基于凝胶层间结构复合材料的隔声性能

Sound insulation property of composite materials based gel laminated structure

为了研究凝胶的隔声性能,将凝胶涂覆于硅酸钙板和玻镁板之间,复合玻纤织物,制备凝胶层间结构的复合材料。利用双声道分析仪分析研究了凝胶位置、凝胶厚度和复合玻纤织物对层间结构复合材料隔声性能的影响。研究表明:利用复合凝胶层,减少了吻合效应;层间结构复合材料的隔声量随凝胶厚度增加而变大,但厚度大于3mm后,隔声量增幅减缓;复合玻纤织物后,进一步提高了结构的隔声性能。

In order to study the sound insulation properties of the gel,the gel was coated between a calcium silicate board and a glass magnesium board,and the glass fiber fabric was composited to prepare composite materials with the laminated structure.The influence of gel position,gel thickness and composite glass fiber fabric on sound insulation property of composite materials with the laminated structure was analyzed by the double channel acoustic instrument.The results show that the use of composite gel layer reduces the anastomosis effect.The sound insulation effect of composite materials with the laminated structure increases with the increase of the gel thickness.But after the thickness exceeds 3 mm,the increase range of the sound insulation decreases.After glass fiber fabric was composited,the sound performance of laminated structure further improved.