چکیده مقاله
The present study aimed to focus on improving acoustic and mechanical characteristics by embedding the polyurethane foam PUF with the rock wool fibers RWF of diverse values 0 3wt% that were synthesized using the polymerization process In addition, the association between non acoustical parameters and sound absorption characteristics of the porous polyurethane foams was investigated Moreover, indicators of effective non acoustic parameters, including air flow resistance AFR , porosity, volumetric density, and microstructure, were determined The results showed sound absorption properties were highly enhanced when polyurethane composite foam PUF/RWF i e 1, 2, and 3wt% were used, as compared to the pristine PUF Furthermore, the sound absorption coefficient SAC of PUF composite was highly enhanced in the frequency range of 400 to 1600 Hz when the foam was combined with an RWF amount of 2wt% Besides, the density and AFR increased with the addition of different contents of RWF Open porosity composite foams strongly depended on AFR and volumetric density i e a negative association with RWF content The use of the excessive amount of the RWF RWF > 2wt% caused intramolecular agglomeration, which resulted in reduced sound absorption efficiency Finally, multiple regression analysis was used to investigate the association between SAC and non acoustic parameters, including AFR, porosity, volumetric density, and RWF amount, which revealed a well proportion between experimental data and statistical analysis
کلیدواژهها
نویسندگان
Behzad Mohammadi
Department of Occupational Health Engineering, School of Public Health, Tabriz University of Medical Sciences, Tabriz, Iran
Abdolrasoul Safaiyan
Department of Biostatistics and Epidemiology, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran
Peymaneh Habibi
Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tabriz, Iran
Gholamreza Moradi
Department of Occupational Health Engineering, School of Public Health, Tabriz University of Medical Sciences, Tabriz, Iran
شیوه ارجاع
Mohammadi, Behzad and Safaiyan, Abdolrasoul and Habibi, Peymaneh and Moradi, Gholamreza,1400,design and fabrication of polyurethane composite foams reinforcement with rock wool fiber; effect of the non-acoustical parameters on sound absorption coefficient,Seventh International Conference on Health, Treatment and Health Promotion
ارائهشده در
مجموعه مقالات هفتمین کنفرانس بین المللی بهداشت،درمان و ارتقای سلامت30 مهر 1400