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.
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.
参考文献
| [1] | 吕如榆.吸声材料的吸声机理和设计原则[J].噪声与振动控制,1983(03):52. |
| [2] | 苑改红,王宪成,侯培中,李传梁.三聚氰胺泡沫塑料的吸声性能[J].机械工程材料,2007(09):55-57. |
| [3] | Eirk S Weiser;Theodore F Johnson;Terry L St Clair;Yoshiaki Echigo;Hisayasu Kaneshiro;Brian W Grimsley .Polyimide foams for aerospace vehicles[J].High performance polymers,2000(1):1-12. |
| [4] | PALUMBO Dan.Evaluation of acoustic properties of lightweight,granular materials[M].South Carolina:American Institute of Aeronautics and Astronautics,2003 |
| [5] | 王连才,郭宝华,曾心苗,郭建梅,李淑凤.聚酰亚胺泡沫塑料制备与性能研究[J].工程塑料应用,2008(03):6-8. |
| [6] | 周成飞;郭建梅;翟彤 等.聚氨酯泡沫材料吸声频率特性研究[J].PU技术,2008,72:84-87. |
| [7] | 尉海军,姚广春,王晓林,李兵,尹铫.铝硅闭孔泡沫铝吸声性能研究[J].功能材料,2006(12):2014-2018. |
| [8] | WEISER Erik Saul .Synthesis and characterization of polyimide residuum,friable ballons,microspheres and foams[D].Virginia:The College of William and Mary,2004. |
| [9] | 何琳;邱小军;朱海潮.声学理论与工程应用[M].北京:科学出版社,2006:1-110. |
| [10] | 马大猷.现代声学理论基础[M].北京:科学出版社,2004 |
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