Who knows how the Shenzhou VII astronaut's spacesuit is made?

Q: The teacher told us that the fat and thick clothes worn by the astronauts' uncles during their flight in space are called "spacesuits", which are the protective clothing for astronauts' normal life in space. So, what material is this magical spacesuit made of?

A: Space suits can be divided into two types according to their functions: in-cabin space suits and extravehicular space suits. When the spacecraft flies along the orbit, astronauts generally don't wear spacesuits. If there is a gas leak in the spacecraft cabin and the pressure drops suddenly, then the astronauts must put on their spacesuits in time. It can provide an artificial atmospheric environment for astronauts to return safely when the spacecraft fails. Extravehicular spacesuit is the guarantee and support system for astronauts to enter space activities, and can be regarded as the smallest manned spacecraft that can be manipulated.

At present, China's self-developed in-cabin spacesuit consists of three parts: restraint layer, airtight layer and heat dissipation layer. The limiting layer is made of high-temperature and wear-resistant materials, which is used to protect the internal structure of the clothing, make the space suit unfold according to the predetermined shape, and ensure the astronauts to wear comfortably and fit. The air-tight layer is made of nylon fabric and covered with neoprene, which has good air tightness and can prevent the clothes from leaking after being pressurized. The heat dissipation layer is connected with underwear, which sends gas to the head through many pipes, then makes them flow to the trunk of limbs, and finally gathers at the main exit, taking away the heat generated by human metabolism.