High-transparency self-repairing self-adhesion conductive elastic material and preparation method thereof

Abstract

The invention discloses a high-transparency self-repairing self-adhesion conductive elastic material and a preparation method thereof, and belongs to the technical field of high polymer materials. The preparation method comprises the following steps: firstly, mixing a hydrogen bond acceptor and a hydrogen bond donor to prepare a polymerizable eutectic solvent, then adding a photoinitiator, uniformly stirring to obtain a prepolymer solution of a mixed liquid, and finally, polymerizing the prepared prepolymer solution through ultraviolet irradiation to obtain the high-transparency self-repairing self-adhesion conductive elastomer. Wherein the hydrogen bond donor comprises an acrylic acid monomer and an imidazole monomer. According to the preparation method, cross-linking agents of other components do not need to be additionally added, and the conductive elastomer which has the light transmittance of 90% or above, can be rapidly self-repaired and is easily adhered to ceramics, metal and skin can be prepared only by adding the photoinitiator and performing ultraviolet irradiation. The high-transparency self-repairing self-adhesion conductive elastomer prepared by the invention is non-toxic, has high mechanical strength and adhesion performance, and can be applied to the fields of flexible electronic devices, adhesive materials and the like.

Description

technical field [0001] The invention relates to a highly transparent self-repairing self-adhesive conductive elastic material and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] The demand for flexible electronics is increasing day by day, and the research on flexible electronics has grown exponentially in recent years. Huang Wei, an academician of the Chinese Academy of Sciences, once mentioned that flexible electronic devices should be developed in the direction of people-oriented, greener technology, wider application and richer functions. Therefore, conductive elastomers are also expected to be able to integrate multiple functional properties: green, easy to manufacture, high conductivity, self-healing performance, high transparency, etc. However, the current research on ionic conductors still fails to meet the above requirements at the same time. The reasons are: first, the research based on hydrogel io...

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Problems solved by technology

However, the current research on ionic conductors still fails to meet the above requirements at the same time. The reasons are: first, the research based on hydrogel ionic conductors often faces problems such as low long-term stability, poor low temperature resistance, and insufficient mechanical properties.

Second, the anhydrous ionically conductive elastomer will be a good substitute for hydrogel ion conductors due to its antifreeze and anti-drying properties, and most of the anhydrous ionically conductive elastomers will also cause Elastomers are opaque, affecting their application

Third, most synthetic networks involve long reaction steps and the addition of toxic crosslinkers, and the fabrication process is complicated and time-consuming

Fourth, it is difficult for conductive elastomers to achieve stimulus-free self-healing due to the difficulty of localizing dynamic bonds in the liquid-free polymer network.

At present, there are few reports on polymerizable deep eutectic solvents, and it is still difficult for conductive elastomers prepared from deep eutectic solvents to satisfy the above-mentioned multiple functional properties at the same time.

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