Effect of the structure of polycyanates prepared by polycyclotrimerization of aryl dicyanates on their thermal stability

Annealing behavior and thermal stability of nanoporous polymer films based on high-performance Cyanate Ester Resins

“…These results were also in a good agreement with those expected for the neat CER networks, as already observed by Korshak et al [15], [16] and Ramirez et al [17]. Although the curves were quite similar, some deviations arising from the structural differences caused by the porogen used could be pointed out.…”

Thermal decomposition of cyanate ester resins

“…Thermogravimetric studies of polycyanurates in air have indicated that thermoxidative degradation proceeds via rapid hydrolysis of the ether oxygen bond between the phenyl and triazine rings in the presence of moisture at temperatures of 350°-420°C [17][18][19]. Purely thermal degradation under anaerobic conditions is claimed at higher temperature (> 450°C) via homolytic cleavage of the hydrocarbon backbone over a narrow temperature range (450°-500°C) independent of the chemical structure of the linking groups between the cyanurate rings [18][19][20]. The present study extends these previous thermogravimetric studies of polycyanurate thermal degradation to include infrared and mass spectroscopic analysis of the solid and gaseous pyrolysis products.…”

“…Because cyanate ester resins polymerize by an addition reaction, no volatiles or by-products are produced during cure which can cause voids and subsequent loss of strength in the final product [14][15][16]. Thermogravimetric studies of polycyanurates in air have indicated that thermoxidative degradation proceeds via rapid hydrolysis of the ether oxygen bond between the phenyl and triazine rings in the presence of moisture at temperatures of 350°-420°C [17][18][19]. Purely thermal degradation under anaerobic conditions is claimed at higher temperature (> 450°C) via homolytic cleavage of the hydrocarbon backbone over a narrow temperature range (450°-500°C) independent of the chemical structure of the linking groups between the cyanurate rings [18][19][20].…”

Synthesis, morphology, and thermal stability of nanoporous cyanate ester resins obtained upon controlled monomer conversion

“…Previous studies on thermal stability of crosslinked CERs showed that the thermal degradation process of a fully cured CER consisted of two main degradation stages with maxima at ~420-430°C and ~540-560°C [19][20][21]. Figure 8 and Table 3 represent the typical TGA results for the nanoporous CER samples under investigation.…”