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首页> 外文学位 >Polyethylene-layered double hydroxides and montmorillonite nanocomposites: Thermal, mechanical and flame retardance properties.
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Polyethylene-layered double hydroxides and montmorillonite nanocomposites: Thermal, mechanical and flame retardance properties.

机译：聚乙烯层状双氢氧化物和蒙脱土纳米复合材料：热，机械和阻燃性能。

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摘要

The effect of incorporation two clays; layered double hydroxides (LDH) and montmorillonite layered silicates (MLS) in linear low density polyethylene (PE) matrix was investigated. MLS and LDH were added of 5, 15, 30 and 60 weight percent in the PE and compounded using a Brabender. Ground pellets were subsequently compression molded. Dispersion of the clays was analyzed using optical microscopy, SEM and XRD. Both the layered clays were immiscible with the PE matrix and agglomerates formed with increased clay concentration. The thermal properties were studied by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Both clays served as nucleation enhancers increasing recrystallization temperatures in the composites. Flame retarding properties were determined by using the flammability HVUL-94 system. LDH indicated better flame retarding properties than MLS for PE. The char structure was analyzed by environmental scanning electron microscopy. Mechanical properties were studied by tensile testing and Vickers microhardness testing apparatus.
机译：掺入两种粘土的效果；研究了线性低密度聚乙烯（PE）基质中的层状双氢氧化物（LDH）和蒙脱土层状硅酸盐（MLS）。在PE中添加5、15、30和60重量％的MLS和LDH，并使用Brabender将其混合。随后将磨碎的粒料压模。使用光学显微镜，SEM和XRD分析粘土的分散性。两种层状粘土都不能与PE基质混溶，并且随着粘土浓度的增加形成附聚物。通过差示扫描量热法（DSC）和热重分析（TGA）研究了热性能。两种粘土均用作成核剂，从而提高了复合材料的重结晶温度。通过使用可燃性HVUL-94系统来确定阻燃性。对于PE，LDH的阻燃性能优于MLS。通过环境扫描电子显微镜分析炭结构。通过拉伸测试和维氏显微硬度测试仪研究了机械性能。

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  • 作者

    Kosuri, Divya.;

  • 作者单位

    University of North Texas.;

  • 授予单位 University of North Texas.;
  • 学科 Engineering Materials Science.;Plastics Technology.
  • 学位 M.S.
  • 年度 2008
  • 页码 117 p.
  • 总页数 117
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;整形外科学（修复外科学）;
  • 关键词

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