A high gloss ABS compound has been produced from a mixture containing recycled materials from waste small domestic appliances. The compound is of high quality and suitable for applications in new Electronic and Electrical Equipment. Upcycling was achieved via compounding where, virgin materials and additives, e.g. impact modifiers, stabilizers, and processing agents, were incorporated to produce the high quality compound.
The requirements for ABS were defined by Philips, who require a high gloss ABS grade for their Personal Health products. Taking into account the requirements defined by Philips, a compound of deep black, high gloss ABS including up to 30 % of recycled material was fully developed and tested. Recycled ABS for the compound was derived from waste ICT equipment and Small Domestic Appliances (SDA) at recycler Coolrec, with the first compounding trials at Sitraplas indicating that the flakes resulted in ABS compounds with high impact and excellent surface gloss and were comparable to virgin reference products. Work continues to optimize the compound, increasing recovered material use to up to 70%, while Philip’s high-quality requirements are still fulfilled.
In addition to the industrial ABS provided by Coolrec, ABS recovered using IVV’s CreaSolv® Process from both the heavy fraction of shredded SDA/ICT and ABS from TV and computer monitors is undergoing testing and optimization; whilst ABS recovered using a mechanical separation process based on LIBS technology developed by Gaiker is also being developed. Full technical data is expected to be released in the final months of the project.
Finally, a PC/ABS flame retardant grade has been developed at Tecnalia (www.tecnalia.com). The final compound is derived from a blend of recycled ABS from shredded ICT/SDA and recovered PC from waste packaging streams. The final composite fulfils fire performance and mechanical requirements for use in TV backcovers. Flame retardant system, halogen-free phosphorous based, and adequate additives have been required to upgrade the recovered polymers to the requested final performance.
The project partners toured the facilities of battery recycler, Accurec, who have designed and tested an innovative microwave treatment technology for Li-ion battery waste as part of the CloseWEEE project. The process enables recovery of critical raw materials – metals and graphite – which with appropriate treatment, can be re-used in battery manufacture or in other applications.
Accurec has long been involved in the recycling of batteries – Founded in 1995 the company now processes 4.5 million kilograms per year of NiCd, NiMH and Li-ion batteries. In the process developed in the CloseWEEE project, batteries undergo a pretreatment of discharging and mechanical processing. The Li-ion battery material is then fed into a microwave furnace where the material is heated up rapidly and the organics (electrolytes and separators, etc.) are pyrolyzed/evaporated. It produces electrolyte-free material for subsequent hydrometallurgical treatment for recovery of metals (Co, Ni, Mn, Li) and graphite. For more information, get in touch at firstname.lastname@example.org.