title: Production and characterization of polypropylene composites filled with glass fibre recycled from pyrolysed waste printed circuit boards.
abstract: Waste printed circuit boards (WPCBs) are composed of nearly 70% non-metals, which are generally recycled as low-value filling materials or even directly dumped in landfills. In this study, polypropylene (PP) composites reinforced by recycled pure glass fibres (RGF) from pyrolysed WPCBs were successfully produced. The manufacturing process, mechanical properties and thermal behaviour of the composites were investigated. The results showed that the appropriate addition of RGF in the composites can significantly improve the mechanical properties and thermal behaviour. When the added content of RGF was 30%, the maximum increment of tensile strength, impact strength, flexural strength and flexural modulus of the glass fibre (GF)/PP composites are 25.93%, 41.38%, 31.16% and 68.42%, respectively, and the vicat softening temperature could rise by 4.6°C. Furthermore, leaching of the GF/PP composites was also investigated. The GF/PP composites exhibited high performance and non-toxicity, offering a promising method to recycle RGF from pyrolysed WPCBs with high-value applications.
authors.affiliation: a School of Environmental Science and Engineering , Guangdong University of Technology , Guangzhou 510006 , People's Republic of China.
authors.forename: Shenyong
authors.initials: S
authors.lastname: Li
authors.forename: Shuiyu
authors.initials: S
authors.lastname: Sun
authors.forename: Haifeng
authors.initials: H
authors.lastname: Liang
authors.forename: Sheng
authors.initials: S
authors.lastname: Zhong
authors.forename: Fan
authors.initials: F
authors.lastname: Yang
mesh_terms: D001965:Bromides / Q000032:analysis; D059029:Electronic Waste; D005898:Glass / Q000737:chemistry*; D019216:Metals, Heavy / Q000032:analysis; D018583:Pliability; D011126:Polypropylenes / Q000737:chemistry*; D059027:Recycling / Q000379:methods*; D012037:Refuse Disposal / Q000379:methods*; D013314:Stress, Mechanical; D013718:Tensile Strength; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D001965:Bromides; D019216:Metals, Heavy; D011126:Polypropylenes; D014874:Water Pollutants, Chemical; C009753:fiberglass
keywords: glass fibre; leaching toxicity; polypropylene composites; pyrolysis; waste printed circuit boards