The Characteristics of Perlite Sound Absorption Board Formed By Vibration Molding

Xiao Yanjun*, Liu Rui, Song Haiping, Jing Ran, Zhu Jiayu
School of Mechanical Engineering, Hebei University of Technology, Tianjin, 300130, P.R. China.

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© 2015 Yanjun et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the School of Mechanical Engineering, Hebei University of Technology, Tianjin, 300130, P.R. China.


This paper puts forward a scheme to form perlite sound absorption boards by vibration molding according to the material properties and the characteristics of vibration forming method. In the trial, the feasibility and reliability of this method were confirmed by studying the effect of working pressure, frequency and vibration force on the quality of the perlite sound absorption board. Besides, a series of recommended parameters for better forming was proposed. Through the discussion on the characteristics of the perlite sound absorption board after vibration molding, it is verified that different molding methods have a great influence on the quality and performance of the perlite sound absorption board. In addition, the conclusion which provides a basis for further research on forming method of similar boards shows that the density of the finished products formed by vibration molding method is more uniform.

Keywords: Peilite, sound absorption board, vibration molding, vibration force, working pressure.