含空气层CPE/CZ结构材料低频吸声性能研究  

Study on Low-Frequency Sound Absorption Properties of Structural Material Comprising CPE/CZ and Air Layer

作　　者：姜生[1,2] 周祥[2] 晏雄[1] 

机构地区：[1]东华大学,上海201620 [2]南通纺织职业技术学院,南通226007

出　　处：《南通纺织职业技术学院学报》2010年第2期5-8,共4页Journal of Nantong Textile Vocational Technology college

摘　　要：利用SW260系列的阻抗管测试了由氯化聚乙烯(CPE)作为聚合物基体和N-环己基-2-苯并噻唑次磺酰胺(CZ)有机小分子作为第二组分的杂化材料的吸声性能,通过空气层的介入形成结构材料,发现其在低频段具有良好的吸声性能.研究了空气层厚度的变化对吸声峰值大小及对应频率值的影响,测试了CPE/CZ系列杂化材料和空气层构成的结构材料的声学性能,并分析了损耗因子及损耗因子双峰对材料声学性能的影响.结果表明,含空气层的CPE/CZ结构材料在低频段具有优良的吸声性能。Sound absorption properties of structural m aterial comprising CPE/CZ,which is organic hybrid composites consisting of chlorinated polyethylene（CPE） as the matrix polymer and N-cyclohexyl-2 benzothiazolesulphenamide（CZ） as the second component of an organic low-molecular-weight compound,and the air layer were investigated with a SW260 impedance tube.It is found that structural materials comprising CPE/CZ and air layer had excellent sound absorption properties in low-frequency sound.The effect of thickness of air layer on sound absorption peaks and their corresponding frequencies were studied.Sound absorption properties of structural materials comprising CPE/CZ series hybrid composites and air layer were tested.The influence of loss factors and double peak of loss factors on sound absorption properties of structural materials was analyzed.The results showed that structural material comprising CPE/CZ and air layer had an excellent acoustical absorption property in low frequency.

关 键 词：结构材料 吸声性能 频率 损耗因子 

分 类 号：TB332[一般工业技术—材料科学与工程]