Store-bought Kinetic Sand is primarily made from fine sand and polydimethylsiloxane (dimethicone), a type of silicone oil. This combination gives it its unique properties.
Here's a more detailed breakdown:
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Fine Sand: This forms the bulk of the Kinetic Sand. The sand used is typically very fine and clean to ensure a smooth texture.
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Polydimethylsiloxane (Dimethicone): This silicone oil is the magic ingredient that gives Kinetic Sand its non-Newtonian fluid properties. This means its viscosity (resistance to flow) changes under stress. When squeezed or molded, it becomes more solid-like, but when left undisturbed, it flows and moves like a liquid. It acts as a binding agent, coating the sand particles and allowing them to stick together while still flowing freely.
Why this combination works:
The dimethicone coats each sand particle, reducing friction between them. This allows the sand to flow easily. When pressure is applied, the particles grip each other, creating a temporary solid structure.
In summary: Store-bought Kinetic Sand gets its unique, moldable, and flowing characteristics from the specific combination of fine sand and polydimethylsiloxane.
