关于触变悬浮液和流变悬浮液的流变学

IF 1.4 4区化学 Q4 CHEMISTRY, PHYSICAL Colloid Journal Pub Date : 2023-12-10 DOI:10.1134/s1061933x23600628

A. I. Levinsky

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引用次数: 0

摘要

摘要__ 本文推导出半经验方程，描述了单组分悬浮液流动过程中剪切应力与剪切速率的关系。该悬浮液被认为由两部分组成：固相的单颗粒及其二聚体，它们之间发生可逆的二聚反应。在这种情况下，单颗粒的二聚反应被认为是一种速率常数不变的反应，而二聚体的解离则被认为是一种速率常数随剪切速率线性增加的逆反应。计算公式基于 Krieger-Doherty 公式，并将其推广到多组分悬浮液中。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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On the Rheology of Thixotropic and Rheopexic Suspensions

Abstract

^__ Semi-empirical equations are derived that describe the dependence of shear stress on shear rate during the flow of a one-component suspension. The suspension is considered as consisting of two fractions: single grains of the solid phase and their dimers, between which a reversible dimerization reaction occurs. In this case, the dimerization of single grains is considered as a reaction with an invariable rate constant, and the dissociation of dimers is considered as an inverse reaction with a rate constant that increases linearly with the shear rate. The equations are based on the Krieger−Doherty formula, generalized to the case of a multicomponent suspension.

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来源期刊

Colloid Journal 化学-物理化学

CiteScore

2.20

自引率

18.20%

发文量

审稿时长

6-12 weeks

期刊介绍： Colloid Journal (Kolloidnyi Zhurnal) is the only journal in Russia that publishes the results of research in the area of chemical science dealing with the disperse state of matter and surface phenomena in disperse systems. The journal covers experimental and theoretical works on a great variety of colloid and surface phenomena: the structure and properties of interfaces; adsorption phenomena and structure of adsorption layers of surfactants; capillary phenomena; wetting films; wetting and spreading; and detergency. The formation of colloid systems, their molecular-kinetic and optical properties, surface forces, interaction of colloidal particles, stabilization, and criteria of stability loss of different disperse systems (lyosols and aerosols, suspensions, emulsions, foams, and micellar systems) are also topics of the journal. Colloid Journal also includes the phenomena of electro- and diffusiophoresis, electro- and thermoosmosis, and capillary and reverse osmosis, i.e., phenomena dealing with the existence of diffusion layers of molecules and ions in the vicinity of the interface.