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首页> 外文期刊>Journal of Polymers and the Environment >Mechanical Properties of Poly (Lactic Acid)/Hemp Fiber Composites Prepared with a Novel Method
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Mechanical Properties of Poly (Lactic Acid)/Hemp Fiber Composites Prepared with a Novel Method

机译：用新方法制备的聚乳酸/麻纤维复合材料的力学性能

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摘要

This research dealt with a novel method of fabricating green composites with biodegradable poly (lactic acid) (PLA) and natural hemp fiber. The new preparation method was that hemp fibers were firstly blending-spun with a small amount of PLA fibers to form compound fiber pellets, and then the traditional twin-screw extruding and injection-molding method were applied for preparing the composites containing 10-40 wt% hemp fibers with PLA pellets and compound fiber pellets. This method was very effective to control the feeding and dispersing of fibers uniformly in the matrix thus much powerful for improving the mechanical properties. The tensile strength and modulus were improved by 39 and 92 %, respectively without a significant decrease in elongation at break, and the corresponding flexural strength and modulus of composites were also improved by 62 and 90 %, respectively, when the hemp fiber content was 40 wt%. The impact strength of composite with 20 wt% hemp fiber was improved nearly 68 % compared with the neat PLA. The application of the silane coupling agent promoted further the mechanical properties of composites attributed to the improvement of interaction between fiber and resin matrix.
机译：这项研究涉及一种利用可生物降解的聚乳酸（PLA）和天然大麻纤维制造绿色复合材料的新方法。新的制备方法是先将大麻纤维与少量的PLA纤维共混纺丝，制成复合纤维粒料，然后采用传统的双螺杆挤出成型法制备10-40 wt％的复合材料。 ％大麻纤维与PLA颗粒和复合纤维颗粒。该方法非常有效地控制纤维在基体中的均匀喂入和分散，因此对于改善机械性能非常有效。当大麻纤维含量为40时，拉伸强度和模量分别提高了39％和92％，而断裂伸长率没有明显降低，复合材料的相应弯曲强度和模量也分别提高了62％和90％。重量％。与纯PLA相比，含20 wt％大麻纤维的复合材料的冲击强度提高了近68％。硅烷偶联剂的应用进一步提高了复合材料的机械性能，这归因于纤维与树脂基体之间相互作用的改善。

著录项

  • 来源
    《Journal of Polymers and the Environment》 |2013年第4期|1117-1127|共11页
  • 作者

    Yanan Song; Jun Liu; Shaozhuang Chen; Yubin Zheng; Shilun Ruan; Yuezhen Bin;

  • 作者单位

    Department or Polymer science ana Engineering. Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, China;

    Department or Polymer science ana Engineering. Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, China;

    Department or Polymer science ana Engineering. Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, China;

    Department or Polymer science ana Engineering. Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, China;

    Department of Engineering Mechanics, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian 116024, China;

    Department or Polymer science ana Engineering. Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    PLA; Hemp fiber; Composite; Mechanical property;

    机译：解放军大麻纤维;综合;机械性能;

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