Phenyl vinyl raw rubber, as a special silicone rubber material, exhibits excellent performance not only at low temperatures but also at high temperatures, making it of significant value for applications in the aerospace field. The following analyzes its high-temperature performance and its significance in the aerospace industry from multiple perspectives.

High-Temperature Thermal Stability of Phenyl Vinyl Raw Rubber
Phenyl vinyl raw rubber possesses excellent high-temperature resistance characteristics, primarily reflected in the following aspects:

Wide Temperature Range: Long-term operating temperature up to 180℃, maintaining elasticity even after weeks or longer at 200℃.
Instantaneous temperature resistance exceeding 300℃, capable of withstanding short-term high-temperature shocks.
Combined with its low-temperature performance, its operating temperature range reaches -100℃ to 250℃, demonstrating extremely wide temperature adaptability.

Influence of Phenyl Content on Performance:
Low-phenyl silicone rubber (5%~10% phenyl): Exhibits optimal low-temperature performance while maintaining good high-temperature stability.

Medium-phenyl silicone rubber (20%~40% phenyl): Exhibits excellent... Its flame-retardant properties allow it to self-extinguish after ignition.

High-phenyl silicone rubber (over 30% phenyl): Excellent radiation resistance, able to withstand 1×10⁸ roentgens of gamma rays.

High-temperature stability mechanism: The silicon-oxygen backbone structure imparts excellent thermal stability to the material. Phenyl side chains increase molecular chain rigidity, improving high-temperature resistance. Vinyl side chains improve vulcanization crosslinking density, enhancing the retention of mechanical properties at high temperatures.

High-temperature performance requirements for materials in the aerospace field: Aerospace materials face harsh high-temperature environments, placing special demands on their performance:

Extreme temperature conditions:
Aero-engine operating temperatures can reach over 600℃, and components such as turbine blades need to withstand even higher temperatures. Aircraft surfaces can generate 200℃ heat due to aerodynamic heating during high-speed flight. High Temperatures Above ℃
Equipment areas such as electronic equipment bays also require materials to operate stably for extended periods at 80-150℃.

Key Performance Indicators:
High Temperature Strength: Maintaining sufficient mechanical strength at high temperatures
Oxidation Resistance: Resisting high-temperature oxidation and thermal degradation
Creep Resistance: Maintaining dimensional stability under sustained high temperatures and stress
Fatigue Resistance: Withstanding thermal stress caused by temperature cycling

Aerospace Material Standards:
Aerospace materials must pass rigorous high-temperature aging tests and meet airworthiness certification requirements, such as FAR Part 25 regulations on material flame retardancy. Military aviation has even stricter MIL standards.

Applications of Phenylvinyl Rubber in the Aerospace Field
Due to its excellent high-temperature performance, phenylvinyl rubber has a wide range of applications in the aerospace field. Applications:

Engine Systems:
Engine Seals: Withstand high-temperature combustion gases and hydraulic fluids
Fuel System Seals: Resistant to both aviation fuel and high temperatures
High-Temperature Spring Elements: Maintain elasticity at high temperatures

Airframe Structure:
Door Seals: Adapt to temperature variations between high-altitude low temperatures and ground high temperatures
Electronics Cabin Seals: Provide electromagnetic shielding and environmental isolation at high temperatures
Hydraulic System Seals: Withstand high-temperature hydraulic oil and pressure cycles

Special Applications:
Auxiliary materials for spacecraft thermal protection systems
Ablative components for missile and rocket engines
Insulation and encapsulation materials for avionics equipment

Performance Comparison with Other High-Temperature Aviation Materials
Phenylene Vinyl Rubber has unique advantages compared to traditional aviation materials:
Material Type Maximum Operating Temperature, High-Temperature Performance Characteristics, Aerospace Applications, Comparison with Phenylvinyl Raw Rubber

Phenylvinyl Raw Rubber: 250℃, Stable over a wide temperature range, good flexibility, suitable for sealing components and insulation materials, excellent overall performance.

High-Temperature Alloys: 600-1000℃, High strength, oxidation resistance, suitable for turbine blades and combustion chambers, higher temperature resistance but difficult to process.

Polyimide: 300-400℃, High insulation, radiation resistance, suitable for circuit boards and insulation layers, higher temperature resistance but brittleness.

Fluororubber: 200-250℃, Resistant to chemical corrosion, suitable for fuel system seals, comparable temperature resistance but poor low-temperature performance.

Ethylene Propylene Rubber: 150℃, Resistant to steam and aging, suitable for door and window sealing strips. Lower Temperature Resistance but Lower Cost

Important to the Aviation Industry
Phenylene vinyl rubber's high-temperature performance brings multifaceted value to the aviation industry:

Enhancing Flight Safety: High-temperature stability ensures reliable operation of critical components in extreme environments. Excellent flame-retardant properties reduce fire risk. Wide temperature range adaptability ensures stable performance throughout the entire flight cycle.

Promoting Lightweight Design: Significantly reduces weight compared to metal materials. Reduces fuel consumption, increases range and payload capacity. Facilitates more optimized aerodynamic designs.

Extending Service Life: Anti-aging properties reduce maintenance frequency. Resistance to environmental stress cracking improves component durability. Reduces total life cycle costs.

Supporting Technological Innovation: Provides a material basis for the design of new aircraft. Meets the thermal protection requirements of future hypersonic aircraft. Promotes the localization of aviation materials.

In summary, phenyl vinyl rubber plays an irreplaceable role in the aviation field due to its excellent high-temperature thermal stability. Its wide temperature range adaptability, high-temperature mechanical property retention rate, and special functional characteristics make it an ideal material for critical components such as aero engines, airframe structures, and electronic systems. As the aerospace industry moves towards higher performance and more demanding environments, the application prospects of specialty polymer materials such as phenyl vinyl raw rubber will become even broader. In the future, through molecular structure optimization and composite material development, their high-temperature performance is expected to be further improved, providing stronger material support for the advancement of aerospace technology.