SOUND ABSORPTION PROPERTIES OF SINGLE-HOLE HOLLOW POLYESTER REINFORCED RUBBER COMPOSITES

Abstract

Abstract: A series of single-hole hollow polyester (abbreviated SHHPF) reinforced hydrogenated carboxyl nitrile rubber (abbreviated HXNBR) composites were fabricated. The sound absorption properties were investigated. The results indicate that the sound absorption property of HXNBR/SHHPF composite with thickness of 1 mm was remarkably improved with increasing SHHPF content. At SHHPF content of 40%, the sound absorption property is the best. The sound absorption coefficient at frequency 2500 Hz was increased to 0.671, and the effective bandwidth was 1800 Hz~2500 Hz for sound absorption coefficient larger than 0.2. However, sound absorption property was degraded when the SHHPF content grows to 50%. While, with the HXNBR/SHHPF mass ratio of 80/20, the sound absorption property was improved by increasing thickness of composites from 1 mm to 5 mm. However, the improvement through increasing thickness was relatively small after 3 mm, and the improvement was moved to medium frequency. At the same time, tensile mechanical property of HXNBR/SHHPF was also improved significantly, which benefits for its practical application.

Key words: hydrogenated carboxyl nitrile rubber, single-hole hollow polyester, sound absorption, damping, composite

CLC Number:

TB332

HONG Jie. SOUND ABSORPTION PROPERTIES OF SINGLE-HOLE HOLLOW POLYESTER REINFORCED RUBBER COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2019, 0(1): 54-60.

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