Phenyl vinyl raw rubber, as a special silicone rubber material, exhibits excellent flexibility and performance stability in extremely low-temperature environments (-60℃ or even lower), making it an ideal choice for many harsh low-temperature applications.

Chemical Structure and Basic Properties
Phenyl vinyl raw rubber is a silicone rubber material whose main chain consists of alternating silicon and oxygen atoms. The silicon atoms are typically attached to two organic groups (methyl and vinyl).

Based on the phenyl content, phenyl vinyl raw rubber can be classified as:
Low-phenyl silicone rubber: Phenyl content 5%~10% (phenyl to silicon atom ratio)
Medium-phenyl silicone rubber: Phenyl content 10%~20%
High-phenyl silicone rubber: Phenyl content above 30%
Among them, low-phenyl silicone rubber exhibits the best low-temperature performance.

Low-Temperature Performance
The advantages of phenyl vinyl raw rubber in extremely low-temperature environments are mainly reflected in the following aspects:

Extremely Low Glass Transition Temperature: The glass transition temperature of low-phenyl silicone rubber can be reduced to a minimum (-115℃), allowing it to maintain flexibility even at -100℃.

With the introduction of phenyl groups, the low-temperature resistance of silicone rubber can reach -73℃.

Excellent Flexibility:
It maintains rubber elasticity within the range of -70 to -100℃, making it one of the best low-temperature rubbers.
Compared to other rubber materials, phenyl vinyl raw rubber does not harden or become brittle at lower temperatures.

Temperature Stability:
It maintains stable physical properties even in extremely low-temperature environments, without significant performance degradation.
Low-Temperature Performance Comparison with Other Materials

Compared to other common rubber materials, phenyl vinyl raw rubber exhibits significant advantages in low-temperature performance:

Material Type | Minimum Operating Temperature | Low-Temperature Performance Characteristics
Phenylene Vinyl Raw Rubber | -100℃ | Remains elastic at -100℃; glass transition temperature reaches -115℃
Natural Rubber (NR) | -60℃ | Hardens and becomes brittle below -50℃
Styrene-Butadiene Rubber (SBR) | -60℃ | Models containing 10% styrene have good cold resistance
Nitrile Butadiene Rubber (NBR) | -55℃ | Higher acrylonitrile content results in poorer cold resistance
Ethylene Propylene Rubber (EPDM) | -60℃ | Amorphous EPDM rubber exhibits good low-temperature performance

As the comparison shows, the low-temperature performance of phenyl vinyl raw rubber is significantly superior to most traditional rubber materials.

Low-Temperature Applications
Due to its excellent performance in extremely low-temperature environments, phenyl vinyl raw rubber is widely used in the following fields:

Aerospace: Used for seals and insulation materials in aircraft and spacecraft, requiring tolerance to extremely low-temperature environments at high altitudes.
**Polar Equipment:** Sealing and protective materials for polar scientific research equipment and polar transportation vehicles.
**Specialty Industries:** Sealing materials for cryogenic storage tanks and pipelines. Insulation materials for superconducting equipment.
**Electronics & Electrical Appliances:** Insulation and encapsulation materials for electronic components used in cryogenic environments.
**Summary:** Phenyl vinyl rubber, especially low-phenyl content varieties, exhibits exceptional flexibility and stability in extremely low-temperature environments such as -60°C and even lower due to its unique chemical structure. Its glass transition temperature can be as low as -115°C, and it retains its elasticity even at -100°C, a performance far exceeding most traditional rubber materials. This makes phenyl vinyl rubber an ideal choice for harsh cryogenic applications such as aerospace and polar equipment.