Thermal Decomposition of Cyanate Ester Resins

Ramirez, M. L.; Walters, R.; Savitski, E. P.; Lyon, R. E.

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Thermal Decomposition of Cyanate Ester Resins

2001-09-01
By Ramirez, M. L. ; Walters, R. ; Savitski, E. P.

File Language:

English

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Creators:

Ramirez, M. L. ; Walters, R. ; Savitski, E. P. ; Lyon, R. E.
Corporate Creators:

Hewlett-Packard Laboratories. Technical Services Laboratory ; Eastman Chemical Company ; Galaxy Scientific Corporation ; United States. Department of Transportation. Federal Aviation Administration. Office of Aviation Research
Subject/TRT Terms:
Publication/ Report Number:

DOT/FAA/AR-01/32
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final report
Corporate Publisher:

United States. Federal Aviation Administration. Office of Aviation Research
Abstract:

Polycyanurate networks were prepared by thermal polymerization of cyanate ester monomers containing two or more cyanate ester (-O-C≡N) functional groups. The thermal decomposition chemistry of nine different polycyanurates was studied by thermogravimetry and infrared analysis of solid films and analysis of the gases evolved during pyrolysis using infrared spectroscopy and gas chromatography-mass spectrometry. It was found that the thermal stability of the polycyanurates was essentially independent of monomer chemical structure with the major mass loss occurring at about 450°C for all materials. Analysis of the solid-state and gas phase thermal degradation chemistry indicates a thermal decomposition mechanism for polycyanurates which begins with hydrocarbon chain scission and cross-linking at temperatures between 400°-450°C with negligible mass loss, followed by decyclization of the triazine ring at 450°C that liberates volatile cyanate-ester decomposition products. The solid residue after pyrolysis increases with the aromatic content of the polymer and incorporates about two thirds of the nitrogen and oxygen present in the original material.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/15466/dot_15466_DS1.pdf
File Type:

[PDF - 2.95 MB]
Collection(s):

FAA Fire Safety ; US Transportation Collection
Main Document Checksum:

urn:sha-512:c14d08b7a7a17a4581bacd9d66d745be7e28f023d60dd210a8c83474d585335de2bdcc888ae761ca0df83e5e7a9da451a16248ccc8f7ea2bff3493116ed55a45

File Language:

English

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