| 摘要 |
Disclosed herein are multiwall sheets and methods for making the same. In one embodiment, a multiwall sheet comprises: main layers and transverse walls. The multiwall sheet comprises: a total thickness of greater than or equal to about 45 mm, a weight of greater than or equal to about 4.5 kg/m2, and/or greater than or equal to about 8 cells and a U-value of less than or equal to about 1.2 W/m2K. The multiwall sheet further comprises greater than 75 wt % branched polycarbonate resin, based upon a total weight of the multiwall sheet.
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