Influence of Annealing on Microstructure and Mechanical Properties of Isotactic Polypropylene with beta-Phase Nucleating Agent
Data(s) |
2009
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Resumo |
The microstructure and mechanical properties of beta-nucleated iPP before and after being annealed at different temperatures (90-160 degrees C) have been analyzed, Annealing induced different degrees of variation in fracture toughness of beta-nucleated iPP samples. namely, slight enhancement at relatively low annealing temperatures (< 110 degrees C) and great improvement at moderate temperatures (120-130 degrees C), whereas dramatic deterioration at relatively high temperatures ( > 140 degrees C) has been observed. The variation of fracture toughness of beta-nucleated iPP is observed to be dependent on the content of beta-NA. Experiments, including scanning electronic microscope (SEM), wide-angle X-ray diffraction (WAXD), differential scanning calorimetry (DSC), small-angle X-ray scattering (SAXS), and dynamic mechanical analysis (DMA), are performed to study the variations of microstructures as well as the toughening mechanism of the beta-nucleated iPP after being annealed. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Bai HW;Wang Y;Zhang ZJ;Han L;Li YL;Liu L;Zhou ZW;Men YF.Influence of Annealing on Microstructure and Mechanical Properties of Isotactic Polypropylene with beta-Phase Nucleating Agent,MACROMOLECULES ,2009,42(17):6647-6655 |
Palavras-Chave | #HIGH-DENSITY POLYETHYLENE #X-RAY-DIFFRACTION #HIGH-TEMPERATURE #CRYSTALLIZATION BEHAVIORS #SUPERMOLECULAR STRUCTURE #TOUGHENING MECHANISMS #FRACTURE-BEHAVIOR #CRYSTAL-STRUCTURE #TENSILE BEHAVIOR #IMPACT STRENGTH |
Tipo |
期刊论文 |