Phenyl silicone and ordinary silicone exhibit significant differences in radiation resistance, primarily due to differences in their molecular structures. The following is a detailed comparison of the radiation resistance of the two materials:

Radiation Resistance of Phenyl Silicone
Phenyl silicone significantly improves the material's radiation resistance by introducing phenyl groups into the polysiloxane backbone:

High-phenyl silicone rubber: When the phenyl content reaches 30% or more, it is called high-phenyl silicone rubber and exhibits excellent radiation resistance, effectively resisting high-energy radiation such as gamma rays and electron beams.

Radiation Stability Mechanism: The phenyl structure increases the rigidity of the molecular chain, enabling the material to maintain structural stability and functional integrity in radiation environments. Experiments have shown that phenyl silicone rubber can withstand long-term use in high-radiation environments such as nuclear power plants and medical equipment without significant performance degradation.

UV Resistance: The phenyl structure also significantly improves the material's UV resistance, effectively resisting aging phenomena such as yellowing and embrittlement caused by long-term exposure to sunlight.

Applications: Particularly suitable for applications involving long-term radiation exposure, such as nuclear power plant cable sheathing, internal components of medical radiotherapy equipment, and aerospace materials.

Basic Radiation Resistance: Ordinary silicone rubber exhibits a certain degree of resistance to general radiation and maintains good performance stability in low-dose, standard radiation environments.

Limitations in High-Radiation Environments: The performance of ordinary silicone rubber deteriorates rapidly in high-dose radiation environments, making it unsuitable for long-term use. While ordinary rubber degrades when exposed to high-energy radiation, phenyl silicone rubber is resistant to gamma rays and other radiation.

Temperature Range: Ordinary silicone rubber typically has a temperature resistance range of -60°C to +200°C. While this performance is excellent, it lacks the extreme environmental adaptability of phenyl silicone rubber.

Application Limitations: Primarily used in non-high-radiation environments such as general industry and electronics. It is not suitable for specialized applications such as nuclear power and medical radiotherapy.

Key Performance Comparison
Performance Index:             Phenyl Silicone                                                                 Ordinary Silicone
Radiation Resistance:       Excellent (resistant to gamma rays and electron beams)      Fair (suitable for low-dose radiation only)
Phenyl Content:               5-30% or higher                                                             Phenyl-Free
Applicable Temperature:   -70°C to 300°C                                                               -60°C to 200°C
UV Resistance:                 Excellent                                                                        Fair
Stability in High Radiation Environments: Long-term stability,                                    may degrade rapidly
Typical Applications: Nuclear power plants, medical radiotherapy equipment,              general industry, electronics