Preparation method of large-strain quick-response electrothermal driving artificial muscles

Abstract

The invention belongs to the technical field of material science and soft robot driving, and particularly relates to a preparation method of large-strain quick-response electrothermal driving carbon nanotube fiber artificial muscles. The invention provides a preparation method of fiber artificial muscles by mixing a variable hydrophilic-hydrophobic polymer and carbon nanotube fibers, and the method is applied to the field of intelligent robots. The preparation method comprises the steps of preparing spinnable carbon nanotube fibers, and compounding the spinnable carbon nanotube fibers with thevariable hydrophilic-hydrophobic polymer through a composite doping method to prepare quick-response composite carbon nanotube fiber artificial muscles; and controlling the stretching and retractingof the quick-response composite carbon nanotube fiber artificial muscles in an electric heating driving mode, and introducing water mist into the quick-response composite carbon nanotube fiber artificial muscles, so that the purpose of large-strain quick response is achieved.

Description

technical field [0001] The invention belongs to the technical field of material science and soft robot drive, and in particular relates to a preparation method of a large-strain rapid-response electrothermally driven carbon nanotube fiber artificial muscle. Background technique [0002] With the continuous deepening of the development of soft robots and the strong demand for intelligent mechanical systems, people have begun to devote themselves to the development of various flexible drive devices. Compared with traditional rigid actuators, flexible actuators have the advantages of high safety, high degree of freedom of movement, and strong adaptability. Artificial muscle is a flexible actuator that can deform under the excitation of external signals (light, electricity, heat, etc.). The main materials used to make artificial muscles are dielectric elastomers, shape memory alloys, nylon threads, graphene fibers, carbon nanotube fibers, etc. Among them, carbon nanotube fiber...

AI Technical Summary

Problems solved by technology

However, electrothermally driven carbon nanotube fiber artificial muscles have problems such as slow response speed due to the slow heat dissipation process.

Through research, it is found that reducing the cross-section of the artificial muscle can speed up the heat dissipation of the artificial muscle, but the mass and output energy of the artificial muscle are also reduced.

[0004] The present invention aims to improve the disadvantages of slow response and high heat dissipation of the current electrothermally driven artificial muscle, improve the output strain, response rate and other performances of the fiber artificial muscle, and proposes a method of preparing fiber artificial muscle by mixing variable hydrophilic and hydrophobic polymers with carbon nanotube fibers. The method of muscle and its application in the field of intelligent robotics

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