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首页> 外文期刊>Journal of Applied Polymer Science >Joint flame-retardant effect of triazine-rich and triazine/phosphaphenanthrene compounds on epoxy resin thermoset
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Joint flame-retardant effect of triazine-rich and triazine/phosphaphenanthrene compounds on epoxy resin thermoset

机译：富三嗪和三嗪/磷菲化合物对环氧树脂热固性的联合阻燃作用

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To obtain a more efficient flame-retardant system, the extra-triazine-rich compound melamine cyanurate (MCA) was coworked with tri(3-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide-2-hydroxypropan-1-yl)-1,3,5-triazine-2,4,6-trione (TGIC-DOPO) in epoxy thermosets; these were composed of diglycidyl ether of bisphenol A (DGEBA) epoxy resin and 4,4-diaminodiphenyl methane (DDM). The flame-retardant properties were investigated by limited oxygen index measurement, vertical burning testing, and cone calorimeter testing. In contrast to the DGEBA/DDM (EP for short) thermoset with a single TGIC-DOPO, a better flame retardancy was obtained with TGIC-DOPO/MCA/EP. The 3% TGIC-DOPO/2% MCA/EP thermoset showed a lower peak heat-release rate value, a lower effective heat of combustion value, fewer total smoke products, and lower total yields of carbon monoxide and carbon dioxide in comparison with 3% TGIC-DOPO/EP. The results reveal that MCA and TGIC-DOPO worked jointly in flame-retardant thermosets. The dilution effect of MCA, the quenching effect of TGIC-DOPO, and their joint action inhibited the combustion intensity and imposed a better flame-retardant effect in the gas phase. The 3% TGIC-DOPO/2% MCA/EP thermoset also exhibited an increased residue yield, and more compositions with triazine rings were locked in the residues; this implied that MCA/TGIC-DOPO worked jointly in the condensed phase and promoted thermoset charring. The results reveal the better flame-retardant effect of the MCA/TGIC-DOPO system in the condensed phase. Therefore, the joint incorporation of MCA and TGIC-DOPO into the EP thermosets increased the flame-retardant effects in both the condensed and gas phases during combustion. This implied that the adjustment to the group ratio in the flame-retardant group system endowed the EP thermoset with better flame retardancy. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43241.
机译：为了获得更有效的阻燃系统，将富含三嗪的化合物三聚氰胺氰尿酸酯（MCA）与三（3-9,10-二氢-9-氧杂-10-磷酸菲并苯-10-氧化物-2-羟基丙烷）共同使用环氧热固性塑料中的-1-yl）-1,3,5-三嗪-2,4,6-三酮（TGIC-DOPO）;它们由双酚A的二缩水甘油醚（DGEBA）环氧树脂和4,4-二氨基二苯基甲烷（DDM）组成。通过有限的氧指数测量，垂直燃烧测试和锥形量热仪测试来研究阻燃性能。与具有单个TGIC-DOPO的DGEBA / DDM（简称EP）热固性塑料相比，TGIC-DOPO / MCA / EP具有更好的阻燃性。与3相比，3％TGIC-DOPO / 2％MCA / EP热固性塑料显示较低的峰值放热率值，较低的有效燃烧热值，较少的总烟产物以及较低的一氧化碳和二氧化碳总产量TGIC-DOPO / EP％。结果表明，MCA和TGIC-DOPO在阻燃热固性塑料中共同起作用。 MCA的稀释作用，TGIC-DOPO的淬灭作用及其共同作用抑制了燃烧强度，并在气相中产生了更好的阻燃作用。 3％TGIC-DOPO / 2％MCA / EP热固性树脂还显示出更高的残渣收率，并且更多的带有三嗪环的组合物被锁定在残渣中。这意味着MCA / TGIC-DOPO在冷凝阶段共同工作并促进了热固性炭化。结果表明，MCA / TGIC-DOPO系统在冷凝相中具有更好的阻燃效果。因此，将MCA和TGIC-DOPO联合掺入EP热固性塑料中，可提高燃烧过程中冷凝相和气相中的阻燃效果。这意味着通过调节阻燃基团体系中的基团比例，可以使EP热固性树脂具有更好的阻燃性。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2016，133，43241。

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