氯丁橡胶压电复合材料吸声性能研究

Study on Sound Absorption Performance of Neoprene Piezoelectric Composite

以氯丁橡胶(IR)为基体材料,以钛酸钡(BT)压电性相,导电炭黑为导电相,通过物理共混制备压电橡胶复合材料,并通过改变钛酸钡在复合材料中的质量分数,研究其对压电复合材料吸声性能的影响。结果表明:在同一频率下,阻尼性能随着钛酸钡质量分数的增加而小幅度增加,且当钛酸钡为氯丁橡胶30wt%时,低频方向吸声性能最好。

Using neoprene as the matrix material and barium titanate piezoelectric material as the functional filler, a new type of composite material was prepared by physical blending, and the damping of the rubber matrix was studied by changing the volume fraction of barium titanate in the composite material And its sound absorption performance. Results show that at different frequencies, the damping performance increases slightly with the increase of the mass fraction of barium titanate, and when the mass fraction of barium titanate is 30%, the sound absorption performance is the best.