The influence of production parameters on sound absorption of activated carbon fiber felts
The influence of production parameters on sound absorption of activated carbon fiber felts
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DOI：
10.1080/00405000.2015.1097083
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发表时间：
2016-09
期刊：
影响因子：
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通讯作者：
Yue Shen;G. Jiang
中科院分区：
文献类型：
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作者：
Yue Shen;G. Jiang
为研究不同工艺参数对活性炭纤维毡吸声性能的影响，制备了不同工艺参数下的粘胶基活性炭纤维毡，并采用传递函数法在阻抗管中测试了250-6300 Hz声学范围内的正入射吸声系数。分析了炭化温度、炭化速率、活化温度、活化时间对吸声性能的影响。中低频吸声系数随频率的增加而显著上升，而高频吸声系数随频率的增加而波动。在其它工艺参数不变的情况下，中低频吸声系数随炭化温度的升高和活化时间的延长而增大，随炭化速率和炭化温度的升高而减小。同时，随着炭化温度和炭化速率的升高，材料的高频吸声系数降低，随着活化温度的升高，材料的高频吸声系数先升高后降低，随着活化时间的延长，材料的高频吸声系数又升高。
Intended to study the influence of different production parameters on sound absorption of activated carbon fiber felts, viscose-based activated carbon fiber felts acquired from different production parameters were prepared and taken to test the sound absorption coefficients in normal incidence by means of transfer function method, within an acoustic range of 250–6300 Hz in the impedance tube. Analysis was made to find the influence of carbonization temperature, carbonization rate, activation temperature, and activation time on sound absorption properties. Sound absorption coefficients at medium–low frequencies strikingly climbed with the increasing frequency, while fluctuating at high frequencies. Other production parameters remaining constant, sound absorption coefficients increased at medium–low frequencies with the rising carbonization temperature and the extended activation time, while subsequently decreased with the rising carbonization rate and carbonization temperature. At the same time, sound absorption coefficients decreased at high frequencies with the rising carbonization temperature and carbonization rate, while increased but later decreased with the rising activation temperature, and increased again with the added time in activation.