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首页> 外文期刊>Journal of Applied Polymer Science >Determination of the minimum sample size for a reliable strength measurement of talc-filled polypropylene fibers
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Determination of the minimum sample size for a reliable strength measurement of talc-filled polypropylene fibers

机译：确定最小样品量，以可靠地测量滑石填充聚丙烯纤维的强度

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摘要

Accurate determination of mechanical properties plays an important role to comment on improvement in the mechanical properties of particle-filled PP fibers. However, the existing standards are not totally suitable for reliable strength determination of particle-filled PP fibers. In the framework of this study, microsized talc particle-filled PP fibers were produced with different talc ratio and tensile strength measurements were performed with various gage lengths. Statistical Akaike Information Criterion analysis shows that strength distribution of talc-filled PP fibers is best characterized by Weibull distribution function. It is reported that, the gage length has almost no influence of Weibull parameters of pure PP fibers while strong effects on Weibull parameters of talc-filled PP fibers. It is shown that if the tensile strength of talc-filled PP fibers is to be measured, at least 50 samples, which is more than value suggested by existing standard, should be used for a reliable determination of Weibull parameters. Therefore, the main aim of this study is to question the feasibility of minimum sample size suggested by the existing ASTM D3822 standard for reliable strength measurement of talc filled PP fibers. (C) 2016 Wiley Periodicals, Inc.
机译：准确测定机械性能在评论填充颗粒PP纤维的机械性能方面起着重要作用。但是，现有标准并不完全适合可靠地确定颗粒填充PP纤维的强度。在这项研究的框架内，生产了具有不同滑石比例的超细滑石颗粒填充PP纤维，并在不同规格长度下进行了拉伸强度测量。 Akaike信息准则的统计分析表明，滑石填充PP纤维的强度分布最能体现威布尔分布函数。据报道，标距长度几乎不影响纯PP纤维的Weibull参数，而对滑石填充PP纤维的Weibull参数影响很大。结果表明，如果要测量滑石粉填充的PP纤维的拉伸强度，则至少应使用50个样品（其强度超过现有标准所建议的值）才能可靠地确定Weibull参数。因此，本研究的主要目的是质疑现有ASTM D3822标准建议的最小样品尺寸是否可用于可靠地测量滑石填充PP纤维的强度。 （C）2016威利期刊公司

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