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EPDM-G-GMA toughening of straw/polypropylene composites : mechanical properties, thermal stability and rheological properties / Y. He in INTERNATIONAL POLYMER PROCESSING, Vol. XXXV, N° 1 (03/2020)
[article]
Titre : EPDM-G-GMA toughening of straw/polypropylene composites : mechanical properties, thermal stability and rheological properties Type de document : texte imprimé Auteurs : Y. He, Auteur ; H.-M. Wu, Auteur ; J.-B. Guo, Auteur ; W.-D. He, Auteur ; Y. Zhou, Auteur Année de publication : 2020 Article en page(s) : p. 50-57 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse mécanique dynamique
Analyse thermique
Caractérisation
Composites à fibres végétales -- Propriétés mécaniques
Composites à fibres végétales -- Propriétés thermiques
Ethylène-propylène-diène monomère
Paille
Polypropylène
Rhéologie
Stabilité thermiqueIndex. décimale : 668.4 Plastiques, vinyles Résumé : Natural fiber reinforced polymer composites have the advantages of low density, low cost and renewability. However, the inferior mechanical property restricts the application. In this work, EPDM-g-GMA has been added to straw/PP composites to improve the properties. The mechanical properties, thermal stability, crystallinity and melt viscosity have been invested. The results reveal that the mechanical properties of straw/PP/EPDM composites are improved remarkably and the impact strength more than doubles compared to straw/PP composites. Surface microstructure analysis reveals that the composite has good interfacial compatibility and dispersing performance. The maximum decomposition temperature, the melting enthalpy and crystallinity increased. The glass transition temperature and process ability are also improved by the addition of EPDM. Note de contenu : - EXPERIMENTAL : Materials and equipment - Composite preparation - Characterization
- RESULTS AND DISCUSSION : Mechanical properties - Morphology - Thermal stability - DSC analysis - DMA analysis - Rheological propertiesDOI : https://doi.org/10.3139/217.3836 En ligne : https://drive.google.com/file/d/1EMazIVfzrlz6IUYkZoQSVSzJL9eijUmu/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33778
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXV, N° 1 (03/2020) . - p. 50-57[article]Réservation
Réserver ce documentInfluence of rubber ratio and crosslinking agent on mechanical properties, crystallization and rheological behaviors of EPDM/PP thermoplastic elastomer / D.-H. Xu in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIV, N° 4 (08/2019)
[article]
Titre : Influence of rubber ratio and crosslinking agent on mechanical properties, crystallization and rheological behaviors of EPDM/PP thermoplastic elastomer Type de document : texte imprimé Auteurs : D.-H. Xu, Auteur ; Y. Zhou, Auteur ; W.-D. He, Auteur ; H.-M. Wu, Auteur ; J. Yu, Auteur Année de publication : 2019 Article en page(s) : p. 457-466 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse mécanique dynamique
Analyse thermique
Caoutchouc -- Propriétés mécaniques
Cristallisation
Elastomères thermoplastiques -- Propriétés mécaniques
Ethylène-propylène-diène monomère
Morphologie (matériaux)
Polypropylène
Réticulants
Rhéologie
VulcanisationIndex. décimale : 668.4 Plastiques, vinyles Résumé : The ethylene-propylene-diene monomer/polypropylene (EPDM/PP) thermoplastic elastomer is prepared by dynamic vulcanization. The effects of different rubber ratios and crosslinking agent contents on the static and dynamic mechanical properties, crystallization and rheological behaviors are investigated and discussed. EPDM/PP with the rubber ratio from 40 to 50 % and crosslinking agent content of 1.2 wt% has the highest tensile strength and elongation at break. The fracture morphologies indicate that EPDM/PP with high rubber ratios and crosslinker contents is over vulcanized to harden, which results in that some large particles cannot be fragmented by shear force. The crystallinity obtained from differential scanning calorimetry (DSC) shows a decrease with increasing rubber ratio and a very slight variation with increasing the crosslinking content. The dynamic mechanical analysis (DMA) results display a decrease trend in storage modulus and tan δ with increasing crosslinking density. The rheological behaviors show that the complex viscosity also increases with increasing crosslinking density, indicating that the elastic deformation becomes superior to viscous flow in EPDM/PP. Note de contenu : - EXPERIMENTAL : Materials - Preparation of samples - Measurements and characterization
- RESULTS AND DISCUSSION : Mechanical properties - Morphology analysis - Crystallization behavior - Dynamic mechanical properties - Rheology behaviorDOI : 10.3139/217.3817 En ligne : https://www.degruyter.com/document/doi/10.3139/217.3817/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33064
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXIV, N° 4 (08/2019) . - p. 457-466[article]Réservation
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