Journal
JOURNAL OF COMPOSITE MATERIALS
Volume 45, Issue 26, Pages 2811-2816Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0021998311401937
Keywords
red mud; polypropylene; composite; mechanical properties; thermal properties
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Funding
- Open Foundation of National Laboratory of Mineral Materials of China University of Geosciences [519002310062 08A004, 08A006, 08A003]
- Beijing Education Committee
- City University of Hong Kong [7008009]
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Polypropylene (PP) based composites containing 0, 5, 10, 15, 20, 30, and 50 wt% red mud are granulated by twin-screw extrusion and injection molding. Their mechanical properties such as tensile strength, flexural strength and modulus, impact strength, and thermal properties are determined. After filling with red mud, the flexural strength and modulus, thermal deformation temperature, and Vicat softening temperature increase, whereas the impact strength decreases with increasing red mud contents. The maximum tensile strength is observed from the PP doped with 15 wt% red mud. Scanning electron microscopy (SEM) is used to investigate the dispersion of red mud in the PP matrix.
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