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jimu news reporter xiang yifan

correspondent jiang yongjie and zheng ting

"the five-star red flag next to me is exactly the same as the one that chang'e 6 unfurled on the back of the moon, so this flag is also the flag closest to the moon." at 8 pm on september 1, cctv-1 broadcast the 2024 "first lesson of the new school year", where many scientists, archaeologists, and chinese athletes presented a cultural feast that combines history and modernity, tradition and innovation to young people. in the section that reveals amazing new achievements in aerospace, academician ding lieyun of huazhong university of science and technology and academician xu weilin of wuhan textile university introduced the latest progress and unlimited possibilities of space technology.

after academician xu weilin walked onto the "stage", he asked several students to touch the national flag on display. "the national flag feels very strong" and "this national flag is too thick"... the students expressed their feelings one after another. academician xu weilin said that the ultraviolet rays on the moon are very strong, and the environment on the moon is even worse, with a high temperature of 150 degrees celsius and a low temperature of minus 150 degrees celsius. by studying the composition of the lunar soil, the team selected basalt stone materials, melted it at high temperature, and then drew it into fibers.

after explaining the characteristics of the moon, academician xu weilin picked up basalt fiber and introduced to the students that although basalt fiber looks like a single thread, it is actually composed of 80 5.5-micron filaments. the fineness of each thread is almost one-tenth of a hair. to wind such a small thread, and to control the temperature at which the stone melts into the thread, many problems seriously affect its performance. the team spent half a year and finally overcame it and made the thinnest single thread in the world and china.

academician xu weilin said that basalt fiber has strong mechanical properties. the team worked with the factory for one or two years and failed many times before they made this very fine and special structured fabric.

talking about the future application of basalt fiber, academician xu weilin said that the biggest advantage of this basalt material is that it is an inorganic material, resistant to acid and alkali, high temperature and corrosion. in the future, we can use it to make clothes for people who land on the moon and build houses.

(source: jimu news)

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