جذب صوتی کارآمد در ساختمان ها
ترجمه نشده

جذب صوتی کارآمد در ساختمان ها

عنوان فارسی مقاله: روکش های آئروژل سیلیکا و پلی استر برای جذب صوتی کارآمد در ساختمان ها
عنوان انگلیسی مقاله: Silica aerogel/polyester blankets for efficient sound absorption in buildings
مجله/کنفرانس: مصالح ساختمانی و ساخت و ساز – Construction and Building Materials
رشته های تحصیلی مرتبط: مهندسی عمران، مهندسی پلیمر
گرایش های تحصیلی مرتبط: سازه، پلیمریزاسیون
کلمات کلیدی فارسی: مشخصات صوتی، روکش آئروژل سیلیکا، پلی استر بافته نشده، ساختار منفذ، آبگریزی، پرتونگاری مقطعی میکرو محاسبه ای اشعه ایکس
کلمات کلیدی انگلیسی: Acoustic characteristics، Silica aerogel blanket، Polyester nonwoven، Pore structure Hydrophobicity، X-ray micro-computed tomography
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
نمایه: Scopus – Master Journals List – JCR
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.conbuildmat.2019.06.031
دانشگاه: Department of Textile Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
ناشر: الزویر - Elsevier
نوع ارائه مقاله: ژورنال
نوع مقاله: ISI
سال انتشار مقاله: 2019
ایمپکت فاکتور: 4.686 در سال 2018
شاخص H_index: 129 در سال 2019
شاخص SJR: 1.522 در سال 2018
شناسه ISSN: 0950-0618
شاخص Quartile (چارک): Q1 در سال 2018
فرمت مقاله انگلیسی: PDF
تعداد صفحات مقاله انگلیسی: 14
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: خیر
آیا این مقاله مدل مفهومی دارد: ندارد
آیا این مقاله پرسشنامه دارد: ندارد
آیا این مقاله متغیر دارد: ندارد
کد محصول: E12378
رفرنس: دارای رفرنس در داخل متن و انتهای مقاله
فهرست انگلیسی مطالب

Abstract


1-Introduction


2-Background


3-Experimental


4-Results and discussion


5-Conclusion


Declaration of Competing Interest


Acknowledgements


Funding


Appendix A. Supplementary data


References

نمونه متن انگلیسی مقاله

Abstract


In this paper sound absorption characteristics of silica aerogel/polyester (PET) blankets are investigated. PET fibers were made on an industrial scale compact melt spinning line and then processed on a laboratory scale needling line to produce nonwoven fabrics. The silica aerogel blankets were prepared by in situ synthesis of silica aerogel on the nonwoven fabrics via a two-step sol-gel process of tetraethoxysilane which was followed by drying at ambient pressure. In order to achieve aerogel particles with different pore structure and properties, various synthesis conditions were used. The nonwoven samples were characterized in terms of thickness, fiber diameter, porosity and pore size by X-ray micro-computed tomography and scanning electron microscopy. Moreover, nitrogen adsorption analysis was carried out to determine the specific surface area and pore structure of aerogel particles. The effect of pore structure, physical properties and hydrophobicity of aerogel particles on sound absorption coefficient (SAC) of blankets was investigated using two-microphone transfer function method. Also, the effect of sol volume and nonwoven thickness was investigated. The results indicated that at all frequency levels, silica aerogel/PET blankets enjoy higher SAC than their untreated counterparts. It was found that, SAC is strongly affected by the pore structure of aerogel particles. Silica aerogels with lower bulk densities, larger pore size and higher porosities exhibited better sound absorption performance. The results also indicated that hydrophobic aerogel blankets exhibit higher SAC as compared with hydrophilic blankets. The results also showed that the thickness of nonwoven fabric strongly affects the SAC of aerogel blankets.


Introduction


In recent decade, noise pollution has become the most widespread and least controlled environmental issue. Noise pollution causes or contributes to not only psychological disorders, but also cardiovascular disease, loss of hearing, high blood pressure and tinnitus hearing impairment. Thus technological control of acoustical behavior of industrial products is a fact that has to be scientifically faced by researchers [1]. This control can be achieved using either sound insulating or sound absorbing materials. Conventional various sound absorbers such as foam-like materials or nonwoven fabrics as low-density porous materials can prevent reflection of the incident sound waves and hence increase sound absorption. The use of nonwovens, as widely accepted porous sound absorbing materials, has been extensively researched [2–۶]. Since more than a decade, acoustic engineers have been looking for lightweight sound absorbing materials in buildings. The challenge primarily stemmed from inability of conventional bulky nonwoven fabrics and foams to absorb sound waves, specifically sound waves of low frequency bands that impair speech comprehension [7,8].

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