【摘要】 研究了用可再生资源稻草秸秆板替代汽车用吸声泡沫塑料。应用L9(34)正交试验研究了稻草秸秆长度、秸秆板密度、热压时间对秸秆板的吸声性能的影响,结果表明秸秆板密度是影响稻草秸秆板吸声系数的主要因素。通过测试发现相同厚度的稻草秸秆板平均吸声系数大于泡沫塑料,当用稻草秸秆板替代XMQ6608客车原发动机隔声罩内的泡沫塑料时,新罩的降噪效果优于原罩,试验结果证明:轻质稻草秸秆板是能用作汽车吸声材料的。更多还原

【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.更多还原