Synthesis of DOPO-PHBA reactive flame retardant and its effect on properties of epoxy resin with TGIC

被引：0

作者：

Tan X. ^{[1
]}

Liao Q. ^{[1
,2
]}

Zeng L. ^{[1
]}

Xu R. ^{[1
]}

机构：

[1] School of Materials Science and Engineering, Wuhan University of Technology, Wuhan

[2] School of Materials Science and Engineering, Hubei Polytechnic Uiversity, Huangshi

来源：

Zeng, Liming (lmzeng@whut.edu.cn) | 2018年 / Beijing University of Aeronautics and Astronautics (BUAA)卷 / 35期

关键词：

9,10-dihydro-9-oxa-10-phosphine-10-oxide(DOPO); Condensed phase flame retardant mechanism; Epoxy resin; Flame retardant; Thermal property; Triglycidyl isocyanurate(TGIC);

D O I：

10.13801/j.cnki.fhclxb.20170601.006

中图分类号：

学科分类号：

摘要：

A novel reactive flame retardant (DOPO-PHBA) was synthesized by the reaction between 9,10-dihydro-9-oxa-10-phosphine-10-oxide (DOPO) and p-hydroxybenzaldehyde (PHBA).Its structure and composition were characterized by FTIR and nuclear magnetic resonance spectroscopy 1H-NMR and 31P-NMR. DOPO-PHBA was compounded with triglycidyl isocyanurate (TGIC) to prepare DOPO-PHBA-TGIC/epoxy resin(EP) composites. The flame retardancy and thermal properties of DOPO-PHBA-TGIC/EP composites were respectively investigated by limiting oxygen index (LOI), dynamic mechanical analysis (DMA) and thermogravimetric analysis. Results indicate that DOPO-PHBA is successfully synthesized. The addition of DOPO-PHBA-TGIC can significantly enhance the flame retardancy of EP resin, while the mass fraction of phosphorus is 0.6wt%, LOI value increases from 24% to 32.5%. Additionally, the glass transition temperature (Tg) of DOPO-PHBA-TGIC/EP composites with different phosphorus mass fractions are maintained at 200℃ or higher, and the residues at 800℃ under nitrogen atmosphere are increased. But the initial degradation temperatures and maximum decomposition rates of DOPO-PHBA-TGIC/EP composites are decreased. FTIR analysis of char residues reveal that this flame retardant system satisfies condensed phase flame retardant mechanism, and the incorporation of DOPO-PHBA-TGIC does not impair the physical property of EP resin. © 2018, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.

引用

页码：485 / 492

页数：7

共 21 条

[21] China National Technology Committee of Standardization for Fiber Reinforced Plastic Products, Test method for flexural properties of resin casting body: GB/T 2570-1995, (1995)

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