Foam can holders can provide some insulation to keep a drink cool for a short period. However, they are not as effective as specialized insulating materials designed for longer-term temperature retention.
Polystyrene foam is a good insulator. The characteristics that make polystyrene is a good insulator stems from its composition of long polymer chains and because it encapsulates regions of gas in the form of a closed cell foam. Air and gas in general are poor conductors of hear when convection is inhibited as it is in a foam. (The form used in insulation is often a closed cell foam, but that is not the only form taken by polystyrene.)
Fiberglass is an insulator. Its properties make it a good electrical insulator because it does not conduct electricity well.
To stop ice from melting you are going to have to stop heat getting to it so you need to wrap it in a good insulator. Wrapping the ice in bubble wrap or putting it in a box made from polystyrene foam would work well, the thicker the insulator the better! A waterproof insulator is good because water is quite a good conductor of heat, if you say wrapped it in straw then the water released from the first bit of ice would soak into the straw and make it a less good insulator allowing more ice to melt. You could get around this by putting the ice in a plastic bag and wrapping the bag in an insulator that wasn't waterproof. For any container the more ice you have in it at the start the longer some will last. Ice can be kept in a high quality vacuum flask for quite a long time but if you are looking to make it yourself then it would be far from simple.
when it absorbs heat really well. (i think confirm it!)Not really. If the insulation in the walls of your house absorbed heat, you would be very uncomfortable. Just the opposite really. Not transferring the heat out of the house or the cold in makes for a good insulator. Not transferring something is what the insulation does. The plastic coating on electrical wire. Glass or anything that doesn't conduct electricity is a good insulator. Anything that separates two or more things from coming into contact with each other.
Foam can be a good insulator because it contains a lot of open gas spaces interrupted by fairly thin walls. The solid portions of the foam prevent much convection (air moving around carrying heat with it). Gas tends to be a lousy heat conductor, so all those air bubbles make the foam a poor conductor of heat - most of the conducted heat has to to travel through the limited solid structure of the foam (not much cross section for conduction).
A nonmetal would make a good insulator.
You should use something with a low density like foam...
Polystyrene foam is a good insulator. The characteristics that make polystyrene is a good insulator stems from its composition of long polymer chains and because it encapsulates regions of gas in the form of a closed cell foam. Air and gas in general are poor conductors of hear when convection is inhibited as it is in a foam. (The form used in insulation is often a closed cell foam, but that is not the only form taken by polystyrene.)
Fiberglass is an insulator. Its properties make it a good electrical insulator because it does not conduct electricity well.
You should use something with a low density like foam...
rubber
a poor thermal conductor.
i think it does because it sure doesn't make a good conductor.
a poor thermal conductor.
wool holds lot of air.air being bad conductor of heat make the wool a good conductor of heat.
No. Because it is a good conductor.
Usually nonmetals. Rubber, plastic, wood, cloth, paper, Styrofoam, tinfoil (to reflect the heat.)The most common insulator for electricity is plastic.