Actuating material and bidirectional bending actuator and preparation method thereof

Abstract

The invention discloses an actuation material, a bidirectional bending actuator and a preparation method of the bidirectional bending actuator. The actuation material comprises a first material layer and a second material layer which are arranged in an overlap manner, wherein an adhesive layer is arranged between the first material layer and the second material layer; the humidity expansion coefficient of the first material layer is greater than that of the second material layer; the thermal expansion coefficient of the first material layer is smaller than that of the second material layer; the first material layer is a carbon-based cellulose composite material layer; and the second material layer is a polymer material layer. The actuator comprises the actuation material and at least two electrodes, wherein the two electrodes are arranged at an internal and are electrically connected with the actuation material; and the two electrodes are fixed on the surface of the first material layer of the actuation material at an interval. The actuator is capable of responding to multiple types of stimulation, can be driven through light, electricity and humidity, and can achieve bidirectional bending deformation.

Description

technical field [0001] The invention relates to the field of actuating materials, in particular to an actuating material, a bidirectional bending actuator capable of responding to various stimuli and a preparation method thereof. Background technique [0002] The working principle of the actuator is to convert other energy into mechanical energy. There are three ways to achieve this conversion: through electrostatic field into electrostatic force, that is, electrostatic drive; through electromagnetic field into magnetic force, that is, magnetic drive; using materials Thermal expansion or other thermal properties effect the conversion of energy, ie thermal actuation. [0003] The thermally driven actuator overcomes the shortcomings of the small deformation of the electrostatically driven and magnetically driven actuators, and the actuator structure can produce corresponding deformation as long as a certain amount of heat energy can be obtained. In addition, the thermal drivi...

AI Technical Summary

Problems solved by technology

However, there are still some limitations. For example, the structure of the actuator is relatively simple, and most of them are laminated with double-layer materials. Therefore, the actuator can only bend to the side with a small amount of thermal expansion, and the bending direction is single, which is difficult to meet Today's Diverse Demands for Actuators

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