Regarding the oxidation resistance and thermal stability of phenyl vinyl raw rubber, the following are some detailed studies and analyses:

1. Oxidation resistance
Oxidation resistance refers to the ability of a material to resist oxidation when exposed to oxygen or other oxidants. For phenyl vinyl raw rubber, its oxidation resistance is usually good, which is mainly due to the specific functional groups and chemical properties in its molecular structure.

Functional group influence: The molecular chain of phenyl vinyl raw rubber contains phenyl and vinyl functional groups, which can improve the oxidation resistance of raw rubber. Phenyl functional groups can increase the rigidity of the molecular chain, thereby slowing down the oxidation reaction; vinyl functional groups can increase the cross-linking density of raw rubber, further enhancing its oxidation resistance.
Stable chemical properties: The chemical properties of phenyl vinyl raw rubber are relatively stable and are not easy to react with oxidants such as oxygen. This chemical stability helps to improve its oxidation resistance and extend its service life.

2. Thermal stability
Thermal stability refers to the ability of a material to maintain its stable physical and chemical properties under high temperature conditions. For phenyl vinyl rubber, its thermal stability is usually high, which is mainly due to its special molecular structure and thermal properties.

Stable molecular structure: The molecular chain structure of phenyl vinyl rubber is relatively stable and can maintain its integrity in high temperature environment. This stability of molecular structure helps to improve its thermal stability and prevent performance degradation caused by high temperature.
High thermal decomposition temperature: The thermal decomposition temperature of phenyl vinyl rubber is usually high, which means that it can maintain its performance stable at higher temperatures. For example, in the synthesis of POSS products containing phenyl and vinyl bifunctional groups, the larger the component containing phenyl functional groups in the cage-shaped POSS, the better its thermal stability. Specifically, when the mass loss is 5%, its thermal decomposition temperature can reach 471.1℃. This high thermal decomposition temperature makes phenyl vinyl rubber have better application prospects in high temperature environment.
Excellent ablation resistance: Phenyl vinyl rubber also shows excellent ablation resistance. In the combustion test, the ablation rate of phenyl silicone rubber (silicone rubber containing phenyl vinyl functional groups) is usually low, which helps to improve its service life and safety in high temperature environment.

3. Influencing factors and improvement measures
Although phenyl vinyl raw rubber has good antioxidant and thermal stability, it may still be affected by some factors in practical applications. In order to improve its antioxidant and thermal stability, the following measures can be taken:

Optimize the formula: By adjusting the formula of phenyl vinyl raw rubber, such as increasing the content of antioxidants, thermal stabilizers and other additives, its antioxidant and thermal stability can be further improved.
Improve processing technology: Optimize the processing technology of phenyl vinyl raw rubber, such as controlling processing temperature, time and other parameters, it can reduce its thermal oxidation degradation during processing, thereby improving its antioxidant and thermal stability.
Select high-performance raw materials: Select high-performance raw materials and additives, such as high-purity monomers, high-quality cross-linking agents, etc., can further improve the antioxidant and thermal stability of phenyl vinyl raw rubber.

In summary, phenyl vinyl raw rubber has good antioxidant and thermal stability, which is due to its special molecular structure and chemical properties. In practical applications, its antioxidant and thermal stability can be further improved by optimizing the formula, improving the processing technology and selecting high-performance raw materials.