Novel organophosphorus compound with amine groups towards self-extinguishing epoxy resins at low loading

Peng Zhao; Wenhui Rao; Haiqiang Luo; Liang Wang; Yuanli Liu; Chuanbai Yu

Materials & Design (Aug 2020)

Novel organophosphorus compound with amine groups towards self-extinguishing epoxy resins at low loading

Peng Zhao,
Wenhui Rao,
Haiqiang Luo,
Liang Wang,
Yuanli Liu,
Chuanbai Yu

Affiliations

Peng Zhao: Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, Ministry of Education, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Materials Science and Engineering, Guilin University of Technology (GUT), Guilin 541004, China
Wenhui Rao: Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, Ministry of Education, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Materials Science and Engineering, Guilin University of Technology (GUT), Guilin 541004, China; Center for Degradable and Flame-Retardant Polymeric Materials, College of Chemistry, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), Sichuan University, Chengdu 610064, China; Correspondence to: W. Rao, Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, Ministry of Education, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Materials Science and Engineering, Guilin University of Technology (GUT), Guilin 541004, China.
Haiqiang Luo: Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, Ministry of Education, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Materials Science and Engineering, Guilin University of Technology (GUT), Guilin 541004, China
Liang Wang: Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, Ministry of Education, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Materials Science and Engineering, Guilin University of Technology (GUT), Guilin 541004, China
Yuanli Liu: Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, Ministry of Education, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Materials Science and Engineering, Guilin University of Technology (GUT), Guilin 541004, China
Chuanbai Yu: Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, Ministry of Education, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Materials Science and Engineering, Guilin University of Technology (GUT), Guilin 541004, China; Corresponding author.

Journal volume & issue: Vol. 193
p. 108838

Abstract

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To enhance the fire safety of epoxy resins (EP) without affecting other properties, a novel organophosphorus compound named DDPPM has been synthesized and used as co-curing agent to obtain inherent flame-retardant EP. The Fourier transform infrared spectroscopy (FT-IR), 1H nuclear magnetic resonance (1H NMR), and 31P nuclear magnetic resonance (31P NMR) proven the successful synthesis of DDPPM. The mechanical results demonstrated that the mechanical properties of the epoxy resin did not deteriorate after adding DDPPM, and differential scanning calorimetry (DSC) shown that the glass transition temperature (Tg) of EP/DDPPM was maintained. Importantly, the EP/DDPPM presented satisfying flame-retardant efficiency in limiting oxygen index (LOI) and vertical burning tests. Incorporating 2 wt% DDPPM, the EP achieved the UL 94 V-0 rating and the LOI value was 31%. Meanwhile, the cone calorimeter (CC) test verified that DDPPM contributed to the reduction of heat and smoke release accompanied by increasing char yield. The thermogravimetric analysis/infrared spectrometry (TG-FTIR), pyrolysis gas chromatography/mass spectrometry (Py-GC/MS) and char analysis certified the flame inhibition and charring effect of DDPPM in EP.

Published in Materials & Design

ISSN: 0264-1275 (Print); 1873-4197 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/materials-and-design

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