Analysis of factors influencing GFRP shredding energy consumption and the physical properties of the resulting recyclates

被引:1
|
作者
Cheng, Shuai [1 ]
Lai, Nai Yeen Gavin [2 ]
Wong, Kok Hoong [3 ]
机构
[1] Univ Nottingham Ningbo China, Dept Mech Mat & Mfg Engn, Composites Grp, Ningbo 315100, Peoples R China
[2] Univ Nottingham Ningbo China, Sensor Sensor Networks & Instrumentat Res Grp, Dept Mech Mat & Mfg Engn, Ningbo 315100, Peoples R China
[3] Univ Nottingham Ningbo China, Dept Mech Mat & Mfg Engn, Adv Energy & Environm Mat & Technol Res Grp, Ningbo 315100, Peoples R China
关键词
GFRP waste; Mechanical recycling; Shredding; Recyclate; PROCESS PARAMETERS; PART I; MODE-I; CARBON; COMPOSITES; PERFORMANCE; FIBERS;
D O I
10.1016/j.compositesb.2024.111805
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Glass fibre reinforced polymer (GFRP) remains the dominant composite produced globally due to its low cost, high specific mechanical properties and chemical resistance performances. These unique features, however, impose significant recycling challenges for their end-of-life parts. Although there are various recycling technologies available, all of them require the waste GFRP to be reduced in size in order to enhance the recycling process efficiency. In this work, a full factorial design analysis was conducted to identify factors that influenced specific shredding energy consumption, average physical size and resin content of shredded GFRP recyclates. Factors investigated were glass fibre fabric architecture in GFRP wastes (non-crimp and nonwoven), GFRP waste feed rate (10-60 kg/h) and screen aperture of the shredding process (6-20 mm). It was observed that specific shredding energy was not significantly affected by the fabric architecture but could be reduced by opting for larger screen aperture and/or lower feed rate. However, improvement to shredding energy efficiency was achieved if 6 mm diameter screen was selected together with 60 kg/h feed rate. The 60 kg/h feed rate was found to be ideal in reducing oversize recyclates content but did not affect the median particle size of the remaining recyclates, which was found to be influenced by screen aperture and fabric architecture. Resin-rich and fibre-rich fractions were identified from the recyclates. The resin content of the former was found to be sensitive to all the studied factors.
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页数:11
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