(Polystyrene or thermocol)
2007-02-01 17:38:35 · 3 answers · asked by deostroll 3 in Science & Mathematics ➔ Physics
Entrapped air...? You sure? So if you dip a piece of polystyrene in water, the air that is entrapped will rise and escape...?
2007-02-01 17:49:45 · update #1
There is a lot of entrapped air inside. Air is a poor conductor. Bulk polysterene is also a poor conductor. So, the combination of polystyrene and air makes for a good thermal insulation.
2007-02-01 17:44:22 · answer #1 · answered by Swamy 7 · 1⤊ 0⤋
Polystyrene has voids filled with trapped air which give it low thermal conductivity. This makes it ideal as a construction material and it is therefore sometimes used in structural insulated panel building systems. It is also used as insulation in building structures, as molded packing material for cushioning fragile equipment inside boxes, as packing "peanuts", as non-weight-bearing architectural structures (such as pillars), and also in crafts and model building, particularly architectural models. Foamed between two sheets of paper, it makes a more-uniform substitute for corrugated cardboard.
2007-02-07 20:25:51 · answer #2 · answered by Jordan B 2 · 0⤊ 0⤋
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2007-02-01 17:53:32 · answer #3 · answered by tushar 1 · 0⤊ 1⤋