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演讲摘要 |
Because of many excellent properties such as lower thermal conductivity, better insulation, good coherence with the base, good water-proofing, polyurethane(PU) rigid foam have been regarded as a kind of perfect insulation material for external wall. In this speech, the properties of PU rigid foam and the constitutions of PU rigid foam external wall insulation systems will be introduced. The construction methods of these external wall insulation systems as well as the application in building engineering will be expounded. |