The application of heat-resistant silicone coatings in the aerospace field is mainly reflected in three aspects: extreme environment protection, key component protection and special functional requirements. Its core value lies in solving the problem of material failure under harsh working conditions such as high temperature, radiation and corrosion:

1. Extreme environment protection application
Rocket engine thermal protection
Used for engine casing and nozzle coating, it can withstand the impact of high-temperature airflow above 800℃ to prevent high-temperature ablation and deformation. For example, the sealing layer of the Long March series rocket engine adopts phenyl silicone rubber material, which has a short-term temperature resistance of 1000℃.
Special formulas (such as adding aluminum powder filler) can be increased to 700℃ for long-term stable protection. The coating adhesion needs to pass the military standard test (GJB 8501-2015) of 16 times of thermal shock at 400℃ without peeling.
‌Space environment adaptability‌
Satellite shells and solar wing panel coatings need to withstand alternating temperatures of -200℃ to 200℃ and strong ultraviolet radiation. Silicone-modified coatings can maintain more than 85% gloss after 20 years of outdoor use.

Silicone-based coatings absorb more than 90% of ultraviolet rays to prevent solar panels from failing due to cold welding effects.

2. Protection of key aircraft components
‌Aircraft high temperature area protection
The engine tail nozzle and turbine blades use silicone high temperature resistant paint, which works in an environment of 500-600℃ for a long time. The coating's anti-thermal oxidation aging performance increases the life of the equipment.

The application case of Tesla Model Y wheel hub shows that low-temperature curing silicone coatings reduce the maintenance cost of the entire life cycle by 40%.

The aircraft skin uses fluorosilicone modified coatings to resist salt spray corrosion and wet heat aging, meeting the military standard 2000-hour salt spray test requirements.
The coating of the aircraft carrier deck needs to be both oil-resistant and impact-resistant. The fluorosilicone rubber system can prevent hydraulic oil penetration and withstand mechanical stress above 2.5MPa.

3. Special functional requirements
Insulation safety guarantee
The insulation coating of the electrical compartment cable maintains a volume resistivity of 1×10¹⁴Ω·cm at 85℃/85% humidity, and the residual SiO₂ after high-temperature damage is still insulating.

‌Lightweight and reliable sealing
The spacecraft porthole sealing material uses an ultra-thin silicone coating (thickness 0.08-0.15mm), which has passed the -80℃ low-temperature flexibility test to ensure airtightness without weight loss.