Mechanistic study on the thermal decomposition of polybenzoxazines: Effects of aliphatic amines

Examining the Influence of Organophosphorus Flame Retardants on the Thermal Behavior of Aromatic Polybenzoxazines

“…TGA was conducted to evaluate the mass loss as a function of temperature for the poly(BA‐a) and in cured blends containing various concentrations of the additives ( Table 2 ). A preliminary experiment was conducted on the unmodified poly(BA‐a) ( Figure ) and agreed with published work which has confirmed that the initial mass loss occurs at around 250–280 °C, with the loss of amine species accounting for the majority of the loss. The bulk of the mass loss occurs between 300 and 450 °C, associated with the degradation of phenolic moieties .…”

Synthesis, curing behavior, and thermal properties of fluorene-based benzoxazine-endcapped copoly(ether ketone ketone)s

“…The results clearly indicate that two main processes occur during the thermal degradation of co-PEKKs functional polybenzoxazines. The first degradation below 400°C is due to the volatilization of amine fragments from the benzoxazine rings at the chain end, whereas the second degradation between 400 and 600°C is related to the decomposition of both polybenzoxazines and co-PEKKs [39,49,50]. Moreover, as the content of BHK rises, the volatilization of amine fragments increases, but the degradation of polybenzoxazines and co-PEKKs decreases.…”

Reactive diluent strategy for general benzoxazine to achieve high performance thermoset via a combination of styrene and glycidyl methacrylate

“…Whereas, the production of phenol compounds is suppressed in the thermal decomposition of PSG3, which resulted in only cresol before the temperature reached to 500°C. When compared to the conclusion in a previous work that secondary amines are decomposed from polybenzoxazines at temperatures below 400°C, 62 these results suggest an inhibiting effect on production of amines during thermal degradation of the blending polybenzoxazine resin at low temperature. The residual N element is beneficial to inflaming retarding performance at temperatures higher than 400°C.…”