The basic structure of the silicone oil

Structural characteristic 1:

chemical bonds Siloxilicone bond (Si-O-Si): cold resistance, compressibility, low vapor pressure, physiological ininertia / heat resistance, flame resistance, oxidation resistance, corona resistance, arc resistance, irradiation resistance, dielectric resistance, weather resistance.

Silicon carbon bond (Si-C): cold resistance, compressibility, low vapor pressure, physiological inert / surface activity, hydrophobic, release, defosion.
Structure feature two: four cell structures

Structure characteristic three: silicon methyl group is indispensable

Methyl silicon carbon bond is the most stable silicon carbon bond; The presence of silicone methyl gives silicone oil unique properties; All kinds of silicone oil are derivatives of methyl silicone oil; The derivative silicone oil is named after groups other than the methyl groups.

Silicon oil classification

 Inert silicone oil: in use generally does not participate in chemical reactions, more is the use of the physical properties of silicone oil, rather than chemical properties. Such as: methyl silicone oil, phenyl silicone oil, polyether silicone oil, long alkyl silicone oil, trifluoropropyl silicone oil, ethyl silicone oil, etc.

Reactive silicone oil: has a clear reactive group, usually involved in chemical reactions in use.
Such as: hydroxysilicone oil, vinyl silicone oil, hydrogen silicone oil, amino silicone oil, sulfhydryl silicone oil. Silicone oil is a special kind of oil liquid with silicon carbon bond and silicon silicon bond. Silicon methyl provides surface activity, hydrophobic, and release; silicon structure provides stability (inert) and excellent electrical properties.

Common silicone oil introduction
methylsilicone oil
Definition: All the organic groups in the molecular structure are methyl groups.
Features: good thermal stability; good dielectric; hydrophobicity; viscosity and defamescence. The most important commercial, silicone oil (201, DC200, KF 96, TSF451).
Preparation method: Prepare by using the equilibrium reaction.
Characterization means: the viscosity is often used to represent the polymerization of silicone oil, the viscosity is used to distinguish products, the continuous synthesis of viscosity methyl silicone oil below 50mPa.s.
Preparation materials: 50mPa.s Commercial methylsilicone oil, hexamethyldisiloxane (head agent), macroporous acid cationic resin.
flash system.
Preparation device: a reaction column filled with resin, a vacuum flash system.
Brief process: Mix the methyl silicone oil and the parting agent in proportion through the reaction column, and flash to get the finished silicone oil.

containing hydrogen silicone oil.

Reactive silicone oil containing the Si-H bond (KF 99, TSF484)
Two common structural units:

Preparation by acid balance method:

Main uses: silicon hydrogen addition raw material, silicone rubber additives, waterproof treatment agent.

Amino silicone oil
Definition: a reactive silicone oil containing a hydrocarbon amino group.
Common structural units:

Main uses: fabric finishing, mold release agent, cosmetics, organic modification.

Vinyl silicone oil

Common structural units:

Preparation of the equilibrium reaction:

Use: Use vinyl for base glue and organic modification.

Hydroxysilicon oil
Definition: polysiloxane.
High-molecular-weight synthesis method:

Method for low molecular weight synthesis:

Commercial hydroxyl silicone oil:
107 adhesive: high molecular weight hydroxysilicone oil (viscosity of 1000mPa.s above), as rubber based rubber (including phenyl group of 108 adhesive).
Low molecular hydroxyl oil: hydroxyl content of more than 6%, structured control agent, fluorinated hydroxyl oil for structured control of fluorosilicone rubber.
Line type: viscosity 100mPa.s~1000mPa.s, often used to synthesize modified silicone oil.

Phenyl silicone oil

Use of phenyl silicone oil: High phenyl content of silicone oil is used in high heat and irradiation conditions. Low phenyl content of silicone oil low temperature performance is good, used for cold resistance requirements. The refractive rate of phenyl silicone oil is very wide from 1.41 to 1.58, which is suitable for applications with the refractive rate requirements.
Special phenyl silicone oil:

Polyether silicone oil

 Overview: by the performance difference of polyether chain segment and polyether chain segment, through chemical bonds, hydrophilic polyether chain segment gives its hydrophilic, polydimethyl siloxane chain segment gives low surface tension, and the formation of all kinds of surface activity, the focus of polyethylene silicone oil research and development is application screening, general synthesis method, convenient structure change, in theory can synthesize infinite variety of polyether silicone oil, from the structure cannot fully determine its application performance, application screening is the focus of the work.
Use of polyether silicone oil: polyurethane foam foaming agent (L580), coating leveling agent (BYK 3 prefix), surfactant (L-77), fabric finishing agent (softener), water-based release agent, antistatic agent, defoaming agent (self-emulsifying type).