首页> 外文会议>Congress of the International Council of the Aeronautical Sciences; 20060903-08; Hamburg(DE) >NANOTECHNOLOGY FOR NOVEL HIGH-PERFORMANCE COMPOSITES: MANUFACTURING, CHARACTERIZATION AND APPLICATION
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NANOTECHNOLOGY FOR NOVEL HIGH-PERFORMANCE COMPOSITES: MANUFACTURING, CHARACTERIZATION AND APPLICATION

机译:新型高性能复合材料的纳米技术:制造,表征和应用

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An innovative way to compensate the deficits of composites (FRP) produced by the well-established injection technique (LRI) compared to the prepreg technique was found at the DLR Institute for Composite Structures and Adaptive Systems. The improvement of the composite quality by using nanocomposites was tested with the Single Line Injection technique (SLI). A closer look was taken at an epoxy resin filled with nanosized silicon dioxide (SiO_2). With SiO_2 the stiffness and strength could be improved significantly compared to the neat resin. In addition, the resin shrinkage could be considerably reduced and thermal conductivity increased. The nanocomposites remained still injectable and the density of the nanocomposites was maintained at an almost constant level (lightweight aspect). The results could be transferred to fibre-reinforced composites made with the SLI technique. Particularly the significant increase of the Young's modulus and its high linearity in the stress-strain diagram led to reduction of the inter-fibre fractures and improvement of the overall material performance in comparison to unfilled fibre composite and opens therefore new fields for aerospace applications.
机译:在DLR复合材料结构和自适应系统研究所,发现了一种创新的方法来补偿由成熟的注射技术(LRI)与预浸料坯技术相比所产生的复合材料(FRP)的缺陷。通过单线注入技术(SLI)测试了使用纳米复合材料改善复合材料质量的方法。仔细研究了填充有纳米二氧化硅(SiO_2)的环氧树脂。与纯树脂相比,使用SiO_2可以显着提高刚度和强度。另外,可以显着减少树脂收缩并增加导热率。纳米复合材料仍然是可注射的,并且纳米复合材料的密度保持在几乎恒定的水平(轻质方面)。结果可以转移到用SLI技术制成的纤维增强复合材料中。与未填充的纤维复合材料相比,特别是杨氏模量的显着提高及其在应力应变图中的高线性度导致减少了纤维间的断裂并改善了整体材料性能,因此为航空航天应用开辟了新领域。

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