专利汇可以提供Acoustic baffle for deep submergence专利检索,专利查询,专利分析的服务。并且A multi-layered acoustic baffle, particularly useful at great depths, comprising at least two layers of fume-produced silicon dioxide, the particle size being between 70 to 500 angstroms, the particles being sintered together in chain-like formations and having surface areas of 50 m2/g to 400 m2/g; each of the layers being prestressed to a pressure greater than the pressure at which the baffle is to be used; and each of the layers having a thickness not greater than 1/4 wavelength of the highest frequency of interest in the material. At least one layer of high-density, viscoelastic, material having a high acoustic shear loss coefficient is sandwiched in between each layer of the silicon dioxide. The baffle further comprises two layers of a compliant watertight coating bordering the two outer layers of silicon dioxide and the sides of the baffle, thereby completely enclosing the other layers.,下面是Acoustic baffle for deep submergence专利的具体信息内容。
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