What aspects of applied chemistry will be used in aerospace industry?

Applied chemistry in aerospace industry is mainly reflected in the following aspects:

1. ** Spacecraft manufacturing * *: Chemistry is the basis of spacecraft manufacturing, and the materials of spacecraft must be able to withstand extreme temperatures and pressures, and also have sufficient strength and stability. Chemical synthesis and chemical reaction are the basis of making these materials. For example, alloys and composites commonly used in spacecraft are made by chemical synthesis.

2. ** Spacecraft propulsion system * *: Chemistry is the core of the spacecraft propulsion system, and the spacecraft propulsion system relies on chemical reactions to generate energy. In the propulsion system, the chemical reaction will produce a lot of gas, which will push the spacecraft forward. Therefore, the efficiency and safety of chemical reactions are very important for spacecraft propulsion.

3. ** Spacecraft life cycle maintenance * *: Spacecraft will be affected by cosmic radiation and microgravity in space, which will lead to the failure of spacecraft materials and equipment. Therefore, chemical reaction plays an important role in the maintenance and repair of spacecraft. For example, chemical reactions can repair the coatings and components of spacecraft and extend the service life of spacecraft.

4. ** Aerospace adhesives * *: As an indispensable new material in the aerospace industry, adhesives are widely used in launch vehicles, satellites and spacecraft. Because aerospace products need to go through the launching environment, space orbit environment, re-enter the environment and withstand high temperature, ablation test, rapid change of space temperature, high vacuum, ultra-low temperature, thermal cycle, ultraviolet rays, charged particles and atomic oxygen and other environmental factors, there are some special requirements for adhesive sealants, such as instant high temperature resistance and ablation resistance, ultra-low temperature resistance, special media resistance and space environment resistance.