“…According to the obtained results, the tensile strength and tensile modulus of the prepared RHDPE/WGP composite without a compatibilizer, as in samples S 5,0 , S 10,0 , S 20,0 and S 30,0 ,decreased with increasing glass reinforcement particle content, as shown in Figure 4 . This result could be attributed to the imperfect adhesion between the polymer matrix and glass particles [ 19 ], which led to an aggregation of glass particles (confirmed from SEM images in the next section) and that in turn made the reinforcement particles unable to support stress transferred from the polymer matrix [ 10 , 20 ]. Furthermore, the concentration of stress at the particle-matrix interface region leads to weakness of the particle-matrix interaction and consequently reduces the tensile strength [ 21 ].In other words, the tensile strength is a function of the surface contact area and the interfacial strength, the modulus is a function of the surface contact area, and filler agglomeration affects both factors.…”
Several reinforcement materials are incorporated into a polymeric matrix to improve the mechanical properties and reduce the cost of the obtained composites. In this work, recycled high-density polyethylene/waste glass powder composites, compatibilized with maleic anhydride-grafted polyethylene, were prepared using a two-roll mill and compression molding techniques. Four levels of waste glass powder, 2, 10, 20 and 30% by weight, and five levels of the compatibilizer, polyethylene grafted with maleic anhydride (0.5, 1.5, 2.5, 5 and 7.5%by weight), were used. The effect of adding waste glass powder and compatibilizer concentration on the composite's mechanical properties, such as tensile strength, tensile strain, tensile modulus and thermal properties was studied. The results showed that superior mechanical properties were obtained and that the tensile strength and modulus increased with increasing waste glass powder content and compatibilizer concentration by 20 and 1.5 wt%, respectively. However, the elongation at the break decreased with the increase in both factors. The composite, which was prepared under ideal conditions, has high thermal stability and can be easily recycled and reprocessed for five cycles with high mechanical properties. This study recommends that the prepared composite, under optimum conditions, can be used as a cost-effective automobile dashboard material.
“…According to the obtained results, the tensile strength and tensile modulus of the prepared RHDPE/WGP composite without a compatibilizer, as in samples S 5,0 , S 10,0 , S 20,0 and S 30,0 ,decreased with increasing glass reinforcement particle content, as shown in Figure 4 . This result could be attributed to the imperfect adhesion between the polymer matrix and glass particles [ 19 ], which led to an aggregation of glass particles (confirmed from SEM images in the next section) and that in turn made the reinforcement particles unable to support stress transferred from the polymer matrix [ 10 , 20 ]. Furthermore, the concentration of stress at the particle-matrix interface region leads to weakness of the particle-matrix interaction and consequently reduces the tensile strength [ 21 ].In other words, the tensile strength is a function of the surface contact area and the interfacial strength, the modulus is a function of the surface contact area, and filler agglomeration affects both factors.…”
Several reinforcement materials are incorporated into a polymeric matrix to improve the mechanical properties and reduce the cost of the obtained composites. In this work, recycled high-density polyethylene/waste glass powder composites, compatibilized with maleic anhydride-grafted polyethylene, were prepared using a two-roll mill and compression molding techniques. Four levels of waste glass powder, 2, 10, 20 and 30% by weight, and five levels of the compatibilizer, polyethylene grafted with maleic anhydride (0.5, 1.5, 2.5, 5 and 7.5%by weight), were used. The effect of adding waste glass powder and compatibilizer concentration on the composite's mechanical properties, such as tensile strength, tensile strain, tensile modulus and thermal properties was studied. The results showed that superior mechanical properties were obtained and that the tensile strength and modulus increased with increasing waste glass powder content and compatibilizer concentration by 20 and 1.5 wt%, respectively. However, the elongation at the break decreased with the increase in both factors. The composite, which was prepared under ideal conditions, has high thermal stability and can be easily recycled and reprocessed for five cycles with high mechanical properties. This study recommends that the prepared composite, under optimum conditions, can be used as a cost-effective automobile dashboard material.
“…Besides, some micro-cracks on their fractured surfaces, due to the poor interfacial adhesion between fibers and the PEr matrix, resulting from the tensile stress act as stress concentration points and facilitate easy failure. 55 According to Deepak et al, 58 high reinforcement content induces the generation of fiber aggregates; causing pulled out and voids . Similar behavior also was observed by Ariawan et al and Singh et alFigure 11.SEM images of fractured tensile specimens for PEr and PEr/15PR and PEr/15PR-C composites.…”
Section: Resultsmentioning
confidence: 99%
“…Besides, some micro-cracks on their fractured surfaces, due to the poor interfacial adhesion between fibers and the PEr matrix, resulting from the tensile stress act as stress concentration points and facilitate easy failure. 55 According to Deepak et al, 58 The SEM image of PEr/15PR-C composite shown in Figure 11(c) reveals the coupling agent used also caused the fiber pull-out phenomenon in bundled form and welldefined holes created in the matrix owing to fiber pull out (delamination). This could be attributed to weak fibermatrix adhesion.…”
This study proposes that green composites using recycled plastic bags (PEr) extruded with pineapple fiber waste (PR) from a juice industry to increase pineapple’s economic value stimulate practices that prioritize recycling and development of new materials. PEr composites were prepared using PR as a filler, using different fiber loadings of 5, 10, and 15 wt%, and the use of a coupling agent, prepared via extrusion and injection molding. The samples were investigated by Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis, inflammability, mechanical tests (tensile, impact, and shore hardness), scanning electron microscopy, and water absorption tests. FTIR results demonstrated that the addition of PR to the PEr caused a decrease in the characteristic bands of neat PEr, evidencing the chemical interactions. Thermal analysis showed that the addition PR decreased composites' thermal stability, causing relatively higher percentages of char compared to neat PEr, which increased the burning rate of composites, except for PEr/15PR and PEr/5PR-C. Green composites exhibited higher tensile modulus and hardness than PEr, but the impact tests presented a decrease in the fibers' addition to the PEr due to the reduction of toughness and resilience. SEM of fractured surface composites presented microcracks, voids, and fibers breakage in the interface. The composites showed low water absorption (up to 0.804%). The coupling agent’s use presented a low influence on the mechanical and thermal properties and a slight decrease in water absorption. These results demonstrate o potential of the reuse of plastic bags and industrial waste for green composites.
“…Research has shown that the addition of alumina as a reinforcing filler in the HDPE matrix promotes changes in the thermal, physical and mechanical properties of the composite, as well as changes in the crystallinity of the polymer. The effects presented by the authors showed an increase in the modulus of elasticity of up to 501% compared to the pure matrix [24][25][26].…”
This article explores the ballistic and mechanical performance of HDPE matrix composites reinforced with alumina and silicon carbide particles, to be used as lightweight body armor. After processing, the composites were evaluated by tensile tests, Izod impact, and Shore D hardness. In addition, depth of penetration (DOP) and energy absorption tests were performed with chronograph simulating .22 ammunition in the ballistic test. Samples A80 and A70 had the lowest DOP result (15.98 and 17.98 mm respectively) indicating that these samples had the best ballistic performance. Mechanical tests performed on samples A00, A40, A50, and A60 showed that the deformation and tensile strength were reduced with the addition of ceramic reinforcement. Impact resistance also decreased. Shore D hardness showed a considerable increase in hardness of A40, A50, and A60 compared to A00.
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