NDLI: Efecto De Las Variables Del Proceso De Inyección Sobre La Resistencia Al Impacto De Pp

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Efecto De Las Variables Del Proceso De Inyección Sobre La Resistencia Al Impacto De Pp

Content Provider	Semantic Scholar
Author	González, Daysi Costantino, Alejandra Pettarin, Valeria Frontini, Patricia Maria Candal, María Virginia
Copyright Year	2014
Abstract	En este trabajo se estudio la influencia de las variables del proceso de inyeccion, sobre la respuesta en impacto biaxial de piezas de Polipropileno homopolimero (PP H ). Con este fin, se fabricaron probetas con geometria de disco variando sistematicamente las temperaturas de molde (T m ) y de inyeccion (T i ). Como resultado, se encontro que en las ventanas de procesamiento empleadas, a menores T m y a mayores T i las probetas muestran una mayor energia de perforacion, y el tipo de fractura tiende a ser ductil. Sin embargo, se observo que el PP H estudiado se encuentra en la zona de transicion ductil – fragil, por lo tanto, existe una dispersion asociada al porcentaje de ductilidad (energia absorbida) de una pieza dada. The present work studies the influence of injection molding process conditions over the impact response of Polypropylene Homopolymer (PP H ) parts. For this, disc shaped samples were injection-molded for a wide range of mold (T m ) and injection (T i ) temperatures values. Impact response was assessed through the falling weight force-displacement curves. As a result, it was found that by decreasing T m and increasing T i , test samples show higher impact energies and ductile failure modes. However, it was observed that the studied PP H is under the ductile-fragile transition regime and therefore there is an associated statistical dispersion in the absorbed impact energy values obtained for a given set of processing parameters,
Starting Page	17
Ending Page	18
Page Count	2
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://ri.conicet.gov.ar/bitstream/handle/11336/5018/CONICET_Digital_Nro.6724_D.pdf?isAllowed=y&sequence=5
Alternate Webpage(s)	http://www.rlmm.org/ojs/index.php/rlmm/article/download/586/368
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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