MASTER THE FLOW and gain insights
Anton Paar’s viscometers and rheometers deliver information on your materials’ structure, behavior, and consistency. All instruments have:
- Features that make it easy to measure challenging samples of any type and determine sample behavior under different environmental conditions
- Intelligent tool recognition and configuration to ensure easy handling and minimize errors
- A large number of modular accessories and available measuring techniques
- A global application and service network, broad application knowledge, and local support in the regional technical centers
Everything flows, also when it comes to manufacturing, quality control, and research. Anton Paar offers a variety of solutions for determining the flow and deformation behavior of paints and coatings – from architectural paints to printing inks.
Challenge Solution Your benefit Instrument Basic viscosity and rheological measurements
The paint is too thin or too thick for the application.
- Analyze the viscosity of the paint.
- Determine the viscosity at different shear rates for viscosity of paint at rest and during application.
- Determine the time-dependent behavior at a constant speed/shear rate.
- Perform quick quality control checks at a constant speed.
- Know the flow behavior of your paint by determining the viscosity at several speeds or shear rates to adjust the flow behavior at rest or in motion.
The paint gets stuck while pumping or during application.
Analyze the yield point of the paint.
Adjust the formulation of the paint to lower the yield point of the sample so that less force is needed to initiate sample flow.
The paint produces an inadequate layer thickness or shows sagging after the application.
Analyze the structural decomposition and recovery of the inner structure of the paint.
Adjust the formulation of the paint to ensure a sufficiently high wet layer thickness or no sagging.
The paint is too thick for high-shear application.
Analyze the viscosity of the paint at high shear rates (1,000 s-1 to 10,000 s-1).
Ensure properly adjusted viscosity of paint for high-shear applications, e.g. spraying, brushing.
The paint shows sedimentation on a short time scale.
Check the sedimentation of particles, e.g. pigments and fillers in your paint.
Prevent sedimentation of the paint on a short time scale.
The paint shows phase separation or sedimentation after a certain time at rest.
Check the storage stability with a frequency sweep and thereby observe and avoid separation of the two phases within the material.
Prevent phase separation/sedimentation of the paint during long-term storage.
The paint needs to be applied at various temperature conditions.
Determine the viscosity exactly at the defined temperature.
Adjust the paint to its optimum application conditions.
How long can a two-component material be applied?
Determine the pot/shelf life.
Learn when the viscosity is doubled compared to the viscosity at the beginning of the reaction and thus how long a paint can be used when opened.
Advanced rheological measurements
The drying/curing behavior of the sample must be adjusted.
Analyze the drying/curing behavior of the sample with regards to:
- Physical drying
- Thermal hardening/curing
- UV curing
- Sol-gel time
- Crosslinking reactions
Adapt the paint until it reaches the ideal drying or curing behavior.
The sample does not dry in environments with high humidity.
Adjust the humidity and temperature of the environment during your measurement.
Adapt the behavior of the sample to realistic application conditions.
It has to be defined how long the UV curing sample takes to show a proper crosslinking reactions.
Simulate your crosslinking reactions under the use of UV light.
Find the proper formulation for the optimum application result.
The film is too brittle or soft after curing.
Determine the DMA behavior of the film.
Perform fast screening of the dried film behavior.
Powdery raw materials cannot be pumped.
Simulate the pumpability of solid raw materials using a powder cell.
Avoid issues during transport and storage of powdery materials.
You did not find your specific sample? Anton Paar still has the solution for your challenge. Just contact us for more information.
Flow and deformation behavior are essential parameters when it comes to material characterization. Viscometers and rheometers are the ideal tools to see whether your sample is in the right flow.
MASTER THE FLOW with our viscometers
Viscosity measurements of paints and coatings are essential for quality control at every step in the production line. They ensure consistency of incoming raw materials, provide immediate information on the processability and pumpability of a material, and help with verifying the consistency of end products as well as their specifications. A rotational viscometer like ViscoQC 100/300 is commonly used for quality control in the paints industry and fulfills standards such as ISO 2555, ASTM D2196, and many more. Perform a single-point dynamic viscosity determination with ViscoQC 100 for quick coating quality control or start a multi-point viscosity measurement with ViscoQC 300 to determine, for example, the flow behavior and yield point of the paint. Receive outstanding results using an easy-to-use stand-alone instrument with intelligent, valuable features:
- Ready to use out-of-the-box
- Built-in digital leveling function to check proper alignment
- Magnetic coupling for one-hand removal/attachment of spindle
- Automatic spindle/guard detection and digital instrument alignment check
- TruMode™ for when spindle/speed combination is unknown
- Air-counter-cooled Peltier temperature device with T-Ready™ shows when sample has reached temperature equilibration
The rotational rheometer RheolabQC further enables you to study the structural regeneration of your samples and adapt it properly. With our huge variety of measuring systems available for RheolabQC high shear rates typical for spraying can be simulated. Special Krebs stirrers according to ASTM D562 enable viscosity determination in Krebs units. All measuring systems are automatically recognized by Toolmaster™ to prevent user errors and enhance traceability.
MASTER THE FLOW with our rheometers
With a rheometer you can follow the change in your paint’s and coating’s viscosity – from one measuring point to the next. You instantly gain deeper insights into your sample’s deformation, flow behavior, and structure – so you can change matters in your favor right away.
Enable measurements in both rotational and oscillatory mode. The choice of rheometer depends on the application. To investigate the deformation and flow behavior of a sample consider MCR 72. For observing the samples’ structure, MCR 92 is recommended. For the full range, starting from routine quality control to high-end research and development measurements, the MCR XX2 series is the best choice. The MCR X2 and XX2 series offer application-specific accessories to fully characterize the rheological properties of your paint and coating sample.
- Modular portfolio concept and wide range of accessories and measuring systems guarantees future-proof measurements for your specific application
- Rheometer portfolio from entry-level and quality control devices to R&D devices, all with one and the same software
- Error-proofing and time savings:
- Toolmaster™: automatic recognition of measuring system and accessories
- QuickConnect coupling: allows one-hand connection of the measuring system
- TruStrain: swiftly adjusts to the desired shear rate step or step in strain without overshoots
- TruRate: precisely controls sample strains, shear rates, or stresses without any pre-testing
- TruRay: lighting of the measurement surface for the MCR X2 series provides a clear view of the sample
If you want to learn more about the laws of viscosity and elasticity, combined with practical approaches, this book is a must-have. “Applied Rheology” will help you find the answers to questions such as: “Will my paint have a nice glossy finish or will it have brush marks and drips?” Questions concerning when to use a rotational test and when to use an oscillatory test on different kinds of coatings are also discussed. Besides the applications in the paints and coatings industry also measurements of other materials such as pharmaceuticals and cosmetics, building materials, or food are described.
Applied Rheology is primarily for newcomers to rheology, but its comprehensive practical advice, including tips for avoiding errors, makes it a great resource for beginners and experienced users of rheometers alike.
Thomas Mezger, author of “Applied Rheology”, also wrote a more extensive book on rheology, called “Handbook of Rheology”. This standard work describes the principles of rheology in practical terms. The book includes the rheology of additives in waterborne dispersions and surfactant systems. It is a great reference book. Moreover, it can also serve as a textbook for studying the theory behind the methods. Thomas Mezger writes about the practical use of rheology in the areas of quality control, production and application, chemical and mechanical engineering, materials science, and industrial research and development. This book is the perfect guide to performing tests with rotational and oscillatory rheometers and interpreting the results correctly.
Meet Joe Flow, your guide into the exciting world of rheology. He will first guide you through the “Basics of Viscometry” to provide you with the basic knowledge of liquids in flow. Then you enter the world of rheometry with the first of two “Basics of Rheometry” courses, dealing with measurements of materials in rotation. Finally Joe Flow will round off your education with the “Basics of Oscillation” and leave you a rheology expert.
In the Anton Paar Wiki you can find extensive information about the basics of viscometry containing helpful calculators and viscosity tables to get to know the theory, and also articles on rotational viscometry to learn more about the instruments as such. Rheology knowledge is also represented in the Wiki, for example in an article about the basics, but also two more specific articles on powder rheology (relevant for powder coatings), the thixotropic effect (for understanding a paint during application and at rest), and suspension rheology (paints are suspensions, which means particles dissolved in liquids).
Master the flow of your coatings
Did you ever ask yourself how your quality control can be made more efficient and reliable? Or how rheology can help you in every step of the R&D process of your coatings? From quality or process control at the production line up to specific measurements in the development process of new products – register today and learn how Anton Paar rheometers and viscometers can help you with:
- Analysis of viscosity
- Yield and flow point determination
- Decomposition and regeneration behavior
- Investigation of curing and drying behavior