Dataset Information

Construction of Charring-Functional Polyheptanazine towards Improvements in Flame Retardants of Polyurethane.

ABSTRACT: Nitrogen-containing flame retardants have been extensively applied due to their low toxicity and smoke-suppression properties; however, their poor charring ability restricts their applications. Herein, a representative nitrogen-containing flame retardant, polyheptanazine, was investigated. Two novel, cost-effective phosphorus-doped polyheptazine (PCN) and cobalt-anchored PCN (Co@PCN) flame retardants were synthesized via a thermal condensation method. The X-ray photoelectron spectroscopy (XPS) results indicated effective doping of P into triazine. Then, flame-retardant particles were introduced into thermoplastic polyurethane (TPU) using a melt-blending approach. The introduction of 3 wt% PCN and Co@PCN could remarkably suppress peak heat release rate (pHRR) (48.5% and 40.0%), peak smoke production rate (pSPR) (25.5% and 21.8%), and increasing residues (10.18 wt%?17.04 wt% and 14.08 wt%). Improvements in charring stability and flame retardancy were ascribed to the formation of P-N bonds and P=N bonds in triazine rings, which promoted the retention of P in the condensed phase, which produced additional high-quality residues.

SUBMITTER: Lu S

PROVIDER: S-EPMC7826771 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature

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Construction of Charring-Functional Polyheptanazine towards Improvements in Flame Retardants of Polyurethane.

Lu Shaolin S Shen Botao B Chen Xudong X

Molecules (Basel, Switzerland) 20210111 2

Nitrogen-containing flame retardants have been extensively applied due to their low toxicity and smoke-suppression properties; however, their poor charring ability restricts their applications. Herein, a representative nitrogen-containing flame retardant, polyheptanazine, was investigated. Two novel, cost-effective phosphorus-doped polyheptazine (PCN) and cobalt-anchored PCN (Co@PCN) flame retardants were synthesized via a thermal condensation method. The X-ray photoelectron spectroscopy (XPS) r ...[more]

PMID: 33440778

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Dataset Information

Construction of Charring-Functional Polyheptanazine towards Improvements in Flame Retardants of Polyurethane.

Publications

Construction of Charring-Functional Polyheptanazine towards Improvements in Flame Retardants of Polyurethane.

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