期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 351, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2022.128977
关键词
Wood plastic composites; Ultra-highly filled; Rheology; Recycling; Mechanical properties
资金
- National Key Research and Devel- opment Program of China [2019YFD1101204]
- National Natural Science Foundation of China [31901251, 32071698]
- Research and Development Program in Key Areas of Guangdong Prov- ince [2020B0202010008]
This study successfully fabricated low-cost and high-strength ultra-high-filled wood fiber/polypropylene composites using recycled polypropylene and wood fiber, showing excellent mechanical properties and creep resistance.
The development of wood-plastic composites (WPCs) is one of the key scientific interests in recent years for recycling industrial waste and reducing environmental pollution risks. In this study, low-cost and high-strength ultra-high-filled wood fiber/polypropylene composites (UH-WPCs) were fabricated using recycled polypropylene (R-PP) as the polymer matrix and 60-85 wt% recycled wood fiber (R-WF) from the waste sawdust of phenolic resin enhanced wood products as reinforcement. The UH-WPCs possessed robust mechanical properties and better creep resistance than composites using original WF or PP due to the sufficient R-WF/R-PP interface interaction. Specifically, compared with R-WF/PP composites, the maximum increases in the tensile, flexural, and impact strength of the R-WF/R-PP composites at 80 wt% R-WF content were 94.30%, 89.66%, and 96.33%, respectively. The Burges model could well predict the solid-like rheological behavior of UH-WPCs. This study formalizes a preventive sustainable strategy for full-component utilization of the industrial waste and residue.
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