Design, Realization, and Characterization of Advanced Adhesives for Joining Ultra‐Stable C/C Based Components,Macromolecular Materials and Engineering

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Design, Realization, and Characterization of Advanced Adhesives for Joining Ultra‐Stable C/C Based Components
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2020-07-20 , DOI: 10.1002/mame.202000229
Valentina Casalegno ₁ , Stefano De la Pierre des Ambrois ₁ , Ingrid Corazzari ₂ , Francesco Turci ₂ , Peter Tatarko ₃ , Olivier Damiano ₄ , Laurence Cornillon ₄ , Andrea Terenzi ₅ , Maurizio Natali ₅ , Deborah Puglia ₅ , Luigi Torre ₅ , Monica Ferraris ₁

Affiliation

The aim of this work is to develop high‐performance adhesives to join carbon fiber reinforced composites (C/C) for use in aerospace applications; in order to guarantee sound mechanical strength, a low coefficient of thermal expansion, and ease of application on large components. Several different adhesive formulations, based on phenolic or cyanate‐ester resins (charged with the maximum experimentally feasible amount of carbon‐based fillers), are developed and tested. The measurements of the lap shear strength at room temperature of the C/C joined by means of one phenolic and one cyanate ester‐based resin demonstrates that these formulations are the most suitable for the given application. A complete characterization, by means of viscosimetry, dilatometry, and thermal gravimetric analysis, coupled with gas analysis by means of mass spectroscopy, confirms that the phenolic‐based formulation is the most promising joining material. A nano‐indenter is used to obtain its Young modulus and hardness, both inside the joint and as a bulk cured adhesive.

中文翻译：

用于连接基于C / C的超稳定组件的高级胶粘剂的设计，实现和表征

这项工作的目的是开发高性能粘合剂，以将碳纤维增强复合材料（C / C）连接到航空航天应用中；为了保证良好的机械强度，低的热膨胀系数以及易于在大型组件上使用。已开发和测试了几种基于酚醛或氰酸酯树脂的粘合剂配方（填充了实验上可行的最大量的碳基填料）。通过一种酚醛和一种氰酸酯基树脂连接的C / C在室温下的搭接剪切强度的测量结果表明，这些配方最适合给定的应用。通过粘度测定，膨胀测定和热重分析的完整表征，以及通过质谱分析进行的气体分析，证实基于酚的配方是最有前途的连接材料。纳米压头用于在接缝内部和作为整体固化粘合剂获得杨氏模量和硬度。

更新日期：2020-09-14

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