Investigation of a scalable barrel atmospheric plasma reactor for the treatment of polymer particles

Plasma treatment of polymer powders – from laboratory research to industrial application

“…An inner wire HV electrode (B) is another co‐axial approach . Also, arrangements with shell type (C) or parallel electrodes (D) are applied, as well as external bar electrodes, which rotate a dielectric tube (E) . A unique configuration are multichannel DBDs providing a central afterglow treatment zone (F) .…”

“…(D) Rectangular cross‐section with parallel electrodes . (E) Rotating dielectric tube with external electrode bars . (F) Multichannel configuration with plasma afterglow directed toward a center treatment zone…”

“…Figure illustrates various atmospheric pressure plasma reactor setups designed to treat polymer powders. These include FBRs, CFBRs, batch reactors, barrel reactors, and downer reactors . Table provides the major experimental characteristics (e.g., power, polymer type, gas, treatment time) of the described setups including main experimental results.…”

“…Atmospheric pressure plasma reactor set‐ups used for the treatment of polymer powders. (A) FBR with capacitive coupled electrodes (Sharma et al), (B) FBR with ultrasonic horn (Kogoma et al), (C) FBR with an atmospheric plasma jet (Sachs et al), (D) FBR with quartz chamber (Abourayana et al), (E) barrel reactor with roller arrangement (Abourayana et al), (F) CFBR with ultrasonic horn and water cooled inner electrode and air cooled copper mesh electrode (Nakajima et al), (G) CFBR with multichannel plasma device with afterglow of 64 DBD discharge channels (Oberbossel et al), (H) batch type process with plasma jet for gravity feeding of particles (Gilliam et al), (I) batch type plasma generator and frictional charger with wire electrode (Murata and Hara), (J) batch reactor with surface DBD (Yoo et al), (K) downer with a plasma jet afterglow (Put et al), (L) gravity‐fed DBD channel reactor with rectangular cross‐section parallel plate electrodes (Píchal et al), (M) downer reactor with three pairs of water‐cooled shell electrodes (Nessim et al), (N) downer reactor with coaxial DBD torch (Nessim et al), (O) downer reactor with multichannel plasma device (Oberbossel et al)…”

Enhancing the mechanical performance of additive manufactured polymer components using atmospheric plasma pre‐treatments

“…This study reports the performance of barrel atmospheric plasma system for the pre‐treatment of both ABS and PLA polymer particles prior to filament formation. The effectiveness of the barrel plasmas for the pre‐treatment of powders has previously been reported . In this study the effect of systematically altering the atmospheric plasma treatment conditions on the level of polymer particle activation is investigated.…”