One-spot synthesis of a benzene-rich triazine-based hyperbranched charring agent and its efficient intumescent flame retardant performance for thermoplastic polyester elastomer

Zhengyi Wang; Wei Wu; Wenjing Zhang; Xinzhu Xu; Hongchen Lin; Wei Wang

Arabian Journal of Chemistry (Jul 2023)

One-spot synthesis of a benzene-rich triazine-based hyperbranched charring agent and its efficient intumescent flame retardant performance for thermoplastic polyester elastomer

Zhengyi Wang,
Wei Wu,
Wenjing Zhang,
Xinzhu Xu,
Hongchen Lin,
Wei Wang

Affiliations

Zhengyi Wang: Sino-German Joint Research Center of Advanced Materials, School of Materials, Science and Engineering, East China University of Science and Technology, Shanghai 200237, PR China
Wei Wu: Corresponding author.; Sino-German Joint Research Center of Advanced Materials, School of Materials, Science and Engineering, East China University of Science and Technology, Shanghai 200237, PR China
Wenjing Zhang: Sino-German Joint Research Center of Advanced Materials, School of Materials, Science and Engineering, East China University of Science and Technology, Shanghai 200237, PR China
Xinzhu Xu: Sino-German Joint Research Center of Advanced Materials, School of Materials, Science and Engineering, East China University of Science and Technology, Shanghai 200237, PR China
Hongchen Lin: Sino-German Joint Research Center of Advanced Materials, School of Materials, Science and Engineering, East China University of Science and Technology, Shanghai 200237, PR China
Wei Wang: Sino-German Joint Research Center of Advanced Materials, School of Materials, Science and Engineering, East China University of Science and Technology, Shanghai 200237, PR China

Journal volume & issue: Vol. 16, no. 7
p. 104861

Abstract

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An intumescent flame retardant (IFR) system was created using a benzene-rich triazine-based hyperbranched charring agent (CDS) and aluminum diethlyphosphinate (AlPi) to enhance the flame resistance of thermoplastic polyester elastomers (TPEE). Thermogravimetric analysis (TGA) results revealed that CDS had substantial char residue (50.8 wt%) and good thermal stability at 700 °C. The limiting oxygen index (LOI) value achieved 30.2% and it passed the V-0 rating in vertical combustion (UL-94) with the integration of 20 wt% (wt%) IFR (AlPi:CDS = 3:1) into TPEE matrix. Scanning electron microscope (SEM), laser Raman spectroscopy (LRS), and heating infrared spectroscopy were used to examine the morphology and chemical makeup of char residues, as well as the evolution of the structure during the heating process. The outcomes demonstrated the compatibility of CDS and AlPi in both the gas phase and the condensed phase. After burning, the high-efficiency flame-retardant TPEE composite created a dense, continuous char layer that contained triazine rings and aromatic ring structures.

Published in Arabian Journal of Chemistry

ISSN: 1878-5352 (Print)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry
Website: http://www.journals.elsevier.com/arabian-journal-of-chemistry/

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