石膏基多孔复合吸声材料的研究  

Development of a Sound Absorbing Gypsum-Based Porous Composite Material

作　　者：黄学辉[1] 唐辉[1] 陶志南[1] 陈浩[1] 

机构地区：[1]武汉理工大学材料与科学工程学院,湖北武汉430070

出　　处：《材料开发与应用》2007年第2期16-19,共4页Development and Application of Materials

基　　金：湖北省交通项目厅资助(批准号:20021j2008)

摘　　要：以高强石膏为主要原料,内掺玻璃纤维,在发泡剂的作用下,制备出一种新型多孔吸声材料,采用驻波管法测试材料的吸声系数。研究结果表明,纤维、发泡剂、水灰比及厚度对材料吸声性能有显著影响。当玻璃纤维含量为3%、发泡剂含量为0.4%、水灰比为0.7时材料的综合性能最佳。材料的降噪系数达0.6,中低频吸声性能较佳。A new type of round absorbing material was made from super-strength gypsum and glass fiber and the round absorption coefficient of the material was tested by standing wave tube method. Experiment results manifested that content of fiber, blowing agent, water-gypsum ratio and thickness have great effects on the round absorbing performance of the samples. When the content of glass fiber, blowing agent and water-gypsum ratio are separatdy 3%, 0.4% and 0.7, the performace of the material reaches optimum. The noise reduction coefficient of the material is 0.6, and the sound absorption property at middle-low frequency is good.

关 键 词：高强石膏 玻璃纤维 吸声系数 降噪系数 

分 类 号：TQ177.3[化学工程—硅酸盐工业]