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首页> 外文期刊>Composite Structures >Mechanical behavior of various nanoparticle filled composites at low-velocity impact
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Mechanical behavior of various nanoparticle filled composites at low-velocity impact

机译：各种纳米颗粒填充的复合材料在低速冲击下的力学行为

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摘要

Low-velocity impact tests were performed on the various nanoparticle filled composites using a falling mass impact tester. The mechanical behavior and fracture morphology of two synthesized nanocomposites were investigates using polymer resin as the matrix and two types of filler contents as the reinforcing elements. To study the effect of exfoliated nanoparticles on the properties of epoxy matrix, titanium dioxide and cloisite~®30B nanopowder were prepared with the filler content varied from 2 to 10 vol%. Significant improvement in mechanical properties of modulus was obtained when particle exfoliation and dispersion homogeneity were achieved. The impact energy and the corresponding initial velocity at 2.1, 5.2 and 8.1 m/s for both reinforced nanocomposites are conducted and found to have the linear relationship with both impact results. The experimental results imply that the degree of exfoliation may exhibit a maximum with respect to tensile strength, but show a minimum with respective to impact strength. It is found that the tensile strength, loss modulus, impact strength and dynamic thermal rheology of nanocomposites are extensively affected by the geometry, temperature, volume and type of filler content, and homogeneity of the nanoparticles.
机译：使用下落质量冲击测试仪对各种纳米颗粒填充的复合材料进行了低速冲击测试。以聚合物树脂为基质，两种填料含量为增强剂，研究了两种合成的纳米复合材料的力学行为和断裂形态。为了研究剥落的纳米颗粒对环氧基质性能的影响，制备了二氧化钛和cloisite〜®30B纳米粉，填料含量为2至10 vol％。当达到颗粒剥落和分散均匀性时，模量的机械性能得到了显着改善。对两种增强纳米复合材料进行了碰撞能量和相应的2.1、5.2和8.1 m / s的初始速度的测试，发现与两种碰撞结果均具有线性关系。实验结果表明，剥落程度相对于抗张强度可能显示最大值，而相对于冲击强度则显示最小值。发现纳米复合材料的拉伸强度，损耗模量，冲击强度和动态热流变学受到几何形状，温度，填料含量的体积和类型以及纳米颗粒的均匀性的广泛影响。

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