模压成型的杨木纤维/高密度聚乙烯复合材料蠕变性能和蠕变模型

曹岩, 徐海龙, 王伟宏, 王清文

曹岩, 徐海龙, 王伟宏, 等. 模压成型的杨木纤维/高密度聚乙烯复合材料蠕变性能和蠕变模型[J]. 复合材料学报, 2016, 33(6): 1174-1178. DOI: 10.13801/j.cnki.fhclxb.20160107.004
引用本文: 曹岩, 徐海龙, 王伟宏, 等. 模压成型的杨木纤维/高密度聚乙烯复合材料蠕变性能和蠕变模型[J]. 复合材料学报, 2016, 33(6): 1174-1178. DOI: 10.13801/j.cnki.fhclxb.20160107.004
CAO Yan, XU Hailong, WANG Weihong, et al. Creep properties and creep model of poplar wood fiber/high-density polyethylene composites prepared by compression molding[J]. Acta Materiae Compositae Sinica, 2016, 33(6): 1174-1178. DOI: 10.13801/j.cnki.fhclxb.20160107.004
Citation: CAO Yan, XU Hailong, WANG Weihong, et al. Creep properties and creep model of poplar wood fiber/high-density polyethylene composites prepared by compression molding[J]. Acta Materiae Compositae Sinica, 2016, 33(6): 1174-1178. DOI: 10.13801/j.cnki.fhclxb.20160107.004

模压成型的杨木纤维/高密度聚乙烯复合材料蠕变性能和蠕变模型

基金项目: 国家自然科学基金(31460171);贵州省科学技术基金(黔科合J字[2015]2075号)
详细信息
    通讯作者:

    王伟宏,博士,教授,博士生导师,研究方向为生物质复合材料。E-mail:weihongwang2001@aliyun.com

  • 中图分类号: TB332

Creep properties and creep model of poplar wood fiber/high-density polyethylene composites prepared by compression molding

  • 摘要: 采用长为850~2 000 μm的杨木纤维(PWF)增强高密度聚乙烯(HDPE), 利用模压成型法制备了PWF/HDPE复合材料, 对其进行了弯曲力学性能测试、无缺口简支梁冲击强度测试、24 h弯曲蠕变-24 h回复性能测试、1 000 h蠕变性能测试及蠕变后残余弯曲力学性能测试, 并利用两参数指数模型、Findley指数模型及四元件Burgers模型拟合蠕变曲线。结果表明: PWF/HDPE复合材料的弯曲强度为21.14 MPa, 弹性模量为2.31 GPa, 无缺口冲击强度为6.77 kJ/m2;24 h形变为0.803 mm, 24 h回复率为78.46%, 蠕变后弯曲强度下降了6.45%, 而弹性模量增加了8.95%;1 000 h形变为0.809 mm, 蠕变后弯曲强度保留了72.35%, 弹性模量增加了10.67%;3种模型中, 四元件Burgers模型拟合PWF/HDPE复合材料蠕变性能的效果较好。
    Abstract: Poplar wood fibers (PWF) of 850-2 000 μm reinforced high-density polyethylene (HDPE) composites were prepared by compression molding process. The flexural mechanical property test, un-notched beam impact strength test, 24 h flexural creep-24 h recovery property test, 1 000 h creep property test and residual flexural mechanical performance test after creep of PWF/HDPE composites were studied. And two-parameter exponential model, Findley's exponential model and four-element Burgers model were used to fit creep curve. The results show that the flexural strength, elastic modulus and un-notched impact strength of PWF/HDPE composites are 21.14 MPa, 2.31 GPa and 6.77 kJ/m2, respectively. The 24 h deformation is 0.803 mm, and 24 h recovery rate is 78.46%. After creep, flexural strength decreases by 6.45%, but the elastic modulus increases by 8.95%. The 1 000 h deformation is 0.809 mm, and the flexural strength of the creep is 72.35% of the original value, and the elastic modulus increases by 10.67%. Among the three models, four-element Burgers model successfully simulates with the creep properties of PWF/HDPE composites.
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    其他类型引用(13)

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  • 被引次数: 22
出版历程
  • 收稿日期:  2015-11-03
  • 修回日期:  2015-12-22
  • 刊出日期:  2016-06-14

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