Yes, kinetic sand remains dry in water because of its unique hydrophobic properties that cause it to repel water. While it has a consistency that "acts like wet sand," it does not absorb external water or become saturated.
Understanding Kinetic Sand's Interaction with Water
Kinetic sand is a fascinating material known for its ability to flow and hold shapes, providing a unique tactile experience. Despite its often described "wet" or "damp" feel, this is an inherent characteristic of the sand itself, not due to moisture absorption.
Hydrophobic Properties
The secret behind kinetic sand's water-repelling behavior lies in its composition. Each grain of sand is coated with a special polymer, often silicone-based, that makes it hydrophobic. This means it actively repels water rather than absorbing it.
When kinetic sand comes into contact with water:
- It does not mix with water. Instead, the water beads up on its surface.
- It does not get soggy or dissolve. The individual sand grains maintain their structure and cohesion.
- It retains its moldable texture. Its unique "wet-like" consistency, which "will not dry out," is maintained even when submerged because it doesn't absorb the water.
Practical Behavior in Water
If you place kinetic sand in water, you'll observe distinct behaviors:
- Repulsion: The sand will clump together and move around in the water without integrating with it.
- Shape Retention: You can often still manipulate and form shapes with the sand underwater, as it retains its cohesive properties.
- Easy Retrieval: When removed from the water, the kinetic sand will quickly shed any surface water, feeling dry to the touch almost immediately and maintaining its original texture and playability. It won't feel wet or sticky, nor will it leave a residue in the water.
In essence, while the sand feels like wet sand in its natural state, it stays "dry" in the sense that it doesn't get wet from external water due to its remarkable water-repelling coating.
