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首页> 外文期刊>Journal of Materials Engineering and Performance >Characterization of Various Carbon-Based Polypropylene Nanocomposites
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Characterization of Various Carbon-Based Polypropylene Nanocomposites

机译：各种碳基聚丙烯纳米复合材料的表征

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摘要

Pure and three types of carbon additives including graphite, graphene, and multi-walled carbon nanotube added into polypropylene (PP) composites as a vibration damping component and sound insulator material in the automotive sector were investigated by using vibrational damping, dynamic mechanical analysis (DMA), tensile, hardness and acoustic behavior tests. According to the obtained results, porosity and distribution of carbon in the polymer matrix are key parameters on the composite parameters causing its reduction of tensile strength and its brittle behavior. Moreover, it seems that 0.01 wt.% graphene and 1 wt.% graphite added PP composites show the highest impact damping properties and also increase the storage and loss modulus of the composite while decreasing the glass transition temperature. The loss factor obtained from DMA and vibration damping test indicated the damping capacity in the interphase of carbon added PP composites depends only on the load applied and not sensitivity upon the natural frequency of the composite system. Depending on the morphological differentiation, graphene added PP composites decrease the sound transmission loss while the 0.1 wt.% MWCNT added PP composites increase sound transmission loss which makes it an alternative vibration damping component.
机译：通过振动阻尼、动态力学分析（DMA）、拉伸、硬度和声学性能测试，研究了纯碳添加剂和三种类型的碳添加剂（包括石墨、石墨烯和多壁碳纳米管）添加到聚丙烯（PP）复合材料中，作为汽车领域的减振元件和隔声材料。根据所得结果，孔隙率和碳在聚合物基体中的分布是影响复合材料拉伸强度和脆性行为的关键参数。此外，0.01 wt.%石墨烯和1 wt.%石墨添加的PP复合材料显示出最高的冲击阻尼性能，并且在降低玻璃化转变温度的同时增加了复合材料的储能模量和损耗模量。DMA和振动阻尼试验得出的损耗系数表明，碳添加PP复合材料界面的阻尼能力仅取决于所施加的载荷，而不是对复合材料系统固有频率的敏感性。根据形态差异，添加石墨烯的PP复合材料降低了声音传输损耗，而添加0.1 wt.%MWCNT的PP复合材料增加了声音传输损耗，这使其成为一种替代的减振组件。

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