Carbon nanocomposite fiber based multi-stimulus response driver of core-shell structure

Abstract

The invention relates to the technical field of software drivers, in particular to a carbon nanocomposite fiber based multi-stimulus response driver of a core-shell structure. Organic fibers with highstrength are adopted, the organic fibers are twisted and prepared into a yarn with a certain twist, the organic yarn is used as a core, a carbon nano film with a certain twist angle is wound througha concentric shaft coating device, and silicone rubber is infiltrated at the film to serve as an outer shell. The carbon nanocomposite fiber of the core-shell structure is twisted to form the yarn ofa spiral structure, the carbon nanotube composite yarn of the spiral structure is used as an electrically conductive fiber material, mechanical vibration output with high deformation and high frequency can be continuously generated after a certain amount of current passes through the fiber material, and the mechanical vibration output can be used as an efficient driver. In addition, being capableof responding quickly and efficiently to external electrothermal stimuli, the multi-stimulus response driver provided by the invention can also be used for driving by solvents and thermal stimuli, canbe used in different occasions according to needs, and has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of soft actuators, in particular to a variety of stimulus-responsive actuators with a core-shell structure based on carbon nanocomposite fibers. Background technique [0002] Soft actuators are a nascent field that can convert electrical, thermal, electrochemical, or chemical forms of energy into mechanical energy for deformation such as stretching, contraction, torsion, rotation, or bending. They have broad application prospects in exoskeletons, prosthetic devices, flexible manipulators, etc. Soft actuators are made of flexible materials such as electroactive polymers, silica gel, shape memory alloys, shape memory polymers, hydrogels, and carbon nanotubes that can withstand large strains. Among them, shape memory alloy fibers have been used as drivers since the 1870s. Thermally driven or electrothermally driven shape memory alloy fibers show good driving performance, and their power density reaches 930J / kg...

AI Technical Summary

Problems solved by technology

Most of these types of drives are accompanied by large hysteresis effects, low cycle life, low output energy, and limited deformation.

The electrically driven organic fiber driver, by coating the conductive copper wire on the nylon fiber, applies a current to it, so that the nylon fiber is subjected to the electrothermal effect and shrinks and deforms, and its energy density and power density are significantly improved, but its heat loss is high. poor frequency performance

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