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首页> 外文期刊>RSC Advances >Synthesis of a furfural-based DOPO-containing co-curing agent for fire-safe epoxy resins
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Synthesis of a furfural-based DOPO-containing co-curing agent for fire-safe epoxy resins

机译：用于防火环氧树脂的糠醛的共固化剂的合成

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A furfural-based DOPO-containing flame retardant, 6,6′-(((methylenebis(4,1-phenylene))bis(azanediyl))bis(furan-2-ylmethylene))bis(dibenzo[ c , e ][1,2]oxaphosphinine 6-oxide) (MBF-DOPO), was synthesized and utilized as a co-curing agent of 4,4′-diaminodiphenyl methane (DDM) for fire-safe epoxy thermosets. For the cured epoxy resin containing 4.0% MBF-DOPO, the limiting oxygen index (LOI) reached 32.9% (with the V-0 rating in UL-94 test), and the peak heat release rate and total smoke production values were respectively decreased by 29.3% and 33.6%, compared to pure epoxy resin. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) results confirmed that the furfural-based flame retardant MBF-DOPO promoted the charring formation of the epoxy matrix, which effectively isolated the gas and heat transfer during combustion and thus enhanced the fire-safety performance of the epoxy thermosets. This work provides an effective route for synthesizing a furfural-based flame retardant, which possesses great potential for application in fire-safe epoxy thermosets.
机译：含有糠醛的多一无止的阻燃剂，6,6' - （（（甲基Bis（4,1-亚苯基））双（壬基苯基））双（呋喃-2-基亚甲基））双（二苯甲苯[C，E] [ 1,2]氧磷酸磷素6-氧化物）（MBF-DOPO）合成并用作4,4'-二氨基二苯基甲烷（DDM）的共固化剂，用于防火环氧树脂热固性。对于含有4.0％MBF-DOPO的固化环氧树脂，限制氧指数（LOI）达到32.9％（随着UL-94试验中的V-0等级），并且分别降低了峰值热释放率和总烟雾生产值与纯环氧树脂相比，29.3％和33.6％。扫描电子显微镜（SEM）和傅立叶变换红外光谱（FTIR）结果证实，糠醛基阻燃性MBF-DOPO促进环氧基质的炭状形成，这有效地隔离燃烧过程中的气体和热传递，从而增强了火灾 - 环氧热固性件的安全性能。这项工作提供了合成糠醛的阻燃剂的有效途径，该阻燃剂具有巨大的应用在防火环氧热固性件中的潜力。

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