As an important organosilicon material, the anti-aging performance of ethyl silicone oil is a key indicator for evaluating its application value. The following analysis will comprehensively examine its testing methods, long-term stability data, influencing factors, and comparison with other silicone oils.

Anti-aging Performance Testing Methods
The anti-aging performance of ethyl silicone oil is evaluated using a variety of professional testing methods:
Oxidation Resistance Testing: The standard oxygen bomb method is used to determine its oxidation resistance and assess its stability under oxidizing conditions.

Thermal Stability Testing: Thermogravimetric analysis (TGA) is used to test its thermal stability and analyze its performance retention at high temperatures.
Acid Value Testing:The acid value is determined by titration to reflect whether the silicone oil has oxidized and the degree of oxidation.
Flash Point Testing:The flash point (80°C for ethyl silicone oil) is determined using the closed-cup method to assess its safe use performance.
Long-Term Aging Test:Accelerated aging tests are conducted to simulate performance changes under long-term use conditions.
Ethyl silicone oil exhibits excellent long-term stability:
Temperature Stability: Operating temperature range -60~150℃, low temperature viscosity coefficient, and stable performance.
Chemical Stability:Functionality:Low volatility, low surface tension, chemically stable, and not easily decomposed to produce harmful substances.
Service Life: Maintains long-term stable performance under normal use conditions, and is not prone to significant aging.
Environmental Adaptability:Strong weather resistance, maintaining stable performance under various environmental conditions.
Influencing Factors and Aging Mechanisms: The anti-aging performance of ethyl silicone oil is affected by multiple factors:
Environmental Factors:Ultraviolet radiation accelerates molecular chain breakage. Moisture-catalyzed hydrolysis leads to performance degradation. Temperature changes affect molecular structure stability.
Chemical Factors: Acid-base contact damages molecular structure. Oxidation reactions lead to increased acid value. Partial discharge and ozone corrosion.
Usage Conditions: Mechanical stress causes molecular chain breakage. Electric field accelerates material degradation.
The aging mechanism mainly manifests as molecular chain breakage and oxidative degradation processes, following a kinetic law with an activation energy of (8-10) × 10^4 J/mol. Performance Comparison with Other Silicone Oils
Comparison of Anti-aging Properties of Ethyl Silicone Oil with Other Types of Silicone Oils:
Performance Indicators: Ethyl Silicone Oil, Methyl Silicone Oil, Vinyl Silicone Oil
Temperature Resistance: -60~150℃, -50~200℃, -60~180℃
Chemical Stability: Excellent, Good, Excellent
UV Resistance: Good, Fair, Excellent
Oxidation Resistance: Excellent, Good, Excellent
Long-term Stability: Excellent, Good, Excellent
Ethyl silicone oil is superior to methyl silicone oil in chemical stability and temperature resistance, and comparable to vinyl silicone oil in UV resistance.

Application Recommendations
Based on the anti-aging properties of ethyl silicone oil, it is recommended to prioritize its use in the following areas:
Electrical Insulation: As an insulating medium resistant to temperature, arc, and corona discharge.
Precision Instruments: Used as a lubricating medium for long-term stable operation of instrument oils, hydraulic oils, etc.
Outdoor Applications: Applications requiring weather resistance and UV resistance.

Long-term Use: Applications requiring long-term stable material performance.
Ethyl silicone oil, due to its excellent anti-aging properties, is an ideal choice for many applications requiring long-term stability.