Value-added utilization of coal fly ash in polymeric composite decking boards

Guxia Wang; Zhaoshuai Li; Jun Yan; Yongqiang Qian; Yen Wei; Dan Li; Shengwei Guo

Journal of Materials Research and Technology (Mar 2023)

Value-added utilization of coal fly ash in polymeric composite decking boards

Guxia Wang,
Zhaoshuai Li,
Jun Yan,
Yongqiang Qian,
Yen Wei,
Dan Li,
Shengwei Guo

Affiliations

Guxia Wang: Ningxia Key Laboratory of Solar Chemical Conversion Technology, School of Chemistry & Chemical Engineering, North Minzu University, Yinchuan 750021, PR China; Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, School of Chemistry & Chemical Engineering, North Minzu University, Yinchuan 750021, PR China
Zhaoshuai Li: Ningxia Key Laboratory of Solar Chemical Conversion Technology, School of Chemistry & Chemical Engineering, North Minzu University, Yinchuan 750021, PR China; Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, School of Chemistry & Chemical Engineering, North Minzu University, Yinchuan 750021, PR China
Jun Yan: School of Materials Science & Engineering, North Minzu University, Yinchuan 750021, PR China
Yongqiang Qian: School of Materials Science & Engineering, North Minzu University, Yinchuan 750021, PR China
Yen Wei: School of Materials Science & Engineering, North Minzu University, Yinchuan 750021, PR China; Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, PR China
Dan Li: School of Materials Science & Engineering, North Minzu University, Yinchuan 750021, PR China; International Scientific and Technological Cooperation Base of Industrial Solid Waste Cyclic Utilization and Advanced Materials; Key Laboratory of Polymer Materials and Manufacturing Technology, Yinchuan 750021, PR China; Corresponding author.
Shengwei Guo: School of Materials Science & Engineering, North Minzu University, Yinchuan 750021, PR China; International Scientific and Technological Cooperation Base of Industrial Solid Waste Cyclic Utilization and Advanced Materials; Key Laboratory of Polymer Materials and Manufacturing Technology, Yinchuan 750021, PR China; Corresponding author.

Journal volume & issue: Vol. 23
pp. 4199 – 4210

Abstract

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The value-added utilization of coal fly ash (CFA) remains a major challenge worldwide, as tens of millions of tons CFA are stockpiled or landfilled per year in China along, leading to a waste of resources and environmental pollution. Herein, a facile, environmentally friendly, and value-added strategy of combining modified CFA with polyvinyl chloride (PVC) to form CFA/PVC composites, was adopted to effectively solve the problems caused by the utilization of coal resources. In this process, the composites were prepared by hot-mixing CFA with aluminate coupling agent, PVC and additives, followed by extrusion, cooling, shaping, traction, and cutting. The resulting material with excellent mechanical properties (static bending strength, tensile strength, and hardness are 34.9 MPa, 17.1 MPa, and HRR 103, respectively) was successfully utilized as the CFA-plastic composites decking boards (CFA/PVC composites). Compared with the conventional materials for this use, our material exhibited comparable performance but is more attractive from both environmental and economical point of view. More importantly, this strategy reduces the cost for production of decking boards by 10–20%, as the process is rather simple and robust, it was industrialized.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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