Facile fabrication of single-component flame-retardant epoxy resin with rapid curing capacity and satisfied thermal resistance

Green and Facile Synthesis of Bio-Based, Flame-Retardant, Latent Imidazole Curing Agent for Single-Component Epoxy Resin

“…Generally, introducing halogen-containing flame retardants is a common and efficient approach to address the flammability issue of polymeric materials. − Nonetheless, the application of halogen-containing flame retardants follows with a series of environmental and human-health issues. , Therefore, halogen-free flame retardants have drawn wide attention from both academic and industrial circles. In particular, phosphorus-containing flame retardants can simultaneously quench the high-energy fuel and promote the carbonization of the matrixes during combustion. − Hence, numerous phosphorus-containing flame retardants have been synthesized and introduced into EPs, e.g., phosphaphenanthrene, − ammonium polyphosphate, − organophosphate, − and cyclotriphosphazene. − Unlike the above petrochemical products, phytic acid (PA) originates from oil-bearing crops, which features a high phosphorus content of 28 wt %; thus, it has been recognized as one class of promising bio-based platform compounds. − To reduce the overexploitation of fossil resource and meet the sustainable development, many bio-based flame retardants derived from phytic acid have been developed. , For instance, Ye et al synthesized a phytic acid salt (PF) and applied it to flame-retardant poly­(lactic acid) (PLA). The resultant PLA exhibited enhanced flame retardancy, with a high LOI of 28.5% and a UL-94 V-0 rating.…”

Inherent flame‐retardant vinyl ester resins with improved heat resistance enabled by additional P/N‐containing cross‐linking points

“…AEHC, the ratio of the average heat release rate to the average mass loss rate, is used to quantificationally reveal the combustion degree of volatile matters during material combustion 34,35 . As presented in Figure 4d and Table 3, the AEHC of the P/N‐containing VER samples were obviously decreased, compared with that of VER sample.…”

Effect of 3-methoxysalicylaldehyde on transparency and mechanical properties of EP modified with aminopyridine-based DOPO derivative

“…No peak was observed in residue of control group, while peak was perceivable at about 133 eV which was deduced from P-O bond and P = O bond. [31][32][33][34]…”