| Study on Acoustic Property of Flame Retardant PP Foam Modified with EPR |
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| DOI： |
| Key Words: EPR；modified PP；flame retardant；acoustic property |
| Author Name | Affiliation | | Zhao Shulan | Haerbin Engineering University | | Zhu Rongkai | Haerbin Engineering University | | Zhang Fengmin | Haerbin Engineering University | | Zhang Jun | Haerbin Engineering University | | Sun Wenyan | Haerbin Engineering University |
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| Abstract: |
| A study was made on the acoustic property of a flame retardant PP foam modified with EPR. The influence of the level of EPR，crosslinking agent and blowing agent，the foam thickness and the cavity depth at the foam back on the acoustic property was investigated. The results showed the sound absorption coefficient of the foam came up to 0.94 when the 0.67 phr of crosslinking agent was used；the acoustic property improved and the characteristic frequency of the upper sound absorption coefficient shifted to the low frequency region as the foam thickness and the cavity depth at the foam back increased. |
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