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Modern rheological measuring methods for the coating technology

How to determine the rheological behavior of paints and coatings

Introduction

Is it possible to characterize the manufacturing process, performance characteristics, the application process and the behavior of a solid coating film by measurements with an air-bearing rheometer?

The purpose of the following report is to answer this question. A modern coating system has to fulfill various requirements, depending on the application.

Such a system should be easy to produce and process, regardless of the mechanical stresses which occur due to processes such as pumping, filling and application. Its behavior during the application is an important criterion by which a coating system can be evaluated. After the application, the coating should meet the requirements of the desired leveling and sagging behavior.

By the used binder system, and by certain additives and activated fillers, these properties can be controlled well. Depending on the application the cured coating film must resist mechanical, thermal or chemical stress.

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