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A look at the conference program: SESSION B Part 1

To shorten the wait for the 14th ThGOT and the 6th Optics Colloquium we would like to give you a small foretaste of our numerous exciting technical presentations in the coming weeks.


Silane-based reactive compounds for vibratory finishing
Andreas Brandl, INNOVENT e. V. - Primer and Chemical Surface Treatment, Jena, Germany

This article deals with the development and application properties of vibratory finishing compounds containing silane.
Vibratory finishing is a widely used, economically viable process for the mechanical-chemical machining of metallic workpieces. It is used for deburring and rounding edges, cleaning and degreasing and/or smoothing and polishing metallic parts produced in large quantities. In this process, mixtures of the workpieces to be processed, abrasive particles (chips) and aqueous-based compositions (compounds) specially developed for these applications are placed in working containers of various possible designs and then set in rotation or vibration. The main tasks of the compound solutions are to remove abrasion from grinding wheels and workpieces as well as oil and grease contamination to the greatest possible extent by means of good cleaning, dispersing and dirt-carrying properties.
The findings obtained show that it is possible to fulfill all the tasks of conventional vibratory finishing compounds by using silane-containing reactive compounds and, in addition, to enable functionalization of the workpiece surface during vibratory finishing. The functionalization results in better adhesion of subsequent organic layers (adhesives, coatings and printing inks), which also leads to an improvement in the corrosion resistance of the overall system.


This talk will be presented in SESSION B: NEW TRENDS IN SURFACE TECHNOLOGY on March 12, 2019 at 2:40 pm.


Surface measurement technology for the simulation of an inkjet printing process
Martin Grüßer, DataPhysics Instruments GmbH, Filderstadt, Germany

For an optimal print image in inkjet printing, the matching of ink and substrate is a decisive prerequisite. Furthermore, the ink must be adapted to the available print heads, so that often only the substrate surface can be modified to optimize the required wetting, adhesion and absorption properties.
The OCA 200 optical contour analysis system in combination with the PDDS picoliter dispensing system from DataPhysics Instruments makes it possible to determine substrate properties under application conditions, i.e. with "jet-dispensed" picoliter drops, and to observe the processes with a temporal resolution of less than 1 ms. Furthermore, the ink-substrate interaction during the printing process can be simulated and characterized directly under inkjet conditions, bypassing the possible clogging of an expensive printhead by using disposable cartridges, unlike using conventional printheads and drop-watchers. These and other advantages offered by metrology for inkjet print product development will be presented with application examples in the presentation.


This talk will be presented in SESSION B: NEW TRENDS IN SURFACE TECHNOLOGY on March 12, 2019 at 3:30 pm.