There are significant differences in structure and properties between side hydrogen-containing silicone oils and end based silicone oils, which lead to their differences in application fields. Here's a breakdown of the differences:
Structural difference
Side hydrogen-containing silicone oil:
The molecular structure contains Si-O-Si bonds, and the silicon atoms are arranged alternately with the oxygen atoms.
Side groups containing methyl groups (CH3-) and silyl groups (SiH3-), which are located on the side chain of the molecule rather than at the end.
End-base silicone oil (taking end-epoxy silicone oil as an example) :
It is a linear polydimethylsiloxane that contains specific functional groups, such as epoxy groups, at both ends.
The end-group functional group determines the reactivity and application field of end-group silicone oil.
Qualitative difference
Side hydrogen-containing silicone oil:
It has a lower viscosity, and the lubrication effect is better for high-speed rotating mechanical equipment.
Good heat transfer effect, not easy to produce carbon deposition.
As the curing agent of silicone resin and rubber, high performance silicone adhesives, release agents and rubber products can be prepared.
End-base silicone oil (taking end-epoxy silicone oil as an example) :
Because end groups contain active epoxy groups, they are often designed as reactive modifiers of organic resins.
It is an important intermediate material for block polymers.
It has the characteristics of improving electrical performance, reducing internal stress and good demoulding effect.
Application field differences
Side hydrogen-containing silicone oil:
It is mainly used for the preparation of high-performance silicone adhesives, release agents and rubber products.
It plays a lubricating role in the glass forming process to prevent defects in the finished product.
It can also be used as waterproofing agent, fabric finishing agent, etc.
End-base silicone oil (taking end-epoxy silicone oil as an example) :
It is mainly used as a reactive modifier of organic resin to improve the electrical and mechanical properties of materials.
It can be used to prepare block polymers and broaden the application range of materials.
It is also widely used in textile, leather, paint and other industries.
In summary, there are significant differences in structure, properties and application fields between end-hydrogen-containing silicone oil and end-base silicone oil. The choice of silicone oil depends on the specific application requirements and material performance requirements.
