Citation
Suhawati Ibrahim, . and Shamsul Kamaruddin, . and Ismaliza Ismail, . and Kamarudin Ab Malek, . Sound absorption analysis of foamed rubber composites from kenaf and calcium carbonate. pp. 36-44. ISSN 1511-1768
Abstract
Sound absorption is any means of reducing the sound pressure by converting its energy into heat within a material. The types of sound absorbing materials determine the frequency distribution of noise to be absorbed. Rubber composites as sound insulators were prepared by incorporation of two types of fillers namely kenaf and calcium carbonate in blends of 50 mole epoxidised natural rubber (ENR 50) and methyl methacrylate (MMA)-grafted natural rubber latex. A two-microphone impedance tube was used to investigate the sound absorption coefficient value of the composites prepared. Rubber composites exhibited excellent sound absorption properties with sound absorption coefficient values up to 0.87. The presence of kenaf in the composite was found to create void sections during the drying process hence increasing the absorption coefficient value of the composite. The presence of calcium carbonate that was scattered on the walls of voids had increased stiffness of the composite providing better absorption of sound waves.
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Abstract
Sound absorption is any means of reducing the sound pressure by converting its energy into heat within a material. The types of sound absorbing materials determine the frequency distribution of noise to be absorbed. Rubber composites as sound insulators were prepared by incorporation of two types of fillers namely kenaf and calcium carbonate in blends of 50 mole epoxidised natural rubber (ENR 50) and methyl methacrylate (MMA)-grafted natural rubber latex. A two-microphone impedance tube was used to investigate the sound absorption coefficient value of the composites prepared. Rubber composites exhibited excellent sound absorption properties with sound absorption coefficient values up to 0.87. The presence of kenaf in the composite was found to create void sections during the drying process hence increasing the absorption coefficient value of the composite. The presence of calcium carbonate that was scattered on the walls of voids had increased stiffness of the composite providing better absorption of sound waves.
Additional Metadata
Item Type: | Article |
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AGROVOC Term: | Kenaf |
AGROVOC Term: | Calcium carbonate |
AGROVOC Term: | Sound |
AGROVOC Term: | Noise |
AGROVOC Term: | Rubber |
AGROVOC Term: | Natural rubber |
AGROVOC Term: | Insulation |
AGROVOC Term: | Latex |
AGROVOC Term: | Sound waves |
AGROVOC Term: | Drying |
Geographical Term: | Malaysia |
Depositing User: | Ms. Suzila Mohamad Kasim |
Last Modified: | 28 Apr 2025 00:42 |
URI: | http://webagris.upm.edu.my/id/eprint/22969 |
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