采用不连续聚醚醚酮/碳纤维热塑性模塑化合物为厚截面构件

IF 1.8 Q3 ENGINEERING, MANUFACTURING
S. Erland, L. Savage
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引用次数: 1

摘要

摘要/ Abstract摘要:不连续纤维模压复合材料(DFMCs)的热压成型是一种成型几何形状复杂零件的方法,但它并不是一个简单的过程。快速和不可逆的固化周期阻碍了热固性树脂的使用,热塑性树脂提供较差的机械性能。最近使用聚醚醚酮(PEEK)基质的dfmc提供了一种替代方案,将热塑性塑料的可用性与显著增强的机械性能相结合。提出并研究了一种新的制造方法,其中在压制最终组件之前,将原始材料合并为多个“预荷”,以克服dfmc的局限性;膨松度、空隙度和纤维取向。采用短梁剪切试验来评估层压DFMCs的力学影响,显示与标准样品的最小差异。三点弯曲试验评估了纤维束的基本方向,显示了以韧性为代价的机械性能的显著提高。提出了一种确定层间剪切模量的新方法,并成功地进行了验证。图形抽象
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The use of discontinuous PEEK/carbon fiber thermoplastic moulding compounds for thick-section componentry
Abstract The hot-pressing of discontinuous fiber moulding compounds (DFMCs) is an established way of forming geometrically complex components, however, it is not a simple process. Rapid and irreversible cure cycles hinder the use of thermoset resins, and thermoplastic resins offer inferior mechanical performance. The recent availability of DFMCs utilising a Polyether Ether Ketone (PEEK) matrix offer an alternative, combining the usability of thermoplastics with significantly enhanced mechanical properties. A novel manufacturing approach is proposed and investigated, in which virgin material is consolidated into multiple ‘pre-charges’ prior to pressing the final component, combating the limitations of DFMCs; loft, voidage and fiber orientation. Short beam shear tests were employed to assess the mechanical implications of laminating DFMCs, demonstrating minimal differences to a standard sample. Three-point bend tests assessed rudimentary orientation of fiber bundles, showing significantly improved mechanical performance at the cost of toughness. A novel method to determine the interlaminar shear modulus is also presented and successfully validated. Graphical abstract
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来源期刊
CiteScore
4.00
自引率
0.00%
发文量
11
审稿时长
16 weeks
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