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Design, Realization, and Characterization of Advanced Adhesives for Joining Ultra‐Stable C/C Based Components
Author(s) -
Casalegno Valentina,
De la Pierre des Ambrois Stefano,
Corazzari Ingrid,
Turci Francesco,
Tatarko Peter,
Damiano Olivier,
Cornillon Laurence,
Terenzi Andrea,
Natali Maurizio,
Puglia Deborah,
Torre Luigi,
Ferraris Monica
Publication year - 2020
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.202000229
Subject(s) - cyanate ester , materials science , adhesive , composite material , shear strength (soil) , characterization (materials science) , thermal expansion , dynamic mechanical analysis , aerospace , lap joint , polymer , epoxy , nanotechnology , environmental science , layer (electronics) , soil science , soil water , political science , law
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.