Examining the thermo-mechanical properties of novel cyanate ester blends through empirical measurement and simulation

Crawford, AO, Howlin, BJ, Cavalli, G and Hamerton, I (2012) Examining the thermo-mechanical properties of novel cyanate ester blends through empirical measurement and simulation Reactive and Functional Polymers, 72 (9). pp. 596-605.

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Abstract

Three cyanate ester monomer or oligomer species: 2,2-bis(4-cyanatophenyl) propane 1, 1-1-bis(4-dicyanatophenyl)ethane 2, and the oligomeric phenolic cyanate (Primaset™ PT30) 3, are blended in various ratios to form binary mixtures, formulated with copper(II) acetylacetonate (200 ppm) in dodecylphenol (1% w/v active copper suspension) and cured (2 K/min to 150 °C + 1 h; 2 K/min to 200 °C + 3 h) followed by a post cure (2 K/min to 260 °C + 1 h). Thermal analysis using DSC reveals good agreement with literature data for the homopolymers: typical polymerisation enthalpies of ca. 97-98 kJ/mol. cyanate are obtained for 1 and 2, with slightly lower values (ca. 80-90 kJ/mol.) obtained for Primaset™ PT30. DMTA data show the possibility of using binary blends of the polymers to yield novel materials with similar thermal and mechanical properties to Primaset™ PT30, while improving the processability of the more highly aromatic oligomer. Two of the homopolymers (1 and 2) and a binary (1:1) blend of the same were simulated. Molecular dynamics experiments reveal good agreement with empirical data generated using DSC, DMTA and TGA. © 2012 Elsevier Ltd. All rights reserved.

Item Type:	Article
Authors :	Crawford, AO, Howlin, BJ, Cavalli, G and Hamerton, I
Date :	September 2012
DOI :	10.1016/j.reactfunctpolym.2012.05.012
Depositing User :	Symplectic Elements
Date Deposited :	28 Mar 2017 13:47
Last Modified :	06 Jul 2019 05:12
URI:	http://epubs.surrey.ac.uk/id/eprint/769623

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