| 金属吸隔声材料 |
| 添加时间：2019/12/25 14:41:15 浏览次数： |
| 金属吸隔声材料包括金属纤维材料和多孔泡沫金属材料。其中金属纤维材料有不锈钢纤维，铝纤维等，其优点是强度高、耐高温、耐水性好。多孔泡沫金属材料主要应用的是泡沫铝，其优点是吸声性能稳定，吸声系数大于常用吸声材料，对中低频噪声有良好的吸能能力。金属纤维板和泡沫铝吸声板都可以直接暴露在空气中，不需要护面穿孔板和填充物。但是他们易遭受有害物质破坏，尤其在氯盐的环境下，与基础连接的部位更易遭受破坏。另外，金属材料的隔声屏单元结构连接处容易产生噪声泄漏。金属声屏障生产工艺需要严格控制，生产成本高，故国内应用较少。 Metal sound absorption materials include metal fiber materials and porous foam metal materials. Among them, metal fiber materials include stainless steel fiber and aluminum fiber, which have the advantages of high strength, high temperature resistance and good water resistance. The main application of porous foam metal is foam aluminum. Its advantage is that the sound absorption performance is stable, the sound absorption coefficient is larger than that of the commonly used sound absorbing material, and has good energy absorption ability for medium and low frequency noise. Metal fiberboard and aluminum foam sound absorbing board can be directly exposed to air, without perforation plates and fillers. However, they are vulnerable to damage by harmful substances, especially in the environment of chlorine salt, and the parts connected with the foundation are more vulnerable to damage. In addition, noise leakage is easy to occur at the joint of the metal sound insulation screen unit structure. The production process of metal sound barrier needs strict control and high production cost, so it is seldom used in China. |
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