scholarly journals Use of iron mine tailing as fillers to polyethylene

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ítalo R. Coura ◽  
Ottavio R. D. R. Carmignano ◽  
Ana Pacheli Heitmann ◽  
Fernando S. Lameiras ◽  
Rochel M. Lago ◽  
...  
Keyword(s):  
High Density Polyethylene ◽  
Good Alternative ◽  
Economic Problem ◽  
High Density ◽  
Mine Tailing ◽  
Morphological Properties ◽  
Iron Mine ◽  
Batch Mixing ◽  
Plastic Industry ◽  
Properties Of Composites

AbstractThe iron mine tailings accumulation in dams is an environmental and economic problem. The composite based on high-density polyethylene/iron mine tailing production for the application of wood plastic and some items of domestic plastic industry can be a good alternative to reduce the rejects in the environment. This work presents the influence of the processing methodology in the mechanical, thermal and morphological properties of composites based on the high-density polyethylene/iron mine tailing. Four methodology processing by continuous and/or batch mixing were available. The iron mine tailing particles in the polymer matrix promoted an increase in mechanical strength and thermal stability. Besides, the particles acted as flame retardant. The iron mine tailing materials produced using batch mixing showed more significant modifications in the properties due to the better dispersion of the filler as shown by scanning electron microscopy.

Physicomechanical properties of composites based on various types of polyethylene and aluminum

2020 ◽  
Vol 10 ◽  
pp. 48-55
Author(s):  
H. V. Allakhverdiyeva ◽  
◽  
N. T. Kakhramanov ◽  
I. I. Ismayilov ◽  
◽  
...  
Keyword(s):  
Tensile Stress ◽  
High Density Polyethylene ◽  
Ultimate Tensile Stress ◽  
High Density ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Aluminum Particles ◽  
Elongation At Break ◽  
Elastic Module ◽  
Properties Of Composites

The paper presents the results of a study of the effect of aluminum content on the physic-mechanical properties of composites based on high density polyethylene and low density polyethylene. The properties of metal-filled composites, such as ultimate tensile stress, elongation at break, elastic module, melt flow rate, and heat resistance, were studied. According to the data obtained, the loading of aluminum into the composition of low density polyethylene contributes to a monotonic increase in the ultimate tensile stress and the elastic module. When aluminum is loading into the composition of high density polyethylene, on the contrary, a natural decrease in the ultimate tensile stress and elongation at break of the composites is observed. It is shown that when using a compatibilizer, which is polyethylene modified with maleic anhydride, a significant increase in the ultimate tensile stress of high-density polyethylene composites is observed. A schematic representation of the structure of composites with an interpretation of the probable mechanism of hardening of the material in the presence of a compatibilizer is given. It is shown that the crystallinity of the initial polyethylene has a significant effect on the hardening effect of composites. Electron microscopic micrographs of the structure of a filled composite without and with compatibilizer are given. A comparative assessment shows that in the presence of a compatibilizer, aluminum particles are in the bulk of the polymer matrix, i.e. are not in an isolated state. It is assumed that HDPE macrochains free of maleic anhydride (MA) are involved in the formation of crystalline formations, and small sections of macrosegments containing polar groups of MA are concentrated mainly in amorphous regions and in defects in crystalline structures in the form of passage chains. The concentration of PEMA macrosegments containing MA in the narrow amorphous space of HDPE favorably affects the increase in the adhesive forces of interaction on the surface of aluminum particles, which affects the preservation of the ultimate tensile stress at a relatively high level over a wide range of aluminum concentrations.

Effect of Technical Carbon the Deformation-Strength Properties of Low Pressure Polyethylene

2020 ◽  
Vol 869 ◽  
pp. 229-233
Author(s):  
Timur A. Borukaev ◽  
Abubekir Kh. Shaov ◽  
Raisa D. Archakova ◽  
Zakhirat Kh. Sultigova
Keyword(s):  
Carbon Black ◽  
Polymer Matrix ◽  
High Density Polyethylene ◽  
Entire Range ◽  
Filler Content ◽  
Strength Properties ◽  
Optimal Combination ◽  
High Density ◽  
Strength And Ductility ◽  
Properties Of Composites

The influence of carbon black on the deformation-strength properties of high density polyethylene is considered. It was found that the deformation-strength properties of the polymer matrix change over the entire range of the filler content. The amount of carbon black that can be introduced into high-density polyethylene and obtained a composite material with the optimal combination of stiffness, strength and ductility is established. It was shown that the change in the deformation-strength properties of composites is due to the behavior and influence of carbon black particles on the structure of the polymer matrix.

Mechanical and morphological properties of high density polyethylene and polylactide blends

2014 ◽  
Vol 34 (9) ◽  
pp. 813-821 ◽  
Author(s):  
Gaurav Madhu ◽  
Haripada Bhunia ◽  
Pramod K. Bajpai ◽  
Veena Chaudhary
Keyword(s):  
High Density Polyethylene ◽  
High Density ◽  
Morphological Properties ◽  
Heat Of Fusion ◽  
Melt Blending ◽  
Scanning Calorimetry ◽  
Elongation At Break ◽  
Blown Film ◽  
Blending Method ◽  
Spectroscopy Studies

Abstract Polyblend films were prepared from high-density polyethylene (HDPE) and poly(l-lactic acid) (PLLA) up to 20% PLLA by the melt blending method in an extrusion mixer with post-extrusion blown film attachment. The 80/20 (HDPE/PLLA) blend was compatibilized with maleic anhydride grafted polyethylene (PE-g-MA) in varying ratios [up to 8 parts per hundred of resin (phr)]. Tensile properties of the films were evaluated to obtain optimized composition for packaging applications of both non-compatibilized and compatibilized blends. The compositions HDPE80 (80% HDPE and 20% PLLA) and HD80C4 (80% HDPE, 20% PLLA and 4 phr compatibilizer) were found to be optimum for packaging applications. However, better tensile strength (at yield) and elongation (at break) of 80/20 (HDPE/PLLA) blend were noticed in the presence of PE-g-MA. Further, thermal properties and morphologies of these blends were evaluated. Differential scanning calorimetry (DSC) study revealed that blending does not much affect the crystalline melting point of HDPE and PLLA, but heat of fusion of 80/20 (HDPE/PLLA) blend was decreased as compared to that of neat HDPE. Spectroscopy studies showed evidence of the introduction of some new groups in the blends and gaining compatibility in the presence of PE-g-MA. The compatibilizer influenced the morphology of the blends, as apparent from scanning electron microscopy (SEM) and supported by Fourier transform infrared (FTIR).

Composites of high density polyethylene and different grades of calcium carbonate: Mechanical, rheological, thermal, and morphological properties

2006 ◽  
Vol 101 (4) ◽  
pp. 2559-2564 ◽  
Author(s):  
Sylvia C. S. Teixeira ◽  
Maria M. Moreira ◽  
Aline P. Lima ◽  
Luciene S. Santos ◽  
Bianca M. da Rocha ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
High Density Polyethylene ◽  
High Density ◽  
Morphological Properties

scholarly journals Tensile, Flexural, and Morphological Properties of Jute/Oil Palm Pressed Fruit Fibers Reinforced High Density Polyethylene Hybrid Composites

Fibers ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 71
Author(s):  
Oluyemi Ojo Daramola ◽  
Oluwatosin Abiodun Balogun ◽  
Adeolu Adesoji Adediran ◽  
Sheriff Olalekan Saka ◽  
Isiaka Oluwole Oladele ◽  
...  
Keyword(s):  
Oil Palm ◽  
High Density Polyethylene ◽  
Hybrid Composites ◽  
Sodium Hydroxide Solution ◽  
Fiber Surface ◽  
Morphological Characterization ◽  
High Density ◽  
Jute Fiber ◽  
Morphological Properties ◽  
Flexural Properties

The incorporation of materials that were formally regarded as agricultural wastes into polymeric matrix has drawn the attention of many researchers in recent years. This research focused on reinforcing high-density polyethylene (HDPE) matrix with treated jute fiber (JF)/oil palm pressed fruit fibers (OPPFF) at varying weight proportions. JF and OPPFF were cut to 2.5 mm length and were chemically treated thereafter with 1 M and 1.5 M sodium hydroxide solution respectively. The composites were produced using the compression molding technique. The morphological characterization of the fibers and composites for untreated and treated samples was studied with the aid of a scanning electron microscope (SEM). Tensile and flexural properties of the produced composite samples were also determined. From the result, the surface morphology of the fiber after treatment showed that there was obvious exposure of the fiber surface and removal of impurities as this influenced the microstructure of the composites and in turn the tensile and flexural properties. Hence, it was observed that 20 wt.% treated jute fiber addition shows the most significant enhancements in terms of tensile and flexural properties. The study exposed the effect of surface modification of JF/OPPF hybridization on HDPE matrix composite.

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