CAJ | 학술논문

采用前驱体微球法制备闭孔聚酰亚胺泡沫,并对其吸声性能进行了研究.结果表明,闭孔聚酰亚胺泡沫具有共振吸声特点;对闭孔聚酰亚胺泡沫的吸声系数进行了理论推导,研究了泡沫厚度对泡沫吸声性能的影响,分析了聚酰亚胺泡沫的吸声理论;采用闭孔泡沫与开孔泡沫组合后,泡沫整体吸声性能显著提高.
채용전구체미구법제비폐공취선아알포말,병대기흡성성능진행료연구.결과표명,폐공취선아알포말구유공진흡성특점;대폐공취선아알포말적흡성계수진행료이론추도,연구료포말후도대포말흡성성능적영향,분석료취선아알포말적흡성이론;채용폐공포말여개공포말조합후,포말정체흡성성능현저제고.
The closed cell polyimide foams were fabricated by foaming the precursor balloons, and the foams' acoustic absorption properties were tested. The results show that the acoustic absorption properties of closed cell polyimide foams have the typical resonance acoustic absorption characteristic. The acoustic absorption properties of polyimide foams were researched, and the influence of thickness and density on its acoustic absorption properties were also studied, the acoustic absorption theoretics of polyimide foams was analyzed. The combination of closed cell and open cell polyimide foams can notable enhance the acoustic absorption coefficient.