Surface Tension Properties
Ethyl silicone oil possesses unique surface tension properties, which underlie its superior performance:

Surface Tension Value: Ethyl silicone oil has a relatively low surface tension of 17.3 dyne/cm.
Basic Properties:
Low volatility
Non-toxic
Non-corrosive
Aging-resistant
Adjustable to varying viscosities

Chemical Structure: The polydiethylsiloxane structure imparts low surface tension.

Other Related Properties:
Low vapor pressure
Low volatility
High compressibility
Non-corrosive to metals

Lubricity Principle
The lubricating properties of ethyl silicone oil stem from its unique molecular structure and interaction mechanism:

Lubrication Mechanism
Intermolecular Forces:
Low intermolecular forces result in excellent sliding properties. Molecules slide easily relative to each other, reducing frictional resistance.

Adsorption:
Strongly adheres to contacting surfaces, forming a stable lubricating film.

Friction-Reducing Properties:
Effectively reduces friction between contacting surfaces, reducing wear and energy loss.

Application Features
Precision Instrument Lubrication: Particularly suitable for the lubrication needs of precision instruments and meters.
Stability: Maintains lubrication performance over a wide temperature range.
Compatibility: Compatible with a wide range of materials without causing corrosion or degradation.
Spreadability: Low surface tension enables better spreading on contact surfaces, forming a uniform lubricating film.
Wettability: Low surface tension improves wetting, effectively covering irregular surfaces.
Synergistic Effect: Low surface tension and lubricating molecular structure work together to achieve excellent friction reduction.

Applications: Due to its surface tension and lubricating properties, ethyl silicone oil is widely used in:
Precision instrument lubricants
Hydraulic system oils
Specialty lubricants
Mold release agents
Defoaming agents
Medical device lubrication
Personal care products
This unique combination of properties makes it irreplaceable in applications requiring high precision and stability.