It is learned from the Suzhou Nano Institute of the Chinese Academy of Sciences that researchers from the Institute have recently developed a "super insulation material". Compared with ordinary thermal insulation materials, the new materials can exert thermal insulation performance for a long time at extremely low and high temperatures. It is expected to replace microfibers and even subvert down, and become the main development direction of the next generation of warm fiber. Related research results have recently been published in "ACS Nano".
This new type of "super insulation material" is an aerogel made from Kevlar fibers from DuPont of the United States. Researchers have introduced that Kevlar fibers can be made into nanofiber dispersions, and the dispersions can be made into hydrogel fibers by wet spinning. Finally, special drying techniques are used to dewater, and this Kraft can be prepared relatively easily Pull the aerogel.
Experimental tests show that the new material can play a role of cold protection and heat insulation in the range of minus 196 degrees Celsius to 300 degrees Celsius. In the environment of minus 60 degrees Celsius, its thermal insulation capacity is 2.8 times that of cotton fiber. Compared with the two best artificial insulation fiber materials on the market, hollow fiber and ultra-fine fiber, the thermal insulation performance of Kevlar aerogel fiber is also significantly better.