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首页> 外文期刊>Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing >On the strain rate sensitivity of HDPE/CaCO_3 nanocomposites
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On the strain rate sensitivity of HDPE/CaCO_3 nanocomposites

机译：HDPE / CaCO_3纳米复合材料的应变速率敏感性

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摘要

In the current study the role of both nano-sized calcium carbonate and strain rate on the tensile properties of HDPE was studied. For this purpose standard tensile samples of HDPE and HDPE/10 vol.% CaCO_3 were performed using extrusion and injection molding methods. Tensile test was done at different strain rates. The results of tests showed that addition of 10 vol.% of nano-sized calcium carbonate made an increase in both yield stress and Young's modulus of HDPE unlike its elongation. Also it was concluded that strain-rate sensitivity of HDPE decreased as nano-sized calcium carbonate was added to it. The data obtained from the tests indicated that the variation of Young's modulus of HDPE nanocomposite could be obtained from the following equation, i.e. E/E_1 = [1.0 + 5_(φ_2) + 15.5φ_2~2].
机译：在当前的研究中，研究了纳米碳酸钙和应变速率对HDPE拉伸性能的作用。为此目的，使用挤出和注射成型方法进行HDPE和HDPE / 10体积％CaCO 3的标准拉伸样品。在不同的应变速率下进行拉伸测试。测试结果表明，与伸长率不同，添加10vol。％的纳米级碳酸钙会使HDPE的屈服应力和杨氏模量均增加。还得出结论，随着向其添加纳米碳酸钙，HDPE的应变率敏感性降低。从测试中获得的数据表明，HDPE纳米复合材料的杨氏模量的变化可以通过以下等式获得，即，E / E_1 ＝ [1.0 + 5_（φ_2）+15.5φ_2〜2]。

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