Glass-fibre-reinforced composites with enhanced mechanical and electrical properties – Benefits and limitations of a nanoparticle modified matrix
Glass-fibre-reinforced composites with enhanced mechanical and electrical properties – Benefits and limitations of a nanoparticle modified matrix
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DOI：
10.1016/j.engfracmech.2006.05.015
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发表时间：
2006-11
影响因子：
5.4
通讯作者：
M. Wichmann;J. Sumfleth;Florian H. Gojny;M. Quaresimin;B. Fiedler;K. Schulte
中科院分区：
文献类型：
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作者：
M. Wichmann;J. Sumfleth;Florian H. Gojny;M. Quaresimin;B. Fiedler;K. Schulte
纳米颗粒，特别是碳纳米管(CNTs)为聚合物的改性提供了很大的潜力。在机械性能方面，尤其是韧性方面，它们是非常有效的填充物。此外，它们还允许将与其导电性有关的功能特性应用到聚合物基质中。在本论文中，不同的纳米粒子，如气相白炭黑和炭黑，被用来优化玻璃纤维增强复合材料的环氧基体系。它们的纳米尺寸使其在树脂传递模塑法(RTM)生产的FRPS中用作颗粒增强，而不会被玻璃纤维束过滤。此外，在固化过程中施加电场，以增强纳米薄膜在z方向的取向度。仅添加0.3wt%的碳纳米管，纳米颗粒改性复合材料的层间剪切强度显著提高(+16%)。层间韧性GIc和GIIc没有以类似的方式受到影响。含有碳纳米管的层压板在填料含量很低的情况下表现出相对较高的导电性，这使得可以进行应力应变监测和损伤检测等功能特性的研究。
Nanoparticles and especially carbon nanotubes (CNTs) provide a high potential for the modification of polymers. They are very effective fillers regarding mechanical properties, especially toughness. Furthermore, they allow the implication of functional properties, which are connected to their electrical conductivity, into polymeric matrices. In the present paper, different nanoparticles, as fumed silica and carbon black, were used to optimise the epoxy matrix system of a glass-fibre-reinforced composite. Their nanometre-size enables their application as particle-reinforcement in FRPs produced by the resin-transfer-moulding method (RTM), without being filtered by the glass-fibre bundles. Additionally, an electrical field was applied during curing, in order to enhance orientation of the nanofillers in z-direction. The interlaminar shear strengths of the nanoparticle modified composites were significantly improved (+16%) by adding only 0.3wt.% of CNTs. The interlaminar toughness GIcand GIIcwas not affected in a comparable manner. The laminates containing carbon nanotubes exhibited a relatively high electrical conductivity at very low filler contents, which allows the implication of functional properties, such as stress–strain monitoring and damage detection.