Manufacturing method of triboelectrification film based on composite nanoparticle doping

Abstract

The invention relates to a manufacturing method of a triboelectrification film based on composite nanoparticle doping. The method comprises the steps of weighing SiO2@Ag composite nanoparticles according to the standard that the doping mass fraction of the SiO2@Ag composite nanoparticles is 0.02% to 0.5%, pouring the SiO2@Ag composite nanoparticles into a weighed PDMS stock solution, forming a PDMS mixed solution, and conducting stirring, defoaming, dispersing and defoaming treatment on the mixed solution; dropwise adding a curing agent to the PDMS mixed solution, and then conducting stirringand defoaming treatment on the mixed solution; adopting a spin-coating method to conduct spin-coating operation of the PDMS mixed solution on the upper surface of a piece of clean and dry copper foil,and forming a uniform film; and finally, putting the copper foil into a culture dish, and then putting the culture dish into a vacuum drying oven to be subjected to curing treatment so that the triboelectrification film based on composite nanoparticle doping can be obtained. According to the manufacturing method, the dielectric constant of the triboelectrification film can be improved, and the agglomeration problem of the nanoparticles in the triboelectrification film is effectively solved.

Description

[0001] (1) Technical field: [0002] The invention relates to a method for preparing a triboelectric thin film, in particular to a method for preparing a triboelectric thin film based on composite nanoparticle doping. [0003] (two), background technology: [0004] Triboelectric nanogenerator (TENG) converts tiny mechanical energy into electrical energy based on triboelectric effect and electrostatic inductive coupling. It applies a new type of energy harvesting technology and has broad applications in micro energy and large-scale energy acquisition. prospect. However, at present, the output performance, robustness, and environmental adaptability of triboelectric nanogenerators are poor. These defects have gradually become prominent in the process of its engineering application, and have become the bottleneck of its further promotion and application. The inherent characteristics of the triboelectric material of the triboelectric nanogenerator are crucial to improving its outpu...

AI Technical Summary

Problems solved by technology

Theoretically, the larger the doping volume ratio of nanoparticles, the more obvious the increase in dielectric constant, but in practical applications, too much nanoparticle doping will damage the molecular structure of the dielectric material and change the dielectric material. On the other hand, excessive nanoparticle doping, especially metal nanoparticle doping, will cause percolation, which will cause a large amount of triboelectric leakage, thereby reducing the output performance of TENG.

[0006] One of the main problems existing in the existing nano-doping technology is the dispersion of nanoparticles. The agglomerated nanoparticles will bring more defects inside the film, which will affect the improvement of its performance. This is because the size of nanoparticles is in the nanometer Grade, with a large specific surface area and high surface energy, so it is easy to agglomerate under the action of van der Waals force, and most friction materials are easily polluted by chemicals. If the nanoparticles are dispersed by reagents and then mixed with Into the friction material, not only introduces the second variable, which brings difficulties to the analysis, but also the reagent material as a solvent may bring a certain degree of pollution to the nanoparticles and the friction material, for example, the silver nanoparticles may be oxidized during the dispersion process, thereby affecting its performance

[0007] Doping materials are mainly divided into two types: conductive nanomaterials and insulator nanomaterials. Conductive nanomaterials have problems such as large surface potential energy of metal nanoparticles, easy agglomeration, and easy seepage, while insulator nanomaterials have limited dielectric constant and limited lifting effect.

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