التفاصيل البيبلوغرافية
| العنوان: |
An experimental study on castor oil-based flexible PU foam coated with silica hydrogel for acoustic and fire resistance applications. |
| المؤلفون: |
Selvaraj, Vinoth Kumar1 (AUTHOR), Subramanian, Jeyanthi1 (AUTHOR) jeyanthi.svitc@gmail.com, T, Senthil Muthu Kumar.2 (AUTHOR), Raja, S.3 (AUTHOR), S, Vignesh.1 (AUTHOR), K, Anto Kumar.1 (AUTHOR) |
| المصدر: |
Hyperfine Interactions. Dec2024, Vol. 245 Issue 1, p1-13. 13p. |
| مصطلحات موضوعية: |
*ACOUSTIC impedance, *ABSORPTION of sound, *SILICA gel, *CASTOR oil, *NOISE control |
| مستخلص: |
This research explores the production of flexible polyurethane foam using castor oil with varying densities, treated via dip coating with sodium silicate and hydrochloric acid to form a protective silica hydrogel. This treatment enhances the foam's acoustic and fire resistance properties. The sound absorption coefficient (SAC) is measured using an impedance tube per ASTM E 1050-12, and the noise reduction coefficient (NRC) is calculated. Specimen S5 shows superior performance with an NRC of 0.336 for coated and 0.283 for non-coated conditions, a significant 19% improvement. TGA revealed that non-coated foam showed initial sublimation at 240 °C and substantial degradation with a 75% weight loss at 400 °C, while coated samples like S5 began to decay at 300 °C, showing only a 25% weight reduction at 400 °C. These results highlight the influence of foam density on acoustic enhancement, making the foam ideal for automotive interiors by providing a quieter and safer environment for passengers. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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