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首页> 外文期刊>SAMPE Journal >Resin Matrix Composites: Organoclay-Aerospace Epoxy Nanocomposites, Part II
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Resin Matrix Composites: Organoclay-Aerospace Epoxy Nanocomposites, Part II

机译：树脂基复合材料：有机粘土-航空航天环氧纳米复合材料，第二部分

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The matrix phase of a fiber reinforced composite serves to transfer load between the reinforcing fibers, enables the composite to be processed into the geometry required, and provides the primary environmental durability of the component Nanocomposite polymers have tremendous potential to enhance the performance of polymers used for composite matrices. The reported performance improvements in polymers modified with low loadings of organo mica-type silicates offer promise of economically improving the performance of the fiber reinforced composite. In this research, a low-cost epoxy resin suitable for use as a composite matrix (Epon 862 and Curing Agent W) was modified with various modified clays (montmorillonite) and characterized. The organic treatment of clay was found to be compatible with aerospace epoxy resin and was used to prepare the nanocomposites. The characterization of the wide-angle x-ray diffraction (WAXD), small-angle x-ray scattering (SAXS) and transmission electron microscopy (TEM) demonstrates that exfoliated nanocomposites were formed. Dynamic mechanical analysis (DMA) shows that the storage modulus of the nanocomposite is higher than that of the pristine polymer; which is ascribed to the high aspect ratio and high strength of the nanoclay The solvent uptake, such as acetone for the nanocomposite, is significantly reduced compared with the pristine polymer; which is ascribed to the barrier effect of nanosheets of the nanoclay Mechanical property measurement of nanocomposite material includes fracture toughness, strength and modulus.
机译：纤维增强复合材料的基体相用于在增强纤维之间转移载荷，使复合材料能够加工成所需的几何形状，并提供组件的主要环境耐久性。纳米复合聚合物具有巨大的潜力，可以增强用于以下用途的聚合物的性能。复合矩阵。据报导，用低含量的有机云母型硅酸盐改性的聚合物的性能有所改善，有望在经济上改善纤维增强复合材料的性能。在这项研究中，用各种改性粘土（蒙脱土）改性了适合用作复合基质（Epon 862和固化剂W）的低成本环氧树脂。发现粘土的有机处理与航空航天环氧树脂相容，并用于制备纳米复合材料。广角X射线衍射（WAXD），小角X射线散射（SAXS）和透射电子显微镜（TEM）的表征表明，形成了剥落的纳米复合材料。动态力学分析（DMA）表明，纳米复合材料的储能模量高于原始聚合物的储能模量。这归因于纳米粘土的高长径比和高强度。与原始聚合物相比，纳米复合材料的溶剂吸收量（例如丙酮）显着降低。这归因于纳米粘土的纳米片的阻挡作用。纳米复合材料的机械性能测量包括断裂韧性，强度和模量。

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