Nowadays, with the development of traffic、industry and cities, noise has become a kind of environment pollution. It has been considered as the third serious pollution after water and air pollution, so the prevention and control of noise pollution have become a very important problem that people need to solve urgently.
According to the noise reduction mechanism, a series of slowly-recoverable PU-composite materials which used slowly-recoverable PU as matrix were prepared by filling with steel s...
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