At 23:10 on December 3, 2020, after about 19 hours of lunar surface work, the lunar exploration project Chang'e-5 probe successfully completed the automatic sampling of the lunar surface, and the ascender successfully lifted off with the lunar “local products” and embarked on its return flight journey of. Before completing the sampling mission and taking off, a "textile version" five-star red flag carried by the lander was successfully deployed on the lunar surface. Unlike the flags on the "Chang'e-3", "Chang'e-4" and Yutu lunar rover, which are sprayed, the "Chang'e-5" flag is a real aramid fiber composite fabric flag. This marks the first successful display of the textile flag on the moon in the history of China's spaceflight, which is the first fabric flag under harsh environmental conditions without temperature control.
The national flag is mainly made of YTTH Aramid Fiber Technology Group`s high-performance aramid fiber materials. It has been developed by WH Textile University for 8 years and has undergone countless experiments to prepare high-quality lunar display flag fabrics. The application of aramid material enables the national flag to effectively overcome the extreme environment of high and low temperature cycles in space, thereby ensuring that the national flag can withstand the harsh environment of the moon surface without fading, cross-coloring, and deformation.
Aramid fiber is one of the key materials developed in China’s strategic emerging industries. YTTH is a pioneer in China`s high-end aramid business. Since 2004, it has developed high-performance aramid series products with independent intellectual property rights, filling the industry Blank, the products are used in aerospace, modern transportation, safety protection and other fields, which are of great significance to social and economic development and the creation of a better life for mankind.