Flow Properties of Aluminum Soaps-Hydrocarbon Systems

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Abstract
Flow properties of aluminum soap-hydrocarbon systems as viscous liquids or plastic bodies are studied with a concentric rotational viscometer. Results are obtained under the rate of shear up to 103 sec−1. (1) The systems behave as dispersions of soap crystallites with network structures combined by secondary interactions of the particles, and they exhibit marked viscosity increase. (2) The rheological structures suffer shear breakdown under shear, resulting in decrease in viscosity. (3) Recovery from the broken structures is impossible, that is, this change is not thixotropic but shear breakdown. (4) Flow properties change with time while standing at rest. (5) The effects of concentration, temperature and fatty acids constituting soaps are clarified.

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