A multidirectional shear rheometer for polymer melts
A multidirectional shear rheometer for polymer melts
复制标题
用于聚合物熔体的多向剪切流变仪
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
H. Hurlimann
中科院分区：
文献类型：
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作者：
H. Hurlimann
建立了聚合物熔体平行平板剪切流变仪，进行了两个垂直方向的叠加剪切试验。为了检验其性能，开发了一种标准测试，包括以0°到180°之间的角度改变剪切方向。对结果进行了分析，以获得关于低密度聚乙烯熔体多向剪切行为的初步信息。将测得的剪切力的正交分量相加，然后再将其拆分为原始剪切力分量和改变的剪切力方向分量。结果发现，在误差范围内，这些分量只与时间和剪切速率有关，而与剪切方向改变的角度无关。总切变率为0.5 6 S−1。
A parallel plate shear rheometer for polymer melts was built for superposed shear tests in two orthogonal directions. To examine its performance, a standard test was developed, including a change of the shear direction by angles between 0° and 180°. The results were analyzed to obtain preliminary information on the multidirectional shear behavior of a low-density polyethylene melt. The measured orthogonal components of the shear force were added and then split again into components of the original and of the changed shear direction. It was found, within the range of error, that these components depend only on time and on the shear rate, but not on the angle by which the shear direction is changed. The total shear rate was 0.56 s−1.