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

A technology of self-healing materials and oligomers, applied in the direction of friction generators, etc., can solve the problems of low tensile properties, long repair time of self-healing materials, low repair efficiency, etc., and achieve high tensile properties and excellent self-healing properties Effect

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A technology of self-healing materials and oligomers, applied in the direction of friction generators, etc., can solve the problems of low tensile properties, long repair time of self-healing materials, low repair efficiency, etc., and achieve high tensile properties and excellent self-healing properties Effect

CN112358620AActive Publication Date: 2021-02-12SUZHOU UNIV

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[0045] figure 1 A schematic structural view showing a method for preparing a self-healing material according to an embodiment of the present invention. Such as figure 1 Shown, this preparation method comprises:

[0046]Step S100, using bis(3-aminopropyl)-terminated poly(dimethylsiloxane) as a polymer matrix, and 2,6-pyridinedicarbonyl dichloride and 4,4'-methylenebis( Cyclohexyl isocyanate) as a spacer, the reaction obtained chemical formula is PDMS-PU x -PA 1-x The oligomer of , wherein, 0<x<1;

[0047] Step S200, mixing the oligomer and zinc chloride to obtain the chemical formula PDMS-PU x -PA 1-x - The first self-healing material of Zn.

[0048] figure 2 A molecular formula structure diagram of the first self-healing material according to an embodiment of the present invention is shown. image 3 A molecular formula structure diagram of part of the first self-healing material according to an embodiment of the present invention is shown. Depend on figure 2 with ...

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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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Application Information

Patent Timeline

12 Feb 2021

Publication

CN112358620A

IPC: C08G77/455; C08G77/458; C08G18/75; C08G18/61; C08G69/42; C08J3/24; C08L83/10; C08K3/16; C08K3/08; H02N1/04

CPC: C08G77/455; C08G77/458; C08G18/758; C08G18/61; C08G69/42; C08J3/243; C08K3/08; C08K3/16

Inventors: 孙旭辉; 文震