Complex fiber with high conductivity, high elasticity and stress sensing property and preparation thereof

Abstract

The invention relates to a composite fiber with high conductivity, high elasticity and stress sensing performance, and a preparation method thereof, comprising 80-99 parts of high-elastic polymer fiber and 1-20 parts of conductive particles according to weight proportion; the preparation method comprises the steps as follows: a conducting medium bath with ultrasonic vibration is added based on the spinning and forming process of the fiber or during the post-processing of the fiber; and the conductive particles with the concentration of 1-30mg/mL is uniformly dispersed in water or organic solvent by the auxiliary function of the ultrasonic to form a nano-composite conductive fiber, with the dipping time of 5-600 seconds. The conductive composite fiber has the advantages of high conductivity, difficult falling of conductive compositions, durable conductive performance, high elastic performance, soft hand-feeling and the like; the preparation process is simple, the operation is convenient and the cost is low; the composite fiber can be produced continuously in large scale; and the stress sensing element is connected with a corresponding electronic element, thus being applicable to the real-time detection on the physiological status of the human body.

Description

technical field [0001] The invention belongs to the field of composite fiber and its preparation, in particular to a composite fiber with high electrical conductivity, high elasticity and stress sensing performance and its preparation. Background technique [0002] Statistics from the National Bureau of Statistics show that my country is gradually entering an "aged" society. The aging process of the population is accelerating, various chronic diseases are spreading among young and middle-aged people, people's health awareness and health care requirements are increasing, all of which are driving the medical model to shift from symptomatic treatment to prevention A paradigm shift in diagnosis and early treatment. The extension of medical services (such as chronic patient monitoring and disease rehabilitation medicine, etc.) to community doctors and family doctors has brought about the rapid development of family and community medical monitoring instruments. Wearable wireless...

AI Technical Summary

Problems solved by technology

Although the conductive properties of these surface-coated or embedded conductive fibers are improved, the conductive coating is easy to fall off during use, and when the fibers are subjected to external stress, the continuous phase formed by conductive components such as carbon black and metal on the fiber surface is easy Irreversible rupture occurs, these conductive systems do not have high elasticity and piezoresistive properties

The conductive fiber structure design and its continuous and high-speed production methods suitable for flexible sensor sensitive elements have not been reported

Images