Development of New Light Sound Shield Panel Effective to Low Frequency Sound Which is Composed of Carbon Fiber Reinforced Polymer Composites

碳纤维增强聚合物复合材料制成的新型轻质隔音板的研制对低频声音有效

• 批准号: 09555199
• 负责人: SUMITA Masao
• 金额: $ 7.87万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09555199/
• 关键词: sound shield panel; PVDF; electric circuit; resonance frequency; organic dielectrics; VGCF; DZ; CPE; BaTiOィイD23ィエD2; 圧電分散型有機ハイブリッド; 炭素繊維; 有機誘電体; 力学的損失正接; 塩素化ポリエチレン; BaTiO_3; DZ; インダクタンス; 負性容量; 垂直吸音率; 圧電性高分子フィルム; シアノエチル化ヒドロキシエチルセルロース

New sound shield panel is composed of piezoelectric polymer composites. Three type of piezoelectric polymer composites were designed and measured their damping and sound shielding properties.1. Piezoelectric polymer film, PVDF with conductive layer or outer electric circuit is effective to damping of mechanical energy and found to be increased about 10dB sound transmission loss at 150,200 and 250Hz in resonance frequency.2. Organic dielectrics DZ was formed monodomain structure in clorinated polyethyrene, CPE matrix.. In this organic hybrid material, the loss factor increased with decreasing strain. This means that DZ/CPE composite is effective to sound shielding. The addition of vapor growth carbon fiber, VGCF to DZ/CPE increace composite's modulus prominently without decreasing loss factor. The sound transmission loss of this organic hybrid material increased much higher than convention sound shilding material such as mica filled CPE in the frequency reigion below 500Hz. Other organic hybrid materials, BPSR/AR(acryl rubber)/VGCF is found to be effective to damping of vibrational energy.3.The loss factor and sound transmission loss of inorganic piezoelectric composites, CPE/BaTiO3/VGCF were measured as function of carbon fiber volume fraction and frequency. The optimum volume fraction of VGCF to damping properties is about 8%. This is near percolation threshold of this composites. The sound transmission loss increased below 400Hz by addition of Baio3.

新的Sound Shield面板由压电聚合物复合材料组成。设计并测量了三种压电聚合物复合材料并测量其阻尼和声音屏蔽特性。1。带导电层或外电路的压电聚合物膜，PVDF有效地阻尼机械能，发现在150,200和250Hz的共振频率下增加了约10dB的声音传输损失。2。有机电介质DZ在酸性聚乙烯，CPE基质中形成单域结构。这意味着DZ/CPE复合材料有效地发出屏蔽。蒸汽生长碳纤维，VGCF在DZ/CPE中的添加，并在不降低损耗因子的情况下显着地增加了复合材料的模量。这种有机杂交材料的声音传输损失比常规式的仿制材料（如云母填充的CPE）高得多，在500Hz以下的频率率中。其他有机杂交材料，BPSR/AR（丙烯酸橡胶）/VGCF有效地抑制振动能量。3。损耗因子和无机压电复合材料的声音传递损失，CPE/BATIO3/VGCF作为碳纤维体积量和频率的功能测量。 VGCF对阻尼特性的最佳体积分数约为8％。这是该复合材料的渗透阈值。通过添加BAIO3，声音传输损失增加了400Hz以下。

项目成果

住田雅夫、金子核: "圧電・導電複合材料:その制振・音響特性"材料科学. 37(印刷中). (2000)

Masao Sumita，Nuclear Kaneko：“压电/导电复合材料：它们的振动阻尼和声学特性”材料科学 37（出版中）。

住田雅夫: "有機ハイブリッド材料の可能性" ポリファイル. 35. 56-59 (1998)

Masao Sumita：“有机杂化材料的可能性”Polyfile 35. 56-59 (1998)。

Masao Sumita: "Damping and Sound Shielding Properties of Piezoelectric and Electrical conductive Particles Filled Polymer Composites"J. Mate. Sci. Soc. Jpn.. 36(in press). (2000)

Masao Sumita：“压电和导电颗粒填充聚合物复合材料的阻尼和隔音性能”J。