Mechanical behavior of PP reinforced with marble dust

Awad, Ahmed H.; El-Gamasy, Ramadan; El-Wahab, Ayman A. Abd; Abdellatif, Mohamed Mehawed

doi:10.1016/j.conbuildmat.2019.116766

Cited by 48 publications

(42 citation statements)

References 18 publications

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“…From this test, it was observed that the PP has lower thermal expansion than that of HDPE and this is in agreement with Awad et al [16,17]. This can be related to the interatomic forces.…”

Section: Tmasupporting

confidence: 90%

Mechanical and Physical Properties of PP and HDPE

Awad¹,

Gamasy²,

Wahab³

et al. 2019

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The properties of these polymers, as in the case of any materials, depending on the molecular weight of the polymer and the structure of the polymer chains. The main objective of this work is to study the mechanical and physical properties of pure PP and HDPE. To obtain a full characterization of pure polymer, samples were produced using a compression molding technique. Polymeric samples successfully filled the cavity of the die. The mechanical properties of PP and HDPE were determined using three-point bending, compression, hardness and impact test. While the physical properties were studied through density and water absorption. Also, the thermal analysis behavior was determined by thermogravimetric analysis, differential scanning calorimetry and thermomechnical analysis. Results showed the structure affects the properties. The PP showed better elastic modulus and strength due to the methyl attached to the carbon that prevents the chain rotation and hence makes the material stronger but inflexible. On the other hand, the absorbed energy of PP is less than that of HDPE. The thermogravimetric analysis results show a single weight-loss event with a degradation temperature of 310°C for HDPE and 255°C for PP. The differential scanning calorimetry shows that the crystallinity of PP (≅51) is less than that for HDPE (≅68) due to the difference in the specific heat. The coefficient of thermal expansion of HDPE is higher than that of PP due to the stronger interatomic forces.

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“…From this test, it was observed that the PP has lower thermal expansion than that of HDPE and this is in agreement with Awad et al [16,17]. This can be related to the interatomic forces.…”

Section: Tmasupporting

confidence: 90%

Mechanical and Physical Properties of PP and HDPE

Awad¹,

Gamasy²,

Wahab³

et al. 2019

Self Cite

View full text Add to dashboard Cite

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“…% filler concentration for a 180 °C molding temperature ( Figure 7 c). This reduction in tensile and flexural strength with filler content may be due to the agglomeration phenomenon of filler particles in the PP matrix because of finer particle sizes [ 9 , 14 , 33 ]. The flexural strength of the MP-PP composite is a maximum of 58.11 ± 0.68 MPa at a 160 °C molding temperature with 20 wt.…”

Section: Resultsmentioning

confidence: 99%

“…About 16 million tons of this waste has been created in India alone annually [ 5 , 6 , 7 , 8 ]. These marble processing industries involve mines and processing units for manufacturing tiles, blocks, decorative articles, waste disposal areas, and other activities [ 9 , 10 ]. Proper handling and management of marble wastes are necessary to protect the environment from the soil, water, and air contamination [ 6 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…Marble waste particulates in a polypropylene matrix with wood particulates [ 1 ] and magnesium hydroxide for making flame retardant composite material [ 36 ] were also analyzed. Polymer composites were fabricated using waste marble particulates with unsaturated polyester resin [ 37 ], epoxy resin [ 7 , 38 ], and polypropylene matrix [ 9 ]. However, as per the authors’ best knowledge, very few works have been reported on the use of marble waste particulates (MPs) as filler in polypropylene (PP) composites by the injection molding (at different temperatures) technique and their physical and mechanical characterization.…”

Section: Introductionmentioning

confidence: 99%

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Transforming Marble Waste into High-Performance, Water-Resistant, and Thermally Insulative Hybrid Polymer Composites for Environmental Sustainability

et al. 2020

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Marble waste is generated by marble processing units in large quantities and dumped onto open land areas. This creates environmental problems by contaminating soil, water, and air with adverse health effects on all the living organisms. In this work, we report on understanding the use of calcium-rich marble waste particulates (MPs) as economic reinforcement in recyclable polypropylene (PP) to prepare sustainable composites via the injection molding method. The process was optimized to make lightweight and high-strength thermally insulated sustainable composites. Physicochemical, mineralogical, and microscopic characterization of the processed marble waste particulates were carried out in detail. Composite samples were subsequently prepared via the injection molding technique with different filler concentrations (0%, 20%, 40%, 60%, and 80%) on weight fraction at temperatures of 160, 180, and 200 °C. Detailed analysis of the mechanical and thermal properties of the fabricated composites was carried out. The composites showed a density varying from 0.96 to 1.27 g/cm3, while the water absorption capacity was very low at 0.006%–0.034%. Marble waste particulates were found to considerably increase the tensile, as well as flexural, strength of the sustainable composites, which varied from 22.06 to 30.65 MPa and 43.27 to 58.11MPa, respectively, for the molding temperature of 160 °C. The impact strength of the sustainable composites was found to surge with the increment in filler concentration, and the maximum impact strength was recorded as 1.66 kJ/m2with 20% particulates reinforcement at a molding temperature of 200 °C. The thermal conductivity of the particulates-reinforced sustainable composites was as low as 0.23 Wm−1K−1 at a 200 °C molding temperature with 20% and 40% filler concentrations, and the maximum thermal conductivity was 0.48 Wm−1K−1 at a 160 °C molding temperature with 80% filler concentration. Our findings have shown a technically feasible option for manufacturing a lightweight composite with better mechanical and thermal properties using marble waste particulates as a potential civil infrastructural material.

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“…where Χc is the crystallinity, ∆H1 is the thermal enthalpy of the sample (J/g) given by measuring the peak area in the thermogram, and ΔH2 is the thermal enthalpy of 100% crystalline PP (209 J/g) [35]. As shown in Figure 6b, the crystallinity of the e-spun fibers did not change greatly when the dosage of ZnO was lower than 4 wt.%.…”

Section: Thermal Properties Of E-spun Pp Fibermentioning

confidence: 94%

Preparation and Performance of Ultra-Fine Polypropylene Antibacterial Fibers via Melt Electrospinning

Fan

et al. 2020

Polymers

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Polypropylene (PP) fibers are employed commonly as the raw material of technical textiles (nonwovens), and the research focuses on fine-denier fibers and their functionalities. In this work, antibacterial PP masterbatches with different dosage (1–5 wt.%) of nano-ZnO particles as the antibacterial agent were prepared via a twin-screw extruder. The as-prepared PP masterbatches were electrospun on a home-made electrospinning device to afford ultra-fine PP fibers. The morphologies of as-spun ultrathin PP fibers with 16 μm of average diameter were observed by SEM. The structure and element distribution were characterized by means of energy-dispersive spectroscopy (EDS) and Fourier-transfer infrared spectroscopy (FTIR), respectively. There was some zinc obviously distributed on the surface when a dosage of ZnO more than 1 wt.% was used, which contributed to the antibacterial activity. The crystallinity of PP fibers was not affected strongly by the dosage of ZnO based on the differential scanning calorimetry (DSC) heating curves, while thermal decomposition improved with the increase in ZnO content, and the mechanical strength decreased predictably with the increase in inorganic ZnO content.

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Mechanical behavior of PP reinforced with marble dust

Cited by 48 publications

References 18 publications

Mechanical and Physical Properties of PP and HDPE

Mechanical and Physical Properties of PP and HDPE

Transforming Marble Waste into High-Performance, Water-Resistant, and Thermally Insulative Hybrid Polymer Composites for Environmental Sustainability

Preparation and Performance of Ultra-Fine Polypropylene Antibacterial Fibers via Melt Electrospinning

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