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首页> 外文期刊>Journal of Applied Polymer Science >Molded environment-friendly flame-retardant foaming material with high strength based on corn starch modified by crosslinking and grafting
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Molded environment-friendly flame-retardant foaming material with high strength based on corn starch modified by crosslinking and grafting

机译：基于交联和嫁接改性的基于玉米淀粉的高强度模压环保阻燃发泡材料

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摘要

A flame-retardant foaming material based on corn starch was prepared by a mold pressing method. The starch was crosslinked using Na-3[PO3](3) and became gelatinized. Initiated by (NH4)(2)S2O8, the starch was grafted with methyl acrylate and vinyl acetate by a free-radical polymerization. The starch was mixed with the foaming regent composed of NaHCO3 and azodicarbonamide, and molded at 135 degrees C and 9 MPa for 10 min. A foaming material with a uniform honeycomb-like structure and relatively high strength was prepared. Its apparent density, tensile strength, impact strength and elongation were 0.685 g cm(-3), 1.065 kJ m(-2), 3.025 MPa, and 28.8%. It held excellent flame resistance of V-0 rating. Na-3(PO3)(3) acted both as crosslinker and flame retardant, which effectively simplified the formula. When the material was burnt, a compact charred crust was formed on its surface, which prevented the permeation of oxygen and the release of combustible organic compounds. (c) 2018 Wiley Periodicals, Inc.
机译：通过模具压制方法制备基于玉米淀粉的阻燃发泡材料。使用Na-3 [PO3]（3）交联淀粉并变得凝胶化。由（NH 4）（2）S2O8引发，通过自由基聚合用丙烯酸甲酯和乙酸乙烯酯接枝淀粉。将淀粉与由NaHCO 3和偶氮二甲酰胺组成的发泡率混合，并在135℃和9MPa下模塑10分钟。制备具有均匀蜂窝状结构和相对高强度的发泡材料。其表观密度，拉伸强度，冲击强度和伸长率为0.685g cm（-3），1.065kJ m（-2），3.025mPa和28.8％。它具有良好的V-0等级阻燃性。 Na-3（PO3）（3）作为交联剂和阻燃剂，其有效地简化了公式。当材料被烧毁时，在其表面上形成紧凑的烧焦的外壳，这防止了氧气渗透和可燃有机化合物的释放。 （c）2018 Wiley期刊，Inc。

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  • 来源
    《Journal of Applied Polymer Science》 |2019年第12期|共8页
  • 作者

    Wang Yanbin; Su Qiong; Wang Hongling; Zhao Xiangfei; Liang Shuang;

  • 作者单位

    Northwest Minzu Univ Coll Chem Engn Key Lab Util Environm Friendly Composite Mat &

    Bi Lanzhou 730030 Gansu Peoples R China;

    Northwest Minzu Univ Coll Chem Engn Key Lab Util Environm Friendly Composite Mat &

    Bi Lanzhou 730030 Gansu Peoples R China;

    Northwest Minzu Univ Coll Chem Engn Key Lab Util Environm Friendly Composite Mat &

    Bi Lanzhou 730030 Gansu Peoples R China;

    Northwest Minzu Univ Coll Chem Engn Key Lab Util Environm Friendly Composite Mat &

    Bi Lanzhou 730030 Gansu Peoples R China;

    Northwest Minzu Univ Coll Chem Engn Key Lab Util Environm Friendly Composite Mat &

    Bi Lanzhou 730030 Gansu Peoples R 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

    corn starch; crosslink; flame retardant; foaming material; fraft;

    机译：玉米淀粉;交叉链接;阻燃剂;发泡材料;工艺;

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