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首页> 外文学位 >Effect of electron beam radiation cross-linking on metallocene linear low-density polyethylene foam cable jacket extrudate.
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Effect of electron beam radiation cross-linking on metallocene linear low-density polyethylene foam cable jacket extrudate.

机译：电子束辐射交联对茂金属线性低密度聚乙烯泡沫电缆护套挤出物的影响。

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摘要

In this research, the effects of electron beam radiation cross-linking on the mechanical properties of a foamed extrudate were investigated. This research is part of an on-going project at the University of Massachusetts Lowell where the goal is to develop a high strength foamed jacketing material for an underwater communications cable application. Metallocene linear low-density polyethylene is being studied for its use as a base material for a syntactic foam cable jacketing material. Expandable syntactic microballoons, Expancel RTM, were employed as the foaming agent where 8 and 10% concentrations by mass were investigated. Samples were irradiated at doses of zero (0) to 200 kGy. Mechanical properties, including tensile, compression set under constant deflection, hardness, as well as overall foam cell quality and surface quality, were evaluated.; The overall project goal for density was 0.35 g/cc. This was achieved while maintaining excellent closed cell foam quality and excellent skin quality. Hardness was not significantly affected by the radiation doses, however, Expancel RTM concentration did have a slight effect whereas a lower hardness was observed for the higher concentration at 10%. The modulus appeared to be unaffected by the treatment, while there was a significant reduction in percent strain at break and only a slight increase in stress at break indicating that cross-linking had taken place to some degree. Results for percent strain at yield and stress at yield both showed increasing trends. Compression set properties appeared to be only slightly affected by the irradiation treatment for both formulations.
机译：在这项研究中，研究了电子束辐射交联对泡沫挤出物力学性能的影响。这项研究是马萨诸塞州洛厄尔大学正在进行的项目的一部分，该项目的目的是开发用于水下通信电缆应用的高强度泡沫护套材料。茂金属线性低密度聚乙烯正被研究用作句法泡沫电缆护套材料的基础材料。使用可膨胀的句法微气球Expancel RTM作为起泡剂，其中质量浓度为8％和10％。以零（0）至200 kGy的剂量照射样品。评估了机械性能，包括拉伸性能，在恒定挠度下的压缩永久变形，硬度以及泡沫电池的整体质量和表面质量。密度的总体项目目标是0.35 g / cc。这是在保持出色的闭孔泡沫质量和出色的皮肤质量的同时实现的。硬度不受辐射剂量的显着影响，但是，Expancel RTM浓度确实有轻微影响，而在10％的较高浓度下观察到较低的硬度。模量似乎不受该处理的影响，而断裂时的应变百分比显着降低，而断裂时的应力仅略微增加，这表明发生了某种程度的交联。屈服应变百分比和屈服应力的结果均显示出增加的趋势。两种配方的辐照处理似乎对压缩永久变形的性能影响很小。

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  • 作者

    Cote, Dwayne R.;

  • 作者单位

    University of Massachusetts Lowell.;

  • 授予单位 University of Massachusetts Lowell.;
  • 学科 Plastics Technology.
  • 学位 M.S.Eng.
  • 年度 2004
  • 页码 68 p.
  • 总页数 68
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 整形外科学（修复外科学）;
  • 关键词

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