Journal of Science and Technology of Composites

Journal of Science and Technology of Composites

High temperature cyanate ester/carbon fiber composite with high ILSS based on synthesized 2,2'-bis (4-cyanatophenyl)propane resin

Document Type : Research Paper

Authors
Mahdi Ahmadi
Hassan Fattahi
Mehrzad Mortezaei
Seyyed Mohammad Javad Mirbagheri
Department of Polymer Engineering, Faculty of Materials and Manufacturing Technologies, Malek Ashtar University of Technology, Tehran, Iran.
10.22068/jstc.2024.2024959.1881
Abstract
Cyanate esters are one the most suitable matrixes for production of high temperature composites with carbon fibers due to their excellent thermo-mechanical properties. Since the curing of this resin has a high heat release, applying a suitable curing cycle has the ability to control the heat release during the curing. Cyanate ester provides high adhesion to carbon fibers even in less resin content, so cyanate ester can be used as a matrix for preparing advanced composites. 2,2'-bis(4-cyanatophenyl)propane resin was synthesized by the reaction of cyanogen bromide and bisphenol A. The synthesized resin was characterized by FT-IR, 1H-NMR and 13C-NMR spectroscopies. The curing behavior of cyanate ester resin was determined by DSC and a suitable curing cycle was defined and it’s efficiency was monitored by FT-IR. Cyanate ester/carbon fiber composite with 30% and 44% resin contents was prepared and their ILSS was determined and thermal and mechanical properties were investigated by DMTA and TGA. The defined curing cycle for 2,2'-bis(4-cyanatophenyl)propane had the ability to control the high heat release of cuing reaction with the curing ability of the resin up to 95.6%. Cyanate ester has a high adhesion to carbon fibers in the composite even in the relatively low resin content 30%. Hence, the amount of ILSS was increased about 9% compared to the ILSS for composite with 44% resin content. At temperatures as high as 250 °C, composite had only 16% decrease in flexural modulus. The cyanate ester/carbon fiber composite had a char yeild of 82.6%.
Keywords
High temperature resin
Cyanate ester
Triazine
High temperature composite
Interlaminar Shear Strength

Subjects

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Journal of Science and Technology of Composites
Volume 11, Issue 1
Spring 2024
Pages 2419-2428