Development of epoxy‐cyanate ester‐clay nanocomposites offering enhanced thermally stability

ABSTRACT The preparation and characterization of blends of a series of dicyanate monomers such as 2,2′‐bis(4‐cyanatophenyl) propane (DCDPP), bis‐4‐cyanato‐biphenyl (DCBP), bis‐4‐cyanatonaphthalene (DCN), 3,3′‐bis(4‐cyanatophenyl)sulphide (DCTDP), 3,3′‐bis(4‐cyanatophenyl)sulphone (DCDPS), and the di...

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Bibliographic Details
Published in:Journal of applied polymer science 2019-07, Vol.136 (28), p.n/a
Main Authors: Venkatesh, M., Gouthaman, S., Kanemoto, S. O., Lakshmi, M. S., Hamerton, I.
Format: Article
Language:English
Subjects:
Bisphenol A
cyanate esters
Cyanates
degradation kinetics
Dicyanates
epoxy resins
Impact strength
Materials science
nanoclay
Nanocomposites
Polymer blends
Polymer matrix composites
Polymers
Stability analysis
Thermal degradation
Thermal stability
X-ray diffraction
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Summary:ABSTRACT The preparation and characterization of blends of a series of dicyanate monomers such as 2,2′‐bis(4‐cyanatophenyl) propane (DCDPP), bis‐4‐cyanato‐biphenyl (DCBP), bis‐4‐cyanatonaphthalene (DCN), 3,3′‐bis(4‐cyanatophenyl)sulphide (DCTDP), 3,3′‐bis(4‐cyanatophenyl)sulphone (DCDPS), and the diglycidyl ether of bisphenol A are reported. These copolymers are combined with a montmorillionite nanoclay and both epoxy‐cyanate blends and epoxy‐cyanate blends‐nanoclay composites are all analyzed for thermal stability, thermal degradation kinetics, flame retardancy, and impact strength. The nanocomposites are further characterized by X‐ray diffraction and SEM to determine morphological features, from which structure–property relationships are determined. Dispersion of the nanoclay is of paramount importance, but its inclusion serves to improve char yield and impact strength, when this is achieved. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47754.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.47754