Analysis of the Core Characteristics of Phenyl Silicone Oil
（1） Excellent thermal stability
Phenyl silicone oil has excellent thermal stability and can maintain stable performance in high temperature environments. For example, the working temperature range of methyl phenyl silicone oil IOTA-255 is between -70 ℃ and 320 ℃, and it can even maintain elasticity under low temperature conditions of -120 ℃. The physical properties of silicone oil with medium and high phenyl content remain basically unchanged after heating at 250 ℃ for thousands of hours, demonstrating excellent thermal stability. This characteristic makes it an ideal material for high-temperature environments in fields such as aerospace, electronics, and electrical appliances, such as engine insulation products and radiation resistant coatings for nuclear power.


（2） Excellent optical performance
The refractive index of phenyl silicone oil is higher than that of dimethyl silicone oil, usually 1.46, making it an ideal gloss agent. In the field of cosmetics, phenyl silicone oil can significantly improve the glossiness of the skin and hair, and increase the texture of the product. For example, in hair oil or hair care products, phenyl silicone oil can effectively improve the glossiness and silky feel of hair; In sunscreen products, it helps to achieve uniform film formation of sunscreen agents and enhances the sun protection index.


（3） Good lubrication characteristics
Phenyl silicone oil has better lubrication performance than methyl silicone oil and is suitable as a lubricant at high temperatures (such as 200 ℃). The phenyl group in its molecular structure provides better boundary lubrication performance, reducing friction and wear. However, the demolding effect of phenyl silicone oil is relatively poor and needs to be selected according to specific application scenarios.


（4） Excellent radiation resistance
Phenyl silicone oil has excellent radiation resistance and can withstand high doses of radiation without performance degradation. For example, some phenyl silicone oils can still be used after receiving radiation doses up to 2 × 10 ⁸ R at room temperature. This characteristic gives it significant advantages in applications in radiation environments such as nuclear power plants and aerospace.


（5） Good biocompatibility
Phenyl silicone oil has good compatibility with various components of cosmetics and is stable to ultraviolet radiation. It is widely used as an additive in shampoo, cosmetics, and other care products and cosmetics. Its non-toxic, non corrosive, and chemically stable characteristics make it have broad application prospects in the field of daily chemical care.