Preparation method of friction nano-generator and friction nano-generator

Abstract

The invention provides a preparation method of a self-repairing material and application of the self-repairing material. The preparation method comprises the following steps: taking bis (3aminopropyl)-terminated poly (dimethylsiloxane) as a polymer matrix, taking 2, 6-pyridine dicarbonyl dichloride and 4, 4'-methylene bis (cyclohexyl isocyanate) as spacer groups, and reacting to obtain an oligomerwith a chemical formula of PDMS-PUx-PA1-x, where x is more than 0 and less than 1; and mixing the oligomer with zinc chloride to obtain the friction layer material of which the chemical formula is PDMS-PUx-PA1-xZn. According to the embodiment of the invention, a silicon-oxygen chain of polydimethylsiloxane is used as a matrix, and the double cross-linking effect of ion complexing and hydrogen bonds is introduced through chain extension, so that the self-repairing material with high tensile property and excellent self-repairing property is synthesized.

Description

technical field [0001] The invention relates to the technical field of friction nanogenerators, in particular to a preparation method of a friction nanogenerator and a friction nanogenerator. Background technique [0002] With the advancement of technology, flexible and stretchable electronic devices such as electronic skins, electronic displays, supercapacitors, health monitoring sensors, etc. have great application prospects in wearable electronic devices. However, traditional power sources cannot meet the needs of flexible electronic devices, because traditional power sources such as lithium-ion batteries, lead-acid batteries, etc. have no stretchability, limited service life, and pollute the environment. In recent years, triboelectric nanogenerators have attracted extensive attention due to their high efficiency, stretchability, and environmental friendliness, and are expected to solve the problem of flexible power sources. [0003] However, when triboelectric nanogener...

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Problems solved by technology

[0004] The self-healing materials used for flexible electronic devices with self-healing function in the prior art have a long repair time and low repair efficiency, and even require additional external treatments such as radiation, heating, water spraying, etc. to have the repair function

Moreover, the existing self-healing materials have low tensile properties, and it is difficult to actually use them in triboelectric nanogenerators

Moreover, when verifying the self-repair function in the prior art, it is repaired by cutting off, which is not common in the application process of friction nanogenerators. In the process of use, friction nanogenerators are more commonly caused by wear or fracture caused by overstretching

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