A Study on the Flame-Retardant Performance of Recycled Paper Building Materials Manufactured by 3D Printer

The increase in non-face-to-face lifestyles due to COVID-19 worldwide have shown an delivery services. number of parcels 2020 was 3.373 billion, 20.9% from 2.788 billion 2019. This phenomenon increased box waste. Against this background, study attempted develop building materials the recycling boxes. In study, self-developed WC (wet cellulose) 3D printer confirmed standardization and uniform performance sample by filling material supply cylinder with cellulose filaments spraying composite through a 10 mm nozzle. filament for is based on extracted wastepaper, used mixing additives. After manufacturing specimen using printer, reliability test flame-retardant conducted according ISO 11925-2 method. As result experiment, at 40 wt% or greater ceramic binder content. addition, achieved accurate results producing specimens physical properties. we that 3D-printed can be customized prevent fire spread.