A wearable smart device is a hardware terminal that combines multimedia, sensor and wireless communication technologies with our daily wear to realize user interaction, life entertainment, human body monitoring and other functions. It has the following two characteristics: First, it is a device that combines software and hardware that can realize data collection, storage and calculation; second, it embeds sensor technology, wireless communication and other technologies into some flexible devices that people wear in their daily lives , Strengthening the interaction between people and equipment.
For example, the smart bandage developed by a company can embed a variety of sensors into the fabric, which can detect the number of bacteria, humidity and oxygen concentration, etc., and record them in the computer to provide more real-time data for patients and provide more insights for treatment plans. In addition, "smart T-shirts" can assist medical staff to detect physiological indicators such as heartbeat, body temperature, blood pressure, and respiration of patients. The same can also be used for physical condition detection and real-time human-computer information interaction functions of pilots, astronauts, and athletes.
For the application of the new technology of conductive fiber electronic textile, people have been continuously developing and iterating since the 1970s. With the deepening of research, different types of conductive fibers have been gradually developed, which play an important role in various fields. .
The earliest conductive fiber that came out was the stainless steel fiber Brunsmet produced by the Brunse ick company in the United States. It is a fiber made of stainless steel wire repeatedly passed through a mold and finely stretched. Later, some people mixed metal powder into polymer slices and further spun into conductive fibers. At the same time, there were also methods of weaving conductive fibers by depositing porous metal powder in the fibers.
However, these two methods have obvious deficiencies. The conductive fiber filaments made by mixing metal powder will clog the spinneret hole during weaving. If porous metal powder is used for deposition, not only the manufacturing process is more complicated, but the most important There will be some damage to the performance of the fiber filament.
With people's further research, a polymer with a conductive polymer material as a conductive agent has been proposed. Although this conductive polymer improves the electrical conductivity of the fiber axis, it can conduct electricity without adding other materials, but this completely composed of Conductive fibers made from conductive polymers are not suitable for most textile applications and their usefulness is limited.
The high polymer of the conductive component and the fiber-forming polymer are combined and spun to prepare the composite conductive fiber. At present, the technology of the conductive fiber is different, and the industries that were first exported and applied are also different.
Taking Dalian Yibang SYSCOM conductive fiber as an example (a more advanced manufacturer of conductive fiber in Europe), its unique technology can uniformly and firmly coat metal on different non-metallic substrates to form conductive fiber, which should be proposed by the US Air Force Laboratory According to the design requirements, the development of a variety of ultra-light metal fiber filaments has been completed. There is a Agsis® conductive fiber suitable for traditional textile equipment used in wearable smart devices. It combines the flexibility of traditional nylon fibers with the conductivity and silver of silver. The combination of antimicrobial properties provides a viable solution for demanding wearable designs. It can be embroidered, knitted, sewn or woven without design restrictions, and it also outperforms similar products with better durability and higher conductivity.
Smart conductive fibers can also be used in defense and military industry, semiconductors, electronics manufacturing, energy industry, automobile industry, sports equipment, etc. Conductive textiles made of conductive fibers, in which the conductive fibers can send electrical signals from input devices to appropriate The output device has a good application prospect.
