多孔纤维填充芳纶蜂窝夹层结构吸音隔音性能研究  

ACOUSTIC PROPERTIES OF POROUS FIBER ASSEMBLY-FILLED NOMEX HONEYCOMB SANDWICH STRUCTURE

作　　者：肖红波[1] 瞿航 蓝国勇 XIAO Hong-bo;QU Hang;LAN Guo-yong(School of Intelligent Manufacturing,Wuhan Technical College of Communications,Wuhan 430065,China;School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;Guangxi Deford Technology Co.,Ltd.,Guangxi 546100,China)

机构地区：[1]武汉交通职业学院智能制造学院,武汉430065 [2]武汉理工大学材料科学与工程学院,武汉430070 [3]广西德福特科技有限公司,来宾546100

出　　处：《玻璃钢／复合材料》2019年第12期67-71,100,共6页Fiber Reinforced Plastics/Composites

基　　金：广西科技计划项目(桂科AC16450001);武汉交通职业学院科研创新团队项目(CX2018A07)

摘　　要：为了提高芳纶蜂窝夹层复合材料的吸音降噪性能,在蜂窝夹芯中填充PET多孔纤维和PP纤维混合吸音材料,研究了蜂窝高度、多孔纤维填充量、蒙皮开微孔等对蜂窝夹层结构吸音系数(SAC)和传声损失(STL)的影响。结果表明:填充吸音棉、蒙皮开孔可有效改善复合材料夹层结构的吸音性能。在中高频段(0.8 kHz-2.5 kHz)内,当纤维材料在蜂窝夹层结构中的填充量为300 g/m^2时,SAC的峰值为0.84,提高了0.16,但纤维材料对结构STL的影响较小;蒙皮开微孔,有利于发挥微穿孔板的吸声作用和多孔纤维的吸音效果,SAC大幅度提高。In order to improve the sound absorption and noise reduction performance of nomex honeycomb sandwich structure,the effects of honeycomb height,the filling content of porous fibers and the opening of microporous skin on the sound absorption coefficient(SAC)and sound transmission loss(STL)of honeycomb sandwich structures are explored.The experiment results indicate that SAC of sandwich structure can be effectively changed by filling sound absorption cotton and skin opening in 0.8 kHz-2.5 kHz.SAC can be improved by the increase of the fiber content.When the filling content of fiber material is 300 g/m^2,the peak of SAC is 0.84,which increases by 0.16.But the influence of fiber material on STL is weak.Microporous skin is beneficial to play the role of sound absorption of microperforated board and porous fiber,and SAC is greatly improved.

关 键 词：多孔纤维 芳纶蜂窝夹层结构 吸音系数 传声损失 

分 类 号：TB332[一般工业技术—材料科学与工程]