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Frequently Asked Questions about HyloCool
How does it work?
HyloCool works through evaporative cooling. It traps water in place on the surface of the metal, even while superheated. By using surfactants and mineral components, the gel sticks to the metal surface even when held upside down. The end result is that the water boils, absorbing heat from the metal surface, and preventing the heat from traveling beyond the gel. The effect lasts as long as their is water trapped in the gel.
Is it safe?
HyloCool is almost entirely water. It has no hazardous or toxic components, and has minimal safety hazards. For more information, consult the Material Safety Data Sheet.
Does it leave a residue or discolor?
HyloCool prevents the discoloration caused by the oxidation of the metal surface at high temperatures. HyloCool, being largely water, evaporates. A small crusty residue with the consistency of clay may bake on if the HyloCool boils entirely away. It can be easily removed with light abrasion, for example steel wool.
How much do I need?
Water has a very high heat density, and its phase change from liquid to gas (ie boiling) absorbs significant heat. How much HyloCool you will need for a given task will depend on how much heat you direct at the substrate's surface. The higher the temperature differential, or the longer the heat is applied, the more gel that will be required. A large object (such as an engine block) absorbs a tremendous amount of heat, so HyloCool will have only a temporary effect on its surface. A muffler is subjected to intense high heat, so near the exhaust manifold HyloCool will have only a temporary effect. For welding, HyloCool is very effective as this is intense, localized heat applied to a small surface area, and HyloCool prevents this heat from spreading.
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