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Mechanical properties and prediction for nanocalcium carbonate-treated bamboo fiber/high-density polyethylene composites

机译：纳米碳酸盐处理竹纤维/高密度聚乙烯复合材料的力学性能及预测

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摘要

Nanocalcium carbonate (CaCO3) was successfully adhered to the surface of bamboo fiber (BF) via both impregnation and blending modification. The BF-, BMBF (bamboo fiber treated by blending modification)- and IMBF (bamboo fiber treated by impregnation modification)-reinforced high-density polyethylene (HDPE) composites were all manufactured by means of extrusion molding. The flexural and impact properties of the composites (the addition of BF, BMBF and IMBF were all 30 wt%) were analyzed. CaCO3 with a loading of 15 wt% had an effect on the performance of the composites. The flexural strength (FS) of the BMBF and IMBF composites increased by 1.09 and 9.36%, respectively, while the differences of the impact strength were insignificant among these, compared to the BF/HDPE composites. The flexural properties of the IMBF/HDPE composites were investigated with different mass fractions of IMBF (5, 10, 15, 20, 30, 50, 60 and 70 wt%). The results showed that the FS of the IMBF/HDPE composites reached a maximum value (58.99 MPa) when the mass fraction of the IMBF was 30 wt% and increased by 50.95% compared to when the mass fraction was 5 wt%. These results were supported by ESEM and fractal dimension analysis in terms of proper distribution of nano-CaCO3 and interfacial adhesion between the IMBF and HDPE matrix. The results revealed that the fractal dimension D of IMBF/HDPE composite with a mass fraction of 30 wt% reached a maximum value (2.2036), which was similar to the FS results. There was a linear correlation between lg (FS) and fractal dimension D, indicating that the fractal dimension was practicable for the IMBF-reinforced HDPE composites. The fractal features could reflect the macro-mechanical properties, and the percentage error of the fitting function was within 10%.
机译：通过浸渍和混合改性成功地粘附到竹纤维（BF）表面上的纳米钙（CaCro 3）。所有通过挤出成型制造，BF-，通过混合改性的竹纤维） - 和通过浸渍改性处理的竹纤维） - 和浸渍改性的竹纤维） - 挤压高密度聚乙烯（HDPE）复合材料。分析了复合材料的弯曲和冲击性质（添加BF，BMBF和IMBF全部30wt％）。负载15wt％的Caco3对复合材料的性能有影响。与BF / HDPE复合材料相比，BMBF和IMBF复合材料的弯曲强度（FS）分别增加1.09和9.36％，而冲击强度的差异是微不足道的。研究了IMBF / HDPE复合材料的弯曲性能，用IMBF（5,10,15,20,30,50,60和70wt％）的不同质量分数。结果表明，当IMBF的质量分数为30wt％时，IMBF / HDPE复合材料的FS达到最大值（58.99MPa），与质量分数为5wt％时增加50.95％。在适当分布的纳米Caco3和IMBF和HDPE基质之间的界面粘合方面，通过ESEM和分形尺寸分析支持这些结果。结果表明，具有30wt％的质量分数的IMBF / HDPE复合物的分形尺寸D达到了最大值（2.2036），其类似于FS结果。 Lg（FS）和分形尺寸D之间存在线性相关性，表明分形尺寸可用于IMBF增强的HDPE复合材料。分形特征可以反映宏观力学性能，拟合功能的百分比误差在10％以内。

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  • 来源
    《Journal of Materials Science》 |2017年第19期|共14页
  • 作者

    Wang Cuicui; Wang Shuo; Cheng Haitao; Xian Yu; Zhang Shuangbao;

  • 作者单位

    Beijing Forestry Univ Beijing Key Lab Wood Sci &

    Engn Beijing 100083 Peoples R China;

    Beijing Forestry Univ Sch Soil &

    Water Conservat Beijing 100083 Peoples R China;

    Beijing Forestry Univ Beijing Key Lab Wood Sci &

    Engn Beijing 100083 Peoples R China;

    Int Ctr Bamboo &

    Rattan Wangjing Area 8 Futong Dong Dajie Beijing 100102 Peoples R China;

    Beijing Forestry Univ MOE Key Lab Wooden Mat Sci &

    Applicat 35 Tsinghua East Rd Beijing 100083 Peoples R China;

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  • 正文语种 eng
  • 中图分类 工程材料学;
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