A novel halogen‐free co‐curing agent with linear multi‐aromatic rigid structure as flame‐retardant modifier in epoxy resin

Chen, Ting; Chen, Xianming; Wang, Meijie; Hou, Peixin; Cao, Jie; Li, Jilu; Xu, Yiting; Zeng, Birong; Dai, Lizong

doi:10.1002/pat.4170

Cited by 47 publications

(32 citation statements)

References 28 publications

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“…In addition, the protons of phenyl group (7.33–8.66 ppm) appeared in the spectrum of DOPO‐g‐GPTS. These results supported that the reaction occurred between DOPO and GPTS …”

Section: Resultssupporting

confidence: 74%

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Synthesis of DOPO‐g‐GPTS modified wood fiber and its effects on the properties of composite phenolic foams

Geng

Zhang

et al. 2018

J of Applied Polymer Sci

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A novel 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) grafted γ-glycidoxy propyl trimethoxy silane (GPTS) was synthesized and introduced on the surface of wood fiber (WF). DOPO-g-GPTS modified wood fiber (DGMWF) was then used to prepare DGMWF composite phenolic foam (DGMWFCPF). The structures of DOPO-g-GPTS were verified by Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance ( 1 H-NMR). The structure of DGMWF was confirmed by FT-IR. The crystallinity of DGMWF was slightly increased, however, the diffraction peak positions were basically unchanged. In addition, the thermal stability was dramatically improved, and T i and T max increased by 26.6 and 33.2 C respectively. The carbon residue (800 C) was reduced by 3.65%. By comparison with pure phenolic foam, the mechanical properties, flame retardancy of DGMWFCPF were increased. No significant changes were observed for the microstructure. By comprehensive analysis, the interfacial compatibility was significantly improved between DGMWF and phenolic resin. The suitable dosage of DGMWF was 4-6%.

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“…In addition, the protons of phenyl group (7.33–8.66 ppm) appeared in the spectrum of DOPO‐g‐GPTS. These results supported that the reaction occurred between DOPO and GPTS …”

Section: Resultssupporting

confidence: 74%

“…TG and DTG of wood fiber were shown in Figure . Compared with WF, initial decomposition temperatures ( T i ) and the temperature of maximum weight loss rate ( T max) of DGMWF were increased by 26.6 and 33.2 °C respectively. However the carbon residue (800 °C) was slightly reduced.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of DOPO‐g‐GPTS modified wood fiber and its effects on the properties of composite phenolic foams

Geng

Zhang

et al. 2018

J of Applied Polymer Sci

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“…It may be easily modified, due to the P-H bond, to generate a series of derivatives that may be used to improve polymer thermal stability and fire behavior [18,19]. In addition, DOPO derivatives have been modified to contain different flame retardancy elements, such as P-N [20][21][22], P-Si [23][24][25], and P-N-S [26,27].…”

Section: Introductionmentioning

confidence: 99%

The Preparation, Thermal Properties, and Fire Property of a Phosphorus-Containing Flame-Retardant Styrene Copolymer

et al. 2019

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A 9,10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide (DOPO) acrylate, (6-oxidodibenzo [c,e][1,2] oxaphosphinin-6-yl) methyl acrylate (DOPOAA), has been prepared. Copolymers of styrene (St) and DOPOAA were prepared by emulsion polymerization. The chemical structures of copolymers containing levels of DOPOAA were verified using Fourier transform infrared (FT-IR) spectroscopy and 1H nuclear magnetic resonance (1H-NMR) spectroscopy. The thermal properties and flame-retardant behaviors of DOPO-containing monomers and copolymers were observed using thermogravimetric analysis and micro calorimetry tests. From thermogravimetric analysis (TGA), it was found out that the T5% for decomposition of the copolymer was lower than that of polystyrene (PS), but the residue at 700 °C was higher than that of PS. The results from micro calorimetry (MCC) tests indicated that the rate for the heat release of the copolymer combustion was lower than that for PS. The limiting oxygen index (LOI) for combustion of the copolymer rose with increasing levels of DOPOAA. These data indicate that copolymerization of the phosphorus-containing flame-retardant monomer, DOPOAA, into a PS segment can effectively improve the thermal stability and flame retardancy of the copolymer.

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“…The signals of H a , H b , H c , H d and H e were observed at δ 1.07-1.16 ppm, δ 3.45-3.79 ppm, δ 0.55-0.58 ppm, δ 2.50-2.65 ppm and δ 1.55-1.72 ppm. These protons were supported that the reaction were occurred between DOPO and KH550, and it was also confi rmed that DOPO-g-KH550 was successfully synthesized again 25, 26, 30, 31 .…”

Section: The Structure Of Dopo-g-kh550mentioning

confidence: 60%

A novel DOPO-g-KH550 modification wood fibers and its effects on the properties of composite phenolic foams

Geng

Zhang

et al. 2018

Polish Journal of Chemical Technology

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A novel 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) graft γ-amino propyl triethoxy silane (KH550) was synthesized and introduced on the surface of wood fi ber. Finally DOPO-g-KH550 treated wood fi ber (DKTWF) was used to prepare DKTWF composite phenolic foams (DKTWFCPF). The structures of DOPO-g-KH550 was acknowledged by Fourier transform infrared (FT-IR) and nuclear magnetic resonance ( 1 H-NMR). The structures of DKTWF were confi rmed by FT-IR. Compared with wood fi ber, the diffraction peaks' position was basically unchanged, but the crystallinity was slightly increased and thermal stability were dramatically improved, T 5% and T max increased by 21.9 o and 36.1 o respectively. But the char yield (800 o ) was slightly reduced. With the dosage of DKWF, there were different degrees of improvement including the mechanical properties, fl ame retardancy and microstructure of DKTWFCPF. Comprehensive analysis, the interfacial compatibility was signifi cantly improved between DKTWF and phenolic resin, and the suitable content of DKTWF was 4%.

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A novel halogen‐free co‐curing agent with linear multi‐aromatic rigid structure as flame‐retardant modifier in epoxy resin

Cited by 47 publications

References 28 publications

Synthesis of DOPO‐g‐GPTS modified wood fiber and its effects on the properties of composite phenolic foams

Synthesis of DOPO‐g‐GPTS modified wood fiber and its effects on the properties of composite phenolic foams

The Preparation, Thermal Properties, and Fire Property of a Phosphorus-Containing Flame-Retardant Styrene Copolymer

A novel DOPO-g-KH550 modification wood fibers and its effects on the properties of composite phenolic foams

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