Work

Preparation of New Nitrogen–Phosphorus Flame Retardants and Their Application in Polyester

Year: 2026

Type: article

Abstract: Polyester is easily flammable, generating melting droplets and dense smoke, resulting in secondary hazards. In this article, utilizing phosphoric acid, pentaerythritol, phosphorus pentachloride (PCl5), and ethanolamine as raw materials, a novel nitrogen-phosphorus flame retardant is synthesized for the flame retardant treatment of polyester fibers. The flame-retardant polyester treated is characterized in terms of performance by means of TG-DSC, SEM, Limiting Oxygen Index testing, vertical burning testing, and tensile testing. With a flame retardant additive amount of 100 g/L, the damage length of the polyester sample strand is merely 4 cm, exhibiting no continuous burning or afterglow time, with an LOI value reaching 30.3%. This value surpasses that of untreated polyester by 11.2%. Furthermore, even after undergoing 50 cycles of water washing treatment, the LOI value remains above 30.0%. The polyester treated with the nitrogen-phosphorus flame retardant demonstrates reduced smoke, nearly no melting droplets, and flame retardancy characterized by both gas-phase and condensed-phase mechanisms.

Source: NANO

DOI: 10.1142/s1793292026500773

Authors: Haoqi Wang, Qiyan Wang, Shanshan Wang, Yue Zhang, Yonggen Weng, Junjie Liu, Baorong Duan, Jiale Qu

Institutions: Binzhou Medical University, Yantai University, Chinese Academy of Sciences, Yantai Institute of Coastal Zone Research

Language: English

Topic: Flame retardant materials and properties

Subfield: Polymers and Plastics

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7128010057

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