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›› 2007, Vol. 41 ›› Issue (6): 29-31.

• 研究报告 • Previous Articles     Next Articles

New Sound Absorbing Material for Automobile ——Determination of Sound Absorption Property of Straw Board

HUA Liang, HUANG Yin-di   

  1. College of Mechanical and Electricity, Nanjing Forestry University, Nanjing 210037, China
  • Received:2007-10-08 Revised:1900-01-01 Online:2007-11-30 Published:2007-11-30

Abstract: The straw board which is a renewable resource is used as sound absorbing material to substitute for automobile foam plastics. Effect of straw length, board density and hot pressing time on sound absorption property of straw board was studied through L9(34) orthogonal test.The density is the main factor to affect sound absorption coefficient. The average sound absorption coefficient of straw board is bigger than that of foam plastics. When replacing foam plastics of XMQ 6608 bus engine cover with straw board, the noise reduction effect of new cover is superior to that of original cover. The test result proved that the straw board could be used as automobile sound absorbing material.

Key words: sound absorbing material, straw, low density straw board

CLC Number: