Sound transmission loss from polyvinyl acetate polymer mixed with different porous carbons
| Autor: | Hsi Chi Yang, Pei-Qi Chen, Mohammad Mahmudul Huq, Chien-Te Hsieh, Tsung-Pin Tasi |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Nanotube
Nanotechnology 02 engineering and technology Carbon nanotube engineering.material law.invention chemistry.chemical_compound 0203 mechanical engineering Coating law medicine General Materials Science Composite material chemistry.chemical_classification Polyvinyl acetate Chemistry General Chemistry Polymer Microporous material 021001 nanoscience & nanotechnology Condensed Matter Physics 020303 mechanical engineering & transports Mechanics of Materials engineering 0210 nano-technology Mesoporous material Activated carbon medicine.drug |
| Zdroj: | Microporous and Mesoporous Materials. 232:184-188 |
| ISSN: | 1387-1811 |
| Popis: | The soundproofing properties of microporous activated carbon (AC) and mesoporous carbon nanotube (CNT) in a polymer matrix (polyvinyl acetate, PVA) have been systematically investigated. Analyzed by N2-adsorption technique, the AC powders are mainly microporous, while the CNT powders consisted of a large number of mesoporous channels. An anechoic termination method is adopted to analyze the sound transmission loss (TL) for PVA-based coatings at different frequencies ranging from 400 to 3000 Hz. Pristine PVA, AC-PVA, CNT-PVA, and AC-CNT-PVA coatings showed average TL values of 24.4, 25.1 and 27.2, and 25.9 dB, respectively. The TL value as an increasing function of mesopore fraction reflects that the mesopore is a major contributor to the improved soundproof performance, while the aid of micropore seems to be minor. The improved TL can be attributed to the fact that the mesopore of CNTs is capable of providing a large number of voids and cavities for air storage, enhancing efficiency of sound absorption and reduces sound vibration. On the basis, the selection of porous carbons plays an important role in determining the soundproof performance of PVA-based coating. This design of soundproof coating delivers a feasible potential as eco-environmental decoration materials due to its good stability, non-toxicity, and excellent soundproof performance. |
| Databáze: | OpenAIRE |
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