材料科学
石墨烯
天然橡胶
复合材料
丙烯腈
吸收(声学)
水下
弹性体
纳米复合材料
模数
聚合物
纳米技术
共聚物
海洋学
地质学
作者
Baihua Yuan,Weikang Jiang,Heng Jiang,Meng Chen,Yu Liu
标识
DOI:10.1177/0731684418754411
摘要
A series of graphene nanoplatelet-modified acrylonitrile-butadiene rubber-based underwater acoustic absorbing materials were prepared. The dynamic mechanical properties, underwater sound absorption properties, differential scanning calorimetry, vulcanization property, and mechanical properties of graphene nanoplatelets/acrylonitrile-butadiene rubber nanocomposites were studied theoretically and experimentally. The results indicated that graphene nanoplatelet-modifiedacrylonitrile-butadiene rubber-based underwater acoustic absorbing materials exhibited excellent damping and underwater sound absorption properties. The storage modulus ([Formula: see text]) and loss modulus ([Formula: see text]) of graphene nanoplatelets/acrylonitrile-butadiene rubber nanocomposites were increased significantly with increasing graphene nanoplatelets content. At a graphene nanoplatelets content of 25 phr, the [Formula: see text] and [Formula: see text] at 15°C improved by 1201 and 603%, respectively. The obvious improvement in [Formula: see text] and [Formula: see text] were mainly attributed to the extremely high interfacial contact area between graphene nanoplatelets and acrylonitrile-butadiene rubber chains and the ultrahigh mechanical properties of graphene nanoplatelets. The underwater sound absorption coefficient ([Formula: see text]) was increased obviously as the graphene nanoplatelets were incorporated. The optimal [Formula: see text] of the nanocomposites was achieved as the graphene nanoplatelets content was 10 phr, and the average value of [Formula: see text] was improved from 0.35 to 0.73—an increase of nearly onefold. The notable improvement in [Formula: see text] was due to the marked increase in damping properties and thermal conductivity of graphene nanoplatelets/acrylonitrile-butadiene rubber nanocomposites. The merits of graphene nanoplatelet-modified underwater acoustic absorbing materials were higher damping, better underwater sound absorption, and better mechanical properties with unaffected density in comparison to other inorganic and rigid fillers or porous fillers.
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