聚氨酯弹性体水声吸声材料的合成工艺设计.pdf

第32卷第3期
规船科学技术
Vol 32, No.3
2010年3月
SHIP SCIENCE AND TECHNOLOGY
Mar.,2010
聚氨酯弹性体水声吸声材料的合成工艺设计
李浩,朱锡,梅志远
(海军工程大学船舶与动力学院,湖北式汉430033
摘要:为了达到水下声隐身的目的,必须对水声吸声材料进行研究。聚氨酯弹性体材料因其独特的分子结
构和可设计性得到广泛应用。考虑用其作为水声吸声材料,但该材料的合成工艺影响因素很多,进行合理的工艺设
计可以大大减少试验量。本文从聚氨酯弹性体的微相分离和微观阻尼吸声机理出发,研究设计了聚氨酯弹性体水声
吸声材料的合成工艺,并根据该工艺参数制作了聚氨酯弹体声学测试试样,在脉冲声管中测试了试样的吸声系数,测
试结果表明所设计的工艺参数是合理的。
关键词:聚氨酯弹性体;水声吸声材料;微相分离;エ艺参数
中图分类号:TQ323.8
文献标识码:A
文章编号:1672-7649(2010)03-0089-05D0I:10.3404/j.is.1672-7649.2010.03.020
Design on synthetical technology of polyurethane elastomers material
for underwater anechoic
LI Hao, ZHU Xi, MEI Zhi-yuan
College of Naval Architecture and Power, Naval University of Engineering, Wuhan 430033, China)
Abstract Underwater anechoic material must research for the aim of underwater sound stealth
Polyurethane elastomers material has been extensively applied because of their unique molecular structures
and desirable. The effect factors of synthetical technology on this material are numerous. So, the number of
experiment will reduce largely by reasonable synthetical technology design. The microphase separation and
microcosmic sound absorption mechanism of polyurethane elastomers were analyzed. The synthetical
technology of polyurethane elastomers underwater anechoic material was designed based on this microphase
separation and sound absorption mechanism. Then, polyurethane elastomers underwater anechoic material
sample was prepared using this technological parameter. The sound absorption coefficient of the sample was
measured in the sound pulse tube. The experiment results of underwater acoustic tests indicated that the
technological parameter is reasonable
Key words: polyurethane elastomer; underwater anechoic material; microphase separation;
technological parameter
后的第二代水下吸声材料,该类吸声材料的研究和应
0引言
用始于20世纪80年代,具有优异的水下吸声性能和
在军事应用领域,将水声吸声材料敷设于水下航很好的分子结构可设计性,将成为未来水下吸声材料
行体表面,能减弱主动声呐的回波信号,同时降低其研究的重要方向叫。
自身辐射的噪声,使对敌方水中目标的探测距离得以
聚氨酯弹性体是通过氨酯反应把带羟基的树脂
提高。所以为了达到水下声隐身的目的,必须对水声(软段)和异氧酸酯(硬段)链接而成的聚合物。与橡
吸声材料进行研究。聚氨酯类材料是继传统橡胶之胶类吸声材料相比,聚氨酯弹性体分子链的活性大,
收稿日期:2009-06-22;修回日期:2009-07-07
作者简介:李浩(1984-),男,博士研究生,主要从事舰船复合材料水下声学性能的研究。
万方数据