Definición de metodología para la fabricación de material compuesto a base de polietileno de tereftalato y virutas metálicas
20 Aug 2021-
TL;DR: In this paper, a material compuesto a base of Polietileno de Tereftalato (PET) and virutas metalicas de acero and aluminio, desde el proceso empleado for la fabricacion de placas (probetas), hasta la realizacion de tomografia computarizada and ensayos de tension.
Abstract: En este articulo se presenta el desarrollo de un material compuesto a base de Polietileno de Tereftalato (PET) y virutas metalicas de acero y aluminio, desde el proceso empleado para la fabricacion de placas (probetas), hasta la realizacion de tomografia computarizada y ensayos de tension. A pesar de que los resultados de resistencia del material han sido menores respecto a los que presenta un material PET virgen, este estudio ha permitido definir las condiciones del proceso de fabricacion de las placas.
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01 Dec 2010
TL;DR: In this paper, the change of surface potential decay, surface resistivity, contact angle, and XPS of ultraviolet-treated PET films were investigated, and it was found that the changes affected by the surface degradation of PET film were caused by the generation of carboxyl groups through the chain decomposition and recombination with oxygen molecules in the air.
Abstract: This paper deals with the change of surface potential decay, surface resistivity, contact angle and XPS of ultraviolet-treated PET films. From the experimental results on the surface potential decay of UV degraded-samples, it was found that the accumulation of charge is decreased and the surface potential decay time is shortened. Also, from the result of XPS, it was found that the changes affected by the surface degradation of PET film were caused by the generation of carboxyl groups through the chain decomposition and recombination with oxygen molecules in the air.
21 citations
References
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TL;DR: The recycling of post-consumer PET (POSTC-PET) as a technology is a cross-disciplinary practice with many fields of science involved including polymer chemistry and physics, process engineering and manufacturing engineering.
731 citations
"Definición de metodología para la f..." refers background in this paper
...Con base en los resultados experimentales y las condiciones recomendadas [8][9][10][11], para el proceso de fundición de este material son: secado de...
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...2 °C reportada en las referencias [8][9]....
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05 Jan 2011
TL;DR: In this article, the authors summarize all PET crystallization studies by referring to all studies carried out before and conclude that this subject has taken in very good interest so far and it is believed that this interest will go on increasingly.
Abstract: Polyethylene terephthalate, commonly coded as PET, PETE, is a thermoplastic polymer resin of the polyesters and is used in liquid containers, drinks, food and synthetic fibres. Depending on its processing and thermal conditions, PET may exist both as amorphous and as semi-crystalline. PET may appear opaque, white and transparent depending on its crystalline and amorphous structure. Its crystallinity and consequently its physical and mechanical properties are highly dependent on processing conditions like processing temperature, cooling rate, stretching process etc. In this study, it was tried to summarize all about PET crystallization by referring to all studies carried out before. Crystallization is very significant properties affecting all mechanical and physical properties of PET just as for all kind of polymers. As a result, this subject has taken in very good interest so far and it is believed that this interest will go on increasingly.
106 citations
"Definición de metodología para la f..." refers background in this paper
...El estudio y desarrollo de materiales compuestos a base de materiales considerados como desecho se presenta como una alternativa, aunque en general también representa un reto por la diferencia que presentan los materiales en lo que a propiedades se refiere, así como los procesos de fabricación involucrados [3]....
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01 Jan 2008
TL;DR: A review of works that cover PET post-consumer waste recycling and application during last twenty years is presented in this article, where it is shown that physically recycled PET can be used in the blends with other polymers, such as high and low density polyethylene, polycarbonates, polyvinyl chloride, etc.
Abstract: This paper presents a review of works that cover PET post-consumer waste recycling and application during last twenty years. It is shown that physically recycled PET can be used in the blends with other polymers, such as high and low density polyethylene, polycarbonates, polyvinyl chloride, etc. The compatibilizers and other additives often are used to obtain valuable blends of recycled PET with virgin or other plastics. Molecular weights of blended polymers must be similar to obtain the compatible blends of recycled PET with other plastics, therefore, additional processes are needed for the lowering average molecular weights of the polymers. Chemically recycled PET by esterifying the polyester with an excess of reactant such as diols, diamines, alcohols, or water can be used as starting ingredients for synthesis of other polymers. A focus on the production of oligoesters coming from the glycolysis of PET waste that have been introduced as a starting material in the manufacture of polyurethanes, unsaturated polyesters and saturated polyester plasticizers is done. A possibility of new application of acrylate/methacrylate PET oligomers for UV curable coatings, useful for wood surfaces, paints and other applications is decribed.
57 citations
"Definición de metodología para la f..." refers background in this paper
...Con base en los resultados experimentales y las condiciones recomendadas [8][9][10][11], para el proceso de fundición de este material son: secado de...
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...2 °C reportada en las referencias [8][9]....
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TL;DR: In this paper, the mechanical and thermal properties of environment-friendly composites made from recycled newspaper fibers reinforced with recycled poly(ethylene terephthalate) (rPET) resin with the addition of styrene-ethylene-butylene-styrene grafted maleic anhydride (SEBS-g-MA) as compatibilizer were determined.
Abstract: This study presents the mechanical and thermal properties of environment-friendly composites made from recycled newspaper fibers reinforced recycled poly(ethylene terephthalate) (rPET) resin with the addition of styrene-ethylene-butylene-styrene grafted maleic anhydride (SEBS-g-MA) as compatibilizer. The effect of SEBS-g-MA addition (i.e., 10 phr) by using a twin-screw extruder to the rPET resin, followed by different fiber content (5, 10 and 15 wt.%) on the tensile, flexural and impact properties of the composites were determined. Stiffness of composites increased significantly compared to those of rPET/SEBS-g-MA blend. Fiber addition resulted in moderate increases in both tensile and flexural strength of the composites. Scanning electron microscope (SEM) photomicrographs of the impact fracture surfaces demonstrate good adhesion at 5 and 10 % fiber content. Differential scanning calorimetry (DSC) showed that the presence of newspaper fibers enhanced the nonisothermal crystallization kinetics and crystallinity. Thermal stability of the composites was improved as indicated by thermogravimetric analysis (TGA).
24 citations
01 Dec 2010
TL;DR: In this paper, the change of surface potential decay, surface resistivity, contact angle, and XPS of ultraviolet-treated PET films were investigated, and it was found that the changes affected by the surface degradation of PET film were caused by the generation of carboxyl groups through the chain decomposition and recombination with oxygen molecules in the air.
Abstract: This paper deals with the change of surface potential decay, surface resistivity, contact angle and XPS of ultraviolet-treated PET films. From the experimental results on the surface potential decay of UV degraded-samples, it was found that the accumulation of charge is decreased and the surface potential decay time is shortened. Also, from the result of XPS, it was found that the changes affected by the surface degradation of PET film were caused by the generation of carboxyl groups through the chain decomposition and recombination with oxygen molecules in the air.
21 citations
"Definición de metodología para la f..." refers background in this paper
...Cabe destacar que más del 50% de las aplicaciones del PET componen productos de un solo uso [4][5][6]....
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