I would like to add a \"Silicone\" section; I hope everyone can discuss it.

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Silicones, or silicon-based compounds, refer to compounds that contain Si-O bonds and in which at least one organic group is directly attached to the silicon atom; *it is also common practice to consider those compounds in which the organic group is connected to the silicon atom through oxygen, sulfur, nitrogen, etc., as silicon-based compounds as well. Among them, polysiloxanes, which have a siloxane bond (-Si-O-Si-) as their backbone, constitute the largest group among silicone compounds; they have been the most extensively studied and widely used, accounting for over 90% of the total usage. Due to its unique structure, silicone combines the properties of both inorganic and organic materials. It possesses basic characteristics such as low surface tension, a small viscosity-temperature coefficient, high compressibility, and high gas permeability. Additionally, it offers excellent properties including resistance to extreme temperatures, electrical insulation, oxidation stability, weather resistance, flame retardancy, water repellency, corrosion resistance, being non-toxic and odorless, as well as physiological inertness. Silicone is widely used in industries such as aerospace, electronics, construction, transportation, chemicals, textiles, food, light industry, and healthcare. Its main applications include sealing, bonding, lubrication, coating, surfactant functions, demolding, defoaming, foam suppression, waterproofing, moisture protection, and inert filling. With the continuous increase in the quantity and variety of silicones, their application areas are expanding steadily, giving rise to a distinct and important product category within the field of new chemical materials. Many of these varieties are indispensable and cannot be replaced by other chemicals.