活性炭纤维材料吸声性能分析  

Analysis of sound absorbing properties of activated carbon fiber materials

作　　者：沈岳[1,2] 蒋高明[1] 季涛[2] 高强[2] 刘其霞[2] 

机构地区：[1]江南大学经编技术教育部工程研究中心,江苏无锡214122 [2]南通大学纺织服装学院,江苏南通226019

出　　处：《纺织学报》2013年第3期1-4,共4页Journal of Textile Research

基　　金：交通运输部科技项目(2011319813500);江苏省高校自然科学研究项目资助(11KJB540001)

摘　　要：为研究活性炭纤维的吸声性能,在同一工艺条件下制备了不同规格粘胶基活性炭纤维毡,用传递函数法在250～1 600 Hz中低频率声波范围内采用阻抗管对活性炭纤维材料的吸声性能进行测试,分析材料比表面积、厚度、面密度、空腔厚度等参数对吸声性能的影响。结果表明:活性炭纤维毡多孔材料具有较好的吸声性能,其对声波中频段的吸声好于低频段,随材料的比表面积、厚度、面密度、空腔厚度的增加,其吸声性能越好,但平均吸声系数增幅不同。In order to study the sound absorbing properties of activated carbon fiber, viscose-based activated carbon fiber felts with different specifications were prepared under the same conditions. And the sound absorbing properties of viscose-based activated carbon fiber felts were measured by transfer function method in the 250 - 1 600 Hz middle and low frequencies acoustic range using an impedance tube. The effects of such parameters as specific surface area, thickness, surface density and depth of cavity on the sound absorbing properties were analyzed. The results showed that porous materials like activated carbon fiber felt have better sound absorbing properties, and their sound absorbing capacity in middle frequency is better than that in low frequency; moreover, as specific surface area, thickness, surface density and depth of cavity increase, sound absorbing properties improve, but the average sound absorbing coefficients show an increase by different margins.

关 键 词：活性炭纤维 吸声系数 比表面积 厚度 面密度 空腔厚度 

分 类 号：TS176.5[轻工技术与工程—纺织材料与纺织品设计]