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Interfacial properties in commingled yarn thermoplastic composites. Part I: Characterization of the fiber/matrix adhesion

机译:混纺纱线热塑性复合材料的界面特性。第一部分:纤维/基质粘附力的表征

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The paper aims to assess the fiber/matrix interface and adhesion quality in commingled GF/PP composites by means of complementary experimental methods. For this purpose, different interfacial qualities were obtained by a modification of the sizing of the fiber reinforcement (polypropylene specific sizing, non-specific sizing and no sizing), and of the matrix (with or without coupling agent). Transverse tensile stress-strain curves have been recorded while monitoring acoustic emissions. An analysis of acoustic emission data associated with fracture surface examinations has helped explain the differences observed in mechanical properties and damage mechanisms, emphasizing the importance of the interphase in the performance of these new composites. Thus it has been shown that the association of three experimental investigation methods (transverse tension, acoustic emission, and fracture surface analysis) makes it possible to characterize both the glass/silane bond (so-called fiber/matrix interface) and the global fiber/matrix adhesion (addition of several different zones and interfaces). (C) 2004 Society of Plastics Engineers.
机译:本文旨在通过互补的实验方法评估GF / PP混合复合材料中的纤维/基质界面和粘合质量。为此目的,通过改变纤维增强材料的尺寸(聚丙烯特定尺寸,非特定尺寸和无尺寸)和基质(具有或不具有偶联剂)的尺寸获得了不同的界面质量。在监测声发射的同时已记录了横向拉伸应力-应变曲线。与断裂表面检查相关的声发射数据分析有助于解释观察到的机械性能和损伤机理的差异,强调了相间在这些新型复合材料性能中的重要性。因此,已经表明,三种实验研究方法(横向张力,声发射和断裂表面分析)的结合使表征玻璃/硅烷键(所谓的纤维/基质界面)和整体纤维/基质附着力(增加了几个不同的区域和界面)。 (C)2004年塑料工程师学会。

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