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首页> 外文会议>EPP-vol.6; American Society of Mechanical Engineers(ASME) International Mechanical Engineering Congress and Exposition; 20061105-10; Chicago,IL(US) >CHARACTERIZATION AND MODELING OF ANISOTROPIC THERMAL CONDUCTIVITY IN POLYMER COMPOSITES
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CHARACTERIZATION AND MODELING OF ANISOTROPIC THERMAL CONDUCTIVITY IN POLYMER COMPOSITES

机译：聚合物复合材料各向异性热导率的表征与建模

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摘要

The thermophysical properties of a commercially available Polyphenylene Sulphide (PPS)-carbon fiber composite material are experimentally characterized and used to validate application of the Nielsen thermal conductivity model to this category of polymer matrix composites. The PPS-fiber thermal conductivity was measured in the three orthogonal directions, using the laser flash thermal diffusivity method, and found to display significant anisotropy. Thermal conductivity predictions based on the Nielsen model, and using E-SEM measured values of fiber dimensions and fiber orientation and carbon fiber mass content determined from TGA analysis, were found to be within 5% of the corresponding measurements. The close agreement between predictions and measurements permitted the determination of the morphological influence of fiber material, volume content and orientation, and resin and fiber thermal conductivities, on thermal conductivity to be parametrically investigated and optimized for a given formulation. The impact of this optimization on the thermal performance of a PPS-fiber pin fin is described.
机译：对市场上可买到的聚苯硫醚（PPS）-碳纤维复合材料的热物理性质进行了实验表征，并用于验证Nielsen热导模型在这类聚合物基复合材料中的应用。使用激光闪光热扩散率法在三个正交方向上测量了PPS纤维的热导率，结果显示出明显的各向异性。发现基于Nielsen模型的导热系数预测，以及使用E-SEM测量的纤维尺寸和纤维方向以及TGA分析确定的碳纤维质量含量的值，均在相应测量值的5％以内。预测和测量之间的密切一致性允许通过参数研究和优化给定配方来确定纤维材料的形态学影响，体积含量和取向以及树脂和纤维的热导率对热导率的影响。描述了这种优化对PPS纤维引脚散热片的热性能的影响。

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