long chian alkyl silicone oil

Long-chain alkyl silicone oil is an organosilicon material classified as a modified silicone oil. By incorporating long-chain alkyl and phenyl groups into the siloxane backbone or side chains, it acquires unique physicochemical properties. It surpasses conventional silicone oils in terms ofhigh-temperature stability, lubricity, and hydrophobicity, making it a crucial material in high-end industrial manufacturing, new energy applications, medical fields, and personal care products.

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Silicone oil

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Molecular Formula

1.Product Description

Long-chain alkyl silicone oil is an organosilicon material classified as a modified silicone oil. By incorporating long-chain alkyl and phenyl groups into the siloxane backbone or side chains, it acquires unique physicochemical properties. It surpasses conventional silicone oils in terms of high-temperature stability, lubricity, and hydrophobicity, making it a crucial material in high-end industrial manufacturing, new energy applications, medical fields, and personal care products.

2. Performance Characteristics

Enhanced Hydrophobicity: The long-chain alkyl groups significantly improve water repellency, making it suitable for waterproofing, anti-fouling, or anti-adhesion applications.
Excellent Lubricity: Reduces friction coefficient, ideal for use as a lubricant or release agent.
Thermal Stability: Maintains chemical inertness even at high temperatures, making it suitable for high-temperature environments such as automotive engine components.
Surface Activity: Modifies surface tension, applicable in formulations for coatings, adhesives, and cosmetics.
Compatibility: Exhibits improved compatibility with certain polymers, such as plastics and rubber, enhancing material properties when used as an additive.

Equivalent Brands

Wacker (GM 196)
Shin-Etsu (KF-7235)
Runhe Materials (RH8207G)
Tangze Chemical (TZ1085, TZ1088)

3.Comparison with Conventional Silicone Oil

Property	Conventional Silicone Oil	Long-Chain Alkyl Silicone Oil
Hydrophobicity	Moderate	Significantly enhanced (due to long-chain alkyl groups)
Lubricity	Good	Superior, with a lower friction coefficient
Thermal Stability	Good (~200°C)	Excellent (~400°C)
Surface Tension	Relatively high	Adjustable to lower values
Application Fields	General lubrication, basic coatings	High-end industries, electronics, medical applications

4.Technical Specifications

Item	Specification
Chemical Name	Long-Chain Alkyl Silicone Oil
Appearance	Colorless, transparent liquid
Viscosity (25°C), mm²/s	1700-2200
Hydrogen Content, %	<0.005%
Volatile Content (150°C, 3h), %	≤1%
Refractive Index (25°C)	1.4600~1.4700
Absolute Molecular Weight	65,000
Thermal Stability (N₂ Atmosphere)	0~430°C
Density (25°C), g/cm³	0.92~0.96

5.Applications

(1) Industrial Manufacturing

Release Agent: Prevents workpieces from sticking to molds in die casting and injection molding, especially suitable for aluminum die casting (e.g., electric vehicle components). Ideal for aluminum, zinc, and magnesium casting, providing a smooth surface finish, preventing carbon buildup in molds, and allowing for secondary processing such as printing, painting, or electroplating.
Lubricant: Provides long-lasting lubrication for high-temperature mechanical components such as engine bearings and gears. Enhances the high- and low-temperature resistance of mineral oils, making it suitable for specialty lubricants, small machinery, and plastic gears. Offers excellent lubrication for aluminum surfaces.
Coating Additive: Improves the weather resistance, waterproofing, and anti-fouling properties of coatings (e.g., automotive coatings, architectural paints). Used in coatings and inks to provide both defoaming and leveling functions, with excellent low-temperature stability (-40°C without freezing), and does not interfere with post-processing.

(2) Electronics & New Energy

Battery Electrolyte Additive: Enhances the electrochemical stability and cycle life of lithium batteries.
Photovoltaic Materials: Used in solar cell encapsulation materials to improve weather resistance and light transmission.
Motor Insulation Material: Provides excellent insulation and thermal management in electric vehicle motors.

(3) Personal Care

Cosmetics: Acts as a skin feel modifier, giving skincare products a smooth, non-greasy texture. Used in lipsticks, hair conditioners, and other personal care products to enhance smoothness, spreadability, and UV resistance. Its compatibility with mineral oils improves the moisturizing effect of skincare formulations.

6.Safety

Before handling, read the Material Safety Data Sheet and container label for safe use, physical and health hazard information.

7.Packaging, Storage, and Transportation

This product is packaged in plastic drums or iron drums, with available sizes ranging from 5KG to 200KG.
It can be transported as a non-hazardous chemical.

Precautions:

Avoid contact with acids, alkalis, or heavy metals.
Store in a sealed container in a cool, dry place.

Shelf Life:
The product has a shelf life of 2 years. If expired, it can be re-tested according to the standard, and if it meets the requirements, it can still be used.

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