Phenyl compound has recently made a major technological breakthrough in the fields of deep space exploration and nuclear engineering. This specialty sealing material, prepared through precise regulation of phenyl content and optimization of composite formulations, has become the material of choice for critical spacecraft sealing systems and special protection in nuclear power plants due to its exceptional resistance to extreme low temperatures, strong radiation, and environmental stability. It provides a reliable material foundation for humanity’s exploration of extreme cosmic environments and the safe utilization of nuclear energy.

Research data shows that by regulating the phenyl content within a specific range of 25%-40%, phenyl compound maintains stable sealing performance and elasticity within an ultra-wide temperature range from -196℃ (liquid nitrogen temperature) to 280℃, with a low-temperature compression set rate below 12%. After testing in a simulated space combined radiation environment (total dose 1×10⁷ Gy), the material retains over 85% of its mechanical properties. Simultaneously, its extremely low vacuum outgassing rate (total mass loss <0.1%) meets the stringent requirements of spacecraft for clean space environments.

In the field of deep space exploration, the material has been successfully applied in critical components of the thermal control system sealing for China's first Mars rover, “Zhurong,” and lunar soil encapsulation equipment. On-orbit data confirms that related sealing components have performed entirely as designed during months of extreme diurnal temperature cycling on Mars (-120℃ to +20℃) and under high-intensity cosmic ray exposure. In the nuclear engineering sector, its excellent resistance to neutron and gamma radiation makes it a core sealing material for pressure vessel penetrations in new-generation nuclear reactors and equipment for spent fuel reprocessing, ensuring long-term safe operation in extreme radiation environments.

With the steady advancement of China's manned lunar landing and deep space exploration programs, and the rapid development of fourth-generation advanced nuclear energy systems, unprecedented demands are being placed on the long-life reliability of materials under the coupled effects of multiple extreme factors (ultra-low temperature, strong radiation, atomic oxygen, high vacuum). In this context, the advantage of “performance designability” of phenyl compound becomes prominent. Through nanocomposite filling and molecular structure synergistic enhancement, new-generation materials possess special functions such as resistance to high-speed space debris impact and high-temperature heat flux shock while maintaining excellent bulk properties. Authoritative industry experts remark that the maturity and serialized development of this material signify a critical leap for China from “catching up” to “running abreast” and even “leading” in the field of specialty sealing materials for extreme environments. It is an indispensable strategic key material supporting future major scientific and engineering projects.