Phenyl silicone rubber, as a special polymer material, exhibits excellent reliability in oxidizing gas environments, mainly due to its unique molecular structure and chemical properties. Its performance is analyzed in detail from several aspects below:

I. Corrosion Resistance
Phenyl silicone rubber has excellent corrosion resistance in oxidizing gas environments (such as oxygen, ozone, etc.):

Molecular Structure Advantages: The main chain is composed of alternating silicon and oxygen atoms, with organic groups attached to the silicon atoms. This semi-inorganic, semi-organic structure combines the advantages of both inorganic and organic materials.

Oxidation Resistance: Low-phenyl silicone rubber (phenyl content 5-15%) maintains elasticity at -70~-100℃; medium-phenyl silicone rubber (phenyl content 15-25%) exhibits ablation resistance; high-phenyl silicone rubber (phenyl content above 30%)... Excellent radiation resistance

Ozone resistance: Particularly suitable for the aerospace field, capable of withstanding the extreme temperatures and ozone environment of space.

II. Mechanical Properties
In oxidizing gas environments, phenyl silicone rubber maintains good mechanical properties:

Temperature adaptability: Extremely wide operating temperature range (-100～350℃), maintaining elasticity even after thousands of hours at 250℃ or hundreds of hours of hot air aging at 300℃.

Strength characteristics: Introducing phenyl groups into the molecular chain can increase the mechanical strength from 110MPa to 170-180MPa while maintaining good heat resistance.

Tensive properties **I. **Maintains good elasticity and high tensile strength under both high and low temperatures:**

III. **Aging Characteristics and Service Life:** Phenyl silicone rubber exhibits excellent resistance to aging in oxidizing environments:
**Aging Resistance:** It possesses excellent resistance to ozone and oxygen aging; the vulcanizate shows no significant performance change after several years of outdoor exposure.
**Service Life:** It can operate continuously at 180℃ and retains elasticity for weeks or longer even at temperatures slightly above 200℃.
**Special Environmental Performance:** Medium-phenyl silicone rubber exhibits self-extinguishing properties, while high-phenyl silicone rubber maintains its performance even under radiation conditions.

IV. **Practical Applications:** Application Cases
Typical applications of phenyl silicone rubber in oxidizing environments include:
Aerospace: Used as a heat-resistant coating for the inner walls of rocket nozzles, capable of withstanding instantaneous temperatures of thousands of degrees Celsius; as a sealing material for spacecraft, capable of withstanding extreme temperatures and radiation.

Electronics and Electrical: Used as an insulating material in the electronics, electrical, and optics industries; its excellent insulating properties make it widely used in wires, cables, and insulating materials.

Industrial: Used in high-friction environments in automotive and machinery manufacturing, capable of maintaining stable performance for extended periods under high-speed motion and high friction.

V. Performance Comparison of Different Types of Phenyl Silicone Rubber
Type Phenyl Content | Main Properties | Applicable Temperature Range | Typical Applications

Low Phenyl 5-15% | Optimal low temperature resistance (-70~-100℃) | -100~200℃ | Sealing components for extremely low temperature environments

Medium Phenyl 15-25% | Ablation resistance, self-extinguishing properties | -70~250℃ | Aerospace ablation-resistant components

High Phenyl 30% and above | Excellent radiation resistance | -50~300℃ | Nuclear industry, space radiation environment

In summary, phenyl silicone rubber exhibits excellent reliability in oxidizing gas environments. Its corrosion resistance, stable mechanical properties, and anti-aging properties make it an ideal material choice for high-end fields such as aerospace and electronics.