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首页> 外文期刊>Journal of Applied Polymer Science >Improvement of the liquid oxygen compatibility of epoxy via the addition of surface-modified boehmite
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Improvement of the liquid oxygen compatibility of epoxy via the addition of surface-modified boehmite

机译：通过添加表面改性的勃姆石通过添加环氧树脂的液氧相容性

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摘要

To improve the liquid oxygen compatibility and cryogenic mechanical properties of epoxy resin, we synthesized and characterized a hybrid compound (functionalized boehmite) containing boehmite, phosphorus, and silicon element. The thermal properties and liquid oxygen compatibility of the composites were investigated in detail. The results show that the addition of functionalized boehmite increased the char residue obviously but had little effect on the thermal decomposition temperature and glass-transition temperature of the composites. The liquid oxygen compatibility of the composites was significantly improved. Composites with 4wt % boehmite, 0.99wt % Si, and 1.1wt % P passed the impact test. Surface element analyses before and after the drop tests suggested that the functionalized boehmite in epoxy might have prevented the impact reaction in liquid oxygen through two steps. First, the compound decomposed into phosphoric oxyacid and Al2O3 under the impact energy and captured the H center dot and center dot OH radicals produced from the decomposition of the resin. Then, the decomposition covered the surface, forming a protective layer to isolate the oxygen. The mechanism of the liquid oxygen compatibility of the epoxy composites was subsequently analyzed. In addition, the cryogenic tensile properties of the epoxy composites containing functionalized boehmite showed that the composites had potential applications under cryogenic liquid oxygen environments. (c) 2018 Wiley Periodicals, Inc.
机译：为了改善环氧树脂的液态氧相容性和低温力学性能，我们合成并表征含勃姆石，磷和硅元件的杂化化合物（官能化勃姆矿）。详细研究了复合材料的热性质和液态氧兼容性。结果表明，在复合材料的热分解温度和玻璃化转变温度显着增加了官能化勃姆石增加了炭渣。复合材料的液态氧相容性显着提高。具有4wt％Boehmite，0.99wt％Si和1.1wt％p的复合材料通过了冲击试验。在下降试验之前和之后的表面元素分析表明环氧树脂中的官能化勃姆石可以通过两个步骤阻止液体氧中的冲击反应。首先，将化合物分解成磷酸盐和Al 2 O 3在冲击能量下，并捕获由树脂分解产生的H中心点和中心点OH基团。然后，分解覆盖表面，形成保护层以隔离氧气。随后分析了环氧复合材料的液态氧相容性的机理。此外，含有官能化勃姆石的环氧复合材料的低温拉伸性能显示复合材料在低温液氧环境下具有潜在的应用。 （c）2018 Wiley期刊，Inc。

著录项

  • 来源
    《Journal of Applied Polymer Science》 |2018年第44期|共13页
  • 作者

    Wang Hongyu; Peng Cong; Li Shichao; Liu Xin; Wu Zhanjun;

  • 作者单位

    Dalian Univ Technol Fac Vehicle Engn &

    Mech Sch Aeronaut &

    Astronaut State Key Lab Struct Anal Ind Equipment Dalian 116024 Peoples R China;

    Dalian Univ Technol Fac Mech Engn Mat &

    Energy Sch Mat Sci &

    Engn Dalian 116024 Peoples R China;

    Dalian Univ Technol Fac Vehicle Engn &

    Mech Sch Aeronaut &

    Astronaut State Key Lab Struct Anal Ind Equipment Dalian 116024 Peoples R China;

    Dalian Univ Technol Fac Vehicle Engn &

    Mech Sch Aeronaut &

    Astronaut State Key Lab Struct Anal Ind Equipment Dalian 116024 Peoples R China;

    Dalian Univ Technol Fac Vehicle Engn &

    Mech Sch Aeronaut &

    Astronaut State Key Lab Struct Anal Ind Equipment Dalian 116024 Peoples R China;

  • 收录信息
  • 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

    flame retardance; resins; thermal properties;

    机译：阻燃性;树脂;热性质;

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