| 流变剪切粘度测量不确定度的评定 |
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| 引用本文： | 郑慧琴,杨黎黎.流变剪切粘度测量不确定度的评定[J].合成技术及应用,2008,23(3). |
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| 作者姓名： | 郑慧琴 杨黎黎 |
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| 作者单位： | 中国石化北京燕山分公司树脂应用研究所,北京,房山,102500 |
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| 摘 要： | 建立了热塑性塑料毛细管挤出流变试验中测量剪切粘度的数学模型,根据模型分析其测量不确定度的来源,并以高密度聚乙烯为例分别计算各分量的标准不确定度,以及合成标准不确定度和扩展不确定度,最终报告出不同剪切速率下的剪切粘度的相对扩展不确定度以及扩展不确定度。
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| 关 键 词： | 流变试验 剪切粘度 不确定度 包含因子 |
Uncertainties in the determination of shear viscosity for thermoplastic by capillary extrusion rheometry testing |
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| Zheng Huiqin,Yang Lili.Uncertainties in the determination of shear viscosity for thermoplastic by capillary extrusion rheometry testing[J].Synthetic Technology and Application,2008,23(3). |
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| Authors: | Zheng Huiqin Yang Lili |
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| Affiliation: | Zheng Huiqin Yang Lili (Sinopec Resin Application Research Institute of Beijing Yan Sha Co.Ltd; Beijing 102500; China); |
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| Abstract: | A mathematic model is made that is used to determine the uncertainties of shear viscosity for thermoplas- tic by capillary extrusion rheometry test,analyzing the source of uncertainties,calculating respectively standard uncer- tainty,combined uncertainty and expanded uncertainty with HDPE.Finally it reports relative expanded uncertainty and expanded uncertainty of shear viscosity under different shear rate. |
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| Keywords: | rheometry test shear viscosity uncertainties coverage factor |
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