Acoustic properties of polymer foam composites blended with different percentage loadings of natural fiber

2017 International Conference on Materials and Intelligent Manufacturing

材料科学;机械制造

Azahari, M. Shafiq M.^1 ; Rus, Anika Zafiah M.^1 ; Kormin, Shaharuddin^1 ; Zaliran, M. Taufiq^1

Sustainable Polymer Engineering, Advanced Manufacturing and Material Center (SPEN-AMMC), Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Johor, Batu Pahat

86400, Malaysia^1

关键词: Absorption co-efficient;    Different frequency;    Impedance tubes;    Low and high frequencies;    Optical microscopes;    Polymeric foams;    Sound absorption;    Sound absorption coefficients;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/244/1/012009/pdf
DOI  :  10.1088/1757-899X/244/1/012009

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

This study investigates the acoustic properties of polymer foam composites (FC) filled with natural fiber. The FC were produced based on crosslinking of polyol, with flexible isocyanates and wood filler. The percentages of wood filler loading are 10, 15, and 20 wt% ratio of polyol. The FC also has a thickness of 10, 20 and 30 mm. The acoustic properties of the FC were determined by using Impedance Tube test, Optical Microscope (OM) and Mettler Toledo Density Kit test. The results revealed that FC20 with 30 mm in thickness gives the highest sound absorption coefficient (α) with 0.970 and 0.999, at low and high frequency respectively. FC20 also shows smallest pores structures size with 134.86 μm and biggest density with 868.5 kg/m3which helps in absorbing sound. In this study, FC with different percentage loading of wood filler and different foam thickness shows the ability to contribute the absorption coefficient of polymeric foam at different frequency levels. Lastly, this type of FC is suitable for any type of sound absorption applications material.