Silicone oil is a general term for a class of polysiloxane compounds, which can be divided into non-ionic silicone oil, cationic silicone oil, and anionic silicone oil. Among them, non-ionic silicone oil includes different varieties, such as methyl silicone oil, hydroxy silicone oil, epoxy silicone oil, hydrogen silicone oil, polyether silicone oil, etc. Cationic silicone oil includes amino silicone oil and polyether amino silicone oil, etc. Anionic silicone oil can be divided into carboxyl silicone oil and carboxylated polyether silicone oil. Different types of silicone oil often show different structural characteristics and application fields.

1. Characteristics and application of non-ionic silicone oil

High-viscosity methyl silicone oil and hydroxy silicone oil: There is no polar functional group in their structure. They are usually used as smoothing components, such as smoothing agents, daily chemical shampoos and conditioners in the textile industry. Epoxy silicone oil with lower viscosity is divided into two types: end group and side chain. The epoxy silicone oil used in large quantities in industry is mainly end group type, with a molecular weight of 4000-20000 and an epoxy content of about 0.01%~0.05%, which is used for the synthesis of block polyether amino silicone oil. Side chain type hydrogen silicone oil is mainly used as a cross-linking component of organic silicone smoothing additives such as knitwear and wool sweaters, and can also be used as a synthetic raw material for side chain polyether silicone oil; end group type hydrogen silicone oil is often used as a raw material for the reaction of silane hydrogen addition to synthesize various polyether silicone oils and other compounds. Polyether silicone oil refers to a silicone oil with a polyether segment connected to the main chain or side chain, so it has good hydrophilicity, hygroscopicity and antistatic properties, and is widely used in daily chemicals, personal skin care products, defoamers, softeners and other fields.


2. Characteristics and application of cationic silicone oil
The side chain or terminal carbon of polysiloxane is connected with aliphatic or aromatic amino groups. The presence of amino groups in the molecular structure can increase the molecular polarity and emulsification properties, which is conducive to the preparation of aminosilicon into transparent silicone microemulsion with fine particle size and good permeability; amino groups are converted into ammonium ions after neutralization, which makes silicone oil/silicone emulsion charged, which is conducive to the stability of silicone emulsion and increases the adsorption of polysiloxane on the fiber surface, so that silicone oil has excellent soft and lubricated feel.


3. Characteristics and application of anionic silicone oil
Terminal vinyl/carboxylhydroxy co-modified silicone oil: The configuration of silicone-modified acrylic resin emulsion and exterior wall paint can increase the smoothness of the coating surface and improve the dust and anti-fouling performance of the coating.