Multifunctional composites present a route to structural weight reduction. Nanoparticles such as carbon nanofibers (CNF) provide a compromise as a lower cost nanosize reinforcement that yields a desirable combination of properties. Blends of PETI-330 and CNFs were prepared and characterized to investigate the potential of CNF composites as a high performance structural medium. Dry mixing techniques were employed and the effect of CNF loading level on melt viscosity was determined. The resulting powders were characterized for degree of mixing, thermal and rheological properties. Based on the characterization results, samples containing 30 and 40 wt% CNF were scaled up to approx.300 g and used to fabricate moldings 10.2 cm x 15.2 cm x 0.32 cm thick. The moldings were fabricated by injecting the mixtures at 260-280 C into a stainless steel tool followed by curing for 1 h at 371 C. The tool was designed to impart high shear during the process in an attempt to achieve some alignment of CNFs in the flow direction. Moldings were obtained that were subsequently characterized for thermal, mechanical and electrical properties. The degree of dispersion and alignment of CNFs were investigated using high-resolution scanning electron microscopy. The preparation and preliminary characterization of PETI-330/CNF composites are discussed. Keywords: resins, carbon nanofibers, scanning electron microscopy, electrical properties, thermal conductivity,injection
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机译：多功能复合材料提供了减少结构重量的途径。诸如碳纳米纤维（CNF）之类的纳米颗粒提供了一种折衷方案，因为它是一种低成本的纳米级增强材料，可产生理想的性能组合。制备PETI-330和CNF的共混物，并进行表征，以研究CNF复合材料作为高性能结构介质的潜力。采用干混技术，并确定了CNF负载量对熔体粘度的影响。表征所得粉末的混合度，热和流变性。根据表征结果，将含有30％和40％（重量）CNF的样品按比例放大至约300 g，并用于制造10.2 cm x 15.2 cm x 0.32 cm厚的模制品。通过将混合物在260-280 C的温度下注入不锈钢工具中，然后在371 C的温度下固化1小时来制造模制品。该工具的设计目的是在加工过程中施加高剪切力，以实现CNF在模具中的某些排列。流动的方向。获得模制件，随后对其进行热，机械和电气性能表征。使用高分辨率扫描电子显微镜研究了CNF的分散程度和排列方式。讨论了PETI-330 / CNF复合材料的制备和初步表征。关键词：树脂，碳纳米纤维，扫描电镜，电性能，热导率，注射
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