橡胶改性PP阻燃泡沫材料吸声性能的研究

Study on Acoustic Property of Flame Retardant PP Foam Modified with EPR

研究了ＥＰＲ改性ＰＰ阻燃泡沫材料的吸声特性，探讨了ＥＰＲ、交联剂、发泡剂用量及泡沫材料厚度和材料背后空腔厚度对其吸声性能的影响。结果表明，当交联剂用量为０６７份时，泡沫材料最大吸声系数为０９４；随着泡沫材料厚度和背后空腔厚度的增大，吸声性能有所提高，且最大吸声系数特征频率向低频区域移动。

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.