Facile Adjusting for Cells of Lightweight Isocyanate-based Polyimide Foam and Operable Combination between Different Distinctive Acoustic Foams for Higher Performance
作者： Xiao-He Ren , Gao-Hui Sun , Lei-Chao Wang , Rong-Rong Chen , Jun Wang
DOI: 10.1007/S10118-020-2482-Y
关键词: Window opening 、 Polyimide 、 Isocyanate 、 Absorption (acoustics) 、 Cell size 、 Materials science 、 Slurry 、 Composite material 、 Organic chemistry 、 General Chemical Engineering 、 Polymers and Plastics
摘要: New ambient sound absorption material, lightweight isocyanate-based polyimide foam (IBPIF), was fabricated by operable combination between different distinctive acoustic IBPIF. Cellular structure of IBPIF facilely and obviously adjusted increased slurry temperature corresponding to change in properties. Moreover, density all kept at only 12–17 kg/m3. With increasing from 0 °C 40 °C, cell size window opening rate gradually 553 µm 791 6.85% 58.46%, respectively. In this study, generated slurries (marked as PIF-2) PIF-6) showed best behavior 315–800 Hz 800–6300 regions, After study combined prepared stitching two IBPIFs, results that when PIF-6 sheet used receiving surface even though with thickness 10 mm could the possess level region PIF-6. Furtherly, be significantly enhanced PIF-2 reach or close level.
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