The ability to melt and die several times, this can be considered as an advantage of the polymer, but in the meantime, it is a disadvantage is that the polymer is often not resistant to high temperatures and in each round. melting the polymer that hardens back. Often worse than the original with treasure. Implicitly assume that only a change in the visco-elastic material that conforms with the only change from the glassy state at low temperatures to the state will have to change tires in practice some relaxation.
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