| Titre : |
Preparation and characterization of CaCO3/high density polyethylene composites with various shapes and size of CaCO3 |
| Type de document : |
texte imprimé |
| Auteurs : |
X. Shi ; J. Wang ; X. Cai |
| Année de publication : |
2013 |
| Article en page(s) : |
p. 228-235 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Analyse thermique
Caractérisation
Carbonate de calciumLe carbonate de calcium (CaCO3) est composé d'un ion carbonate (CO32-) et d'un ion calcium (Ca2+), sa masse molaire est de 100,1 g/mole.
C'est le composant principal du calcaire et de la craie, mais également du marbre. C'est aussi le principal constituant des coquilles d'animaux marins, du corail et des escargots.
Chlorure de calcium
Cristallisation
Particules (matières)
Polyéthylène haute densité
Polymères -- Propriétés mécaniques
Rhéomètres
Solutions aqueuses (chimie)
Stabilité thermique
|
| Index. décimale : |
668.9 Polymères |
| Résumé : |
Calcium carbonate (CaCO3) with various shapes and size was prepared using CaCl2 and Na2CO3 aqueous solutions containing various additives. High density polyethylene (HDPE)/4 wt% CaCO3 composites were prepared using a Haake Rotational Rheometer. The effects of the CaCO3 particle shapes and size on the thermal and mechanical properties were investigated and characterized by differential scanning calorimetry (DSC) and universal testing machine. The results show the addition of CaCO3 to HDPE can increase the crystallization and decrease the melting temperature and crystallization temperature. The tensile yield strength of the composites was higher than that of HDPE. Sphere-like CaCO3 is the best form in improving the thermal stability and cubic CaCO3 can cause negative effect to the toughness. The impact strength of the composites is significantly increased with decreasing CaCO3 particle size. SEM examination of the fractured surfaces of the composites shows that CaCO3 reacted in cavitations and "lance" functions which increase the impact strength of the HDPE/CaCO3 composites. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Preparation and surface modification of CaCO3 particles - Preparation of HDPE/CaCO3 composites - Characterization
- RESULTS AND DISCUSSION : Shapes of CaCO3 - Thermal behavior of the HDPE and HDPE/CaCO3 composites - Crystalline morphologies of HDPE and HDPE/CaCO3 composites - Mechanical properties of HDPE and HDPE/CaCO3 composites - Morphology of fractured surfaces |
| DOI : |
10.3139/217.2695 |
| En ligne : |
https://drive.google.com/file/d/1iO--Vadhfxhq7w4gkG-ONN4_bAkdmxU5/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18436 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXVIII, N° 2 (05/2013) . - p. 228-235
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