Determination of Viscosity under Pressurefor Organic Substances and Its Correlationwith Density under High Pressure

张建侯; 刘洪勤

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Determination of Viscosity under Pressurefor Organic Substances and Its Correlationwith Density under High Pressure

更新时间：2025-12-16

- Determination of Viscosity under Pressurefor Organic Substances and Its Correlationwith Density under High Pressure
- CIESC Journal Issue 3, (1991)
- 作者机构：
  
  天津大学化工系,天津大学化工系天津,天津,北京化工学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 June 1991，
  
  Published：25 June 1991
- 稿件说明：
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张建侯, 刘洪勤. Determination of Viscosity under Pressurefor Organic Substances and Its Correlationwith Density under High Pressure[J]. CIESC Journal, 1991, (3).
DOI：

张建侯, 刘洪勤. Determination of Viscosity under Pressurefor Organic Substances and Its Correlationwith Density under High Pressure[J]. CIESC Journal, 1991, (3). DOI：

摘要

对落体式粘度计进行了结构改进.在298.15～348.15K(±0.05K)、由常压至29.5MPa的范围内

测定了四氢呋喃、丙酮、乙腈和苯胺4种纯物质

以及苯+环己烷、正丙醇+正庚烷和正丁醇+正庚烷3种二元混合物的液体粘度共294点.提出了高压液体粘度与密度的关联方程

lnφ=ln(l/μ)=A-lnρ+ξ(3ξ-4)/(1-ξ)~2-Cρ/(RT).用本式对最大压力范围为0.1～500MPa、最大温变幅度为170K的广泛类型物质的液体粘度数据共1049点进行关联和计算

计算值的总平均相对偏差为2.64%

远低于选作比较的Dymond等的关联方程.

Abstract

The falling-body viscometer was structurally improved and used in thedetermination of liquid viscosities of 294 points for four pure substances

tetra-hydrofuran

acetone

methyl-cyanide and aniline

and three binary mixtures

benzene + cyclohexane

1-propanol + n-heptane

and n-butanol + n-heptane

under pressure from 0.1 to 29.5 MPa in the temperature range from 298. 15 to 348. 15K (±0.05K). A correlation equation of liquid viscosity with density under high pressure was proposed. The equation was used to correlate the viscosity data of 1049 points of 34 substances of various types in a pressure range from 0.1 to 500MPa and at a maximum temperature variation of 170K. The overall average relative deviation was 2.64%

much lower than 29.33% of the Dymond correlation.

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