Photoresponse shape-memory self-repairing composite material and preparation method, repairing method and application thereof

Abstract

The invention relates to a photoresponse shape-memory self-repairing composite material and a preparation method, a repairing method and application thereof and belongs to the field of functional polymer materials. Polydopamine is compounded into a polymer material matrix with shape-memory self-repairing property, and can be applied to the fields such as a protective coating, a self-repairing device, a light driver and photothermal therapy. According to the specific method, the polydopamine has an excellent photothermal effect, and is capable of effectively absorbing light from a near-infrared light band to a visible light band, and the polymer matrix can be quickly heated by introducing a little of polydopamine, so that a characteristic temperature of shape memory or a reversible transition temperature of a dynamic key is achieved, thereby providing a simple, effective, fixed-point and quantitative energy supply for repairing of the material.

Description

technical field [0001] The invention relates to a photoresponsive shape memory self-repairing composite material, a preparation method, a repairing method and an application thereof, and belongs to the field of functional polymer materials. Background technique [0002] Materials are easily damaged by some external factors (mechanical, chemical, thermal, ultraviolet radiation, etc.) greatly reduced and shortened service life. However, common self-healing polymer materials often require external heating to repair, usually when the whole material or a period of time is heated up, and local treatment cannot be achieved, which causes inconvenience to practical applications. Therefore, it is very necessary to prepare a polymer that can achieve self-healing property with simple local treatment to solve the problem that cannot be locally thermally repaired in practical applications. Contents of the invention [0003] The object of the present invention is the preparation and ap...

AI Technical Summary

Problems solved by technology

[0002] Materials are easily damaged by some external factors (mechanical, chemical, thermal, ultraviolet radiation, etc.) Greatly reduced, shortened service life

However, common self-healing polymer materials often require external heating to repair, usually when the entire material or the temperature is raised during the period, and local treatment cannot be achieved, which causes inconvenience to practical applications.

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