The effect of low temperature on the surface properties of phenyl vinyl silicone (often referred to as phenyl silicone rubber) is mainly reflected in the following aspects:

1. Elasticity and flexibility
Maintaining elasticity: Phenyl vinyl silicone can maintain good elasticity at low temperatures. In particular, low-phenyl silicone rubber and medium-phenyl silicone rubber can still maintain the elasticity of rubber in the low temperature range of -70℃ to -100℃, which is the best low-temperature performance among all rubbers.
Flexibility: As the temperature decreases, many rubber materials will become hard and brittle, but phenyl vinyl silicone can maintain good flexibility at low temperatures due to its unique molecular structure and the introduction of phenyl, and is not prone to embrittlement.

2. Compression cold resistance coefficient
High compression cold resistance coefficient: Phenyl vinyl silicone has a high compression cold resistance coefficient at low temperatures, which means that it can quickly restore its original shape after being compressed and maintain good mechanical properties.

3. Aging resistance
Excellent aging resistance: Phenyl vinyl silicone not only has excellent low-temperature performance, but also has good aging resistance. When used for a long time in a low-temperature environment, its performance changes are relatively small and it can maintain a long service life.

4. Electrical insulation performance
Stable electrical insulation performance: The electrical insulation performance of phenyl vinyl silicone is relatively stable at low temperatures and will not drop significantly due to temperature reduction. This makes it have a wide range of application prospects in low-temperature environments where electrical insulation is required.

5. Surface morphology and structure
Surface morphology: At low temperatures, the surface of phenyl vinyl silicone may not show obvious cracks or deformation, maintaining its original smoothness and integrity.
Molecular structure stability: The introduction of phenyl destroys the regularity of the dimethylsiloxane structure and reduces the crystallization temperature of the polymer, thereby improving the molecular structure stability of phenyl vinyl silicone at low temperatures.

6. Performance in practical applications
Sealing performance: In low-temperature environments, the sealing performance of phenyl vinyl silicone is still reliable, which can ensure the tightness and stability of seals or connection parts.

Shock absorption performance: In low-temperature environments where shock absorption is required, phenyl vinyl silicone can exert its good shock absorption performance to protect equipment or structures from vibration and impact caused by low temperatures.

In summary, the influence of low temperature on the surface performance of phenyl vinyl silicone is mainly reflected in its elasticity, flexibility, compression cold resistance coefficient, aging resistance, electrical insulation performance, and surface morphology and structural stability. These excellent properties make phenyl vinyl silicone rubber widely used in low temperature environments.