Preparation method of self-repairing material and application of self-repairing material

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 (3-aminopropyl)-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 oligomer with 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 first self-repairing material of which the chemical formula is PDMS-PUx-PA1-x-Zn. 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 field of self-repairing materials, in particular to a method for preparing a self-repairing material and an application of the self-repairing material. 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 triboelectr...

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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

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