reinforcement effect, the polymer nanocomposite fibers prepared by this method still have the problem of high filling content, and the processing requirements for nanoparticles are relatively high.

Method used

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  • Preparation method of high tensile modulus polymer nano composite fiber based on electrospinning technology
  • Preparation method of high tensile modulus polymer nano composite fiber based on electrospinning technology
  • Preparation method of high tensile modulus polymer nano composite fiber based on electrospinning technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In a nitrogen atmosphere, place the zinc foil in a quartz tube (120 cm long and 10 cm in diameter) at 700 °C and slowly feed oxygen and saturated water vapor at a rate of 50 standard milliliters per minute to participate in the reaction (oxygen and saturated water vapor) The water vapor volume ratio is 1:1, that is, the feed rate of oxygen and saturated water vapor is 25 standard ml / min), the oxygen flow rate and reaction time are strictly controlled to obtain a narrow size distribution range, the average arm diameter is within about 25nm, and the average arm diameter Tetragonal pyramidal zinc oxide nanoparticles with a length of about 70nm.

[0025] Dissolve 2.0g of coupling agent (γ-aminopropyltriethoxysilane) in 50mL of water-ethanol mixed solution (the volume ratio of water and ethanol is 1:1), ultrasonically disperse at room temperature for 1h, and then add 0.8g of the above The synthesized tetragonal pyramid-shaped zinc oxide nanoparticles were heated and stirred ...

Embodiment 2

[0029] In a nitrogen atmosphere, place the zinc foil in a quartz tube (120 cm long and 10 cm in diameter) at 700 °C and slowly feed oxygen and saturated water vapor at a rate of 50 standard milliliters per minute to participate in the reaction (oxygen and saturated water vapor) The water vapor volume ratio is 1:1, that is, the feed rate of oxygen and saturated water vapor is 25 standard ml / min), the oxygen flow rate and reaction time are strictly controlled to obtain a narrow size distribution range, the average arm diameter is within about 25nm, and the average arm diameter Tetragonal pyramidal zinc oxide nanoparticles with a length of about 70nm.

[0030] Dissolve 2.0 g of coupling agent (pyrophosphate titanate) in 50 mL of water-ethanol solution (volume ratio of water and ethanol is 1:1), ultrasonically disperse at room temperature for 1 hour, and then add 0.8 g of the tetragonal pyramid synthesized above. Zinc oxide nanoparticles were heated and stirred at 60° C. for 2 hou...

Embodiment 3

[0034] In a nitrogen atmosphere, place the zinc foil in a quartz tube (120 cm long and 10 cm in diameter) at 700 °C and slowly feed oxygen and saturated water vapor at a rate of 50 standard milliliters per minute to participate in the reaction (oxygen and saturated water vapor) The water vapor volume ratio is 1:1, that is, the feed rate of oxygen and saturated water vapor is 25 standard ml / min), the oxygen flow rate and reaction time are strictly controlled to obtain a narrow size distribution range, the average arm diameter is within about 25nm, and the average arm diameter Tetragonal pyramidal zinc oxide nanoparticles with a length of about 70nm.

[0035] Dissolve 2.0 g of coupling agent (γ-aminopropyltriethoxysilane) in 50 mL of water-ethanol solution, ultrasonically disperse at room temperature for 1 h, add 0.8 g of synthesized tetragonal pyramid-shaped zinc oxide nanoparticles, and store at 60 °C After heating and stirring at low temperature for 2 hours, it was filtered, ...

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Abstract

The invention belongs to the technical field of electrospinning, and particularly relates to a preparation method of a high tensile modulus polymer nano composite fiber based on an electrospinning technology. The method firstly uses synthetic tetragonal pyramidal zinc oxide nanoparticles as raw materials, manufactures surface-modified zinc oxide nano-branched particles by modifying the nanoparticles with a coupling agent, thoroughly mixes the surface-modified zinc oxide nano-branched particles and the polymer in an organic solvent to obtain an electrospinning solution, and finally conducts electrospinning to obtain the high tensile modulus nano composite fiber. The method adopts an electrospinning method to prepare the high tensile modulus nanofiber, the operation is easy, the production process is simple, the equipment requirement is low, the obtained nano composite fiber only enhances the mechanical behavior of an original polymer fiber and less affects other characteristics, and thefiber has a larger specific surface area and higher tensile modulus, and is easy to industrialize.

Description

technical field [0001] The invention belongs to the technical field of electrospinning, and in particular relates to a method for preparing a high tensile modulus polymer nanocomposite fiber based on the electrospinning technology. Background technique [0002] Electrospinning is an efficient method for preparing polymer nanocomposite fibers or fiber mats. The functional materials prepared by this technology have been widely used in biomedical materials, electronic devices and other fields. The diameter of electrospun fibers is about 0.05-2 microns, and the smaller diameter usually leads to low mechanical tensile modulus, which limits its application. Common methods for mechanical modification of electrospun fibers include the preparation of extremely fine fibers (when the diameter is smaller than a certain size, such as 100nm, the increase in Young's modulus is inversely proportional to the decrease in diameter), which is closer to the tensile modulus. Compounding of large...

Claims

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Application Information

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IPC IPC(8): D01F6/56D01F6/48D01F6/46D01F6/92D01F1/10
CPCD01F1/10D01F6/46D01F6/48D01F6/56D01F6/92
Inventor 邓声威王建国
Owner ZHEJIANG UNIV OF TECH
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