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首页> 外文期刊>Journal of Polymers and the Environment >Synergistic Effects of Nano-zinc Oxide on Improving the Flame Retardancy of EVA Composites with an Efficient Triazine-Based Charring Agent
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Synergistic Effects of Nano-zinc Oxide on Improving the Flame Retardancy of EVA Composites with an Efficient Triazine-Based Charring Agent

机译：纳米氧化锌对改善EVA复合材料阻燃性与高效三嗪基炭状剂的协同作用

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摘要

The synergistic effect of nano-zinc oxide (nano-ZnO) on the flame retardancy and thermal stability of intumescent flame retardant ethylene-vinyl acetate (EVA/IFR) consisting of novel hyperbranched triazine-based charring agent (HTCFA) and APP was evaluated by limiting oxygen index (LOI), UL-94 measurement, cone calorimeter test (CCT) and thermogravimetric analysis (TGA), and the residue analysis was also carried out through scanning electron microscopy (SEM), fourier transform infrared (FTIR), laser raman spectroscopy (LRS), and X-ray photoelectron spectroscopy (XPS). The results showed that introducing a certain amount of nano-ZnO could obviously enhance LOI value and UL-94 rating, and effectively restrain the combustion performance of EVA/IFR composites, leading to the decrease of heat and smoke release. The addition of 0.5wt% nano-ZnO into EVA/IFR composite obtained the highest catalytic effectivity (CAT-EFF). TGA results uncovered a distinct synergistic carbonization effect existed between nano-ZnO and IFR, and nano-ZnO could obviously improve the high-temperature thermal stability and promote the char formation of IFR and EVA/IFR. Analysis of final char residues proved that the incorporation of appropriate amount of nano-ZnO contributed to remaining more P and forming more high-quality graphitization char layers with richer P-O-C and P-N cross-linking structures in condensed phase owing to the catalytic carbonization effect of nano-ZnO on IFR system, which played a critical role in remarkable improvement of flame retardancy and smoke suppression properties of composites.
机译：纳米氧化锌（纳米-ZNO）对由新型超支三嗪类炭疽剂（HTCFA）和应用组成的膨胀阻燃乙烯 - 乙烯 - 乙酸乙烯酯（EVA / IFR）的阻燃性和热稳定性的协同作用限制氧气指数（LOI），UL-94测量，锥形量热计测试（CCT）和热重分析（TGA），并通过扫描电子显微镜（SEM），傅里叶变换红外线（FTIR），激光拉曼进行残留分析。光谱学（LRS）和X射线光电子能谱（XPS）。结果表明，引入一定量的纳米ZnO可以明显增强LOI值和UL-94评级，并有效抑制EVA / IFR复合材料的燃烧性能，导致热量和烟雾释放的降低。向EVA / IFR复合物中加入0.5wt％纳米ZnO获得最高的催化有效性（猫效干）。 TGA结果发现纳米 - ZnO和IFR之间存在明显的协同碳化效果，纳米ZnO明显改善高温热稳定性，促进IFR和EVA / IFR的炭形成。对最终炭残基的分析证明，由于纳米的催化碳化作用，掺入适量的纳米ZnO有助于剩余的纳米ZnO和形成更高的PoC和PN交联结构的更高质量的石墨化炭层，并且由于纳米的催化碳化效应而形成更丰富的POC和PN交联结构。 -ZNO在IFR系统上，这在复合材料的阻燃和烟雾抑制性能显着改善中起着关键作用。

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  • 来源
    《Journal of Polymers and the Environment》 |2019年第5期|1127-1140|共14页
  • 作者

    Xu Bo; Ma Wen; Bi Xiaolu; Shao Lushan; Qian Lijun;

  • 作者单位

    Beijing Technol & Business Univ Sch Mat Sci & Mech Engn Fucheng Rd 11 Beijing 100048 Peoples R China|Beijing Technol & Business Univ Beijing Key Lab Qual Evaluat Technol Hyg & Safety Fucheng Rd 11 Beijing 100048 Peoples R China;

    Beijing Technol & Business Univ Sch Mat Sci & Mech Engn Fucheng Rd 11 Beijing 100048 Peoples R China|Beijing Technol & Business Univ Beijing Key Lab Qual Evaluat Technol Hyg & Safety Fucheng Rd 11 Beijing 100048 Peoples R China;

    Chongqing Hongyu Precis Ind Co LTD Hongyu Rd 9 Chongqing 402760 Peoples R China;

    Beijing Technol & Business Univ Sch Mat Sci & Mech Engn Fucheng Rd 11 Beijing 100048 Peoples R China|Beijing Technol & Business Univ Beijing Key Lab Qual Evaluat Technol Hyg & Safety Fucheng Rd 11 Beijing 100048 Peoples R China;

    Beijing Technol & Business Univ Sch Mat Sci & Mech Engn Fucheng Rd 11 Beijing 100048 Peoples R China|Beijing Technol & Business Univ Beijing Key Lab Qual Evaluat Technol Hyg & Safety Fucheng Rd 11 Beijing 100048 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    EVA; Intumescent flame retardancy; Zinc oxide; Triazine-based char-forming agent; Synergistic effect;

    机译：EVA;膨胀型阻燃;氧化锌;三嗪基炭剂;协同效应;

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