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首页> 外文期刊>Polymer Composites >Interfacial properties in commingled yarn thermoplastic composites. Part II: Influence on crack initiation and propagation
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Interfacial properties in commingled yarn thermoplastic composites. Part II: Influence on crack initiation and propagation

机译:混纺纱线热塑性复合材料的界面特性。第二部分:对裂纹萌生和扩展的影响

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The second paper in this series aims to identify the relationship between fiber/ matrix interface and cracking phenomena occurring in commingled yam glass fiber/ polypropylene (GF/PP) composites. For this purpose, different interfacial qualities were obtained by a modification of the fiber reinforcement sizing and the matrix coupling. In addition to transverse tensile stress-strain relationships (Part 1 (17)), mode I interlaminar resistance relationships have been recorded while monitoring acoustic emissions. A mode I mechanical analysis points out the influences of the sizing on the mechanisms contributing to energy absorption, which are protection of fibers against break, creation of an interphase and control of adhesion at the glass fiber surface. Sizing appears as a key parameter governing crack initiation and propagation for these commingled thermoplastic composites. Owing to the relationship between global fiber/matiix adhesion and cracking mechanisms, mode I fracture mechanics is a powerful characterization technique of the interfacial quality of GF/PP composites. Polym. Compos. 25:589-600, 2004. (C) 2004 Society of Plastics Engineers.
机译:本系列的第二篇论文旨在确定纤维/基体界面与山药玻璃纤维/聚丙烯(GF / PP)混合复合材料中出现的开裂现象之间的关系。为此,可以通过修改纤维增强材料的尺寸和基体耦合来获得不同的界面质量。除了横向拉伸应力-应变关系(第1部分(17))外,在监测声发射的同时还记录了模式I的层间电阻关系。模式I的机械分析指出了上浆对有助于能量吸收的机理的影响,这些机理包括保护纤维不致断裂,形成中间相以及控制玻璃纤维表面的附着力。上浆似乎是控制这些混合热塑性复合材料裂纹萌生和扩展的关键参数。由于整体纤维/乳胶粘合性与开裂机理之间的关系,模式I断裂力学是GF / PP复合材料界面质量的有力表征技术。 Polym。 Compos。 25:589-600,2004。(C)2004年塑料工程师学会。

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