1. Polyorganosiloxane
Polyorganosiloxane is the most important silicone polymer, and most of the silicone products currently on the market belong to this form. Chain polyorganosiloxanes with a unit structure of R2SiO are often referred to as silicones.
Polyorganosiloxanes can be roughly divided into long-chain structures and complex cross-linked structures. Silicone oil and silicone rubber belong to the former, and silicone paint belongs to the latter. In addition, polyorganosiloxanes can also be classified according to the organic groups on silicon. In most cases, they can be called methyl polyorganosiloxane (unit structure Me2SiO), phenyl polyorganosiloxane (unit Structure Ph2SiO, PhSiO3/2) and hydrogen-containing polyorganosiloxane (unit structure MeHSiO), etc.
2. Polyorganoalkane (arylene) siloxane
Polymers containing phenylene (alkylene) groups in the siloxane segment have a thermal stability higher than that of polydimethylsiloxane by more than 100°C, which is of special significance.
3. Polysilylsulfane
4. Polysilazane
5. A carbon-based polymer containing silicon in the pendant group
6. Polysilane