The durability test of phenyl vinyl silicone (phenyl silicone rubber for short) in low temperature environment mainly focuses on its ability to maintain physical properties under extreme low temperature conditions, including elasticity, hardness, tensile strength, elongation at break, etc. The following is a detailed analysis of the test process:

I. Test purpose
Evaluate the durability of phenyl vinyl silicone in low temperature environment, including its cold resistance, elasticity retention ability, mechanical property stability, etc., to ensure its reliability and long-term service life in low temperature applications.

II. Test method
Sample preparation:
Select representative phenyl vinyl silicone samples to ensure that the samples are flawless and free of contamination.
Cut or prepare the samples into appropriate shapes and sizes according to the test requirements.
Cryogenic environment simulation:
Use a low temperature test chamber or similar equipment to adjust the temperature to a predetermined low temperature level (such as -70℃, -100℃, etc.).
Place the sample in a low temperature environment for a certain period of time (such as 24 hours, 48 hours or longer) to simulate actual use conditions.
Performance test:
In a low temperature environment, directly measure the physical properties of the sample, such as elasticity, hardness, etc. This can be done by using specific testing instruments (such as hardness testers, tensile testers, etc.).
After taking the sample out of the low temperature environment, restore it to room temperature and measure its performance changes to evaluate its low temperature recovery ability.
Comparative analysis:
Compare the test results in the low temperature environment with the test results at room temperature to analyze the cause and extent of the performance changes.
If possible, it can also be compared with phenyl vinyl silicone with different phenyl contents to understand the effect of phenyl content on low temperature durability.

III. Expected results
Elasticity retention:
Phenyl vinyl silicone should be able to maintain good elasticity in a low temperature environment without obvious hardening or embrittlement.
Stable mechanical properties:
Mechanical properties such as tensile strength and elongation at break should remain stable or slightly decrease in a low temperature environment, but still within an acceptable range.
Recovery ability:
After the sample is taken out of the low temperature environment, it should be able to quickly recover to the performance level at room temperature without permanent deformation or performance loss.

IV. Precautions
Temperature control:
The temperature of the low temperature environment should be precisely controlled to avoid the influence of temperature fluctuations on the test results.
Sample protection:
During the test, the sample should be protected from external contamination or damage to ensure the accuracy of the test results.
Testing standards:
The test should follow relevant national or industry standards to ensure the comparability and reliability of the test results.
Data analysis:
The test results are analyzed in detail to find out the laws and reasons for the performance changes, and provide a scientific basis for improving and optimizing the low-temperature durability of phenyl vinyl silicone.

Phenyl vinyl silicone has good durability and elasticity retention in low-temperature environments, and its performance changes are affected by many factors such as phenyl content, test temperature and time. Through scientific testing methods and strict data analysis, the durability of phenyl vinyl silicone in low-temperature environments can be comprehensively evaluated, providing a strong guarantee for its reliability and long-term service life in practical applications.