Experimental investigation on mechanical and thermo-mechanical properties of alumina filled polypropylene composites using injection molding process / Deepak Kumar in INTERNATIONAL POLYMER PROCESSING, Vol. XXXII, N° 3 (07/2017)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. XXXII, N° 3 (07/2017) . - p. 316-325 Titre : Experimental investigation on mechanical and thermo-mechanical properties of alumina filled polypropylene composites using injection molding process Type de document : texte imprimé Auteurs : Deepak Kumar, Auteur ; G. S. Dangayach, Auteur ; P. N. Rao, Auteur Année de publication : 2017 Article en page(s) : p. 316-325 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alumine Charges (matériaux) Composites -- Moulage par injection Composites -- Propriétés mécaniques Composites -- Propriétés thermomécaniques Composites thermoplastiques Polypropylène Index. décimale : 668.4 Plastiques, vinyles Résumé : In the present study, Polypropylene composites were fabricated by varying different weight percentages (0 to 20%) of alumina powder by using Injection Molding Technique. Then the fabricated composites were characterized by physical characterization such as void content test, chemical characterization such as Fourier-transform infrared spectroscopy, mechanical characterization such as Shore hardness test, flexural test, compressive strength, Izod impact test, thermo-mechanical characterizations such as Dynamic Mechanical Analysis, Thermo-gravimetric analysis and morphological characterizations such as Scanning Electron Microscopy (SEM) and Atomic force Microscopy (AFM). The results indicate that the shore hardness values increase up to 25% with the increase in alumina filler up to 20%. The highest flexural strength and flexural modulus achieved are 59.26 MPa and 2126 MPa respectively with 20% filler loading. Further, it was also revealed that the storage modulus of the composites was found to be higher than that of the virgin PP because filler increases the stiffness of the composites. Thermo-gravimetric analysis (TGA) measurements indicate that both the initial degradation temperature and end degradation temperature increase with increasing filler content. SEM exhibits that alumina particles were uniformly and finely dispersed though some aggregates and agglomerates are identifiable. AFM results indicate that morphology of alumina in the PP matrix is characterized by a chainlike branched structure. Note de contenu : - EXPERIMENTAL : Selection of raw materials - Preparation of composite using plastics injection molding technique - Characterization of the samples - RESULTS AND DISCUSSION : FTIR spectra of alumina filled polypropylene composites - Effect of void content on alumina filled polyprpylene composites - Effect of shore hardness on alumina filled polypropylene composites - Effect of impact strength on alumina filled polypropylene composites - Effect of flexural properties on alumina filled polypropylene composites - Effect of compressive strength on alumina filled polypropylene composites - Dynamic mechanical analysis - Thermo-gravimetric analysis (TGA) - Scanning electron microscopy - Atomic force microscopy (AFM) DOI : 10.3139/217.3323 En ligne : https://drive.google.com/file/d/1Cp0fErLrNIF8T2Mh7x3QEcNsQ5bNKwmA/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28833 [article]

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