Viscosity is an essential parameter in the behaviour of paints, varnishes and coatings, both in their manufacture and application.
Viscosity is an essential parameter in the behaviour of paints, varnishes and coatings, both in their manufacture and application.
Proper viscosity control ensures:
During formulation, it is essential to consider the application method, working temperature and the rheological behaviour of the product (viscosity at different shear rates and thixotropy), to avoid subsequent problems in the application process.
Similarly, when formulating a paint, it is necessary to know both the application method and the temperatures at which it will be applied, so during the development of the mixture, adequate control of viscosities at low and high shear rates is necessary, as well as evaluation of the thixotropy present.
Made of anodised aluminium with a stainless steel flow jet. Volume 100 ml. Non-standard versions available for comparative testing.
ASTM D1200
Code
Cup type
Code
Description
Code
Description
HI-151-1
Thermometer with foldable probe for checking the temperature of the sample. Range from -50°C to 300°C
Standards
ASTM D1200
What is the difference between a Ford Cup and an ISO Cup?
Both measure viscosity using flow time, but they employ different geometries and standards. The Ford Cup is usually associated with ASTM standards, whilst ISO Cups are commonly used in procedures based on international ISO standards.
What problems can a paint with excessively high viscosity cause?
High viscosity can make spraying difficult, increase energy consumption in application equipment and result in uneven finishes or levelling defects.
Why can a difference of 5 or 10 Ford seconds be significant?
In certain applications, a variation of just 5 to 10 Ford seconds can significantly alter the spray pattern, the applied thickness and the final finish of the coating.
