共查询到17条相似文献,搜索用时 78 毫秒
1.
2.
对舰船用高分子材料在军用领域和民用领域的发展进行回顾,并介绍了高分子材料在舰船建造和维修领域的应用以及在舰船与海洋工程中的使用概况,着重介绍了舰船用高分子阻尼材料、高分子树脂基复合材料以及高分子吸声材料的研究进展,同时对高分子材料在舰船与海洋工程中的应用前景进行了展望。 相似文献
3.
4.
5.
泡沫玻璃是一种含有无数封闭气泡,气孔率达90%以上,由气泡组成的隔热玻璃材料。气泡中充满了空气或其它气体,这些气泡被相当薄的玻璃壁相互隔离,泡径一般为1—3mm左右,各自成为独立的球状体。此玻璃可采用废玻璃、粉煤灰、云母、珍珠岩、浮石粉、火山灰等为主要原料生产制成。文章介绍了泡沫玻璃的性能、及其在建筑领域中的应用和施工。并对泡沫玻璃产业的发展进行了展望。 相似文献
6.
7.
吸声材料的研究与应用 总被引:11,自引:0,他引:11
利用吸声材料来吸声降噪是治理噪声污染的重要途径之一.阐述了共振吸声材料与多孔吸声材料吸声降噪的机理,较为详细的介绍了各种吸声材料的分类、研究与应用及性能评价,对吸声材料未来研究发展趋势加以展望. 相似文献
8.
9.
10.
泡沫金属吸声材料制备及吸声性能的研究 总被引:3,自引:0,他引:3
本文着重介绍了以聚氨酯泡沫塑料为基材,利用电化学理论和方法,通过化学镀和电镀制备泡沫铜吸声材料的方法。研究表明,用这种方法制造的吸声材料具有高的孔隙率和吸声特性。该吸声材料可广泛用于通风管道,汽车、舰船进排气消声设备的制造。 相似文献
11.
12.
水声吸声材料常用于水下航行体表面,其研究对于水下目标的声隐身设计具有重要意义,在军事应用领域受到广泛关注。橡胶类和聚氨酯类粘弹性高分子材料因其独特的分子结构和可设计性得到广泛应用,此外吸声材料的结构设计对其性能也有着很大影响。本文在水声吸声材料吸声机理的基础上,对其主要材料体系和吸声结构进行了综述。 相似文献
13.
14.
Abstract Novel ultralight porous fiber-based composites are a very attractive subject in the material chemistry and are enabled to promise applications in the sound absorption fields. In this work, it reported a facile strategy to prepare the flame-retardant, sound-absorbing, and mechanical enhancement porous fiber-based composites (PFC-EM-x) by using natural cellulose fiber, glass fiber, and flame retardant. Subsequently, the expandable microspheres (EMs) were added to construct the well-defined porous microstructure of materials for the enhancement in sound-absorbing performance. The results demonstrated that the high EMs contents had a remarkable influence on the porous structure of the composites so that the composites achieved the outstanding sound-absorbing performance and acceptable mechanical properties compared with other reported materials, especially as-prepared PFC-EM-20 composite showed excellent sound absorption at a range of high frequencies with the maximum sound absorption coefficient of 0.781 and tensile strength of 1.07?kN/m. Moreover, the limiting oxygen index values of all the samples were more than 26, both V1 and V2 rating in UL-94 test were achieved, which indicated that the obtained PFC-EM-x composites displayed outstanding flame retardancy. In summary, this study provides a facile strategy to rationally construct mechanically robust, highly efficient sound-absorbing and flame retardant ultralight composites which have promising applications in the future as green engineering materials. 相似文献
15.
16.
Yongshang Tian Yitian Tang Jinshuang Wang Ruirui Zhang Xinyue Yan Guiyu Peng Linxia Fang Qiangshan Jing 《International Journal of Applied Ceramic Technology》2020,17(3):1033-1043
Low-grade nonmetal ore, mainly magmatic soil and tuff, was used to prepare porous sound-absorbing ceramics. A new processing method that combines the foaming and templating methods was used to produce open-cell porous ceramics. Silicon carbide and carbon powders were used as the foaming agent and template agent, respectively, and their effects on open-cell preparation and sound-absorption properties were also investigated. The results showed that sound-absorption performance was closely related to the apparent porosity (H). Compared with either foaming or template methods, the new method incorporating both processes increased the sound-absorption coefficient (α) and H by 51%-258% and 69%-728%, respectively. Optimum sound absorption of the ceramics, that is, α = 0.68, noise reduction coefficient (NRC) = 0.48, and H = 50.22%, were obtained at foaming agent contents (FACs) of 1.5 wt% and template agent contents (TACs) of 4 wt%. The Delany-Bazley and Voronina models were selected to simulate the sound-absorption coefficients and the latter one fitted well with our experimental results. 相似文献
17.
高温微波功能复合材料研究进展 总被引:2,自引:0,他引:2
介绍了微波功能复合材料的应用环境与发展;论述了透波和吸波材料的性能要求;重点叙述了两种高温材料的国内外研究现状;并详细描述了智能复合材料的结构,在此基础上,探讨了微波功能复合材料的应用前景和发展方向. 相似文献