(1. 中國電力科學研究院 電工與新材料研究所，北京 100192；
2. 北京市勞動保護科學研究所 國家環(huán)境保護城市噪聲與振動控制工程技術中心，北京 100054;
3. 浙江溫州電力局，溫州 325000)
摘 要: 利用吸聲材料降噪是治理變電站噪聲污染的重要途徑。以鋁纖維、鋁箔、鋁板網為原料，采用冷軋法制備具有不同結構參數(shù)的鋁纖維復合吸聲板，采用阻抗管的標準測試方法檢測鋁纖維復合板吸聲系數(shù)，研究材料的纖維板面密度、空腔厚度、纖維種類等參數(shù)對材料吸聲性能的影響。結果表明：試驗采用的鋁纖維復合板具有優(yōu)異的吸聲性能，采用切削法纖維及面密度為484 g/m2的鋁纖維復合板吸聲性能最好；隨空腔厚度的增大，吸聲系數(shù)的峰值向低頻段移動。
關鍵字: 鋁纖維復合板；變電站；吸聲性能；結構參數(shù)；吸聲系數(shù)
（1. Department of Electrical Engineering and New Material, China Electric Power Research Institute, Beijing 100192, China;
2. Beijing Municipal Institute of Labor Protection-State Environmental Protection Engineering Center for
Urban Noise and Vibration Control, Beijing 100054, China;
3. Zhejiang Wenzhou Electric Power Bureau, Wenzhou 325000, China）
Abstract:Using noise absorption materials is an important way to control noise in substations. The aluminum fibrous composite panel with different structure parameters, which is based on aluminum fibers, aluminum foil and aluminum net board, was successfully fabricated by using cold-rolled method, and its sound absorption coefficient was measured by standing wave ratio method. The effects of surface density, airspace thickness and fiber categories on the sound absorption coefficient were investigated. The results show that the aluminum fibrous composite panel with surface density of 484 g/m2, which is prepared by cutting fibers, has the best sound-absorption property. The airspace thickness shows a great influence on the sound absorption coefficient at low frequency, the sound absorption coefficient peak values shift to the low frequencies with the airspace get thicker.
Key words: aluminum fibrous composite panel; substation; sound-absorption property; structure parameters; sound absorbing coefficient
