Equipment for material conditioning
Various grinding devices are available to optimize particle morphology and size distribution. Starting with the comminution of coarse components in a jaw crusher (BB50, Retsch GmbH) and continuing with continuous fine grinding in an agitator ball mill (LabStar, Erich Netzsch B.V. & Co. Holding KG), planetary ball mills can be used in batch operation to produce powders with a defined particle size distribution on both a 10 g scale (Pulverisette 7, Fritsch GmbH) and on a scale of several 100 g (PM400, Retsch GmbH).
Slurry production for film casting:
The vacuum planetary centrifugal mixer Thinky Mixer ARV-310 is designed for homogenizing and mixing or grinding powder-containing slurries or suspensions with or without grinding balls.
Both very low-viscosity and high-viscosity liquids can be mixed together. Mixing can take place at atmospheric pressure or under vacuum.
Specifications:
- Maximum mixing weight with all adapters: 310 grams.
- Programmable in 5 mixing steps
- Speed continuously adjustable from 200 to 2000 rpm
The BIO ENGINEERING INVERSINA 20L tumbling mixer is suitable for homogenizing, mixing, or grinding powdered slurries or suspensions with or without grinding balls. The mixer is suitable for low to medium viscosity suspensions.
Specifications:
- Mixing speeds 5-30 rpm
- Max. load 30 kg
Screen printing paste production
A screen printing paste consists of a powder to be coated onto a component, which is dispersed in a solvent-binder mixture. By varying the processing and paste composition, it can be adapted to the requirements of the subsequent process in order to obtain a uniform, reproducible coating. Furthermore, the microstructure of the finished layer can be varied by selecting the binder and other paste additives.
Thinky ARV-930 TWIN vacuum planetary centrifugal mixer
The Thinky ARV-930 TWIN vacuum planetary centrifugal mixer with switchable vacuum function is used for homogenizing and degassing pastes. By superimposing a centrifugal and a rotational movement, even viscous samples can be mixed without any problems. Thanks to its program control, the mixer is suitable for a wide range of applications. The mixer can be loaded with two containers at the same time, allowing more than 1.5 kg of material to be processed per cycle.
Specifications:
• Rotation speeds adjustable up to 1400 rpm
• Running times adjustable up to 30 min
• Adjustable vacuum from 900 to 6 mbar
• Storage of 9 programs (up to 9 individual steps per program)
• Capacity: 2 x 800 g
• Mixing and degassing
Three-roll mill Exakt 80E
The Exakt 80E three-roll mill is used to homogenize screen printing pastes while simultaneously breaking up agglomerates. The electric control unit allows the roll spacing to be adjusted with micrometer precision. The device also has a force mode in which the contact pressure between the rolls can be adjusted to produce an even finer paste.
Specifications:
• Internal calibration of gap distances
• Gap widths adjustable from 5 to 130 µm
• Contact pressures adjustable from 0 to 26 N/mm
• Mixing and grinding of pastes
