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首页> 外文期刊>Polymers for advanced technologies >A novel halogen‐free co‐curing agent with linear multi‐aromatic rigid structure as flame‐retardant modifier in epoxy resin
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A novel halogen‐free co‐curing agent with linear multi‐aromatic rigid structure as flame‐retardant modifier in epoxy resin

机译：一种新型无卤共固化剂，具有线性多芳族刚性结构，作为环氧树脂中的阻燃改性剂

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摘要

> A novel halogen‐free 9,10‐dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide (DOPO)‐containing co‐curing agent, 6,6′‐(1,4‐phenylenebis(((4‐(phenylamino)phenyl)amino)methylene))bis(dibenzo[c,e][1,2]oxaphosphinine 6‐oxide) (DPN) was synthesized via a simple 1‐pot or 2‐step procedure with yield of 86.2% and 70.8%, respectively. The molecular structures of 4,4′‐((1,4‐phenylenebis(methanylylidene))bis(azanylylidene))bis(N‐phenylaniline) (DPN intermediate) and DPN are characterized by FTIR, NMR, and MS. TGA tests show that the char yield of DPN/EP composites raises to 30.9% when the molar ratio of DPN to 4,4‐diaminodiphenyl methane(DDM) is 20:80. T g values of DPN/EP composites tested by DSC and DMA are similar to neat epoxy resin (EP), which is due to the secondary amine in DPN that participates in the cross‐linking reaction of epoxy resin. The storage modulus in the rubber stage (E′‐190 °C) of flame‐retardant epoxy resin is close to that of neat EP, while their tanδ's are lower, which indicates the similarity of samples' cross‐linking density due to the participation of DPN in the cross‐linking reaction. The results show that when the molar ratio of DPN and DDM is 5:95, the epoxy has a higher T g value and better mechanical properties than other samples. The introduction of DPN efficiently improves the flame‐retardant properties of epoxy resin with V‐0 rating of UL‐94 vertical burning test, non‐dripping, 41% of limit oxygen index (LOI) value, low peak heat release rate (PHRR), and total heat release (THR).
机译： >一种新的无卤9,10-diydro-9-oxa- 10-磷芬 - 10-氧化物（DOPO） - 统一的共固化剂，6,6' - （1,4-亚苯基）（（（4-（苯基氨基）苯基）氨基）亚甲基））（二苯并[C，E [1,2]氧磷酸磷嗪6-氧化物）（DPN）通过单纯的1罐或2步骤合成，产率分别为86.2％和70.8％。 4,4' - （（1,4-亚苯基（甲基丙烯））双（苯基苯胺）（DPN中间体）（DPN中间体）和DPN的分子结构以FTIR，NMR和MS为特征。 TGA试验表明，当DPN至4,4-二氨基二苯基甲烷（DDM）的摩尔比为20:80时，DPN / EP复合材料的炭产率升高至30.9％。 DSC和DMA测试的DPN / EP复合材料的值类似于纯环氧树脂（EP），其是由于DPN中的仲胺参与环氧树脂的交联反应。阻燃环氧树脂的橡胶阶段（E'-190℃）中的储存模量接近整齐的EP，而其Tanδ的较低，表示样品的交联密度引起的相似性DPN在交联反应中。结果表明，当DPN和DDM的摩尔比为5:95时，环氧树脂具有比其他样品更高的T G 值和更好的机械性能。 DPN的引入有效地提高了环氧树脂的阻燃性能与UL-94立式燃烧试验的V-0等级，非滴度，限制氧指数（LOI）值的41％，低峰值热释放率（PHRR）和总热释放（Thr）。

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  • 来源
  • 作者

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

  • 作者单位

    Fujian Key Laboratory of Fire Retardant Materials College of MaterialsXiamen UniversityXiamen Fujian 361005 China;

    Fujian Key Laboratory of Fire Retardant Materials College of MaterialsXiamen UniversityXiamen Fujian 361005 China;

    Fujian Key Laboratory of Fire Retardant Materials College of MaterialsXiamen UniversityXiamen Fujian 361005 China;

    Fujian Key Laboratory of Fire Retardant Materials College of MaterialsXiamen UniversityXiamen Fujian 361005 China;

    Fujian Key Laboratory of Fire Retardant Materials College of MaterialsXiamen UniversityXiamen Fujian 361005 China;

    Fujian Key Laboratory of Fire Retardant Materials College of MaterialsXiamen UniversityXiamen Fujian 361005 China;

    Fujian Key Laboratory of Fire Retardant Materials College of MaterialsXiamen UniversityXiamen Fujian 361005 China;

    Fujian Key Laboratory of Fire Retardant Materials College of MaterialsXiamen UniversityXiamen Fujian 361005 China;

    Fujian Key Laboratory of Fire Retardant Materials College of MaterialsXiamen UniversityXiamen Fujian 361005 China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 高分子化合物工业（高聚物工业）;
  • 关键词

    epoxy resin; flame retardant; nitrogen; phosphorus; Schiff base;

    机译：环氧树脂;阻燃剂;氮气;磷;席夫基地;

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