A novel epoxy resin system containing bismaleimide and DOPO-based flame retardant with excellent flame retardancy and toughness,Journal of Applied Polymer Science

当前位置： X-MOL 学术 › J. Appl. Polym. Sci. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

A novel epoxy resin system containing bismaleimide and DOPO-based flame retardant with excellent flame retardancy and toughness
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2023-07-04 , DOI: 10.1002/app.54373
Zhengbiao Liu ₁ , Yijun Zhang ₁ , Zhiwei Jia ₁ , Hua Liu ₂ , Zuozhen Liu _{1,

2,

3}

Affiliation

9,10-dihydro-9-oxo-10-phosphaphenanthrene-10-oxide (DOPO) and special tetra functional epoxy resin (EP) AG-601 were combined to synthesize a reactive flame retardant (FREP) and then incorporated into EP, obtaining the flame retardant material EP/FREP. To achieve EPs with higher flame retardancy and mechanical properties, a new intrinsically flame retardant EP system named EP/FRDM was produced by modifying EP/FREP with high thermal resistance bismaleimide (BDM). In the presence of a distinct FRDM structure comprising phosphaphenanthrene/nitrogen, the EP possessed superior flame retardancy and impact toughness. The curing process of EP/FRDM was investigated using Real-Time Fourier-transform Infrared. In terms of fire performance, the limiting oxygen index of the EP/FRDM-3 was raised from 31.4% to 38.2%, and the vertical burning rating was improved after BDM was added to the EP/FREP system. It was discovered that EP/FRDM exhibited a classic two-phase flame retardant influence by analyzing the residual carbon morphology and pyrolysis behavior. Simultaneously, the glass transition temperature (T_g) of EP/FRDM remained essentially stable, and the char residue yield rose markedly, which indicated that the system had outstanding thermal stability, according to the results of the dynamic mechanical analysis and thermogravimetric analysis tests. Notably, the EP/FRDM experienced an internal chain expansion reaction when BDM was added, giving flame retardant materials excellent flexural and impact strengths and promising future application opportunities.

中文翻译：

一种含有双马来酰亚胺和DOPO基阻燃剂的新型环氧树脂体系，具有优异的阻燃性和韧性

将9,10-二氢-9-氧代-10-磷杂菲-10-氧化物（DOPO）与特种四官能环氧树脂（EP）AG-601组合合成反应型阻燃剂（FREP），然后将其掺入EP中，得到阻燃材料EP/FREP。为了获得具有更高阻燃性和机械性能的EP，通过用高耐热性双马来酰亚胺（BDM）对EP/FREP进行改性，制备了一种新的本质阻燃EP体系——EP/FRDM。在包含磷杂菲/氮的独特 FRDM 结构存在下，EP 具有优异的阻燃性和冲击韧性。使用实时傅里叶变换红外研究了 EP/FRDM 的固化过程。防火性能方面，EP/FRDM-3的极限氧指数从31.4%提高到38.2%，EP/FREP系统中加入BDM后，垂直燃烧等级得到提高。通过分析残余碳形态和热解行为，发现EP/FRDM表现出经典的两相阻燃影响。同时，玻璃化转变温度（_{动态力学分析和热重分析测试结果表明，EP/FRDM的}Tg )基本保持稳定，残炭率显着上升，表明该体系具有优异的热稳定性。值得注意的是，当添加BDM时，EP/FRDM会发生内扩链反应，赋予阻燃材料优异的弯曲强度和冲击强度，并具有广阔的未来应用前景。

更新日期：2023-07-04

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南