What are Silicones? - American Chemistry Council

“Silicones” are a generic term referring to a class of synthetic polymers that are based on a framework of alternating silicon and oxygen (siloxane) bonds with at least one organic group attached to the silicon atom via a direct carbon-silicon bond.

Silicones are high-performance polymers that can take a variety of physical forms – from solids to water-thin liquids, semi-viscous pastes, and oils. Silicones can be made to resist moisture, chemicals, heat, cold, and ultraviolet radiation. They are noted for their ability to function in conditions that would destroy conventional materials.

Silicones are used in nearly every industry and are in thousands of products and many critical applications in medicine, energy, transport, technology, and engineering.

Silicones as Game Changers

Silicones also are used in products that produce renewable energy and in energy saving applications; everything from wind turbines, solar panels, LEDs and green tires rely on silicone technology.

Silicones are used in a wide range of health and medical applications. They serve as coatings for hypodermic needles, provide high oxygen permeability in hydrogel contact lenses, and are used in tubing in a wide range of medical devices including insulin pumps. They are also used in prosthetics devices due to their hypoallergenic properties and wide range of physical properties.

Silicones are used as sealants for windows, as caulking for bridges and bathroom tiles, and as coatings to protect facades and historical monuments.

In automotive applications, silicone products increase the efficiency and lifespan of vital components such as airbags, while in railway locomotives they provide motor insulation and lubricants for bearings. Silicones also play a critical role in electric vehicles, encapsulating the entire battery pack for stabilization, vibration protection, heat dissipation and water and dust proofing.

In electronics, silicones are used as coolants in transformers, protective encapsulating material for semiconductors, and foam-control agents in the manufacture of many types of products.

In the household, silicones are used as antifoams in detergents, which enable lower washing temperatures, thereby saving energy. Silicones spread easily and protect surfaces, making them a common component for polishes or cleaning agents for household surfaces.

In our kitchens and throughout our homes, silicones are known for their versatility and convenience. Silicone kitchenware is durable, easy to clean, lightweight and stain resistant.