The low-temperature application of phenyl vinyl silicone (often referred to as phenyl silicone rubber) in military equipment is mainly reflected in its excellent low-temperature resistance. This material reduces its crystallization temperature and glass transition temperature by introducing phenyl groups into the main chain of dimethyl silicone rubber, thereby significantly improving its low-temperature application range. The following are the specific manifestations of low-temperature application of phenyl vinyl silicone in military equipment:

1. Low-temperature resistance
Low-temperature elasticity: Phenyl silicone rubber can still maintain good elasticity at extremely low temperatures, which is the basis for its wide application in military equipment. Especially in cold winters or high altitudes, this material can ensure that the sealing, shock absorption and flexibility of the equipment are not affected.
Temperature range: The low-temperature resistance of phenyl silicone rubber can usually reach -70℃ or even lower (such as the hardening temperature of low-phenyl silicone rubber can be reduced to -115℃), enabling it to work stably in extreme low-temperature environments.

2. Application fields
Aerospace:
Military aircraft and spacecraft need to use low-temperature resistant sealing materials when crossing high-cold areas or performing high-altitude missions. Phenyl silicone rubber is widely used in aircraft fuel oil, lubricating oil seals, contact parts and sensor materials due to its excellent low temperature resistance.
Ground equipment:
Ground military equipment such as tanks and armored vehicles need to ensure the sealing and flexibility of each component in cold environments. Phenyl silicone rubber can be used to make sealing rings, oil seals, diaphragms and other components to ensure that the equipment can still operate normally at low temperatures.
Weapons and equipment:
In some special environments, such as polar warfare or high mountain warfare, the sealing and low temperature resistance of weapons and equipment are crucial. Phenyl silicone rubber can be used to make seals and shock-absorbing components for these weapons to improve the reliability and durability of the equipment.

3. Advantages and characteristics
Radiation resistance: Some phenyl silicone rubbers with high phenyl content also have good radiation resistance, which is particularly important for military equipment used in nuclear environments or high radiation areas.
Ablation resistance: Phenyl silicone rubber also has certain ablation resistance, which can resist the erosion of flames and high temperatures to a certain extent, and improve the survivability of equipment in fire or high temperature environments.

4. Conclusion
In summary, phenyl vinyl silicone has been widely used in military equipment due to its excellent low temperature resistance, good sealing and radiation resistance. Especially in extreme low temperature environments, this material can ensure the stable operation and reliability of equipment, providing a strong guarantee for the success of military operations.