Design of a high-pressure viscosity-measurement system using two pressure balances

Design of a high-pressure viscosity-measurement system using two pressure balances
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使用两个压力天平的高压粘度测量系统的设计

DOI:
10.1088/1361-6501/ab9cdf
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发表时间:
2020
影响因子:
2.4
通讯作者:
Kazunori Ide and Yoshitaka Fujita
Kazunori Ide and Yoshitaka Fujita
中科院分区:
工程技术3区
文献类型:
--
作者:
Tomoya Muramoto;Hiroaki Kajikawa;Hideaki Iizumi;Kazunori Ide and Yoshitaka Fujita

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In this paper, a new high-pressure viscosity measurement system using a capillary method is reported. In this system, two pressure balances are used to generate stable pressure and flow field in the capillary. The volumetric flow rate was measured by calculating the change in the piston fall rate. To check the effectiveness of the method, the viscosity of bis (2-ethylhexyl) sebacate was measured at pressures of up to 200 MPa. Differential pressure and volumetric flow rate had a linear relationship at all temperature and pressure conditions, indicating that the Hagen–Poiseuille law can be applied in this method. The viscosity–pressure dependence is in agreement with other published reports. Thus, we confirmed that the newly developed high-pressure viscosity measurement system can accurately evaluate the pressure dependence of viscosity.
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