Paint & Inks are usually characterized in very empirical ways, with operator-dependent tests. Another possibility is to use very advanced technologies, but without respecting realistic conditions (thickness, substrate, pre-coating, etc...).
Rheolaser COATING enables to measure any paint or ink on its designed substrate, in realistic conditions (precise thickness), with no influence from the operator!
Cosmetic products can be characterized during their drying as soon as they are applied as a thin coating. It happens in many end-use of the products, such as:
All kind of resins, binders, or materials can dry or cure versus time (or depending on UV light or any other external conditions). These samples can also be studied with the Rheolaser COATING, as it enables to work directly on the product, in realistic conditions (substrate and specific thickness).
The very first commercial instrument based on MS-DWS technology, Rheolaser COATING, enables monitoring of microstructure changes during the film formation process. It identifies the drying mechanisms and characteristic drying times on any kind of substrate and any thickness. It works on any kind of film-forming products or coatings, such as inks, paints, varnishes, resins, binders, cosmetic films...
To quantify the deformation speed of the speckle pattern and plot the speckle rate as a function of time, successive speckle images are acquired over time using a video camera.
The speckle images are then processed to determine the decorrelation time τ corresponding to a relevant speckle pattern deformation. The speckle rate is obtained as the inverse of time τ, and one point is plotted on the kinetics.
As the film progressively forms, the scatterers motion decreases and so does the deformation speed of speckle pattern. The acquisition time is continuously optimized to achieve the best measurement at high and low speckle rates, i.e. to ensure accuracy and responsiveness.
> Fluidity Factor
Thanks to the unique and patented A.S.I.I (Adaptive Speckle Image Interferometry) processing, evolution of the “Fluidity Factor” versus time is displayed in real time providing a wide range of information such as:
> A versatile device
Rheolaser COATING has been designed as an open configuration to run experiments with automatic coater and/or vacuum bed. It works with any sample thickness, records temperature and humidity at all time and works on any kind of substrate: metal, glass, plastic, wood, concrete, paper, and others...
> Rheolaser Coating
OPTICAL FILM FORMATION ANALYZER
Determine accurately the drying or curing times and mechanisms of any coating or film-forming product, without any contact.
|Light source||650 nm or 850 nm|
|Simultaneous measurements||1 to 4|