Method and apparatus for manufacturing polymer composite piezoelectric material having boron nitride nanotubes dispersed therein, and polymer composite piezoelectric material manufactured by the method

Abstract

A method for manufacturing a polymer composite piezoelectric material having boron nitride nanotubes (BNNTs) dispersed therein, according to one embodiment of the present invention, may comprise: a solution preparation step for preparing a polymer solution; a dispersion step for dispersing BNNTs in the polymer solution; and an electrospinning step for, by using an electrospinning method, carryingout electrospinning on the polymer solution having the BNNTs dispersed therein, thereby producing a polymer composite piezoelectric material on a nanofiber.

Description

technical field [0001] The present invention relates to a preparation method and device of a polymer composite piezoelectric material dispersed with boron nitride nanotubes and a polymer composite piezoelectric material prepared by the method. The boron nitride nanotubes are arranged in the same direction as the fibers without a separate polarization alignment process, which can improve the polarization effect and piezoelectric characteristics. The preparation method and device of the polymer composite piezoelectric material dispersed with boron nitride nanotubes and The polymer composite piezoelectric material prepared by this method. Background technique [0002] Boron nitride nanotubes (BNNTs: Boron Nitride Nanotubes) are similar to well-known carbon nanotubes (CNT: Carbon Nanotubes) in mechanical properties and thermal conductivity properties. However, carbon nanotubes are electrically composed of a mixture of conductors and semiconductors, and have the characteristics ...

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Problems solved by technology

However, due to the electrical insulation of boron nitride nanotubes, the efficiency in the electrical polarization process is reduced, and there is a disadvantage that a very high voltage must be applied.

Also, when dispersing polymers, the efficiency of the die-casting process using the physical polarization method of aligning boron nitride with mechanical shear force is very low, so it is not very effective in improving the piezoelectricity of composite materials

As a result, the polarization process through this array has the limitation that it needs to be performed at a very high voltage, or repeated mechanical processes require a lot of time and cost.

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