Functional Hollow Ceramic Microsphere/Flexible Polyurethane Foam Composites with a Cell Structure: Mechanical Property and Sound Absorptivity.

Polymers (Basel) · 2022 · PMC8912845 · PMID 35267736

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a decreasing trendno p-value reported

SEM Observation According to Figure 7 A–E, the cell size of composites has a decreasing trend with a rise in the HCM content.

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an increasing trendno p-value reported

When the frequency exceeds 1500 Hz, sound absorbent composites show an increasing trend in the sound absorption coefficient with the content of HCM being increased.

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