Space conditions have a unique set of theories, and there are many restrictions on the technology that brings humans to space. Of course, rigorous space exploration is usually the driving force for many new technological innovations. Insulating layers away from the atmosphere, in this case, the temperature in the shadow can be as low as -200°F, and as high as 200°F when facing the sun. Combining it with a vacuum environment and adding extremely sensitive electronic and optical devices to it, every design consideration is crucial to the process of sending objects into the hot spring bath, and the challenge is very difficult. However, past successes and failures will only increase people's desire for the vision of the stars. In an expensive attempt to send objects into space, every design consideration is very important. One of these considerations (it may not seem important at first, but if it is not fully considered, it may lead to catastrophic consequences) is the choice of various composite materials, which are used for bonding, insulation, damping, conductivity, etc. multiple uses. They are usually next to or in direct contact with the main electro-optical equipment. Generally, any material used in space must have the following characteristics: ·Good resistance to radiation degradation ·Excellent ozone resistance ·Excellent thermal cycle resistance Materials that meet some of these requirements include silicone rubber, epoxy resin, polyurethane, etc., especially phenyl silicone rubber used in aerospace materials has obvious advantages because it can withstand extreme temperatures in space and can operate at very low temperatures. It maintains good flexibility at low temperatures (other materials will harden and crack), and its elastomer properties can suppress the adverse effects of launch vibration. And the performance changes encountered in space flight, such as temperature changes will cause a surface shrinkage or hinder the propagation of electromagnetic waves and subatomic particles, and phenyl silicone rubber has good resistance to high and low temperatures will solve this problem well. Finally, although radiation in space can cause changes in the properties of space materials similar to thermal aging, some special silicone materials, such as phenyl silicone rubber, have excellent radiation resistance and are suitable for use under radiation conditions. And still maintain good mechanical properties.